| 基于FPGA的LED光源DLP背投电视对比度增强算法的研究 |
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| 引用本文： | 童燕, 邱崧, 王蔚生,.基于FPGA的LED光源DLP背投电视对比度增强算法的研究[J].电子器件,2008,31(4). |
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| 作者姓名： | 童燕 邱崧 王蔚生 |
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| 作者单位： | 华东师范大学信息学院电子系,上海,200062;华东师范大学信息学院电子系,上海,200062;华东师范大学信息学院电子系,上海,200062 |
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| 摘 要： | LED做光源的DLP背投电视越来越受到关注,LED光源有许多的优点,但在对比度方面有一定的局限性.通过详细分析LED光源DLP背投电视对比度的影响因素,提出了一种基于FPGA的LED光源对比度增强算法,即根据一帧图像最大灰度值所属范围的不同,分级线性放大灰度值系数,同时线性减小驱动电流放大系数,以达到全白屏幕与全黑屏幕对比度增强的效果.不同灰度值图像的处理效果不同,理论上,理想图像的对比度最多可提高四倍.
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| 关 键 词： | 图像处理 对比度增强 线性处理 灰度值 LED FPGA Verilog HDL |
Research on Contrast Enhancement Algorithm of LED Light Source for DLP RPTV Based on FPGA |
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| TONG Yan,QIU Song,WANG Wei-sheng.Research on Contrast Enhancement Algorithm of LED Light Source for DLP RPTV Based on FPGA[J].Journal of Electron Devices,2008,31(4). |
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| Authors: | TONG Yan QIU Song WANG Wei-sheng |
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| Affiliation: | TONG Yan,QIU Song,WANG Wei-sheng(The School of Information Science & Technology,East China Normal University,Shanghai 200062,China) |
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| Abstract: | DLP RPTV based on LED light source is popular now.LED light source has a lot of advantages,but it also has the limitations,such as in the contrast.By analyzing the factors that affect the contrast of LED light source for DLP RPTV,we raised a kind of contrast enhancement algorithm of LED light source for DLP RPTV based on FPGA.That is linearly changing the coefficients of the grey level and the driving current according to the maximum grey level of a frame,to achieve the contrast enhancement between the blac... |
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| Keywords: | LED FPGA Verilog HDL |
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