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A modern approach for Computer Vision on the web.
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HTML
<html lang="en-US">
<head>
<meta charset="UTF-8">
<title></title>
<script type="text/javascript" src="opencv_haarcascade_frontalface_alt.js"></script>
<script type="text/javascript" src="opencv_haarcascade_eye.js"></script>
<script type="text/javascript" src="opencv_haarcascade_upper_body.js"></script>
<script type="text/javascript" src="opencv_haarcascade_mouth.js"></script>
</head>
<body>
<script>
// [
// [
// -1, // index
// 0.8226894140243530, // stage threshold
// // tree
// [
// // node 1
// [
// 3, 7, 14, 4, -1, // rect1
// 3, 9, 14, 2, 2, // rect 2
// 4.0141958743333817e-003, // node threshold
// 0.0337941907346249, // left
// 0.8378106951713562 // right
// ],
// // node 2
// [
// 3, 7, 14, 4, -1,
// 3, 9, 14, 2, 2,
// 4.0141958743333817e-003,
// 0.0337941907346249,
// 0.8378106951713562
// ]
// ]
// ]
// ];
var toFloat = function(v) {
// return parseFloat(parseFloat(v).toFixed(1));
return parseFloat(v);
},
toInt = function(v) {
return parseInt(v, 10);
},
convert = function(haarcascade) {
var stages = [],
hstages = haarcascade.stages,
i,
j;
for (i = 0; i < hstages.length; i++) {
var stage = [],
trees = [],
hstage = hstages[i],
htrees = hstage.trees,
parent = toInt(hstage.parent),
stageThreshold = toFloat(hstage.stage_threshold);
for (j = 0; j < htrees.length; j++) {
var node = [],
hnode = htrees[j][0],
hnodeThreshold = toFloat(hnode.threshold),
hnodeLeft = toFloat(hnode.left_val),
hnodeRight = toFloat(hnode.right_val),
hnodeRects = hnode.feature.rects,
hr,
r;
for (r = 0; r < hnodeRects.length; r++) {
hr = hnodeRects[r].split(" ").map(toFloat),
node = node.concat(hr);
}
node.push(hnodeThreshold, hnodeLeft, hnodeRight);
trees.push(node);
}
stage.push(parent, stageThreshold, trees);
stages.push(stage);
}
console.log(stages);
return JSON.stringify(stages);
};
// output
// var json = convert(opencv_haarcascade_frontalface_alt);
// var json = convert(opencv_haarcascade_eye);
// var json = convert(opencv_haarcascade_upper_body);
var json = convert(opencv_haarcascade_mouth);
console.log(json);
</script>
</body>
</html>