基于LCH视觉频率响应特性的图像编码研究  

Study on Image Coding Based on Response Characteristic of Visual Frequency in LCH Color Space

作　　者：欧阳玉洁[1,2] 金杨[1] 赵汉青[1] 

机构地区：[1]北京印刷学院印刷与包装工程学院,北京102600 [2]中国印刷科学技术研究所包装印刷新技术北京市重点实验室,北京100036

出　　处：《中国印刷与包装研究》2014年第5期32-36,43,共6页China Printing Materials Market

摘　　要：对比敏感度函数(CSF)是表征人眼视觉频率响应的重要方法之一。本研究以LCH颜色空间为基础,结合大量实验构建出的CSF模型曲线,生成基于多种中心色调角的明度、彩度和色调角滤波器,根据阈值限定,对图像进行对应的滤波压缩处理,并编制出用于图像处理的C语言程序。根据处理后得到的图像,将基于LCH-CSF模型的图像与主流JPEG压缩图像进行对比评价,为图像压缩方法的研究提供了新的思路,同时也验证了LCH颜色空间下所构建的CSF模型曲线与人眼视觉频率响应的契合程度。Contrast Sensitivity Function （CSF） is one of the most important parameters to characterize the response of human visual frequency. In this study, based on a large number of experiments, CSF model curves were constructed in the LCH color space and 19 kinds of filter of lightness, chroma, and hue angle were generated based on a variety of center-based hue angles. Combined with the threshold limit, the image were filtered and compressed with corresponding filters. Then the C program was compiled for image processing. According to the obtained images, the images were compared which were com- pressed based on LCH-CSF model and JPEG method. It provides a new way to study the image compression method and also verified that the CSF model curve in LCH color space can match the response of the human visual frequency well.

关 键 词：图像压缩 人眼视觉频率响应 对比敏感度函数 LCH颜色空间 

分 类 号：TS801.9[轻工技术与工程]