Xilinx pg013 LogiCORE IP RGB to YCrCb Color-Space Converter v5 ...

Chapter 1OverviewA color space is a mathematical representation of a set of colors. The most popular colormodels are:• RGB or R'G'B', gamma corrected RGB, used in computer graphics• YIQ, YUV and YCrCb used in video systemsThese color spaces are directly related to the intuitive notions of hue, saturation andbrightness.All color spaces can be derived from the RGB information supplied by devices such ascameras and scanners. Different color spaces have historically evolved for differentapplications. In each case, a color space was chosen for application-specific reasons.The convergence of computers, the Internet and a wide variety of video devices, all usingdifferent color representations, is forcing the digital designer today to convert betweenthem. The objective is to have all inputs converted to a common color space beforealgorithms and processes are executed. Converters are useful for a number of markets,including image and video processing.Feature SummaryThe RGB to YCrCb Color-Space Converter core transforms RGB video data into YCrCb 4:4:4or YUV 4:4:4 video data. The core supports four common format conversions as well as acustom mode that allows for a user-defined transform. The core is capable of a maximumresolution of 7680 columns by 7680 rows with 8, 10, 12, or 16 bits per pixel and supports thebandwidth necessary for High-definition (1080p60) resolutions in all Xilinx FPGA devicefamilies. Higher resolutions can be supported in Xilinx high-performance device families.You can configure and instantiate the core from CORE Generator or EDK tools. Corefunctionality may be controlled dynamically with an optional AXI4-Lite interface.Applications• Post-processing core for image dataRGB to YCrCb Color-Space Converter www.xilinx.com 6PG013 April 24, 2012