human/dist/human.esm-nobundle.js

  /*
  Human library
  homepage: <https://github.com/vladmandic/human>
  author: <https://github.com/vladmandic>'
  */

var __create=Object.create,__defProp=Object.defineProperty,__getProtoOf=Object.getPrototypeOf,__hasOwnProp=Object.prototype.hasOwnProperty,__getOwnPropNames=Object.getOwnPropertyNames,__getOwnPropDesc=Object.getOwnPropertyDescriptor,__markAsModule=target=>__defProp(target,"__esModule",{value:!0}),__commonJS=(callback,module)=>()=>(module||(module={exports:{}},callback(module.exports,module)),module.exports),__export=(target,all)=>{__markAsModule(target);for(var name in all)__defProp(target,name,{get:all[name],enumerable:!0})},__exportStar=(target,module,desc)=>{if(__markAsModule(target),module&&typeof module=="object"||typeof module=="function")for(let key of __getOwnPropNames(module))!__hasOwnProp.call(target,key)&&key!=="default"&&__defProp(target,key,{get:()=>module[key],enumerable:!(desc=__getOwnPropDesc(module,key))||desc.enumerable});return target},__toModule=module=>module&&module.__esModule?module:__exportStar(__defProp(module!=null?__create(__getProtoOf(module)):{},"default",{value:module,enumerable:!0}),module);import*as dist_star from"@tensorflow/tfjs/dist/index.js";import*as tfjs_backend_wasm_star from"@tensorflow/tfjs-backend-wasm";var require_tfjs_esm=__commonJS(exports=>{__exportStar(exports,dist_star);__exportStar(exports,tfjs_backend_wasm_star)}),require_blazeface=__commonJS(exports=>{var tf3=__toModule(require_tfjs_esm()),NUM_LANDMARKS=6;function generateAnchors(inputSize){let spec={strides:[inputSize/16,inputSize/8],anchors:[2,6]},anchors=[];for(let i=0;i<spec.strides.length;i++){let stride=spec.strides[i],gridRows=Math.floor((inputSize+stride-1)/stride),gridCols=Math.floor((inputSize+stride-1)/stride),anchorsNum=spec.anchors[i];for(let gridY=0;gridY<gridRows;gridY++){let anchorY=stride*(gridY+.5);for(let gridX=0;gridX<gridCols;gridX++){let anchorX=stride*(gridX+.5);for(let n=0;n<anchorsNum;n++)anchors.push([anchorX,anchorY])}}}return anchors}var disposeBox=box=>{box.startEndTensor.dispose(),box.startPoint.dispose(),box.endPoint.dispose()},createBox=startEndTensor=>({startEndTensor,startPoint:tf3.slice(startEndTensor,[0,0],[-1,2]),endPoint:tf3.slice(startEndTensor,[0,2],[-1,2])}),scaleBox=(box,factors)=>{let starts=tf3.mul(box.startPoint,factors),ends=tf3.mul(box.endPoint,factors),newCoordinates=tf3.concat2d([starts,ends],1);return createBox(newCoordinates)};function decodeBounds(boxOutputs,anchors,inputSize){let boxStarts=tf3.slice(boxOutputs,[0,1],[-1,2]),centers=tf3.add(boxStarts,anchors),boxSizes=tf3.slice(boxOutputs,[0,3],[-1,2]),boxSizesNormalized=tf3.div(boxSizes,inputSize),centersNormalized=tf3.div(centers,inputSize),halfBoxSize=tf3.div(boxSizesNormalized,2),starts=tf3.sub(centersNormalized,halfBoxSize),ends=tf3.add(centersNormalized,halfBoxSize),startNormalized=tf3.mul(starts,inputSize),endNormalized=tf3.mul(ends,inputSize),concatAxis=1;return tf3.concat2d([startNormalized,endNormalized],concatAxis)}function scaleBoxFromPrediction(face3,scaleFactor){return tf3.tidy(()=>{let box=face3.box?face3.box:face3;return scaleBox(box,scaleFactor).startEndTensor.squeeze()})}var BlazeFaceModel=class{constructor(model,config){this.blazeFaceModel=model,this.width=config.face.detector.inputSize,this.height=config.face.detector.inputSize,this.anchorsData=generateAnchors(config.face.detector.inputSize),this.anchors=tf3.tensor2d(this.anchorsData),this.inputSize=tf3.tensor1d([this.width,this.height]),this.config=config,this.scaleFaces=.8}async getBoundingBoxes(inputImage){if(!inputImage||inputImage.isDisposedInternal||inputImage.shape.length!==4||inputImage.shape[1]<1||inputImage.shape[2]<1)return null;let[detectedOutputs,boxes,scores]=tf3.tidy(()=>{let resizedImage=inputImage.resizeBilinear([this.width,this.height]),normalizedImage=tf3.sub(resizedImage.div(127.5),1),batchedPrediction=this.blazeFaceModel.predict(normalizedImage),prediction;if(Array.isArray(batchedPrediction)){let sorted=batchedPrediction.sort((a,b)=>a.size-b.size),concat384=tf3.concat([sorted[0],sorted[2]],2),concat512=tf3.concat([sorted[1],sorted[3]],2),concat2=tf3.concat([concat512,concat384],1);prediction=concat2.squeeze(0)}else prediction=ba
`),SHADER.FRAGMENT_IDENTITY=["precision highp float;","varying vec2 vUv;","uniform sampler2D texture;","void main(void) {","gl_FragColor = texture2D(texture, vUv);","}"].join(`
`);let _filter={};_filter.colorMatrix=function(matrix){let m=new Float32Array(matrix);m[4]/=255,m[9]/=255,m[14]/=255,m[19]/=255;let shader=m[18]===1&&m[3]===0&&m[8]===0&&m[13]===0&&m[15]===0&&m[16]===0&&m[17]===0&&m[19]===0?_filter.colorMatrix.SHADER.WITHOUT_ALPHA:_filter.colorMatrix.SHADER.WITH_ALPHA,program=_compileShader(shader);gl.uniform1fv(program.uniform.m,m),_draw()},_filter.colorMatrix.SHADER={},_filter.colorMatrix.SHADER.WITH_ALPHA=["precision highp float;","varying vec2 vUv;","uniform sampler2D texture;","uniform float m[20];","void main(void) {","vec4 c = texture2D(texture, vUv);","gl_FragColor.r = m[0] * c.r + m[1] * c.g + m[2] * c.b + m[3] * c.a + m[4];","gl_FragColor.g = m[5] * c.r + m[6] * c.g + m[7] * c.b + m[8] * c.a + m[9];","gl_FragColor.b = m[10] * c.r + m[11] * c.g + m[12] * c.b + m[13] * c.a + m[14];","gl_FragColor.a = m[15] * c.r + m[16] * c.g + m[17] * c.b + m[18] * c.a + m[19];","}"].join(`
`),_filter.colorMatrix.SHADER.WITHOUT_ALPHA=["precision highp float;","varying vec2 vUv;","uniform sampler2D texture;","uniform float m[20];","void main(void) {","vec4 c = texture2D(texture, vUv);","gl_FragColor.r = m[0] * c.r + m[1] * c.g + m[2] * c.b + m[4];","gl_FragColor.g = m[5] * c.r + m[6] * c.g + m[7] * c.b + m[9];","gl_FragColor.b = m[10] * c.r + m[11] * c.g + m[12] * c.b + m[14];","gl_FragColor.a = c.a;","}"].join(`
`),_filter.brightness=function(brightness){let b=(brightness||0)+1;_filter.colorMatrix([b,0,0,0,0,0,b,0,0,0,0,0,b,0,0,0,0,0,1,0])},_filter.saturation=function(amount){let x=(amount||0)*2/3+1,y=(x-1)*-.5;_filter.colorMatrix([x,y,y,0,0,y,x,y,0,0,y,y,x,0,0,0,0,0,1,0])},_filter.desaturate=function(){_filter.saturation(-1)},_filter.contrast=function(amount){let v=(amount||0)+1,o=-128*(v-1);_filter.colorMatrix([v,0,0,0,o,0,v,0,0,o,0,0,v,0,o,0,0,0,1,0])},_filter.negative=function(){_filter.contrast(-2)},_filter.hue=function(rotation){rotation=(rotation||0)/180*Math.PI;let cos=Math.cos(rotation),sin=Math.sin(rotation),lumR=.213,lumG=.715,lumB=.072;_filter.colorMatrix([lumR+cos*(1-lumR)+sin*-lumR,lumG+cos*-lumG+sin*-lumG,lumB+cos*-lumB+sin*(1-lumB),0,0,lumR+cos*-lumR+sin*.143,lumG+cos*(1-lumG)+sin*.14,lumB+cos*-lumB+sin*-.283,0,0,lumR+cos*-lumR+sin*-(1-lumR),lumG+cos*-lumG+sin*lumG,lumB+cos*(1-lumB)+sin*lumB,0,0,0,0,0,1,0])},_filter.desaturateLuminance=function(){_filter.colorMatrix([.2764723,.929708,.0938197,0,-37.1,.2764723,.929708,.0938197,0,-37.1,.2764723,.929708,.0938197,0,-37.1,0,0,0,1,0])},_filter.sepia=function(){_filter.colorMatrix([.393,.7689999,.18899999,0,0,.349,.6859999,.16799999,0,0,.272,.5339999,.13099999,0,0,0,0,0,1,0])},_filter.brownie=function(){_filter.colorMatrix([.5997023498159715,.34553243048391263,-.2708298674538042,0,47.43192855600873,-.037703249837783157,.8609577587992641,.15059552388459913,0,-36.96841498319127,.24113635128153335,-.07441037908422492,.44972182064877153,0,-7.562075277591283,0,0,0,1,0])},_filter.vintagePinhole=function(){_filter.colorMatrix([.6279345635605994,.3202183420819367,-.03965408211312453,0,9.651285835294123,.02578397704808868,.6441188644374771,.03259127616149294,0,7.462829176470591,.0466055556782719,-.0851232987247891,.5241648018700465,0,5.159190588235296,0,0,0,1,0])},_filter.kodachrome=function(){_filter.colorMatrix([1.1285582396593525,-.3967382283601348,-.03992559172921793,0,63.72958762196502,-.16404339962244616,1.0835251566291304,-.05498805115633132,0,24.732407896706203,-.16786010706155763,-.5603416277695248,1.6014850761964943,0,35.62982807460946,0,0,0,1,0])},_filter.technicolor=function(){_filter.colorMatrix([1.9125277891456083,-.8545344976951645,-.09155508482755585,0,11.793603434377337,-.3087833385928097,1.7658908555458428,-.10601743074722245,0,-70.35205161461398,-.231103377548616,-.7501899197440212,1.847597816108189,0,30.950940869491138,0,0,0,1,0])},_filter.polaroid=function(){_filter.colorMatrix([1.438,-.062,-.062,0,0,-.122,1.378,-.122,0,0,-.016,-.016,1.483,0,0,0,0,0,1,0])},_filter.shiftToBGR=function(){_filter.colorMatrix([0,0,1,0,0,0,1,0,0,0,1,0,0,0,0,0,0,0,1,0])},_filter.convolution=function(matrix){let m=new Float32Array(matrix),pixelSizeX=1/_width,pixelSizeY=1/_height,program=_compileShader(_filter.convolution.SHADER);gl.uniform1fv(program.uniform.m,m),gl.uniform2f(program.uniform.px,pixelSizeX,pixelSizeY),_draw()},_filter.convolution.SHADER=["precision highp float;","varying vec2 vUv;","uniform sampler2D texture;","uniform vec2 px;","uniform float m[9];","void main(void) {","vec4 c11 = texture2D(texture, vUv - px);","vec4 c12 = texture2D(texture, vec2(vUv.x, vUv.y - px.y));","vec4 c13 = texture2D(texture, vec2(vUv.x + px.x, vUv.y - px.y));","vec4 c21 = texture2D(texture, vec2(vUv.x - px.x, vUv.y) );","vec4 c22 = texture2D(texture, vUv);","vec4 c23 = texture2D(texture, vec2(vUv.x + px.x, vUv.y) );","vec4 c31 = texture2D(texture, vec2(vUv.x - px.x, vUv.y + px.y) );","vec4 c32 = texture2D(texture, vec2(vUv.x, vUv.y + px.y) );","vec4 c33 = texture2D(texture, vUv + px );","gl_FragColor = ","c11 * m[0] + c12 * m[1] + c22 * m[2] +","c21 * m[3] + c22 * m[4] + c23 * m[5] +","c31 * m[6] + c32 * m[7] + c33 * m[8];","gl_FragColor.a = c22.a;","}"].join(`
`),_filter.detectEdges=function(){_filter.convolution.call(this,[0,1,0,1,-4,1,0,1,0])},_filter.sobelX=function(){_filter.convolution.call(this,[-1,0,1,-2,0,2,-1,0,1])},_filter.sobelY=function(){_filter.convolution.call(this,[-1,-2,-1,0,0,0,1,2,1])},_filter.sharpen=function(amount){let a=amount||1;_filter.convolution.call(this,[0,-1*a,0,-1*a,1+4*a,-1*a,0,-1*a,0])},_filter.emboss=function(size){let s=size||1;_filter.convolution.call(this,[-2*s,-1*s,0,-1*s,1,1*s,0,1*s,2*s])},_filter.blur=function(size){let blurSizeX=size/7/_width,blurSizeY=size/7/_height,program=_compileShader(_filter.blur.SHADER);gl.uniform2f(program.uniform.px,0,blurSizeY),_draw(DRAW.INTERMEDIATE),gl.uniform2f(program.uniform.px,blurSizeX,0),_draw()},_filter.blur.SHADER=["precision highp float;","varying vec2 vUv;","uniform sampler2D texture;","uniform vec2 px;","void main(void) {","gl_FragColor = vec4(0.0);","gl_FragColor += texture2D(texture, vUv + vec2(-7.0*px.x, -7.0*px.y))*0.0044299121055113265;","gl_FragColor += texture2D(texture, vUv + vec2(-6.0*px.x, -6.0*px.y))*0.00895781211794;","gl_FragColor += texture2D(texture, vUv + vec2(-5.0*px.x, -5.0*px.y))*0.0215963866053;","gl_FragColor += texture2D(texture, vUv + vec2(-4.0*px.x, -4.0*px.y))*0.0443683338718;","gl_FragColor += texture2D(texture, vUv + vec2(-3.0*px.x, -3.0*px.y))*0.0776744219933;","gl_FragColor += texture2D(texture, vUv + vec2(-2.0*px.x, -2.0*px.y))*0.115876621105;","gl_FragColor += texture2D(texture, vUv + vec2(-1.0*px.x, -1.0*px.y))*0.147308056121;","gl_FragColor += texture2D(texture, vUv                             )*0.159576912161;","gl_FragColor += texture2D(texture, vUv + vec2( 1.0*px.x,  1.0*px.y))*0.147308056121;","gl_FragColor += texture2D(texture, vUv + vec2( 2.0*px.x,  2.0*px.y))*0.115876621105;","gl_FragColor += texture2D(texture, vUv + vec2( 3.0*px.x,  3.0*px.y))*0.0776744219933;","gl_FragColor += texture2D(texture, vUv + vec2( 4.0*px.x,  4.0*px.y))*0.0443683338718;","gl_FragColor += texture2D(texture, vUv + vec2( 5.0*px.x,  5.0*px.y))*0.0215963866053;","gl_FragColor += texture2D(texture, vUv + vec2( 6.0*px.x,  6.0*px.y))*0.00895781211794;","gl_FragColor += texture2D(texture, vUv + vec2( 7.0*px.x,  7.0*px.y))*0.0044299121055113265;","}"].join(`
`),_filter.pixelate=function(size){let blurSizeX=size/_width,blurSizeY=size/_height,program=_compileShader(_filter.pixelate.SHADER);gl.uniform2f(program.uniform.size,blurSizeX,blurSizeY),_draw()},_filter.pixelate.SHADER=["precision highp float;","varying vec2 vUv;","uniform vec2 size;","uniform sampler2D texture;","vec2 pixelate(vec2 coord, vec2 size) {","return floor( coord / size ) * size;","}","void main(void) {","gl_FragColor = vec4(0.0);","vec2 coord = pixelate(vUv, size);","gl_FragColor += texture2D(texture, coord);","}"].join(`
`)};exports.Canvas=WebGLImageFilter}),require_image=__commonJS(exports=>{var tf3=__toModule(require_tfjs_esm()),fxImage=__toModule(require_imagefx()),inCanvas=null,outCanvas=null;function process3(input,config){let tensor;if(input instanceof tf3.Tensor)tensor=tf3.clone(input);else{let originalWidth=input.naturalWidth||input.videoWidth||input.width||input.shape&&input.shape[1]>0,originalHeight=input.naturalHeight||input.videoHeight||input.height||input.shape&&input.shape[2]>0,targetWidth=originalWidth,targetHeight=originalHeight;if(config.filter.width>0?targetWidth=config.filter.width:config.filter.height>0&&(targetWidth=originalWidth*(config.filter.height/originalHeight)),config.filter.height>0?targetHeight=config.filter.height:config.filter.width>0&&(targetHeight=originalHeight*(config.filter.width/originalWidth)),!targetWidth||!targetHeight)return log("Human: invalid input",input),null;(!inCanvas||inCanvas.width!==targetWidth||inCanvas.height!==targetHeight)&&(inCanvas=typeof OffscreenCanvas!="undefined"?new OffscreenCanvas(targetWidth,targetHeight):document.createElement("canvas"),inCanvas.width!==targetWidth&&(inCanvas.width=targetWidth),inCanvas.height!==targetHeight&&(inCanvas.height=targetHeight));let ctx=inCanvas.getContext("2d");if(input instanceof ImageData?ctx.putImageData(input,0,0):ctx.drawImage(input,0,0,originalWidth,originalHeight,0,0,inCanvas.width,inCanvas.height),config.filter.enabled){(!this.fx||!outCanvas||inCanvas.width!==outCanvas.width||inCanvas.height!==outCanvas.height)&&(outCanvas=typeof OffscreenCanvas!="undefined"?new OffscreenCanvas(inCanvas.width,inCanvas.height):document.createElement("canvas"),outCanvas.width!==inCanvas.width&&(outCanvas.width=inCanvas.width),outCanvas.height!==inCanvas.height&&(outCanvas.height=inCanvas.height),this.fx=tf3.ENV.flags.IS_BROWSER?new fxImage.Canvas({canvas:outCanvas}):null),this.fx.reset(),this.fx.addFilter("brightness",config.filter.brightness),config.filter.contrast!==0&&this.fx.addFilter("contrast",config.filter.contrast),config.filter.sharpness!==0&&this.fx.addFilter("sharpen",config.filter.sharpness),config.filter.blur!==0&&this.fx.addFilter("blur",config.filter.blur),config.filter.saturation!==0&&this.fx.addFilter("saturation",config.filter.saturation),config.filter.hue!==0&&this.fx.addFilter("hue",config.filter.hue),config.filter.negative&&this.fx.addFilter("negative"),config.filter.sepia&&this.fx.addFilter("sepia"),config.filter.vintage&&this.fx.addFilter("brownie"),config.filter.sepia&&this.fx.addFilter("sepia"),config.filter.kodachrome&&this.fx.addFilter("kodachrome"),config.filter.technicolor&&this.fx.addFilter("technicolor"),config.filter.polaroid&&this.fx.addFilter("polaroid"),config.filter.pixelate!==0&&this.fx.addFilter("pixelate",config.filter.pixelate),this.fx.apply(inCanvas);let gl=!1;if(gl){let glBuffer=new Uint8Array(outCanvas.width*outCanvas.height*4),pixBuffer=new Uint8Array(outCanvas.width*outCanvas.height*3);gl.readPixels(0,0,outCanvas.width,outCanvas.height,gl.RGBA,gl.UNSIGNED_BYTE,glBuffer);let i=0;for(let y=outCanvas.height-1;y>=0;y--)for(let x=0;x<outCanvas.width;x++){let index=(x+y*outCanvas.width)*4;pixBuffer[i++]=glBuffer[index+0],pixBuffer[i++]=glBuffer[index+1],pixBuffer[i++]=glBuffer[index+2]}outCanvas.data=pixBuffer}}else outCanvas=inCanvas;let pixels;if(outCanvas.data){let shape=[outCanvas.height,outCanvas.width,3];pixels=tf3.tensor3d(outCanvas.data,shape,"int32")}else if(config.backend==="webgl"||outCanvas instanceof ImageData)pixels=tf3.browser.fromPixels(outCanvas);else{let tempCanvas=typeof OffscreenCanvas!="undefined"?new OffscreenCanvas(targetWidth,targetHeight):document.createElement("canvas");tempCanvas.width=targetWidth,tempCanvas.height=targetHeight;let tempCtx=tempCanvas.getContext("2d");tempCtx.drawImage(outCanvas,0,0);let data2=tempCtx.getImageData(0,0,targetWidth,targetHeight);pixels=tf3.browser.fromPixels(data2)}let casted=pixels.toFloat();tensor=casted.expandDims(0),pixels.dispose(),casted.dispose()}return{tensor,canvas:config.filter.return?outCanvas:null}}exports.process=process3});function log(...msg){l
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euPnNY+oXWZEVJNrZ9aun8SIq/CzodHuriIokhDIR1ronbKZr0o6o8ipoz//2Q==`;var version="0.9.14",now=()=>typeof performance!="undefined"?performance.now():parseInt(Number(process.hrtime.bigint())/1e3/1e3);function mergeDeep(...objects){let isObject=obj=>obj&&typeof obj=="object";return objects.reduce((prev,obj)=>(Object.keys(obj||{}).forEach(key=>{let pVal=prev[key],oVal=obj[key];Array.isArray(pVal)&&Array.isArray(oVal)?prev[key]=pVal.concat(...oVal):isObject(pVal)&&isObject(oVal)?prev[key]=mergeDeep(pVal,oVal):prev[key]=oVal}),prev),{})}var Human=class{constructor(userConfig={}){this.tf=tf2,this.version=version,this.config=mergeDeep(config_default,userConfig),this.fx=null,this.state="idle",this.numTensors=0,this.analyzeMemoryLeaks=!1,this.checkSanity=!1,this.firstRun=!0,this.perf={},this.models={facemesh:null,posenet:null,handpose:null,iris:null,age:null,gender:null,emotion:null},this.facemesh=facemesh,this.age=age,this.gender=gender,this.emotion=emotion,this.body=posenet,this.hand=handpose}profile(){return this.config.profile?profile.data:{}}analyze(...msg){if(!this.analyzeMemoryLeaks)return;let current=tf2.engine().state.numTensors,previous=this.numTensors;this.numTensors=current;let leaked=current-previous;leaked!==0&&log(...msg,leaked)}sanity(input){if(!this.checkSanity)return null;if(!input)return"input is not defined";if(tf2.ENV.flags.IS_NODE&&!(input instanceof tf2.Tensor))return"input must be a tensor";try{tf2.getBackend()}catch(e){return"backend not loaded"}return null}simmilarity(embedding1,embedding2){return this.config.face.embedding.enabled?embedding.simmilarity(embedding1,embedding2):0}async load(userConfig){this.state="load";let timeStamp=now();userConfig&&(this.config=mergeDeep(this.config,userConfig)),this.firstRun&&(log(`version: ${this.version} TensorFlow/JS version: ${tf2.version_core}`),await this.checkBackend(!0),tf2.ENV.flags.IS_BROWSER&&(log("configuration:",this.config),log("tf flags:",tf2.ENV.flags)),this.firstRun=!1),this.config.async?[this.models.facemesh,this.models.age,this.models.gender,this.models.emotion,this.models.embedding,this.models.posenet,this.models.handpose]=await Promise.all([this.models.facemesh||(this.config.face.enabled?facemesh.load(this.config):null),this.models.age||(this.config.face.enabled&&this.config.face.age.enabled?age.load(this.config):null),this.models.gender||(this.config.face.enabled&&this.config.face.gender.enabled?gender.load(this.config):null),this.models.emotion||(this.config.face.enabled&&this.config.face.emotion.enabled?emotion.load(this.config):null),this.models.embedding||(this.config.face.enabled&&this.config.face.embedding.enabled?embedding.load(this.config):null),this.models.posenet||(this.config.body.enabled?posenet.load(this.config):null),this.models.handpose||(this.config.hand.enabled?handpose.load(this.config):null)]):(this.config.face.enabled&&!this.models.facemesh&&(this.models.facemesh=await facemesh.load(this.config)),this.config.face.enabled&&this.config.face.age.enabled&&!this.models.age&&(this.models.age=await age.load(this.config)),this.config.face.enabled&&this.config.face.gender.enabled&&!this.models.gender&&(this.models.gender=await gender.load(this.config)),this.config.face.enabled&&this.config.face.emotion.enabled&&!this.models.emotion&&(this.models.emotion=await emotion.load(this.config)),this.config.face.enabled&&this.config.face.embedding.enabled&&!this.models.embedding&&(this.models.embedding=await embedding.load(this.config)),this.config.body.enabled&&!this.models.posenet&&(this.models.posenet=await posenet.load(this.config)),this.config.hand.enabled&&!this.models.handpose&&(this.models.handpose=await handpose.load(this.config)));let current=Math.trunc(now()-timeStamp);current>(this.perf.load||0)&&(this.perf.load=current)}async checkBackend(force){if(this.config.backend&&this.config.backend!==""&&force||tf2.getBackend()!==this.config.backend){let timeStamp=now();if(this.state="backend",log("setting backend:",this.config.backend),this.config.backend==="wasm"){log("settings wasm path:",this.config.wasmPath),tf2.setWasmPaths(this.config.wasm
/**
 * @license
 * Copyright 2020 Google LLC. All Rights Reserved.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * =============================================================================
 */
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