javascript tracking webcam

JavaScript
<!DOCTYPE html>
 
<html lang="en">
 
  <head>
    <meta charset="UTF-8">
    <title>Tracking Color Blobs in Webcam Feed Using Tracking.js</title>
    <link rel="stylesheet" href="styles.css">
    <script src="tracking-min.js"></script>
    <script src="script.js"></script>
  </head>
 
  <body>
 
    <div class="display">
      <video id="webcam" width="640" height="480" autoplay></video>
      <canvas id="canvas" width="640" height="480"></canvas>
    </div>
 
    <div class="ui">
 
      <div class="controls">
 
        <p>Click on the webcam feed to pick a color, then adjust tolerance.</p>
 
        <div>
          <label for="tolerance">Tolerance:</label>
          <input id="tolerance" type="range" value="10" max="255" min="0" step="1">
        </div>
 
      </div>
 
      <div id="color"></div>
 
    </div>
 
  </body>
 
</html>
Source

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