基于色差空间的并行彩色插值算法及其FPGA实现  

PARALLEL COLOUR INTERPOLATION ALGORITHM BASED ON COLOUR DIFFERENCE SPACE AND ITS IMPLEMENTATION ON AN FPGA SYSTEM

作　　者：徐才[1] 鲍吉龙[1,2] 郑德春[2] 

机构地区：[1]华东理工大学信息科学与工程学院,上海200237 [2]宁波工程学院电子与信息工程学院,浙江宁波315016

出　　处：《计算机应用与软件》2009年第7期78-80,150,共4页Computer Applications and Software

基　　金：浙江省科技厅基金项目(2007R40G229003)

摘　　要：针对各种彩色插值算法存在的缺陷即算法的硬件可实现性和图像恢复后的质量之间的矛盾,提出了一种基于色差空间的并行彩色插值算法。该算法以5×5菱形领域内像素点的色差分量几乎相同为前提,利用当前像素的已知颜色分量和不同颜色分量之间的关联性插值得到未知的颜色分量。同时考虑到FPGA强大的并行处理能力,采用FPGA来实现该算法。MATLAB仿真和时序分析验证了算法的可靠性和高效性,使以较少的硬件资源达到较好的插值效果成为了可能。The work focuses on overcoming the conflict between the cost of hardware resource and the quality of the restored colour image that most conventional colour interpolation algorithms exist, a parallel colour interpolation algorithm based on colour difference space is presented in this regard. The algorithm has a premise that the colour differences among the pixels in a diamond field of 5 × 5 are almost the same,it uses the correlation interpolation between the known colour component of existing images and the different colour＇s component to obtain the unknown colour component. The algorithm can be realized by the powerful parallel computing ability of FPGA. MATLAB simulations verified the algorithm＇s validity and feasibility. Besides, the timing analysis shows that it is possible to have the excellent quality of restored colour image without costing much hardware resource.

关 键 词：彩色插值 色度空间 并行计算 现场可编程门阵列 实时 

分 类 号：TP312[自动化与计算机技术—计算机软件与理论] TP38[自动化与计算机技术—计算机科学与技术]