实现了图像的灰度化并进一步用于视频监视控，预报误差法参数辨识-松弛的思想，实现了图像的加水印，去噪，加噪声等功能。- Achieve a grayscale image and further control for video surveillance, Prediction Error Method for Parameter Identification- the idea of relaxation, Realize image watermarking, de-noising, plus noise and other functions.