屏幕内容编码方法研究进展

发布时间：2019-04-08 12:35

【摘要】：随着云计算、虚拟桌面等的普遍推广,屏幕内容图像已成为新一代云——移动计算模型——不可或缺的一部分.研究压缩效率高、实时性好、复杂性适中的屏幕内容编码方法是目前视频编码领域的热点问题之一.从空间域、频率域、时间域和颜色空间4方面分析了屏幕内容图像的数据统计特性,进而重点阐述不连续色调图像的典型编码方法,将现有方法分为基于调色板-索引图的编码算法、基于模板匹配的编码算法、基于块匹配的编码算法、基于字典的编码算法、基于形状表示的编码算法以及时间域编码方法、色度编码方法,并进一步总结基于混合框架的屏幕内容编码方法,对各类算法的优势和存在的不足进行比较、分析和讨论.在此基础上,介绍了HEVC-SCC编码国际标准制定工作的进展,并对屏幕内容编码的未来发展趋势进行了展望.
[Abstract]:With the popularity of cloud computing and virtual desktops, screen content images have become an integral part of the new generation of cloud-mobile computing models. The research on screen content coding with high compression efficiency, good real-time performance and moderate complexity is one of the hot issues in the field of video coding. In this paper, the statistical characteristics of screen content images are analyzed from four aspects: spatial domain, frequency domain, time domain and color space, and then the typical coding methods of discontinuous hue images are emphasized. The existing methods are divided into coding algorithm based on palette-index graph, coding algorithm based on template matching, coding algorithm based on block matching, coding algorithm based on dictionary, coding algorithm based on shape representation and coding method in time domain. Chromaticity coding method, and further summarizes the screen content coding method based on hybrid framework, compares the advantages and disadvantages of various algorithms, analyzes and discusses the advantages and disadvantages of various algorithms. On the basis of this, the development of HEVC-SCC coding international standard is introduced, and the future development trend of screen content coding is prospected.
【作者单位】：辽宁师范大学计算机与信息技术学院;大连理工大学电子信息与电气工程学部;吉林大学计算机科学与技术学院;
【基金】：国家自然科学基金项目(61402214,41271422) 教育部高等学校博士学科点专项科研基金项目(20132136110002) 辽宁省教育厅科学研究一般项目(L201683681) 大连市青年科技之星项目支持计划项目(2015R069,2016RQ046)~~
【分类号】：TN919.81

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