高速实时图像压缩系统去条带效应的方法研究  

Research of method for boundary artifact reduction in high-speed real-time image compression system

作　　者：马文波[1] 赵保军[1] 毛二可[1] 

机构地区：[1]北京理工大学信息科学与技术学院电子工程系,北京100081

出　　处：《系统工程与电子技术》2006年第12期1783-1785,1793,共4页Systems Engineering and Electronics

基　　金：国家"863"高技术计划基金资助课题(2002AA813032)

摘　　要：在实时压缩高分辨率CCD相机产生的高数据率图像时,为保证实时性,必须采用分块图像数据,并且流水处理的工作方式。但在分块处理过程中,由于小波变换的边界扩展及系数量化等原因会产生较严重的边缘赝像效应。针对此问题,分析了其产生的原因并采用重叠处理部分图像数据的方法,很好地解决了此问题。实验显示此方法消耗的额外时间不多,满足实时处理的要求,并且极大地提高了重建图像的质量。In order to meet real-time compression performance for image produced by CCD camera with high resolution, image data must be divided into several blocks and pipelining method is implemented. However, in the compression process of blocking image data, severe boundary artifact will be produced because of boundary extension and coefficient quantification. In order to solve these problems, its reason and adopt overlapping part of images method for compression is analyzed. The result of experiment shows that this method does use a little more excess time, meets real-time performance too and obtains satisfactory visual quality for the reconstructive image.

关 键 词：图像压缩 实时处理 条带效应 小波变换 零树编码 

分 类 号：TN919[电子电信—通信与信息系统]