多频激光脉冲下超分辨率图像小特征增强方法  

Small feature enhancement method for super-resolution images under multi frequency laser pulses

作　　者：王玮 冯文果 费莉 WANG Wei;FENG Wenguo;FEI Li(College of Communication and Information Engineering,Chongqing College of Mobile Communication,Chongqing 401520,China)

机构地区：[1]重庆移通学院通信与信息工程学院,重庆401520

出　　处：《激光杂志》2025年第1期173-178,共6页Laser Journal

基　　金：重庆市教委科研项目(No.KJQN202102403)。

摘　　要：在成像过程中,针对多频激光脉冲散射会使得图像模糊并导致小特征不清晰的问题,提出多频激光脉冲下超分辨率图像小特征增强方法。采用最小加权二乘滤波,通过边缘保持的增强函数计算反射分量,完成超分辨率图像重建,并对其展开分块,计算图像中各个图像块的图像增强系数,利用块差异因子对相邻图像块合并。通过超分辨率图像块增强参数内插,获取各个像元的参数信息,进而对图像小特征增强。实验结果表明,所提方法应用下的PSNR值最高达到32.1 dB,颜色信息保留率在0.82到0.93之间,信息熵高达9.997,SSIM高达0.982,超分辨率图像小特征增强效果好。In the imaging process,aiming at the problem that the scattering of multi-frequency laser pulse will make the image fuzzy and lead to the ambiguity of small features,a small feature enhancement method under multi-frequency laser pulse is proposed.The super-resolution image is reconstructed by using the least weighted square filter,the reflection component is calculated by the enhancement function of edge preservation,and the image enhancement coefficients of each image block are calculated,and the adjacent image blocks are merged by block difference factor.The parameter information of each pixel is obtained through the interpolation of enhanced parameters of super-resolution image blocks,and then the small features of the image are enhanced.The experimental results show that the maximum PSNR value of the proposed method is 32.1 dB,the color information retention rate is 0.82 to 0.93,the information entropy is up to 9.997,the SSIM is up to 0.982,and the small features enhancement effect of super resolution images is good.

关 键 词：多频激光脉冲 超分辨率图像 小特征 增强 

分 类 号：TN209[电子电信—物理电子学]