我在网上看见一篇很好的文章，有关以下内容：图像二值化，去离散噪声，彩色图像灰度化，特征提取，灰度化，彩色图像平均灰度(I saw a good article on the Internet. The following are the following contents: image two valued, discrete noise, color grayscale, feature extraction, grayscale and average color image.)