Error in cvtColor

[beeing]

Hi, just wondering is this is a bug or something on my code.

Running the below code will throw exception below:

TypeError [ERR_INVALID_ARG_TYPE]: The first argument must be of type string or an instance of Buffer, ArrayBuffer, or Array or an Array-like Object. Received null

    let jimpSrc = await Jimp.read(__dirname + '/image.jpg');
    let src = cv.matFromImageData(jimpSrc.bitmap);
    let dst = new cv.Mat()
    cv.cvtColor(src, dst, cv.COLOR_BGR2GRAY)

However, calling dilate as per your example works fine. Perhaps something that I missed?

Thanks in advance.

[echamudi]

Hey, can you console.log the arguments of cv.cvtColor to make sure they are the correct input?

[beeing]

Thanks @echamudi for the response.

I've tried it earlier before creating the issue, anyway here it goes.

the src.rows and src.cols = 1500 x 1500, src.type() = 24

both the src and dest is Mat {} Mat {}

[razr001]

@beeing I have the same problem, How do you fix it?

[beeing]

Found out the problem was due to Jimp.

For some reason switching to node canvas for loading the bitmap solves the problem - means there's some differences between using Jimp or canvas to load the image.