update handtrack skip algorithm

CHANGELOG.md

@@ -11,6 +11,7 @@
   
 ### **HEAD -> main** 2021/10/13 mandic00@live.com
 
+- add optional anti-spoofing module
 - add node-match advanced example using worker thread pool
 - package updates
 - optimize image preprocessing

src/hand/handtrack.ts

@@ -196,9 +196,11 @@ export async function predict(input: Tensor, config: Config): Promise<HandResult
     return cache.hands; // return cached results without running anything
   }
   return new Promise(async (resolve) => {
-    if (config.skipFrame && skipped < 5 * (config.hand.skipFrames || 0) && cache.hands.length > 0) { // we have some cached results but although not sure if its enough we continute anyhow for bit longer
+    if (config.skipFrame && cache.hands.length === config.hand.maxDetected) { // we have all detected hands
       cache.hands = await Promise.all(cache.boxes.map((handBox) => detectFingers(input, handBox, config)));
-    } else {
+    } else if (config.skipFrame && skipped < 3 * (config.hand.skipFrames || 0) && cache.hands.length > 0) { // we have some cached results but although not sure if its enough we continute anyhow for bit longer
+      cache.hands = await Promise.all(cache.boxes.map((handBox) => detectFingers(input, handBox, config)));
+    } else { // finally rerun detector
       cache.boxes = await detectHands(input, config);
       cache.hands = await Promise.all(cache.boxes.map((handBox) => detectFingers(input, handBox, config)));
       skipped = 0;

test/test-main.js

@@ -173,7 +173,7 @@ async function test(Human, inputConfig) {
   await human.load();
   const models = Object.keys(human.models).map((model) => ({ name: model, loaded: (human.models[model] !== null) }));
   const loaded = models.filter((model) => model.loaded);
-  if (models.length === 20 && loaded.length === 10) log('state', 'passed: models loaded', models.length, loaded.length, models);
+  if (models.length === 21 && loaded.length === 10) log('state', 'passed: models loaded', models.length, loaded.length, models);
   else log('error', 'failed: models loaded', models.length, loaded.length, models);
 
   // increase defaults