Re: [OpenCV4Android] OpenCV on Android findContours throws Exception

[nedaa fadhel]

Dear Heman,

 i am trying to learn image processing in andriod emulator for my project,can you help me how to read a image and use edge detection on it , i really appricate your help .

thanks a lot.

best regards,

nedaa

On Thu, Sep 20, 2012 at 1:12 PM, Heman <m.sc.chris...@googlemail.com> wrote:

I use OpenCV 2.4.0 on Android and try to find contours in a binary imgage. List<MatOfPoint> contours = new ArrayList<MatOfPoint>(); Mat mIntermediateMat = new Mat(); Imgproc.Canny(img, mIntermediateMat, 50, 100); Imgproc.findContours(mIntermediateMat, contours, new Mat(), Imgproc.RETR_LIST, Imgproc.CHAIN_APPROX_SIMPLE); But the function throws a "Unrecognized or unsupported array type in function CvMat..." exception. Also i try this Mat as input: Mat mIntermediateMat = new Mat(height, width, CvType.CV_8UC1, new Scalar(0)); But i get the same exception.

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