由于纹理是由灰度分布在空间位置上反复出现而形成的，因而在图像空间中相隔某距离的两象素之间会存在一定的灰度关系，即图像中灰度的空间相关特性。灰度共生矩阵就是一种通过研究灰度的空间相关特性来描述纹理的常用方法。
Gray-level co-occurrence matrix from an image
图像的灰度共生矩阵(Because the texture is formed by the repeated appearance of the gray distribution in the space position, there will be a certain gray relation between the two pixels apart from a certain distance in the image space, that is, the spatial correlation characteristic of the gray level in the image. Gray level co-occurrence matrix is a commonly used method to describe texture by studying the spatial correlation properties of grayscale.
Gray-level co-occurrence matrix from an image
Grayscale symbiotic matrix of images)