中文摘要：

针对JPEG2000中EBCOT编码算法在上下文的生成过程中需对比特平面进行多次扫描，提出基于单窗口扫描的并行EBCOT编码算法．通过预存行状态去除带间相关性，然后进行基于单窗口的上下文逻辑编码，并优先计算比特平面状态值，实现一次扫描完成比特平面及平面内三个通道的并行编码．实验结果表明，在保证一定编码质量的前提下，有效地提高了JPEG2000系统的并行性，压缩了编码时间．

英文摘要：

Aimed at the multi-scanning in the process of context generation in EBCOT algorithm of JPEG2000, a parallel EBCOT encoding algorithm based on single-window scanning was proposed. Through saving row-status in advance to eliminate the correlation between strips, encoding the logic contexts based on single window and computing the bit-plane status with priority, the algorithm can achieve the parallel encoding of bit-plane and three passes in the bit -plane by a single scanning. The experimental results prove that the parallelism of JPEG2000 system is improved effectively and the encoding time is reduced greatly.