05-17-2014 12:21 AM
I am trying to create a simple video processing system using the zedboard and the FMC Imageon card. I implemented the passthrough reference design "FMC-IMAGEON IP Cores and Tutorials for Vivado" from here and it is working. Then I created my own IP Block using Vivado HLS. The first version of my block was only a passthrough function. The function just got the input image and sent it to the ouput. I synthetized and exported the IP and integrated to the passthrough reference design using Vivado IP Integrator. I put it after the VideoIn-to-AXIStream and before the AXIStream-to-VideoOut. All this worked very well. I got the video from a camera using the FMC HDMI input port and got video out to a monitor. My problem is the following: Then I wanted to create a more complicated function in my HLS design so I used one of the video processing library functions, a sobel filter, and repeated the process again. I exported the IP block and add it in the middle of the passthrough example, however this DOESN'T WORK! My guess is that it has something to do with the clocks or the timing. Maybe the sobel filter is too slow or something like that. Do you have any idea what could be wrong? I don't get anything in the screen when using the sobel filter block. My HDMI input is 720p. I am using a clock of 150MHz to run my block but I also tried with 75Mhz and still. Attached is my block design. Any idea or suggestion. I don't know what is going on. I'll appreciate your quick response.
05-18-2014 09:16 PM
Did you check this XAPP which talks about sobel filter implementation in ZYNQ using HLS - http://www.xilinx.com/support/documentation/application_notes/xapp890-zynq-sobel-vivado-hls.pdf
05-20-2014 02:19 AM
02-05-2016 04:11 AM
Long time after the last response on this thread, but i'll give it a try.
Do you got it running? I stand in front of nearly the same problem.
I started building the FMC Imageon pipeline for VITA image sensor and later added VDMAs to send the image data over ethernet to host. That all works fine. Now i wanted to build image filter with HLS but even if i try to build a passthrough IP i just get a black screen. Can you maybe help me how i can get the project running?