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AR# 55897

LogiCORE IP Video Scaler v7.01.a - Why does the output of the scaler wrap when the aperture includes the last pixel of the input frame?


When doing cropping with the Video Scaler, I am experiencing a wrapping behavior as described below.

  • Input frame size is 320x240
  • Output frame size is 160x120
  • Aperture start pixel is 160
  • Aperture end pixel is 319 (note that pixel number goes from 0 to frame_size-1, thus I am including the very last pixel of the line)


The following images show what is being experienced with the wrapping behavior.

This is the input image:

This is the expected output image:

This is the actual output image:


This is a known issue that affects the Video Scaler v7.01.a.

This issue is fixed in the Video Scaler v7.01.a Rev1 or later pcore patch and in Video Scaler v8.1 or later.
The Video Scaler v7.01.a Rev1 patch can be obtained from (Xilinx Answer 55898).

For a detailed list of LogiCORE IP Video Scaler Release Notes and Known Issues, see (Xilinx Answer 31958).

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AR# 55897
Date Created 05/07/2013
Last Updated 08/13/2013
Status Active
Type General Article
  • ISE
  • ISE Design Suite
  • ISE Design Suite - 14
  • More
  • ISE Design Suite - 14.3
  • ISE Design Suite - 14.4
  • Less
  • Video Scaler