Image processing algorithms are inherently sub-word parallel(SWP),whose granularity is between data-level parallelism(DLP) and instruction-level parallelism(ILP).

• 图像处理算法的特点决定其是内在可并行的,这种并行粒度介于数据并行(DLP)和指令级并行(ILP)之间,称之为子字并行。