包括最后计算压缩图像的峰值信噪比和压缩效果的源码,实现用SDRAM运行nios，同时用SRAM保存摄像头数据，pwm整流器的建模仿真。- Including the final calculation of the compressed image peak signal to noise ratio and compression of the source, Implemented with SDRAM run nios, while saving camera data SRAM, Mod