while (capture.read(frame)) {
    double shift = index++ % repeat * offset;
    int left = view.width() - width - (int) shift;
    Rect rect = new Rect(left, 0, width, height);
    Mat roi = view.submat(rect);
    frame.copyTo(roi);
    Mat logo = maskLogo.submat(rect), mosaic = maskMosaic.submat(rect);
    for (Map.Entry<Integer, Rect> entry : wrapperLogo.entrySet()) {
        Rect wrapper = maskService.wrapper(rect, entry.getValue());
        if (null == wrapper) continue;
        Imgproc.rectangle(frame, wrapper, new Scalar(0, 255, 0));
        Mat mat = frame.submat(wrapper), image = mat.clone();
        Core.absdiff(image, sa, image);
        Core.divide(image, sb, image);
        image.copyTo(mat, logo.submat(wrapper));
        watermarkService.detach(frame.submat(wrapper), logo.submat(wrapper), null);
    }
    writer.write(frame);
    gui.imshow(cvService.bufferedImage(frame));
    gui.repaint();
}