易于硬件实现的遥感图像JPEG2000压缩编码  

Application of JPEG2000 in the Remote Sensing Image

作　　者：肖江[1] 吴成柯[1] 邓家先[1] 张建龙[1] 庄怀宇[1] 

机构地区：[1]西安电子科技大学综合业务网旧家重点实验室,博士研究生西安710071

出　　处：《光学与光电技术》2003年第4期30-33,38,共5页Optics & Optoelectronic Technology

基　　金："十五"军事通信技术预研项目(410010302);国防科技预研基金(J20.12.1.DZ01);高效实时高光谱遥感图像压缩技术研究(708-2-3-3)资助

摘　　要：讨论了易于硬件实现的JPEG2000内嵌码块编码压缩系统方案,提出了一种针对遥感图像特点的基于比特平面加权的EBCOT算法。本文算法采用比特平面提升减少遥感图像压缩中小目标的丢失问题,比JPEG2000建议的视觉加权率失真斜率提升方法相比有更好的效果。实验证明算法完全继承了JPEG2000高客观质量、分辨率渐进性、好的抗误码性能等优良特性,同时降低了T_1编码器的编码时间,有利于硬件的实现,在遥感图像压缩领域具有实用价值。JPEG2000 is the newest standard for still image compression, with which EBCOT is used as the algorithm for coder. Usually, EBCOT is composed of tier 1 and tier 2, in which tier 1 is complex and the time spent is long. Meanwhile because JPEG2000 is the usual standard for still image, compression, it does not take the features of Remote Sensing Image into account that the correlation between the coefficients is less and the small targets more than those in usual image. In this paper, a method for JPEG2000 implementation is proposed, and it is suitable for hardware, spends less time to complement it and hold much more small targets as well.

关 键 词：遥感图像 图像压缩 图像编码 T1编码器 JPEG2000 EBCOT 图像处理 抗误码性能 硬件实现 视觉加权率失真斜率 

分 类 号：TP751[自动化与计算机技术—检测技术与自动化装置]