结合纹理复杂度与小波系数特征的渐进式传输算法  

Progressive transfer algorithm combining texture complexity with wavelet coefficient features

作　　者：王慧 高宇航 许文琪 车俊岭 李勇 Wang Hui;Gao Yuhang;Xu Wenqi;Che Junling;Li Yong(School of Science,Xi’an University of Posts&Telecommunications,Xi’an 710121,China;School of Communication&Information Engineering,Xi’an University of Posts&Telecommunications,Xi’an 710121,China)

机构地区：[1]西安邮电大学理学院,西安710121 [2]西安邮电大学通信与信息工程学院,西安710121

出　　处：《计算机应用研究》2023年第6期1758-1763,共6页Application Research of Computers

摘　　要：针对远程桌面领域的环境需求,提出了一种结合图像纹理复杂度与小波系数特征的渐进式分层算法。首先根据纹理复杂度进行每个图像块的比特分配来提高对目标比特预算的利用率;然后分析图像块内不同子带特征重要性的顺序优化了高频细节分量在渐进式分层算法中的层级结构,并设计了一种根据小波系数特征逐层添加子带传输的渐进式分层算法;最后实现了每个图像块根据分配的比特以及选取的分层方式进行渐进式传输的编解码系统。测试表明所提出的渐进式传输算法在不同图像传输环境中能够重建出质量更佳的图像,并且更加符合人眼的视觉感知特性。该算法对弱网有着更强的适应性,在桌面远程视频图像传输处理领域表现更佳。This paper developed a progressive hierarchical algorithm combining image texture complexity and wavelet coefficient characteristics to meet the requirements of remote desktop environment.Firstly,the algorithm allocated bits for each image block according to texture complexity in order to improve the utilization of target bit budget.Then,it optimized the hierarchical structure of high-frequency detail components in the progressive hierarchical algorithm by analyzing the order of the importance of different subbands features in the image block.And it also designed a progressive hierarchical algorithm that added subbands transmission layer by layer based on the wavelet coefficient characteristics.Finally,according to the allocated bits and the selected layering method,the paper implemented a codec system for progressive transmission of each image block.Simulation experiments show that the proposed progressive transmission algorithm can reconstruct better images in different image transmission environments,and is more in line with the visual perception characteristics of the human eye.The algorithm is more adaptive to weak networks and performs better in the field of desktop remote video image transmission and processing.

关 键 词：渐进式传输 分层设计 纹理复杂度 小波系数特征 远程桌面 

分 类 号：TN919.81[电子电信—通信与信息系统]