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AR# 52886

Real Time Video Engine v1.0 - Why does the color and frequency response for the RTVE v1.0 or v1.5 vary slightly from the input?

Description

Why does the color and frequency response for the RTVE v1.0 or v1.5 vary slightly from the input?

Solution

This is due to limitations in the older versions of the Chroma Resampler and the Color Space Converter (RGB to YCrCb Converter, YCrCb to RGB Converter) cores that were used in the Real Time Video Engine v1.0 and v1.5.

There are no plans to update the RTVE v1.0 or v1.5 to use these newer cores, as the Video interface on these cores now uses the AXI4-Stream Video Protocol, while the older cores used the deprecated XSVI interface. 

A newer version of the RTVE will be updated to use the AXI4-Stream Video Protocol.

The LogiCORE IP Chroma Resampler v2.00.a added support for up to 24 taps, allow it to meet the ITU-R BT.601-4 standard.

The LogiCORE IP RGB to YCrCb v5.00.a added support for independent Chroma offsets, which gives the ability to adjust the Cr and Cb color corrections independently.

The LogiCORE IP YCrCb to RGB v5.00.a added support for independent Chroma offsets, which gives the ability to adjust the Cr and Cb color corrections independently.

Please see (Xilinx Answer 44487) for a detailed list of LogiCORE IP Chroma Resampler Release Notes and Known Issues.
Please see (Xilinx Answer 29982) for a detailed list of LogiCORE RGB to YCrCb Color-Space Converter Release Notes and Known Issues.
Please see (Xilinx Answer 29980) for a detailed list of LogiCORE YCrCb to RGB Color-Space Converter Release Notes and Known Issues.

Linked Answer Records

Master Answer Records

AR# 52886
Date Created 11/12/2012
Last Updated 12/03/2014
Status Active
Type General Article
IP
  • Chroma Resampler
  • RGB to YCrCb Color Converter
  • YCrCB to RGB Color-space Converter