| 基于灰度冗余的红外图像实时均衡技术 |
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| 引用本文： | 李怀琼,陈钱,隋修宝,刘强.基于灰度冗余的红外图像实时均衡技术[J].激光与红外,2006,36(5):409-412. |
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| 作者姓名： | 李怀琼 陈钱 隋修宝 刘强 |
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| 作者单位： | 南京理工大学电光学院441教研室,江苏,南京,210094;南京理工大学电光学院441教研室,江苏,南京,210094;南京理工大学电光学院441教研室,江苏,南京,210094;南京理工大学电光学院441教研室,江苏,南京,210094 |
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| 摘 要： | 文章提出一种新型的基于灰度冗余的红外图像实时均衡算法,通过图像灰度直方图的统计,将灰度像素分布为零的灰度级进行完全压缩,将灰度分布很少的灰度级映射到最近的大于阈值的灰度级,然后将有效图像灰度级进行等间距排列,最后完成排列后的直方图映射.该算法在压缩灰度冗余的同时,进行直方图的实时无损均衡,提高了图像质量,并实现实时处理,避免了常规直方图均衡带来的灰度断层现象.该算法在红外热像仪的应用中取得了较好效果.
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| 关 键 词： | 直方图均衡 图像增强 灰度冗余 实时处理 红外图像 |
| 文章编号： | 1001-5078（2006）05-0409-04 |
| 收稿时间： | 2005-09-16 |
| 修稿时间： | 2005-09-16 |
Infrared Image Real-time Equalization Algorithm Based on Gray-level Redundancy |
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| LI Huai-qiong,CHEN Qian,SUI Xiu-bao,LIU Qiang.Infrared Image Real-time Equalization Algorithm Based on Gray-level Redundancy[J].Laser & Infrared,2006,36(5):409-412. |
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| Authors: | LI Huai-qiong CHEN Qian SUI Xiu-bao LIU Qiang |
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| Abstract: | Based on gray-level redundancy, a new real-time equalization algorithm for infrared image enhancing is proposed. The gray levels which occupied no pixel were compressed completely through statistic of image gray histogram. The gray levels which occupied few pixelswere mapped to the nearest gray level. Then, the gray-levels are arranged in equal distance. Thegray-level redundancy is compressed through this algorithm, at the same time real-timeequalization with no losing is performed. This approach overcomes the drawback of gray-leveltruncation in histogram equalization. Application in infrared imaging system shows good result. |
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| Keywords: | histogram equalization image enhancement gray redundance real-time processing infrared image |
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