Opencv python到java代码转换

Question

我有一些代码要从python转换为java才能在我的Android应用程序中使用。

python代码是：

npaROIResized = imgROI.reshape((1, 600))      

其中imgROIResized是一个numpy.ndarray，表示我从图像中找到的轮廓。

我现在尝试的java代码是：

// points is MatOfPoint that I extracted from a contour
Rect rect = Imgproc.boundingRect(points);  

// matrixImage is the Mat input image
Mat imgROI = matrixImage.submat(rect);

imgROI.reshape(1, 600);

但我收到了错误：

OpenCV Error: Image step is wrong (The matrix is not continuous, 
thus its number of rows can not be changed) in 
cv::Mat cv::Mat::reshape(int, int) const, file