基于空间光学技术的彩色图像增强方法  

Color image enhancement method based on space optical technology

作　　者：王艳贞[1] 王晓芬[1] 胡海晓[1] WANG Yanzhen;WANG Xiaofen;HU Haixiao(Shijiazhuang Tiedao University,Shijiazhuang 050043,China)

机构地区：[1]石家庄铁道大学,石家庄050043

出　　处：《激光杂志》2022年第7期75-79,共5页Laser Journal

基　　金：河北省重点研发计划项目(No.19275801D)。

摘　　要：为提升彩色图像的清晰度和图像细节质量,最大程度显示图像信息,提出基于空间光学技术的彩色图像增强方法。将彩色图像转换至HIS颜色空间,采用色差度量法检测获取图像像素的边缘信息,并融合边缘强度信息,实现彩色图像边缘处理;采用加权最小二乘法优化的Retinex算法,增强边缘处理后的彩色图像,利用Gamma校正方法增强图像细节,获取最终的彩色增强图像。测试结果显示:该方法边缘强度结果均在0.92以上,能够有效提升彩色图像的边缘质量,并且增强后彩色图像的熵增强、平均梯度、细节对比度均高于0.93,可改善彩色图像的彩色质量、丰富图像中的信息,提升图像视觉效果。In order to improve the clarity and detail quality of color image and reflect the image information to the greatest extent,a color image enhancement method based on spatial optics technology is proposed.The color image is transformed into his color space,the edge information of image pixels is detected by color difference measurement method,and the edge intensity information is fused to realize the edge processing of color image;The Retinex algorithm optimized by the weighted least square method is used to enhance the color image after edge processing,and the gamma correction method is used to enhance the image details to obtain the final color enhanced image.The test results show that the edge intensity results of this method are above 0.92,which can effectively improve the edge quality of the color image,and the entropy enhancement,average gradient and detail contrast of the enhanced color image are higher than 0.93,which can improve the color quality of the color image,enrich the information in the image and improve the visual effect of the image.

关 键 词：空间光学技术 图像增强 边缘信息 分量边缘 色差度量 

分 类 号：TN249[电子电信—物理电子学]