区域生长（region growing）是指将成组的像素或区域发展成更大区域的过程。从种子点的集合开始，从这些点的区域增长是通过将与每个种子点有相似属性像强度、灰度级、纹理颜色等的相邻像素合并到此区域。它是一个迭代的过程，这里每个种子像素点都迭代生长，直到处理过每个像素，因此形成了不同的区域，这些区域它们的边界通过闭合的多边形定义。-Region growing (region growing) is the pixel will become the group into a larger regional or regional development process. Collection of seed points from the beginning, from the point of the region is growing with each seed point by similar properties such as strength, gray scale, color and texture of adjacent pixels merge into this area. It is an iterative process, where each iteration of the seed pixel are growing, until processed for each pixel, thus creating a different area, the boundaries of these regions are defined by closed polygons.