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index.html
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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<script src="https://cdn.jsdelivr.net/npm/@mediapipe/camera_utils/camera_utils.js" crossorigin="anonymous"></script>
<script src="https://cdn.jsdelivr.net/npm/@mediapipe/control_utils/control_utils.js" crossorigin="anonymous"></script>
<script src="https://cdn.jsdelivr.net/npm/@mediapipe/drawing_utils/drawing_utils.js" crossorigin="anonymous"></script>
<script src="https://cdn.jsdelivr.net/npm/@mediapipe/hands/hands.js" crossorigin="anonymous"></script>
</head>
<body>
<div class="container">
<video class="input_video"></video>
<canvas class="output_canvas" width="1280px" height="720px"></canvas>
</div>
</body>
</html>
<script type="module">
const videoElement = document.getElementsByClassName('input_video')[0];
const canvasElement = document.getElementsByClassName('output_canvas')[0];
const canvasCtx = canvasElement.getContext('2d');
function onResults(results) {
canvasCtx.save();
canvasCtx.clearRect(0, 0, canvasElement.width, canvasElement.height);
canvasCtx.drawImage(
results.image, 0, 0, canvasElement.width, canvasElement.height);
if (results.multiHandLandmarks) {
for (const landmarks of results.multiHandLandmarks) {
drawConnectors(canvasCtx, landmarks, HAND_CONNECTIONS,
{color: '#00FF00', lineWidth: 5});
drawLandmarks(canvasCtx, landmarks, {color: '#FF0000', lineWidth: 2});
}
}
canvasCtx.restore();
}
const hands = new Hands({locateFile: (file) => {
return `https://cdn.jsdelivr.net/npm/@mediapipe/hands/${file}`;
}});
hands.setOptions({
maxNumHands: 2,
modelComplexity: 1,
minDetectionConfidence: 0.5,
minTrackingConfidence: 0.5
});
hands.onResults(onResults);
const camera = new Camera(videoElement, {
onFrame: async () => {
await hands.send({image: videoElement});
},
width: 1280,
height: 720
});
camera.start();
</script>