我正在从摄像头中抓取帧，将每个图像位图转换为base64字符串，然后将其传递给Google视觉API。当我这样做时，我遇到了一个错误，但它只记录为true。我是新来的人，正在努力寻找我所缺少的东西。
agent has finished training在控制台中，我只能看到 grabFrame() {
let mediaStreamTrack = this.state.mediaStream.getVideoTracks()[0];
let imageCapture = new window.ImageCapture(mediaStreamTrack);
return imageCapture.grabFrame();
}
uploadFrame() {
this.grabFrame()
.then(function(bitmapImage) {
var canvas = document.createElement("canvas")
canvas.width = bitmapImage.width;
canvas.height = bitmapImage.height;
let context = canvas.getContext("2d")
context.drawImage(bitmapImage, 0, 0);
let base64Image = canvas.toDataURL("image/png")
const request = new vision.Request({
image: new vision.Image({
base64: base64Image,
}),
features: [ new vision.Feature('FACE_DETECTION') ]
})
vision.annotate(request)
.then((response) => {
console.log(`Response: ${response}`)
})
.catch((error) => {
console.log(`Error: ${error}`) >>>> "Error: true"
});
}).catch((error) => {
console.log('grabFrame() error: ', error)
});
}
登录POST https://vision.googleapis.com/v1/images:annotate?key=xxxxxxxxxxxxxxxxxxx 400会得到base64Image
我想念什么吗？