非常适合计算机视觉方面的研究使用,实现了图像的加水印，去噪，加噪声等功能，包含位置式PID算法、积分分离式PID。- Very suitable for the study using computer vision, Realize image watermarking, de-noising, plus noise and other functions, It contains positional PID algorithm, integral separate PID.