quickbirdeng / yuvtomat Goto Github PK

The toMat throws this:
java.lang.UnsatisfiedLinkError: No implementation found for long org.opencv.core.Mat.n_Mat(int, int, int, java.nio.ByteBuffer) (tried Java_org_opencv_core_Mat_n_1Mat and Java_org_opencv_core_Mat_n_1Mat__IIILjava_nio_ByteBuffer_2).
The Image given to the function is an ArImage from google's ARCore.
Any ideas why it happens and how to fix it?
Thank you!

The problem happens when set the resolution to 2160x1080.

Thanks for this awesome project (and of course the OpenCV package for gradle)! This really saved me so much trouble. I can convert my images to Mats, but when I try to use the clipping, then for

val yuv = YuvImage(image).clip(left=20, top=20, right=40, bottom=40)

I get a compile error saying

Expression 'YuvImage' of type 'YuvImage.Factory' cannot be invoked as a function. The function 'invoke()' is not found

My versions:

ext.kotlin_version = '1.3.50'
implementation "com.quickbirdstudios:yuvtomat:1.1.0"
implementation 'com.quickbirdstudios:opencv:4.1.0'

Do you have an idea what happens there?

Yuv format is not supported: Yuv(resource=androidx.camera.core.SettableImageProxy@f251aa8, width=864, height=480, y=Plane(buffer=java.nio.DirectByteBuffer[pos=0 lim=430048 cap=430048], pixelStride=1, rowStride=896), u=Plane(buffer=java.nio.DirectByteBuffer[pos=0 lim=215007 cap=215007], pixelStride=2, rowStride=896), v=Plane(buffer=java.nio.DirectByteBuffer[pos=0 lim=215007 cap=215007], pixelStride=2, rowStride=896))

Hello, can you suggest what is the possible cause for this error?
I noticed strange values width = 864 but rowStride = 896, may be this is the reason.

Sony Xperia XZ3 Black (H9436)

CameraX api has ImageProxy class which you obtain from ImageAnalyzer. It has the same api as usual Image. So adding support is just duplicating several constructors. And I would create pull request, but…
The difficult part, I think, this feature should be in separate package. If someone don't use CameraX in his/her project won't have to download it.

Hi,

Can you add "Yuv.bgr" method ?

Because Opencv in android is BGR.

Thank's

private void saveQuickBird(Image newImage, int rotation)
    {
        final Image image = newImage;

        Mat rgbMat = Yuv.rgb(image);// getting a rgb mat!
        Mat bgrMat = new Mat();

        Imgproc.cvtColor(rgbMat, bgrMat, Imgproc.COLOR_RGB2BGR);// Without this line the image is weird.

        // Do some work..

        // Now Save !

        org.opencv.imgcodecs.Imgcodecs.imwrite(_path, bgrRotated);
        
    }