Java (-215:Assertion failed) mv[i].size == mv[0].size && mv[i].depth() == depth in function 'cv::merge'

asked 2020-01-06 09:37:59 -0500

Gourav gravatar image

While implementing deblur tutorial in java I got the following error

Exception in thread "main" CvException [org.opencv.core.CvException: cv::Exception: OpenCV(4.2.0) C:\build\master_winpack-bindings-win64-vc14-static\opencv\modules\core\src\merge.dispatch.cpp:129: error: (-215:Assertion failed) mv[i].size == mv[0].size && mv[i].depth() == depth in function 'cv::merge'
    at org.opencv.core.Core.merge_0(Native Method)
    at org.opencv.core.Core.merge(
    at DeblurFilter.calcWnrFilter(
    at OutOfFocusDeblurFilter.main(

This is the code that I have written

import org.opencv.core.*;
import org.opencv.highgui.HighGui;
import org.opencv.imgcodecs.Imgcodecs;
import org.opencv.imgproc.Imgproc;
import java.util.ArrayList;
import java.util.List;

class DeblurFilter{
    public void run(String[] args){
        String strInFileName = "../data/lena.jpg";
        int snr = 5200;
        int R = 53;
        Mat imgIn = new Mat();
        imgIn = Imgcodecs.imread(strInFileName);
            System.out.println("ERROR : Image cannot be loaded..!!");
        Mat imgOut = new Mat();
        Rect roi = new Rect(0,0,imgIn.cols()&-2,imgIn.rows()&-2);

        Mat Hw = new Mat(), h = new Mat();
        calcPSF(h, roi.size(), R);
        calcWnrFilter(h, Hw, 1.0/snr);
        filter2DFreq(new Mat(imgIn, roi), imgOut, Hw);
        imgOut.convertTo(imgOut, CvType.CV_8U);
        Core.normalize(imgOut, imgOut, 0, 255,Core.NORM_MINMAX);


    void calcPSF(Mat outputImg, Size filterSize, int R){
        Mat h = new Mat(filterSize, CvType.CV_32F, new Scalar(0));
        Point point = new Point(filterSize.width / 2, filterSize.height / 2);, point, R, new Scalar(255), -1, 8);
        Scalar summa = Core.sumElems(h);
        Core.divide(h, summa, outputImg);


    void fftshift( Mat inputImg, Mat outputImg){
        outputImg = inputImg.clone();
        int cx = outputImg.cols() / 2;
        int cy = outputImg.rows() / 2;
        Mat q0 = new Mat(outputImg, new Rect(0, 0, cx, cy));
        Mat q1 = new Mat(outputImg, new Rect(cx, 0, cx, cy));
        Mat q2 = new Mat(outputImg, new Rect(0, cy, cx, cy));
        Mat q3 = new Mat(outputImg, new Rect(cx, cy, cx, cy));

        Mat tmp = new Mat();

    void filter2DFreq(Mat inputImg, Mat outputImg,  Mat H){

        List<Mat> planes = new ArrayList<Mat>();
        inputImg.convertTo(inputImg, CvType.CV_32F);
        planes.add(Mat.zeros(inputImg.size(), CvType.CV_32F));
        Mat complexI = new Mat();
        Core.merge(planes, complexI);
        Core.dft(complexI, complexI, Core.DFT_SCALE);
       // System.out.println(planes.size());

        List<Mat>planesH = new ArrayList<Mat>();
        H.convertTo(H, CvType.CV_32F);
        planesH.add(Mat.zeros(H.size(), CvType.CV_32F));
        Mat complexH = new Mat(), complexIH = new Mat();
        Core.merge(planesH, complexH);
        Core.mulSpectrums(complexI, complexH, complexIH, 0);

        Core.idft(complexIH, complexIH);
        Core.split(complexIH, planes);
        outputImg = planes.get(0);


    void calcWnrFilter( Mat input_h_PSF, Mat output_G, double nsr){
        Mat h_PSF_shifted = new Mat();
        fftshift(input_h_PSF, h_PSF_shifted);
        ArrayList<Mat>planes = new ArrayList<Mat>();
        h_PSF_shifted.convertTo(h_PSF_shifted, CvType.CV_32F);
        planes.add( Mat.zeros(h_PSF_shifted.size(), CvType.CV_32F));
        Mat complexI ...
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Solve it? I also did, I also want to know how to solve

forestjj gravatar imageforestjj ( 2020-06-29 03:49:51 -0500 )edit