Fixed x & y coords less than 0

AlexeyAB

2017-03-17 71a9929af6c3d3ffb9527bb921c5cc4a20971ff6

 src/image.c

@@ -437,6 +437,28 @@
        cvReleaseImage(&buffer);
    }
    cvShowImage(buff, disp);

   {
      CvSize size;
      {
         size.width = disp->width, size.height = disp->height;
      }

      static CvVideoWriter* output_video = NULL;    // cv::VideoWriter output_video;
      if (output_video == NULL)
      {
         printf("\n SRC output_video = %p \n", output_video);
         const char* output_name = "test_dnn_out.avi";
         //output_video = cvCreateVideoWriter(output_name, CV_FOURCC('H', '2', '6', '4'), 25, size, 1);
         output_video = cvCreateVideoWriter(output_name, CV_FOURCC('D', 'I', 'V', 'X'), 25, size, 1);
         //output_video = cvCreateVideoWriter(output_name, CV_FOURCC('M', 'J', 'P', 'G'), 25, size, 1);
         printf("\n cvCreateVideoWriter, DST output_video = %p  \n", output_video);
      }

      cvWriteFrame(output_video, disp);
      printf("\n cvWriteFrame \n");
   }

    cvReleaseImage(&disp);
}
#endif