Opencv hls , how to use hls::Range()?

Question

Hello ,
      I have one problem.I use hls::Range() to set ROI(Region of interest).But, I cound not let it work correctly.Can anyone help me? Can you give me an example? Thanks !!!

Answer 1

Hi, I use the hls::Range() like it. #if 1 void image_filter(AXI_STREAM& INPUT_STREAM, AXI_STREAM& OUTPUT_STREAM, int rows, int cols) {
//Create AXI streaming interfaces for the core
#pragma HLS INTERFACE axis port=INPUT_STREAM
#pragma HLS INTERFACE axis port=OUTPUT_STREAM
#pragma HLS RESOURCE core=AXI_SLAVE variable=rows metadata="-bus_bundle CONTROL_BUS"
#pragma HLS RESOURCE core=AXI_SLAVE variable=cols metadata="-bus_bundle CONTROL_BUS"
#pragma HLS RESOURCE core=AXI_SLAVE variable=return metadata="-bus_bundle CONTROL_BUS"
#pragma HLS INTERFACE ap_stable port=rows
#pragma HLS INTERFACE ap_stable port=cols
RGB_IMAGE img_0(rows, cols);
RGB_IMAGE img_1(rows, cols);
RGB_IMAGE img_2(rows, cols);
RGB_IMAGE img_3(rows, cols);
RGB_IMAGE img_4(rows, cols);
RGB_IMAGE img_5(rows, cols);
RGB_IMAGE img_6(rows, cols);
RGB_IMAGE img_7(rows, cols);//typedef hls::Mat RGB_IMAGE;
RGB_PIXEL pix(50, 50, 50);// typedef hls::Scalar<3, unsigned char> RGB_PIXEL;
hls::Mat gray(rows,cols);//MAX_HEIGHT=480 MAX_WIDTH=640
hls::Mat range_1(rows,cols);
#pragma HLS dataflow
// hls::AXIvideo2Mat(INPUT_STREAM, img_0);
// hls::CvtColor(img_0,gray);
hls::AXIvideo2Mat(INPUT_STREAM, gray);
hls::Range(gray,range_1,0,50);//I use the hls::Range () like it ,is it right? Could you get me an example? //hls::Range(img_0,img_5,10,360);
//hls::Sobel<1,0,3>(img_0, img_1);
// hls::SubS(img_1, pix, img_2);
// hls::Scale(img_2, img_3, 2, 0);
// hls::Erode(img_3, img_4);
// hls::Dilate(img_4, img_5);
hls::CvtColor(range_1,img_1);
hls::Mat2AXIvideo(img_1, OUTPUT_STREAM);
#endif