add softwareKernels config option

2022-08-30 10:28:33 -04:00 · 2022-08-30 10:28:33 -04:00 · 22755355f7
parent 79775267bc
commit 22755355f7
47 changed files with 64863 additions and 6741 deletions
--- a/TODO.md
+++ b/TODO.md
@ -23,8 +23,11 @@ N/A

 ### Face with Attention

-`FaceMesh-Attention` is not supported in `Node` or in browser using `WASM` backend due to missing kernel op in **TFJS**  
-Model is supported using `WebGL` backend in browser
+`FaceMesh-Attention` is not supported in browser using `WASM` backend due to missing kernel op in **TFJS**  
+
+### Object Detection
+
+`NanoDet` model is not supported in in browser using `WASM` backend due to missing kernel op in **TFJS**  

 ### WebGPU

@ -36,21 +39,12 @@ Enable via <chrome://flags/#enable-unsafe-webgpu>
 Running in **web workers** requires `OffscreenCanvas` which is still disabled by default in **Firefox**  
 Enable via `about:config` -> `gfx.offscreencanvas.enabled`

-### Face Detection & Hand Detection
-
-Enhanced rotation correction for face detection and hand detection is not working in **NodeJS** due to missing kernel op in **TFJS**  
-Feature is automatically disabled in **NodeJS** without user impact  
-
-### Object Detection
-
-`NanoDet` model is not supported in `Node` or in browser using `WASM` backend due to missing kernel op in **TFJS**
-Model is supported using `WebGL` backend in browser
-
 <hr><br>

 ## Pending Release Changes

- Update TFJS to **3.20.0**
+- Update **TFJS** to **3.20.0**
+- Update **TypeScript** to **4.8**
 - Add **InsightFace** model as alternative for face embedding/descriptor detection  
  Compatible with multiple variations of **InsightFace** models  
  Configurable using `config.face.insightface` config section  
@ -58,9 +52,14 @@ Model is supported using `WebGL` backend in browser
  Models can be downloaded from <https://github.com/vladmandic/insightface>  
 - Add `human.check()` which validates all kernel ops for currently loaded models with currently selected backend  
  Example: `console.error(human.check());`  
+- Add `config.softwareKernels` config option which uses **CPU** implementation for missing ops  
+  Disabled by default  
+  If enabled, it is used by face and hand rotation correction (`config.face.rotation` and `config.hand.rotation`)  
 - Add underlying **tensorflow** library version detection when running in NodeJS to  
  `human.env` and check if **GPU** is used for acceleration  
  Example: `console.log(human.env.tensorflow)`  
+- Treat models that cannot be found & loaded as non-critical error  
+  Instead of creating runtime exception, `human` will now report that model could not be loaded  
 - Host models in <human-models>  
  Models can be directly used without downloading to local storage  
  Example: `modelPath: 'https://vladmandic.github.io/human-models/models/facemesh.json'`  
--- a/demo/faceid/index.js
+++ b/demo/faceid/index.js
--- a/demo/faceid/index.js.map
+++ b/demo/faceid/index.js.map
--- a/demo/typescript/index.js
+++ b/demo/typescript/index.js
@ -4,6 +4,109 @@
  author: <https://github.com/vladmandic>'
 */

-import*as c from"../../dist/human.esm.js";var w={async:!1,modelBasePath:"../../models",filter:{enabled:!0,equalization:!1,flip:!1},face:{enabled:!0,detector:{rotation:!1},mesh:{enabled:!0},attention:{enabled:!1},iris:{enabled:!0},description:{enabled:!0},emotion:{enabled:!0}},body:{enabled:!0},hand:{enabled:!0},object:{enabled:!1},gesture:{enabled:!0}},e=new c.Human(w);e.env.perfadd=!1;e.draw.options.font='small-caps 18px "Lato"';e.draw.options.lineHeight=20;var t={video:document.getElementById("video"),canvas:document.getElementById("canvas"),log:document.getElementById("log"),fps:document.getElementById("status"),perf:document.getElementById("performance")},n={detect:0,draw:0,tensors:0,start:0},o={detectFPS:0,drawFPS:0,frames:0,averageMs:0},i=(...a)=>{t.log.innerText+=a.join(" ")+`
-`,console.log(...a)},r=a=>t.fps.innerText=a,b=a=>t.perf.innerText="tensors:"+e.tf.memory().numTensors.toString()+" | performance: "+JSON.stringify(a).replace(/"|{|}/g,"").replace(/,/g," | ");async function h(){r("starting webcam...");let a={audio:!1,video:{facingMode:"user",resizeMode:"none",width:{ideal:document.body.clientWidth},height:{ideal:document.body.clientHeight}}},d=await navigator.mediaDevices.getUserMedia(a),f=new Promise(p=>{t.video.onloadeddata=()=>p(!0)});t.video.srcObject=d,t.video.play(),await f,t.canvas.width=t.video.videoWidth,t.canvas.height=t.video.videoHeight;let s=d.getVideoTracks()[0],v=s.getCapabilities?s.getCapabilities():"",g=s.getSettings?s.getSettings():"",u=s.getConstraints?s.getConstraints():"";i("video:",t.video.videoWidth,t.video.videoHeight,s.label,{stream:d,track:s,settings:g,constraints:u,capabilities:v}),t.canvas.onclick=()=>{t.video.paused?t.video.play():t.video.pause()}}async function l(){if(!t.video.paused){n.start===0&&(n.start=e.now()),await e.detect(t.video);let a=e.tf.memory().numTensors;a-n.tensors!==0&&i("allocated tensors:",a-n.tensors),n.tensors=a,o.detectFPS=Math.round(1e3*1e3/(e.now()-n.detect))/1e3,o.frames++,o.averageMs=Math.round(1e3*(e.now()-n.start)/o.frames)/1e3,o.frames%100===0&&!t.video.paused&&i("performance",{...o,tensors:n.tensors})}n.detect=e.now(),requestAnimationFrame(l)}async function m(){if(!t.video.paused){let d=e.next(e.result);e.config.filter.flip?e.draw.canvas(d.canvas,t.canvas):e.draw.canvas(t.video,t.canvas),await e.draw.all(t.canvas,d),b(d.performance)}let a=e.now();o.drawFPS=Math.round(1e3*1e3/(a-n.draw))/1e3,n.draw=a,r(t.video.paused?"paused":`fps: ${o.detectFPS.toFixed(1).padStart(5," ")} detect | ${o.drawFPS.toFixed(1).padStart(5," ")} draw`),setTimeout(m,30)}async function M(){i("human version:",e.version,"| tfjs version:",e.tf.version["tfjs-core"]),i("platform:",e.env.platform,"| agent:",e.env.agent),r("loading..."),await e.load(),i("backend:",e.tf.getBackend(),"| available:",e.env.backends),i("models stats:",e.getModelStats()),i("models loaded:",Object.values(e.models).filter(a=>a!==null).length),r("initializing..."),await e.warmup(),await h(),await l(),await m()}window.onload=M;
+
+// demo/typescript/index.ts
+import * as H from "../../dist/human.esm.js";
+var humanConfig = {
+  async: false,
+  modelBasePath: "../../models",
+  filter: { enabled: true, equalization: false, flip: false },
+  face: { enabled: true, detector: { rotation: false }, mesh: { enabled: true }, attention: { enabled: false }, iris: { enabled: true }, description: { enabled: true }, emotion: { enabled: true } },
+  body: { enabled: true },
+  hand: { enabled: true },
+  object: { enabled: false },
+  gesture: { enabled: true }
+};
+var human = new H.Human(humanConfig);
+human.env.perfadd = false;
+human.draw.options.font = 'small-caps 18px "Lato"';
+human.draw.options.lineHeight = 20;
+var dom = {
+  video: document.getElementById("video"),
+  canvas: document.getElementById("canvas"),
+  log: document.getElementById("log"),
+  fps: document.getElementById("status"),
+  perf: document.getElementById("performance")
+};
+var timestamp = { detect: 0, draw: 0, tensors: 0, start: 0 };
+var fps = { detectFPS: 0, drawFPS: 0, frames: 0, averageMs: 0 };
+var log = (...msg) => {
+  dom.log.innerText += msg.join(" ") + "\n";
+  console.log(...msg);
+};
+var status = (msg) => dom.fps.innerText = msg;
+var perf = (msg) => dom.perf.innerText = "tensors:" + human.tf.memory().numTensors.toString() + " | performance: " + JSON.stringify(msg).replace(/"|{|}/g, "").replace(/,/g, " | ");
+async function webCam() {
+  status("starting webcam...");
+  const options = { audio: false, video: { facingMode: "user", resizeMode: "none", width: { ideal: document.body.clientWidth }, height: { ideal: document.body.clientHeight } } };
+  const stream = await navigator.mediaDevices.getUserMedia(options);
+  const ready = new Promise((resolve) => {
+    dom.video.onloadeddata = () => resolve(true);
+  });
+  dom.video.srcObject = stream;
+  void dom.video.play();
+  await ready;
+  dom.canvas.width = dom.video.videoWidth;
+  dom.canvas.height = dom.video.videoHeight;
+  const track = stream.getVideoTracks()[0];
+  const capabilities = track.getCapabilities ? track.getCapabilities() : "";
+  const settings = track.getSettings ? track.getSettings() : "";
+  const constraints = track.getConstraints ? track.getConstraints() : "";
+  log("video:", dom.video.videoWidth, dom.video.videoHeight, track.label, { stream, track, settings, constraints, capabilities });
+  dom.canvas.onclick = () => {
+    if (dom.video.paused)
+      void dom.video.play();
+    else
+      dom.video.pause();
+  };
+}
+async function detectionLoop() {
+  if (!dom.video.paused) {
+    if (timestamp.start === 0)
+      timestamp.start = human.now();
+    await human.detect(dom.video);
+    const tensors = human.tf.memory().numTensors;
+    if (tensors - timestamp.tensors !== 0)
+      log("allocated tensors:", tensors - timestamp.tensors);
+    timestamp.tensors = tensors;
+    fps.detectFPS = Math.round(1e3 * 1e3 / (human.now() - timestamp.detect)) / 1e3;
+    fps.frames++;
+    fps.averageMs = Math.round(1e3 * (human.now() - timestamp.start) / fps.frames) / 1e3;
+    if (fps.frames % 100 === 0 && !dom.video.paused)
+      log("performance", { ...fps, tensors: timestamp.tensors });
+  }
+  timestamp.detect = human.now();
+  requestAnimationFrame(detectionLoop);
+}
+async function drawLoop() {
+  if (!dom.video.paused) {
+    const interpolated = human.next(human.result);
+    if (human.config.filter.flip)
+      human.draw.canvas(interpolated.canvas, dom.canvas);
+    else
+      human.draw.canvas(dom.video, dom.canvas);
+    await human.draw.all(dom.canvas, interpolated);
+    perf(interpolated.performance);
+  }
+  const now = human.now();
+  fps.drawFPS = Math.round(1e3 * 1e3 / (now - timestamp.draw)) / 1e3;
+  timestamp.draw = now;
+  status(dom.video.paused ? "paused" : `fps: ${fps.detectFPS.toFixed(1).padStart(5, " ")} detect | ${fps.drawFPS.toFixed(1).padStart(5, " ")} draw`);
+  setTimeout(drawLoop, 30);
+}
+async function main() {
+  log("human version:", human.version, "| tfjs version:", human.tf.version["tfjs-core"]);
+  log("platform:", human.env.platform, "| agent:", human.env.agent);
+  status("loading...");
+  await human.load();
+  log("backend:", human.tf.getBackend(), "| available:", human.env.backends);
+  log("models stats:", human.getModelStats());
+  log("models loaded:", Object.values(human.models).filter((model) => model !== null).length);
+  status("initializing...");
+  await human.warmup();
+  await webCam();
+  await detectionLoop();
+  await drawLoop();
+}
+window.onload = main;
 //# sourceMappingURL=index.js.map
--- a/demo/typescript/index.js.map
+++ b/demo/typescript/index.js.map
--- a/dist/human.esm-nobundle.js
+++ b/dist/human.esm-nobundle.js
--- a/dist/human.esm-nobundle.js.map
+++ b/dist/human.esm-nobundle.js.map
--- a/dist/human.esm.js
+++ b/dist/human.esm.js
--- a/dist/human.esm.js.map
+++ b/dist/human.esm.js.map
--- a/dist/human.js
+++ b/dist/human.js
--- a/dist/human.node-gpu.js
+++ b/dist/human.node-gpu.js
--- a/dist/human.node-wasm.js
+++ b/dist/human.node-wasm.js
--- a/dist/human.node.js
+++ b/dist/human.node.js
--- a/dist/tfjs.esm.js
+++ b/dist/tfjs.esm.js
--- a/dist/tfjs.version.js
+++ b/dist/tfjs.version.js
@ -4,4 +4,38 @@
  author: <https://github.com/vladmandic>'
 */

-var e="3.20.0";var s="3.20.0";var t="3.20.0";var i="3.20.0";var n="3.20.0";var r="3.20.0";var l="3.20.0";var V={tfjs:e,"tfjs-core":s,"tfjs-data":t,"tfjs-layers":i,"tfjs-converter":n,"tfjs-backend-webgl":r,"tfjs-backend-wasm":l};export{V as version};
+
+// node_modules/.pnpm/@tensorflow+tfjs@3.20.0_seedrandom@3.0.5/node_modules/@tensorflow/tfjs/package.json
+var version = "3.20.0";
+
+// node_modules/.pnpm/@tensorflow+tfjs-core@3.20.0/node_modules/@tensorflow/tfjs-core/package.json
+var version2 = "3.20.0";
+
+// node_modules/.pnpm/@tensorflow+tfjs-data@3.20.0_k7dauiu3y265wd6lcplf62oi7i/node_modules/@tensorflow/tfjs-data/package.json
+var version3 = "3.20.0";
+
+// node_modules/.pnpm/@tensorflow+tfjs-layers@3.20.0_au2niqrxqvhsnv4oetlud656gy/node_modules/@tensorflow/tfjs-layers/package.json
+var version4 = "3.20.0";
+
+// node_modules/.pnpm/@tensorflow+tfjs-converter@3.20.0_au2niqrxqvhsnv4oetlud656gy/node_modules/@tensorflow/tfjs-converter/package.json
+var version5 = "3.20.0";
+
+// node_modules/.pnpm/@tensorflow+tfjs-backend-webgl@3.20.0_au2niqrxqvhsnv4oetlud656gy/node_modules/@tensorflow/tfjs-backend-webgl/package.json
+var version6 = "3.20.0";
+
+// node_modules/.pnpm/@tensorflow+tfjs-backend-wasm@3.20.0_au2niqrxqvhsnv4oetlud656gy/node_modules/@tensorflow/tfjs-backend-wasm/package.json
+var version7 = "3.20.0";
+
+// tfjs/tf-version.ts
+var version8 = {
+  tfjs: version,
+  "tfjs-core": version2,
+  "tfjs-data": version3,
+  "tfjs-layers": version4,
+  "tfjs-converter": version5,
+  "tfjs-backend-webgl": version6,
+  "tfjs-backend-wasm": version7
+};
+export {
+  version8 as version
+};
--- a/package.json
+++ b/package.json
@ -76,16 +76,16 @@
    "@tensorflow/tfjs-node": "^3.20.0",
    "@tensorflow/tfjs-node-gpu": "^3.20.0",
    "@tensorflow/tfjs-tflite": "0.0.1-alpha.8",
-    "@types/node": "^18.7.13",
+    "@types/node": "^18.7.14",
    "@types/offscreencanvas": "^2019.7.0",
-    "@typescript-eslint/eslint-plugin": "^5.35.1",
-    "@typescript-eslint/parser": "^5.35.1",
+    "@typescript-eslint/eslint-plugin": "^5.36.0",
+    "@typescript-eslint/parser": "^5.36.0",
    "@vladmandic/build": "^0.7.11",
    "@vladmandic/pilogger": "^0.4.6",
    "@vladmandic/tfjs": "github:vladmandic/tfjs",
    "@webgpu/types": "^0.1.21",
    "canvas": "^2.9.3",
-    "esbuild": "^0.15.5",
+    "esbuild": "^0.15.6",
    "eslint": "8.23.0",
    "eslint-config-airbnb-base": "^15.0.0",
    "eslint-plugin-html": "^7.1.0",
--- a/src/body/blazepose.ts
+++ b/src/body/blazepose.ts
@ -34,7 +34,7 @@ export async function loadDetect(config: Config): Promise<GraphModel> {
  if (env.initial) models.detector = null;
  if (!models.detector && config.body['detector'] && config.body['detector'].modelPath || '') {
    models.detector = await loadModel(config.body['detector'].modelPath);
-    const inputs = Object.values(models.detector.modelSignature['inputs']);
+    const inputs = models.detector?.['executor'] ? Object.values(models.detector.modelSignature['inputs']) : undefined;
    inputSize.detector[0] = Array.isArray(inputs) ? parseInt(inputs[0].tensorShape.dim[1].size) : 0;
    inputSize.detector[1] = Array.isArray(inputs) ? parseInt(inputs[0].tensorShape.dim[2].size) : 0;
  } else if (config.debug && models.detector) log('cached model:', models.detector['modelUrl']);
@ -46,7 +46,7 @@ export async function loadPose(config: Config): Promise<GraphModel> {
  if (env.initial) models.landmarks = null;
  if (!models.landmarks) {
    models.landmarks = await loadModel(config.body.modelPath);
-    const inputs = Object.values(models.landmarks.modelSignature['inputs']);
+    const inputs = models.landmarks?.['executor'] ? Object.values(models.landmarks.modelSignature['inputs']) : undefined;
    inputSize.landmarks[0] = Array.isArray(inputs) ? parseInt(inputs[0].tensorShape.dim[1].size) : 0;
    inputSize.landmarks[1] = Array.isArray(inputs) ? parseInt(inputs[0].tensorShape.dim[2].size) : 0;
  } else if (config.debug) log('cached model:', models.landmarks['modelUrl']);
@ -140,6 +140,7 @@ async function detectLandmarks(input: Tensor, config: Config, outputSize: [numbe
   * t.world: 39 keypoints [x,y,z] normalized to -1..1
   * t.poseflag: body score
  */
+  if (!models.landmarks?.['executor']) return null;
  const t: Record<string, Tensor> = {};
  [t.ld/* 1,195(39*5) */, t.segmentation/* 1,256,256,1 */, t.heatmap/* 1,64,64,39 */, t.world/* 1,117(39*3) */, t.poseflag/* 1,1 */] = models.landmarks?.execute(input, outputNodes.landmarks) as Tensor[]; // run model
  const poseScore = (await t.poseflag.data())[0];
--- a/src/body/efficientpose.ts
+++ b/src/body/efficientpose.ts
@ -51,6 +51,7 @@ async function max2d(inputs, minScore): Promise<[number, number, number]> {
 }

 export async function predict(image: Tensor, config: Config): Promise<BodyResult[]> {
+  if (!model?.['executor']) return [];
  const skipTime = (config.body.skipTime || 0) > (now() - lastTime);
  const skipFrame = skipped < (config.body.skipFrames || 0);
  if (config.skipAllowed && skipTime && skipFrame && Object.keys(cache.keypoints).length > 0) {
--- a/src/body/movenet.ts
+++ b/src/body/movenet.ts
@ -37,7 +37,7 @@ export async function load(config: Config): Promise<GraphModel> {
    fakeOps(['size'], config);
    model = await loadModel(config.body.modelPath);
  } else if (config.debug) log('cached model:', model['modelUrl']);
-  inputSize = model.inputs[0].shape ? model.inputs[0].shape[2] : 0;
+  inputSize = (model?.['executor'] && model?.inputs?.[0].shape) ? model.inputs[0].shape[2] : 0;
  if (inputSize < 64) inputSize = 256;
  return model;
 }
@ -124,7 +124,7 @@ function parseMultiPose(res, config, image) {
 }

 export async function predict(input: Tensor, config: Config): Promise<BodyResult[]> {
-  if (!model?.inputs?.[0].shape) return []; // something is wrong with the model
+  if (!model?.['executor'] || !model?.inputs?.[0].shape) return []; // something is wrong with the model
  if (!config.skipAllowed) cache.boxes.length = 0; // allowed to use cache or not
  skipped++; // increment skip frames
  const skipTime = (config.body.skipTime || 0) > (now() - cache.last);
--- a/src/body/posenet.ts
+++ b/src/body/posenet.ts
@ -159,6 +159,7 @@ export async function predict(input: Tensor, config: Config): Promise<BodyResult
  /** posenet is mostly obsolete
   * caching is not implemented
   */
+  if (!model?.['executor']) return [];
  const res = tf.tidy(() => {
    if (!model.inputs[0].shape) return [];
    const resized = tf.image.resizeBilinear(input, [model.inputs[0].shape[2], model.inputs[0].shape[1]]);
--- a/src/config.ts
+++ b/src/config.ts
@ -286,6 +286,11 @@ export interface Config {
  */
  cacheSensitivity: number;

+  /** Software Kernels
+   * Registers software kernel ops running on CPU when accelerated version of kernel is not found in the current backend
+  */
+  softwareKernels: boolean,
+
  /** Perform immediate garbage collection on deallocated tensors instead of caching them */
  deallocate: boolean;

@ -328,6 +333,7 @@ const config: Config = {
  cacheSensitivity: 0.70,
  skipAllowed: false,
  deallocate: false,
+  softwareKernels: false,
  filter: {
    enabled: true,
    equalization: false,
--- a/src/face/antispoof.ts
+++ b/src/face/antispoof.ts
@ -23,7 +23,7 @@ export async function load(config: Config): Promise<GraphModel> {
 }

 export async function predict(image: Tensor, config: Config, idx: number, count: number): Promise<number> {
-  if (!model) return 0;
+  if (!model || !model?.['executor']) return 0;
  const skipTime = (config.face.antispoof?.skipTime || 0) > (now() - lastTime);
  const skipFrame = skipped < (config.face.antispoof?.skipFrames || 0);
  if (config.skipAllowed && skipTime && skipFrame && (lastCount === count) && cached[idx]) {
--- a/src/face/blazeface.ts
+++ b/src/face/blazeface.ts
@ -28,7 +28,7 @@ export async function load(config: Config): Promise<GraphModel> {
  if (env.initial) model = null;
  if (!model) model = await loadModel(config.face.detector?.modelPath);
  else if (config.debug) log('cached model:', model['modelUrl']);
-  inputSize = model.inputs[0].shape ? model.inputs[0].shape[2] : 0;
+  inputSize = (model['executor'] && model.inputs[0].shape) ? model.inputs[0].shape[2] : 256;
  inputSizeT = tf.scalar(inputSize, 'int32') as Tensor;
  anchors = tf.tensor2d(util.generateAnchors(inputSize)) as Tensor;
  return model;
--- a/src/face/facemesh.ts
+++ b/src/face/facemesh.ts
@ -33,6 +33,7 @@ let model: GraphModel | null = null;
 let inputSize = 0;

 export async function predict(input: Tensor, config: Config): Promise<FaceResult[]> {
+  if (!model?.['executor']) return [];
  // reset cached boxes
  const skipTime = (config.face.detector?.skipTime || 0) > (now() - cache.timestamp);
  const skipFrame = cache.skipped < (config.face.detector?.skipFrames || 0);
@ -120,7 +121,7 @@ export async function predict(input: Tensor, config: Config): Promise<FaceResult
        if (config.face.attention?.enabled) {
          rawCoords = await attention.augment(rawCoords, results); // augment iris results using attention model results
        } else if (config.face.iris?.enabled) {
-          rawCoords = await iris.augmentIris(rawCoords, face.tensor, config, inputSize); // run iris model and augment results
+          rawCoords = await iris.augmentIris(rawCoords, face.tensor, inputSize); // run iris model and augment results
        }
        face.mesh = util.transformRawCoords(rawCoords, box, angle, rotationMatrix, inputSize); // get processed mesh
        face.meshRaw = face.mesh.map((pt) => [pt[0] / (input.shape[2] || 0), pt[1] / (input.shape[1] || 0), (pt[2] || 0) / size]);
@ -158,7 +159,7 @@ export async function load(config: Config): Promise<GraphModel> {
  } else if (config.debug) {
    log('cached model:', model['modelUrl']);
  }
-  inputSize = model.inputs[0].shape ? model.inputs[0].shape[2] : 0;
+  inputSize = (model['executor'] && model?.inputs?.[0].shape) ? model?.inputs?.[0].shape[2] : 256;
  return model;
 }

--- a/src/face/facemeshutil.ts
+++ b/src/face/facemeshutil.ts
@ -169,7 +169,7 @@ export function correctFaceRotation(rotate, box, input, inputSize) {
  let rotationMatrix = fixedRotationMatrix; // default
  let face; // default

-  if (rotate && env.kernels.includes('rotatewithoffset')) { // rotateWithOffset is not defined for tfjs-node
+  if (rotate && env.kernels.includes('rotatewithoffset')) {
    angle = computeRotation(box.landmarks[symmetryLine[0]], box.landmarks[symmetryLine[1]]);
    const largeAngle = angle && (angle !== 0) && (Math.abs(angle) > 0.2);
    if (largeAngle) { // perform rotation only if angle is sufficiently high
--- a/src/face/faceres.ts
+++ b/src/face/faceres.ts
@ -64,7 +64,7 @@ export function enhance(input): Tensor {
 }

 export async function predict(image: Tensor, config: Config, idx: number, count: number): Promise<FaceRes> {
-  if (!model) return { age: 0, gender: 'unknown', genderScore: 0, descriptor: [] };
+  if (!model?.['executor']) return { age: 0, gender: 'unknown', genderScore: 0, descriptor: [] };
  const skipFrame = skipped < (config.face.description?.skipFrames || 0);
  const skipTime = (config.face.description?.skipTime || 0) > (now() - lastTime);
  if (config.skipAllowed && skipFrame && skipTime && (lastCount === count) && last[idx]?.age && (last[idx]?.age > 0)) {
--- a/src/face/insightface.ts
+++ b/src/face/insightface.ts
@ -27,7 +27,7 @@ export async function load(config: Config): Promise<GraphModel> {
 }

 export async function predict(input: Tensor, config: Config, idx, count): Promise<number[]> {
-  if (!model) return [];
+  if (!model?.['executor']) return [];
  const skipFrame = skipped < (config.face['insightface']?.skipFrames || 0);
  const skipTime = (config.face['insightface']?.skipTime || 0) > (now() - lastTime);
  if (config.skipAllowed && skipTime && skipFrame && (lastCount === count) && last[idx]) {
--- a/src/face/iris.ts
+++ b/src/face/iris.ts
@ -32,7 +32,7 @@ export async function load(config: Config): Promise<GraphModel> {
  if (env.initial) model = null;
  if (!model) model = await loadModel(config.face.iris?.modelPath);
  else if (config.debug) log('cached model:', model['modelUrl']);
-  inputSize = model.inputs[0].shape ? model.inputs[0].shape[2] : 0;
+  inputSize = (model?.['executor'] && model.inputs?.[0].shape) ? model.inputs[0].shape[2] : 0;
  if (inputSize === -1) inputSize = 64;
  return model;
 }
@ -110,11 +110,8 @@ export const getAdjustedIrisCoords = (rawCoords, irisCoords, direction) => {
  });
 };

-export async function augmentIris(rawCoords, face, config, meshSize) {
-  if (!model) {
-    if (config.debug) log('face mesh iris detection requested, but model is not loaded');
-    return rawCoords;
-  }
+export async function augmentIris(rawCoords, face, meshSize) {
+  if (!model?.['executor']) return rawCoords;
  const { box: leftEyeBox, boxSize: leftEyeBoxSize, crop: leftEyeCrop } = getEyeBox(rawCoords, face, eyeLandmarks.leftBounds[0], eyeLandmarks.leftBounds[1], meshSize, true);
  const { box: rightEyeBox, boxSize: rightEyeBoxSize, crop: rightEyeCrop } = getEyeBox(rawCoords, face, eyeLandmarks.rightBounds[0], eyeLandmarks.rightBounds[1], meshSize, true);
  const combined = tf.concat([leftEyeCrop, rightEyeCrop]);
--- a/src/face/liveness.ts
+++ b/src/face/liveness.ts
@ -23,7 +23,7 @@ export async function load(config: Config): Promise<GraphModel> {
 }

 export async function predict(image: Tensor, config: Config, idx: number, count: number): Promise<number> {
-  if (!model) return 0;
+  if (!model?.['executor']) return 0;
  const skipTime = (config.face.liveness?.skipTime || 0) > (now() - lastTime);
  const skipFrame = skipped < (config.face.liveness?.skipFrames || 0);
  if (config.skipAllowed && skipTime && skipFrame && (lastCount === count) && cached[idx]) {
--- a/src/face/mobilefacenet.ts
+++ b/src/face/mobilefacenet.ts
@ -45,7 +45,7 @@ const contrast = merge.sub(mean).mul(factor).add(mean);
 */

 export async function predict(input: Tensor, config: Config, idx, count): Promise<number[]> {
-  if (!model) return [];
+  if (!model?.['executor']) return [];
  const skipFrame = skipped < (config.face['mobilefacenet']?.skipFrames || 0);
  const skipTime = (config.face['mobilefacenet']?.skipTime || 0) > (now() - lastTime);
  if (config.skipAllowed && skipTime && skipFrame && (lastCount === count) && last[idx]) {
--- a/src/hand/handtrack.ts
+++ b/src/hand/handtrack.ts
@ -76,7 +76,7 @@ export async function loadDetect(config: Config): Promise<GraphModel> {
    // ideally need to prune the model itself
    fakeOps(['tensorlistreserve', 'enter', 'tensorlistfromtensor', 'merge', 'loopcond', 'switch', 'exit', 'tensorliststack', 'nextiteration', 'tensorlistsetitem', 'tensorlistgetitem', 'reciprocal', 'shape', 'split', 'where'], config);
    models[0] = await loadModel(config.hand.detector?.modelPath);
-    const inputs = Object.values(models[0].modelSignature['inputs']);
+    const inputs = models[0]['executor'] ? Object.values(models[0].modelSignature['inputs']) : undefined;
    inputSize[0][0] = Array.isArray(inputs) ? parseInt(inputs[0].tensorShape.dim[1].size) : 0;
    inputSize[0][1] = Array.isArray(inputs) ? parseInt(inputs[0].tensorShape.dim[2].size) : 0;
  } else if (config.debug) log('cached model:', models[0]['modelUrl']);
@ -87,7 +87,7 @@ export async function loadSkeleton(config: Config): Promise<GraphModel> {
  if (env.initial) models[1] = null;
  if (!models[1]) {
    models[1] = await loadModel(config.hand.skeleton?.modelPath);
-    const inputs = Object.values(models[1].modelSignature['inputs']);
+    const inputs = models[1]['executor'] ? Object.values(models[1].modelSignature['inputs']) : undefined;
    inputSize[1][0] = Array.isArray(inputs) ? parseInt(inputs[0].tensorShape.dim[1].size) : 0;
    inputSize[1][1] = Array.isArray(inputs) ? parseInt(inputs[0].tensorShape.dim[2].size) : 0;
  } else if (config.debug) log('cached model:', models[1]['modelUrl']);
@ -182,7 +182,7 @@ async function detectFingers(input: Tensor, h: HandDetectResult, config: Config)
 }

 export async function predict(input: Tensor, config: Config): Promise<HandResult[]> {
-  if (!models[0] || !models[1] || !models[0].inputs[0].shape || !models[1].inputs[0].shape) return []; // something is wrong with the model
+  if (!models[0]?.['executor'] || !models[1]?.['executor'] || !models[0].inputs[0].shape || !models[1].inputs[0].shape) return []; // something is wrong with the model
  outputSize = [input.shape[2] || 0, input.shape[1] || 0];
  skipped++; // increment skip frames
  const skipTime = (config.hand.skipTime || 0) > (now() - lastTime);
--- a/src/models.ts
+++ b/src/models.ts
@ -164,7 +164,9 @@ export function validateModel(newInstance: Human | null, model: GraphModel | nul
      if (!ops.includes(op)) ops.push(op);
    }
  } else {
-    if (!executor && instance.config.debug) log('model signature not determined:', name);
+    if (!executor && instance.config.debug) {
+      log('model not loaded', name);
+    }
  }
  for (const op of ops) {
    if (!simpleOps.includes(op) // exclude simple ops
--- a/src/object/centernet.ts
+++ b/src/object/centernet.ts
@ -24,7 +24,7 @@ export async function load(config: Config): Promise<GraphModel> {
  if (!model) {
    // fakeOps(['floormod'], config);
    model = await loadModel(config.object.modelPath);
-    const inputs = Object.values(model.modelSignature['inputs']);
+    const inputs = model?.['executor'] ? Object.values(model.modelSignature['inputs']) : undefined;
    inputSize = Array.isArray(inputs) ? parseInt(inputs[0].tensorShape.dim[2].size) : 0;
  } else if (config.debug) log('cached model:', model['modelUrl']);
  return model;
@ -72,6 +72,7 @@ async function process(res: Tensor | null, outputShape: [number, number], config
 }

 export async function predict(input: Tensor, config: Config): Promise<ObjectResult[]> {
+  if (!model?.['executor']) return [];
  const skipTime = (config.object.skipTime || 0) > (now() - lastTime);
  const skipFrame = skipped < (config.object.skipFrames || 0);
  if (config.skipAllowed && skipTime && skipFrame && (last.length > 0)) {
--- a/src/object/nanodet.ts
+++ b/src/object/nanodet.ts
@ -25,8 +25,8 @@ const scaleBox = 2.5; // increase box size
 export async function load(config: Config): Promise<GraphModel> {
  if (!model || env.initial) {
    model = await loadModel(config.object.modelPath);
-    const inputs = Object.values(model.modelSignature['inputs']);
-    inputSize = Array.isArray(inputs) ? parseInt(inputs[0].tensorShape.dim[2].size) : 0;
+    const inputs = model?.['executor'] ? Object.values(model.modelSignature['inputs']) : undefined;
+    inputSize = Array.isArray(inputs) ? parseInt(inputs[0].tensorShape.dim[2].size) : 416;
  } else if (config.debug) log('cached model:', model['modelUrl']);
  return model;
 }
@ -106,6 +106,7 @@ async function process(res: Tensor[], outputShape: [number, number], config: Con
 }

 export async function predict(image: Tensor, config: Config): Promise<ObjectResult[]> {
+  if (!model?.['executor']) return [];
  const skipTime = (config.object.skipTime || 0) > (now() - lastTime);
  const skipFrame = skipped < (config.object.skipFrames || 0);
  if (config.skipAllowed && skipTime && skipFrame && (last.length > 0)) {
--- a/src/tfjs/backend.ts
+++ b/src/tfjs/backend.ts
@ -1,31 +1,68 @@
 /** TFJS backend initialization and customization */

-import type { Human } from '../human';
+import type { Human, Config } from '../human';
 import { log, now } from '../util/util';
 import { env } from '../util/env';
 import * as humangl from './humangl';
 import * as tf from '../../dist/tfjs.esm.js';
 import * as constants from './constants';

-function registerCustomOps() {
+function registerCustomOps(config: Config) {
  if (!env.kernels.includes('mod')) {
    const kernelMod = {
      kernelName: 'Mod',
      backendName: tf.getBackend(),
      kernelFunc: (op) => tf.tidy(() => tf.sub(op.inputs.a, tf.mul(tf.div(op.inputs.a, op.inputs.b), op.inputs.b))),
    };
+    if (config.debug) log('registered kernel:', 'Mod');
    tf.registerKernel(kernelMod);
    env.kernels.push('mod');
  }
  if (!env.kernels.includes('floormod')) {
-    const kernelMod = {
+    const kernelFloorMod = {
      kernelName: 'FloorMod',
      backendName: tf.getBackend(),
      kernelFunc: (op) => tf.tidy(() => tf.add(tf.mul(tf.floorDiv(op.inputs.a / op.inputs.b), op.inputs.b), tf.mod(op.inputs.a, op.inputs.b))),
    };
-    tf.registerKernel(kernelMod);
+    if (config.debug) log('registered kernel:', 'FloorMod');
+    tf.registerKernel(kernelFloorMod);
    env.kernels.push('floormod');
  }
+  /*
+  if (!env.kernels.includes('atan2') && config.softwareKernels) {
+    const kernelAtan2 = {
+      kernelName: 'Atan2',
+      backendName: tf.getBackend(),
+      kernelFunc: (op) => tf.tidy(() => {
+        const backend = tf.getBackend();
+        tf.setBackend('cpu');
+        const t = tf.atan2(op.inputs.a, op.inputs.b);
+        tf.setBackend(backend);
+        return t;
+      }),
+    };
+    if (config.debug) log('registered kernel:', 'atan2');
+    log('registered kernel:', 'atan2');
+    tf.registerKernel(kernelAtan2);
+    env.kernels.push('atan2');
+  }
+  */
+  if (!env.kernels.includes('rotatewithoffset') && config.softwareKernels) {
+    const kernelRotateWithOffset = {
+      kernelName: 'RotateWithOffset',
+      backendName: tf.getBackend(),
+      kernelFunc: (op) => tf.tidy(() => {
+        const backend = tf.getBackend();
+        tf.setBackend('cpu');
+        const t = tf.image.rotateWithOffset(op.inputs.image, op.attrs.radians, op.attrs.fillValue, op.attrs.center);
+        tf.setBackend(backend);
+        return t;
+      }),
+    };
+    if (config.debug) log('registered kernel:', 'RotateWithOffset');
+    tf.registerKernel(kernelRotateWithOffset);
+    env.kernels.push('rotatewithoffset');
+  }
 }

 export async function check(instance: Human, force = false) {
@ -146,7 +183,7 @@ export async function check(instance: Human, force = false) {
    instance.config.backend = tf.getBackend();

    await env.updateBackend(); // update env on backend init
-    registerCustomOps();
+    registerCustomOps(instance.config);
    // await env.updateBackend(); // update env on backend init
  }
  return true;
--- a/test/README.md
+++ b/test/README.md
@ -7,9 +7,6 @@ Not required for normal funcioning of library
 ### NodeJS using TensorFlow library

 - Image filters are disabled due to lack of Canvas and WebGL access
- Face rotation is disabled for `NodeJS` platform:  
-  `Kernel 'RotateWithOffset' not registered for backend 'tensorflow'`  
-  <https://github.com/tensorflow/tfjs/issues/4606>

 ### NodeJS using WASM

--- a/test/build.log
+++ b/test/build.log
--- a/test/node.js
+++ b/test/node.js
@ -8,10 +8,12 @@ let logFile = 'test.log';
 log.configure({ inspect: { breakLength: 350 } });

 const tests = [
-  'test-node.js',
-  'test-node-gpu.js',
-  'test-node-wasm.js',
-  // 'test-node-cpu.js',
+  'test-node-load.js',
+  'test-node-gear.js',
+  'test-backend-node.js',
+  'test-backend-node-gpu.js',
+  'test-backend-node-wasm.js',
+  // 'test-backend-node-cpu.js',
 ];

 const demos = [
--- a/test/test-backend-node-cpu.js
+++ b/test/test-backend-node-cpu.js
@ -1,6 +1,6 @@
 process.env.TF_CPP_MIN_LOG_LEVEL = '2';
-const Human = require('../dist/human.node.js').default;
-const test = require('./test-main.js').test;
+const H = require('../dist/human.node.js');
+const test = require('./test-node-main.js').test;

 const config = {
  cacheSensitivity: 0,
@ -10,7 +10,7 @@ const config = {
  async: true,
  face: {
    enabled: true,
-    detector: { rotation: true },
+    detector: { rotation: false },
    mesh: { enabled: true },
    iris: { enabled: true },
    description: { enabled: true },
@ -25,4 +25,8 @@ const config = {
  filter: { enabled: false },
 };

-test(Human, config);
+async function main() {
+  test(H.Human, config);
+}
+
+if (require.main === module) main();
--- a/test/test-backend-node-gpu.js
+++ b/test/test-backend-node-gpu.js
@ -1,6 +1,6 @@
 process.env.TF_CPP_MIN_LOG_LEVEL = '2';
 const H = require('../dist/human.node-gpu.js');
-const test = require('./test-main.js').test;
+const test = require('./test-node-main.js').test;

 const config = {
  cacheSensitivity: 0,
@ -10,7 +10,7 @@ const config = {
  async: true,
  face: {
    enabled: true,
-    detector: { rotation: true },
+    detector: { rotation: false },
    mesh: { enabled: true },
    iris: { enabled: true },
    description: { enabled: true },
@ -29,4 +29,4 @@ async function main() {
  test(H.Human, config);
 }

-main();
+if (require.main === module) main();
--- a/test/test-backend-node-wasm.js
+++ b/test/test-backend-node-wasm.js
@ -3,7 +3,7 @@ const tf = require('@tensorflow/tfjs'); // wasm backend requires tfjs to be load
 const wasm = require('@tensorflow/tfjs-backend-wasm'); // wasm backend does not get auto-loaded in nodejs
 const { Canvas, Image } = require('canvas'); // eslint-disable-line node/no-extraneous-require, node/no-missing-require
 const H = require('../dist/human.node-wasm.js');
-const test = require('./test-main.js').test;
+const test = require('./test-node-main.js').test;

 H.env.Canvas = Canvas; // requires monkey-patch as wasm does not have tf.browser namespace
 H.env.Image = Image; // requires monkey-patch as wasm does not have tf.browser namespace
@ -16,6 +16,7 @@ const config = {
  wasmPath: `https://cdn.jsdelivr.net/npm/@tensorflow/tfjs-backend-wasm@${tf.version_core}/dist/`,
  debug: false,
  async: false,
+  softwareKernels: true,
  face: {
    enabled: true,
    detector: { rotation: false },
@ -42,4 +43,4 @@ async function main() {
  test(H.Human, config);
 }

-main();
+if (require.main === module) main();
--- a/test/test-backend-node.js
+++ b/test/test-backend-node.js
@ -1,7 +1,7 @@
 process.env.TF_CPP_MIN_LOG_LEVEL = '2';

 const H = require('../dist/human.node.js');
-const test = require('./test-main.js').test;
+const test = require('./test-node-main.js').test;

 const config = {
  cacheSensitivity: 0,
@ -11,7 +11,7 @@ const config = {
  async: true,
  face: {
    enabled: true,
-    detector: { rotation: true },
+    detector: { rotation: false },
    mesh: { enabled: true },
    iris: { enabled: true },
    description: { enabled: true },
@ -30,4 +30,4 @@ async function main() {
  test(H.Human, config);
 }

-main();
+if (require.main === module) main();
--- a/test/test-load.js
+++ b/test/test-load.js
@ -1,19 +0,0 @@
-const tf = require('@tensorflow/tfjs-node'); // in nodejs environments tfjs-node is required to be loaded before human
-const Human = require('../dist/human.node.js'); // use this when using human in dev mode
-
-async function main() {
-  const log = (...msg) => console.log(...msg); // eslint-disable-line no-console
-  const human = new Human.Human(); // create instance of human using default configuration
-  const startTime = new Date();
-  log('start', { human: human.version, tf: tf.version_core, progress: human.getModelStats().percentageLoaded });
-  setInterval(() => log('interval', { elapsed: new Date() - startTime, progress: human.getModelStats().percentageLoaded }));
-  const loadPromise = human.load();
-  loadPromise
-    .then(() => log('resolved', { progress: human.getModelStats().percentageLoaded }))
-    .catch(() => log('error'));
-  await loadPromise;
-  log('final', { progress: human.getModelStats().percentageLoaded });
-  await human.warmup(); // optional as model warmup is performed on-demand first time its executed
-}
-
-main();
--- a/test/test-node-gear.js
+++ b/test/test-node-gear.js
@ -1,15 +1,19 @@
 require('@tensorflow/tfjs-node');
 const fs = require('fs');
 const path = require('path');
-const log = require('@vladmandic/pilogger');
 const Human = require('../dist/human.node.js').default;

+const log = (status, ...data) => {
+  if (typeof process.send !== 'undefined') process.send([status, data]); // send to parent process over ipc
+  else console.log(status, ...data); // eslint-disable-line no-console
+};
+
 process.env.TF_CPP_MIN_LOG_LEVEL = '2';
 const humanConfig = {
  backend: 'tensorflow',
  face: {
    detector: { enabled: true, modelPath: 'file://../human-models/models/blazeface-back.json', cropFactor: 1.6 },
-    mesh: { enabled: false },
+    mesh: { enabled: true },
    iris: { enabled: false },
    description: { enabled: true, modelPath: 'file://../human-models/models/faceres.json' },
    gear: { enabled: true, modelPath: 'file://../human-models/models/gear.json' },
@ -29,47 +33,63 @@ function getImageTensor(imageFile) {
    const buffer = fs.readFileSync(imageFile);
    tensor = human.tf.node.decodeImage(buffer, 3);
  } catch (e) {
-    log.warn(`error loading image: ${imageFile}: ${e.message}`);
+    log('error', `failed: loading image ${imageFile}: ${e.message}`);
  }
  return tensor;
 }

 function printResult(obj) {
-  if (!obj || !obj.res || !obj.res.face || obj.res.face.length === 0) log.warn('no faces detected');
-  else obj.res.face.forEach((face, i) => log.data({ face: i, model: obj.model, image: obj.image, age: face.age, gender: face.gender, genderScore: face.genderScore, race: face.race }));
+  if (!obj || !obj.res || !obj.res.face || obj.res.face.length === 0) log('warn', 'failed: no faces detected');
+  else obj.res.face.forEach((face, i) => log('data', 'results', { face: i, model: obj.model, image: obj.image, age: face.age, gender: face.gender, genderScore: face.genderScore, race: face.race }));
 }

 async function main() {
-  log.header();
-  if (process.argv.length !== 3) throw new Error('parameters: <input-image> or <input-folder> missing');
-  if (!fs.existsSync(process.argv[2])) throw new Error(`file not found: ${process.argv[2]}`);
-  const stat = fs.statSync(process.argv[2]);
+  const inputs = process.argv.length === 3 ? process.argv[2] : 'samples/in/ai-face.jpg';
+  if (!fs.existsSync(inputs)) throw new Error(`file not found: ${inputs}`);
+  const stat = fs.statSync(inputs);
  const files = [];
-  if (stat.isFile()) files.push(process.argv[2]);
-  else if (stat.isDirectory()) fs.readdirSync(process.argv[2]).forEach((f) => files.push(path.join(process.argv[2], f)));
-  log.data('input:', files);
+  if (stat.isFile()) files.push(inputs);
+  else if (stat.isDirectory()) fs.readdirSync(inputs).forEach((f) => files.push(path.join(inputs, f)));
+  log('data', 'input:', files);
  await human.load();
  let res;
  for (const f of files) {
    const tensor = getImageTensor(f);
    if (!tensor) continue;
+    let msg = {};
+
    human.config.face.description.enabled = true;
    human.config.face.gear.enabled = false;
    human.config.face.ssrnet.enabled = false;
    res = await human.detect(tensor);
-    printResult({ model: 'faceres', image: f, res });
+
+    msg = { model: 'faceres', image: f, res };
+    if (res?.face?.[0].age > 20 && res?.face?.[0].age < 30) log('state', 'passed: gear', msg.model, msg.image);
+    else log('error', 'failed: gear', msg);
+    printResult(msg);
+
    human.config.face.description.enabled = false;
    human.config.face.gear.enabled = true;
    human.config.face.ssrnet.enabled = false;
    res = await human.detect(tensor);
-    printResult({ model: 'gear', image: f, res });
+    msg = { model: 'gear', image: f, res };
+    if (res?.face?.[0].age > 20 && res?.face?.[0].age < 30) log('state', 'passed: gear', msg.model, msg.image);
+    else log('error', 'failed: gear', msg);
+    printResult(msg);
+
    human.config.face.description.enabled = false;
    human.config.face.gear.enabled = false;
    human.config.face.ssrnet.enabled = true;
    res = await human.detect(tensor);
-    printResult({ model: 'ssrnet', image: f, res });
+    msg = { model: 'ssrnet', image: f, res };
+    if (res?.face?.[0].age > 20 && res?.face?.[0].age < 30) log('state', 'passed: gear', msg.model, msg.image);
+    else log('error', 'failed: gear', msg);
+    printResult(msg);
+
    human.tf.dispose(tensor);
  }
 }

-main();
+exports.test = main;
+
+if (require.main === module) main();
--- a/test/test-node-load.js
+++ b/test/test-node-load.js
@ -0,0 +1,33 @@
+const tf = require('@tensorflow/tfjs-node'); // in nodejs environments tfjs-node is required to be loaded before human
+const Human = require('../dist/human.node.js'); // use this when using human in dev mode
+
+const log = (status, ...data) => {
+  if (typeof process.send !== 'undefined') process.send([status, data]); // send to parent process over ipc
+  else console.log(status, ...data); // eslint-disable-line no-console
+};
+
+async function main() {
+  const human = new Human.Human(); // create instance of human using default configuration
+  const startTime = new Date();
+  log('info', 'load start', { human: human.version, tf: tf.version_core, progress: human.getModelStats().percentageLoaded });
+
+  async function monitor() {
+    const progress = human.getModelStats().percentageLoaded;
+    log('data', 'load interval', { elapsed: new Date() - startTime, progress });
+    if (progress < 1) setTimeout(monitor, 10);
+  }
+
+  monitor();
+  // setInterval(() => log('interval', { elapsed: new Date() - startTime, progress: human.getModelStats().percentageLoaded }));
+  const loadPromise = human.load();
+  loadPromise
+    .then(() => log('state', 'passed', { progress: human.getModelStats().percentageLoaded }))
+    .catch(() => log('error', 'load promise'));
+  await loadPromise;
+  log('info', 'load final', { progress: human.getModelStats().percentageLoaded });
+  await human.warmup(); // optional as model warmup is performed on-demand first time its executed
+}
+
+exports.test = main;
+
+if (require.main === module) main();
--- a/test/test-node-main.js
+++ b/test/test-node-main.js
@ -487,6 +487,7 @@ async function test(Human, inputConfig) {
  // test face attention
  log('info', 'test face attention');
  human.models.facemesh = null;
+  config.softwareKernels = true;
  config.face.attention = { enabled: true, modelPath: 'https://vladmandic.github.io/human-models/models/facemesh-attention.json' };
  res = await testDetect(human, 'samples/in/ai-face.jpg', 'face attention');
  if (!res || !res.face[0] || res.face[0].mesh.length !== 478 || Object.keys(res.face[0].annotations).length !== 36) log('error', 'failed: face attention', { mesh: res.face?.[0]?.mesh?.length, annotations: Object.keys(res.face?.[0]?.annotations | {}).length });
--- a/test/test.log
+++ b/test/test.log