基于C6000的滑动窗口图像处理算法存储优化

Memory Optimization of Sliding Window Image Processing Algorithm Based on C6000

片外存储器和片内存储器的数据传输是数字信号处理系统性能提升的瓶颈。针对图像处理中的滑动窗口类问题，该文提出一种有效的存储调度优化方法，分为3步：预取数据到快速局部存储器，减少冗余读入及数据传输和处理重叠。在TMS320DM642DSP上应用了该方法，实验结果表明，与优化前相比加速比为30-70。

Data transfer between internal memory and external memory are bottlenecks in improving DSP performance. A memory optimization method is presented for sliding window algorithm in image processing. There are three steps in the method： prefetching data to local memory, reducing redundancy read and paralleling data transfer and data processing. It uses the method on TMS320DM642 DSP. Experimental result shows that the performance of program can get 30-70 speedup.