Is there a way to convert opencv object (mat object) to blob in javascript?

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5

I used cv.blobFromImage to convert opencv Mat object directly to blob, no canvas needed.

const blob = cv.blobFromImage(
    image,  // cv.Mat
    1 / 128,  // scalefactor
    new cv.Size(inputWeight, inputHeight),  // size
    new cv.Scalar(inputMean, inputMean, inputMean),  // mean
    true  // swapRB
);

See OpenCV: Deep Neural Network module for API docs.