编码曝光相机码字搜索智能优化算法  

Intelligent Optimization Algorithm for Codeword Searching for a Coded Exposure Camera

作　　者：周培培 严家奕 戚桓楠 孙涛 侯幸林 Zhou Peipei;Yan Jiayi;Qi Huannan;Sun Tao;Hou Xinglin(School of Electrical and Information Engineering,Changzhou Institute of Technology,Changzhou 213032,Jiangsu,China;School of Automotive Engineering,Changzhou Institute of Technology,Changzhou 213032,Jiangsu,China)

机构地区：[1]常州工学院电气信息工程学院,江苏常州213032 [2]常州工学院汽车工程学院,江苏常州213032

出　　处：《激光与光电子学进展》2024年第18期344-354,共11页Laser & Optoelectronics Progress

基　　金：国家自然科学基金项目(62101074);江苏省高校研究重大项目(23KJA510001)。

摘　　要：针对传统相机成像高频部分信息保留不充分、编码曝光码字求解不准确、运动模糊核估算难等问题,聚焦编码曝光相机码字搜索方法,提出一种基于Memetic算法框架的智能优化循环搜索策略。采用差分进化中的变异交叉算子得到全局解,再采用禁忌搜索对全局解进行局部排查,循环搜索获取最优码字序列。设计了一种适用于编码曝光图像复原的损失函数,采用端到端盲去卷积核的生成对抗网络,比较了不同码字获取方式对模糊图像复原的影响。实验结果表明:相比其他方法,所提智能优化算法能更准确地求解码字序列,鲁棒性更好;经同一网络进行运动模糊图像复原时,所提算法码字得到的复原结果在主客观方面均优于现有方法,在运动模糊复原领域具有较高的工程应用价值。Traditional camera imaging suffers from insufficient preservation of high-frequency information,inaccurate solution of encoding exposure codewords,and difficulty in estimating blur kernels.Toward solving these problems,this study focuses on a codeword searching method for coded exposure cameras and proposes an intelligent optimized cyclic search strategy based on a memetic algorithm framework.A mutation crossover operator is used in differential evolution to obtain a global solution;subsequently,a taboo search is performed to conduct a local search on the global solution,thereby iteratively searching to obtain an optimal codeword sequence.A loss function suitable for encoding exposure image restoration is designed,and an end-to-end blind deconvolution kernel generative adversarial network is used to compare the performances of different codeword acquisition methods for blurry image restoration.Experimental results show that the proposed intelligent optimization algorithm can solve the codeword sequence more accurately and with better robustness than the other methods.When using the same network for blurred image restoration,the proposed algorithm yields superior restoration results compared with the existing methods from subjective and objective perspectives.Thus,the proposed method has a high engineering application value for enhancing motion blur restoration.

关 键 词：编码曝光 码字搜索 智能优化 运动模糊复原 

分 类 号：TN911.21[电子电信—通信与信息系统]