基于FPGA的边缘淡化色键合成器的设计与实现

Design and realization of digital chroma key synthesizer with edge dilution based on FPGA

在数字演播室中,色键合成是一种常用的技术,它能从单色背景中抠出前景再叠加到丰富多彩的背景中,形成置身于不同环境的神奇效果,改善了电视节目的视觉效果。从色键抠像的基本原理入手,提出了边缘颜色消除技术,解决了传统色键合成器幕布色镶边的现象。进行了仿真和调试,最终实现了该器件,验证了此技术的可行性。

The technology of chroma key synthesis is a common TV skill in the processing of program production in digital studio,which can pull out foreground from a single color＇s background and then add it to some rich and varied backgrounds,form magic effects that make people exposure to the different environment.It really enriched the expression format and enhanced the visual effect of TV programs.The paper started with the basic theory of chroma key synthesis,presented the technology about elimination of the edge color components to solve the traditional chroma key synthesizer＇s phenomena,such as curtaincolor trim and edge mutation,it made the keying effects become vivid and real.Finally the paper designed and realized a digital chroma key synthesizer with edge dilute effects and carried out the software simulation and hardware debugging,proved the feasibility of this technology.