西安电子科技大学学报（自然科学版）2016，Vol.43Issue(4)：75-80,6.DOI:10.3969/j.issn.1001-2400.2016.04.014
JPEG-LS近无损图像编码器VLSI结构设计
VLSI design of the JPEG-LS near-lossless image encoder
摘要
Abstract
The JPEG‐LS image compression standard brings excellent performance and low complexity , which makes it the widely used in space communications , medicine and many other fields . However , the prediction of the current pixel requires the reconstruction value of the previous pixel in the near‐lossless mode , which leads to complicated computation and a feedback circuit with long latency in hardware implementations . On the basis of an intensive study of the JPEG‐LS algorithm , a forward prediction method of reconstruction value is used and the new VLSI implementation of the JPEG‐LS encoder is proposedinthispaper,whichcanavoidthefeedbacklatency.Comparedwithexistingimplementations,the proposed one has the advantages of higher encoding speed , no nuse of off‐chip storages , and lower power consumption , making it suitable for resource‐limited spaceborne image compression .关键词
图像压缩/近无损/JPEG-LS/前向预测/现场可编程门阵列Key words
image compression/near-lossless/JPEG-LS/forward prediction/FPGA分类
信息技术与安全科学引用本文复制引用
聂永康,雷杰,李云松,宋长贺,吴宪云..JPEG-LS近无损图像编码器VLSI结构设计[J].西安电子科技大学学报（自然科学版）,2016,43(4):75-80,6.基金项目
国家优秀青年基金资助项目（61222101）；国家自然科学基金资助项目（61301287，61301291）；111基地资助项目（B08038）；中央高校基本科研业务费专项资金资助项目（K5051301043）；中国博士后科学基金资助项目 （）
