未捕获（承诺）DOMException：无法在“WebGL2RenderingContext”上执行“texImage2D”：可能无法加载受污染的画布

Question

未捕获（承诺）DOMException：无法在“WebGL2RenderingContext”上执行“texImage2D”：可能无法加载受污染的画布

Bha*_*t_K 6 html javascript firefox google-chrome tensorflow.js

'''
<html>
<head>  
<meta charset="UTF-8"> 
<!-- Load TensorFlow.js -->
<script src="https://cdn.jsdelivr.net/npm/@tensorflow/tfjs"></script>
<!-- Load Posenet -->
<script src="https://cdn.jsdelivr.net/npm/@tensorflow-models/posenet"></script>
</head>

<body>
<img id='cat' src='cat.jpg '/>
</body>
<!-- Place your code in the script tag below. You can also use an external .js file -->
<script>
var flipHorizontal = false;

var imageElement = document.getElementById('cat');

posenet.load().then(function(net) {
const pose = net.estimateSinglePose(imageElement, {
flipHorizontal: true
});
return pose;
}).then(function(pose){
console.log(pose);
})
</script>
</html>
'''

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以上是我正在使用 tensorflow js 尝试posenet 的html 文件。以下是我尝试在 google chrome 中打开上述文件时收到的错误。

Uncaught (in promise) DOMException: Failed to execute 'texImage2D' on 'WebGL2RenderingContext': Tainted canvases may not be loaded.
at https://cdn.jsdelivr.net/npm/@tensorflow/tfjs:2:176404
at qt (https://cdn.jsdelivr.net/npm/@tensorflow/tfjs:2:55726)
at vi (https://cdn.jsdelivr.net/npm/@tensorflow/tfjs:2:176377)
at t.uploadPixelDataToTexture (https://cdn.jsdelivr.net/npm/@tensorflow/tfjs:2:181200)
at Object.kernelFunc (https://cdn.jsdelivr.net/npm/@tensorflow/tfjs:2:480876)
at h (https://cdn.jsdelivr.net/npm/@tensorflow/tfjs:2:42226)
at https://cdn.jsdelivr.net/npm/@tensorflow/tfjs:2:42907
at t.scopedRun (https://cdn.jsdelivr.net/npm/@tensorflow/tfjs:2:40845)
at t.runKernelFunc (https://cdn.jsdelivr.net/npm/@tensorflow/tfjs:2:42726)
at t.runKernel (https://cdn.jsdelivr.net/npm/@tensorflow/tfjs:2:41280)

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以下是在firefox中打开html文件时的错误

'''
SecurityError: The operation is insecure.
Source map error: Error: request failed with status 404
Resource URL: https://cdn.jsdelivr.net/npm/@tensorflow/tfjs
Source Map URL: tf.min.js.map 
'''

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我是初学者，无法理解上述错误。我试图从浏览器中的控制台获取姿势坐标，但我一直收到此错误。

任何帮助将不胜感激，并提前致谢。

Answer 1

edk*_*ked 12

crossorigin='anonymous' 需要添加到图像标签

<html>

<head>
  <meta charset="UTF-8">
  <!-- Load TensorFlow.js -->
  <script src="https://cdn.jsdelivr.net/npm/@tensorflow/tfjs"></script>
  <!-- Load Posenet -->
  <script src="https://cdn.jsdelivr.net/npm/@tensorflow-models/posenet"></script>
</head>

<body>
  <img id='cat' src='https://i.imgur.com/jlFgGpe.jpg' crossorigin='anonymous' />
</body>
<!-- Place your code in the script tag below. You can also use an external .js file -->
<script>
  var flipHorizontal = false;

  var imageElement = document.getElementById('cat');

  posenet.load().then(function(net) {
    const pose = net.estimateSinglePose(imageElement, {
      flipHorizontal: true
    });
    return pose;
  }).then(function(pose) {
    console.log(pose);
  })
</script>

</html>

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要在本地使用图像，图像需要由允许 cors 的服务器提供服务。http-server 可以与命令行一起使用

http-server -c1 --cors .

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http-server -c1 --cors .

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