Boumding Box vitis vision for streaming

[kouroshkarimi]

Hi

Im working on bounding box vitis vision ip core but it dont work with streaming and i dont know how to change it to work. my code in vitis_hls is here. Can some one help?

[Niță Eduard]

Hello @kouroshkarimi,
You will also need another Mat (which is actually a FIFO) to act as a consumer, in order for dataflow to work.
If I recall correctly, the bounding box function is not made for streaming applications. As such, you will need to modify it/write a new function to achieve what you are trying to do.  A pseudocode of such a function would look like similar to this (this only uses 1 roi). 

new_boundingbox(src_mat, dst_mat, roi, color) {
  for(i = 0; i < rows; i++) {
     	for(j = 0; j < cols; j++) {
            // read pixel from src mat
            src_pixel = src_mat.read(i * rows + j)
            // check that pixel is located on the rectangle described by x0,y0,x1,y1
            if (is_on_rectangle(src_pixel, roi) {
              // color it
              dst_pixel = color
            } else {
              // keep original pixel
              dst_pixel = src_pixel
            }
            // write data to dst mat
            dst_mat.write(dst_pixel, i * rows+ j)
        }
    }
}

Edited August 22, 2022 by Niță Eduard
format

[kouroshkarimi]

On 8/22/2022 at 2:45 AM, Niță Eduard said:

Hello @kouroshkarimi,
You will also need another Mat (which is actually a FIFO) to act as a consumer, in order for dataflow to work.
If I recall correctly, the bounding box function is not made for streaming applications. As such, you will need to modify it/write a new function to achieve what you are trying to do.  A pseudocode of such a function would look like similar to this (this only uses 1 roi). 

new_boundingbox(src_mat, dst_mat, roi, color) {
  for(i = 0; i < rows; i++) {
     	for(j = 0; j < cols; j++) {
            // read pixel from src mat
            src_pixel = src_mat.read(i * rows + j)
            // check that pixel is located on the rectangle described by x0,y0,x1,y1
            if (is_on_rectangle(src_pixel, roi) {
              // color it
              dst_pixel = color
            } else {
              // keep original pixel
              dst_pixel = src_pixel
            }
            // write data to dst mat
            dst_mat.write(dst_pixel, i * rows+ j)
        }
    }
}

thanks it worked.