Below is my Code
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);
$.post('image-data', {"imageInRectangle": ??????}, function(res){
});
At the place of ?????? , I need to capture the face image in rectangle as string and send the Image to server .