Chief Delphi - Convex Hull using JavaCV or WPIjavaCv

how would I convex hull a binary image with either JavaCV or WPIJavaCV?

Currently i am using:

Code:

    public static WPIContour[] findConvexContours(WPIBinaryImage image)

    {

        image.validateDisposed();



        IplImage tempImage = IplImage.create(image.image.cvSize(), image.image.depth(), 1);



        opencv_core.cvCopy(image.image, tempImage);



        CvSeq contours = new CvSeq();

        opencv_imgproc.cvFindContours(tempImage, storage, contours, 256, opencv_imgproc.CV_RETR_LIST, opencv_imgproc.CV_CHAIN_APPROX_TC89_KCOS);

        ArrayList<WPIContour> results = new ArrayList();

        while (!WPIDisposable.isNull(contours)) {

            CvSeq convexContour = opencv_imgproc.cvConvexHull2(contours, storage, opencv_imgproc.CV_CLOCKWISE, 1);

            WPIContour contour = new WPIContour(opencv_core.cvCloneSeq(convexContour, storage));

            results.add(contour);

            contours = contours.h_next();

            

            

        }



        tempImage.release();

        WPIContour[] array = new WPIContour[results.size()];

        return results.toArray(array);

    }

but it crashes the app when it runs.

Thanks,
Dimitri