Opencv.js face detection

@@ -41,53 +41,48 @@ if (navigator.mediaDevices.getUserMedia){
 }
 </script>
 <script>
-function openCvReady() {
-    cv['onRuntimeInitialized']=()=>{
-        // do all your work here
-        let video = document.getElementById('videoElement');
-        let src = new cv.Mat(video.height, video.width, cv.CV_8UC4);
-        let dst = new cv.Mat(video.height, video.width, cv.CV_8UC4);
-        let gray = new cv.Mat();
-        let cap = new cv.RectVector();
-        let classifier = new cv.CascadeClassifier();
-        classifier.load("{{url_for('static', filename='js/haarcascade_frontalface_default.xml')}}")
-        const FPS = 30;
-        function processVideo() {
-            try {
-                if (!streaming) {
-                    // clean and stop.
-                    src.delete();
-                    dst.delete();
-                    gray.delete();
-                    faces.delete();
-                    classifier.delete();
-                    return;
-                }
-                let begin = Date.now();
-                // start processing.
-                cap.read(src);
-                src.copyTo(dst);
-                cv.cvtColor(dst, gray, cv.COLOR_RGBA2GRAY, 0);
-                // detect faces.
-                classifier.detectMultiScale(gray, faces, 1.1, 3, 0);
-                // draw faces.
-                for (let i = 0; i < faces.size(); ++i) {
-                    let face = faces.get(i);
-                    let point1 = new cv.Point(face.x, face.y);
-                    let point2 = new cv.Point(face.x + face.width, face.y + face.height);
-                    cv.rectangle(dst, point1, point2, [255, 0, 0, 255]);
-                }
-                cv.imshow('canvasOutput', dst);
-                // schedule the next one.
-                let delay = 1000/FPS - (Date.now() - begin);
-                setTimeout(processVideo, delay);
-            } catch (err) {
-                utils.printError(err);
-        }
-        // schedule the first one.
-        setTimeout(processVideo, 0);
-    };
-}
+    let video = document.getElementById('videoElement');
+    let src = new cv.Mat(video.height, video.width, cv.CV_8UC4);
+    let dst = new cv.Mat(video.height, video.width, cv.CV_8UC4);
+    let gray = new cv.Mat();
+    let cap = new cv.RectVector();
+    let classifier = new cv.CascadeClassifier();
+    classifier.load("{{url_for('static', filename='js/haarcascade_frontalface_default.xml')}}")
+    const FPS = 30;
+    function processVideo() {
+        try {
+            if (!streaming) {
+                // clean and stop.
+                src.delete();
+                dst.delete();
+                gray.delete();
+                faces.delete();
+                classifier.delete();
+                return;
+            }
+            let begin = Date.now();
+            // start processing.
+            cap.read(src);
+            src.copyTo(dst);
+            cv.cvtColor(dst, gray, cv.COLOR_RGBA2GRAY, 0);
+            // detect faces.
+            classifier.detectMultiScale(gray, faces, 1.1, 3, 0);
+            // draw faces.
+            for (let i = 0; i < faces.size(); ++i) {
+                let face = faces.get(i);
+                let point1 = new cv.Point(face.x, face.y);
+                let point2 = new cv.Point(face.x + face.width, face.y + face.height);
+                cv.rectangle(dst, point1, point2, [255, 0, 0, 255]);
+            }
+            cv.imshow('canvasOutput', dst);
+            // schedule the next one.
+            let delay = 1000/FPS - (Date.now() - begin);
+            setTimeout(processVideo, delay);
+        } catch (err) {
+            utils.printError(err);
+    }
+    // schedule the first one.
+    setTimeout(processVideo, 0);
 </script>
 </body>
 </html>