| 基于FPGA的视频直方图均衡化的改进设计 |
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| 引用本文： | 元海文,王建波,肖长诗. 基于FPGA的视频直方图均衡化的改进设计[J]. 传感器与微系统, 2013, 0(11): 115-117 |
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| 作者姓名： | 元海文 王建波 肖长诗 |
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| 作者单位： | [1]武汉大学物理科学与技术学院电子显微镜中心和人工微结构教育部重点实验室,湖北武汉430072 [2]武汉理工大学航运学院内河航运技术湖北省重点实验室,湖北武汉430072 |
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| 基金项目： | 国家“973”计划资助项目（2011CB933300）;国家自然科学基金资助项目（51071110,40972044,51271134,J1210061）;教育部新世纪优秀人才支持计划资助项目（NCET--07--0640）;教育部博士点基金资助项目（20090141110059）;中央高校基本科研业务费专项基金资助项目 |
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| 摘 要： | 介绍一种改进的直方图均衡算法及其在FPGA上的实现。与传统算法有区别的是如何统计直方图，通常均衡算法是只对亮度分量进行直方图均衡，或者对RGB三色色彩分量分别进行独立的均衡；提出的改进算法对输入像素的RGB分量同时进行统计，合成到一个统一的直方图对RGB通道进行均衡处理。实验结果证明：此算法不仅提高了图像对比度，同时也减轻了偏色或者褪色现象。
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| 关 键 词： | 视频处理 直方图均衡 现场可编程门阵列 偏色 |
Improved design on video histogram equalization based on FPGA |
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| YUAN Hai-wen,WANG Jian-bo,XIAO Chang-shi. Improved design on video histogram equalization based on FPGA[J]. Transducer and Microsystem Technology, 2013, 0(11): 115-117 |
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| Authors: | YUAN Hai-wen WANG Jian-bo XIAO Chang-shi |
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| Affiliation: | 1. Center for Electron Microscopy and MOE Key Laboratory of Artificial Micro and Nano structures, School of Physics and Technology, Wuhan University, Wuhan 430072, China; 2. Inland Shipping Technology Key Laboratory of Hubei Province, School of Shipping, Wuhan University of Technology, Wuhan 430072, China) |
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| Abstract: | Introduces an improved version of histogram equalization algorithm and its hardware implementation in FPGA. The key difference is how we count the statistics： usually, histogram equalization （HE） is only for luminance component or three color components （RGB） independently; the improved algorithm counts RGB components of input pixels simultaneously to build an unified histogram and then begin equalization. Experimental results show that this algorithm not only improves image contrast degree but also reduce phenomenon of partial color, |
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| Keywords: | video processing histogram equalization（ HE） FPGA partial colour |
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