java - Distance transform in OpenCV output error -

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i'm using android binaries , first time i'm performing distance transform in opencv. opencv specification says output image of distancetransform 32-bit floating-point, single-channel image. mat (mdist), on creating bitmap out of mat throws illegalstateexception. due incompatibility of output , mat object? have specify color channel details mat or anything? following code portion.

enter image description here

        mat mimg = new mat();         mat mthresh = new mat();         mat mdist = new mat();          imageview imgview = (imageview) findviewbyid(r.id.imageview);         bitmap bmpin = bitmapfactory.decoderesource(getresources(),                 r.drawable.w1);             utils.bitmaptomat(bmpin, mimg); //load image mat          imgproc.cvtcolor(mimg, mimg, imgproc.color_bgr2gray);             imgproc.threshold(mimg, mthresh, 0, 255, imgproc.thresh_binary                 | imgproc.thresh_otsu); //grayscale , thresholding                  imgproc.distancetransform(mthresh, mdist, imgproc.cv_dist_l2, imgproc.cv_dist_mask_precise);          bitmap bmpout = bitmap.createbitmap(mdist.cols(), mdist.rows(),                 bitmap.config.argb_8888);             utils.mattobitmap(mdist, bmpout); //error in creating bitmap         imgview.setimagebitmap(bmpout);

the fault in following line of code;

bitmap bmpout = bitmap.createbitmap(mdist.cols(), mdist.rows(),                 bitmap.config.argb_8888);

the bitmap.config should applied not argb_8888. function creates 8-bit single channel mat.


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