Javacv: Array should be CvMat or IplImage in function 'cvGetSize'

[kundanSingh11]

Exception in thread "main" java.lang.RuntimeException: OpenCV(4.0.1) C:\projects\javacpp-presets\opencv\cppbuild\windows-x86_64\opencv-4.0.1\modules\core\src\array.cpp:1246: error: (-5:Bad argument) Array should be CvMat or IplImage in function 'cvGetSize'

[saudet]

Just do what it says, pass a CvMat or an IplImage.

[kundanSingh11]

Sorry to say but i am doing just that and don't act like an smart ass cuz you are not bitch.

[saudet]

Ok, that's fine, please show your code. I can't guess what you're doing or not!

[kundanSingh11]

Getting error on this line :
IplImage destImage = downScaleImage(src, percent);
IplImage grayImage = IplImage.create(cvGetSize(destImage), IPL_DEPTH_8U, 1);

[saudet]

And what's in downScaleImage()?

[kundanSingh11]

private IplImage downScaleImage(IplImage src, int percent) {
    IplImage destImage = IplImage.create((src.width() * percent) / 100, (src.height() * percent) / 100, src.depth(),src.nChannels());
        cvResize(src, destImage);
        System.out.println("dest height " + destImage.height() + " dest witdth " + destImage.width());
        return destImage;
    }

[saudet]

And what is src? This works just fine:

IplImage img = IplImage.create(200, 200, IPL_DEPTH_8U, 3);
downScaleImage(img, 50);

As expected, it outputs:

dest height 100 dest witdth 100

I can't fix what isn't broken! You'll need to give me something to work with here.

[kundanSingh11]

I have found a other way and its working good instead of using cvGetSize() i am using destImage.asCvMat().cvSize() and its working great. BTW great library.

[970265]

Hi kundanSingh11,

I have the same issue of "Array should be CvMat or IplImage in function 'cvGetSize'."
Can you let me know your solution?
Appreciated your kind support.

Yuan-Fa, Lee

[yuanzhuohao]

I have the same issue

[saudet]

I'm not able to reproduce this issue with JavaCV 1.5.2 and OpenCV 4.1.2, so it looks like this is fixed.

[saudet]

If this is still happening for you guys though, please complain upstream at https://github.com/opencv/opencv/issues/6221.

[kundanSingh11]

@jessyuan24 , @970265 I am using it as
IplImage grayImage = IplImage.create(image.asCvMat().cvSize(), IPL_DEPTH_8U, 1);

[saudet]

BTW, this has now been fixed with OpenCV 4.2.0, see issue https://github.com/opencv/opencv/issues/15990