在Jupyter Notebook中使用摄像头捕捉图像

Question

我正在尝试使用摄像头捕捉图像，这些图像将用于通过神经网络预测年龄和性别。

from IPython.display import display, Javascript, HTML
import base64
# HTML template for capturing image from webcam
html_template = """
<!DOCTYPE html>
<html>
<head>
<title>Webcam Image Capture</title>
</head>
<body>

<div id="container">
    <video id="video" style="display:block; width:100%;" autoplay></video>
    <button id="captureButton">Capture</button>
</div>

<script>
    var video = document.querySelector("#video");
    var captureButton = document.querySelector("#captureButton");

    // Access the webcam
    navigator.mediaDevices.getUserMedia({ video: true })
    .then(function(stream) {
        video.srcObject = stream;
    })
    .catch(function(error) {
        console.log("Error accessing the webcam: " + error.message);
    });

    // Capture image
    captureButton.onclick = function() {
        var canvas = document.createElement('canvas');
        canvas.width = video.videoWidth;
        canvas.height = video.videoHeight;
        var context = canvas.getContext('2d');
        context.drawImage(video, 0, 0, canvas.width, canvas.height);
        var dataURL = canvas.toDataURL('image/jpeg');
        var imageData = dataURL.replace(/^data:image\/(png|jpeg);base64,/, "");
        // Send captured image data back to Python
        IPython.notebook.kernel.execute("image_data = '" + imageData + "'");
    };

</script>

</body>
</html>
"""

# Display the HTML template
display(HTML(html_template))

# Wait for image data to be captured
image_data = None
while image_data is None:
    pass

# Decode image data and save it to file
image_binary = base64.b64decode(image_data)
filename = 'my_photo.jpg'
with open(filename, 'wb') as f:
    f.write(image_binary)

# Display the captured image
display(Image(filename))

这是我的代码，但在控制台中出现了这个错误：

VM1495:24 未捕获的引用错误：IPython未定义在captureButton.onclick (:24:9)

通常，Ipython会和jupyter一起自动安装，而我实际上是从Ipython导入了以下内容：

from IPython.display import display, Javascript

jupyter notebook 神经网络摄像头图像捕捉年龄预测性别识别 ipython错误

在Jupyter Notebook中使用摄像头捕捉图像

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