hierarchical approach meaning in English

分级编码和测试法

It is necessary to adopt a hierarchical approach to land allocation to satisfy the most immediate and productive use
政府有必要建立土地分配的优先次序，以满足最迫切需要及达致最大的土地使用成效。
In this paper , we present a multi - feature optimal fusion algorithm , inclusive of skin color , to detect one or multiple faces in color image with complex background . it is a hierarchical approach and integrates the skin color segmentation , face template matching and a neural network frontal face detector . with the elimination of false areas , the search area will become smaller and smaller , and the detection will be accomplished eventually
该算法是一种层次式、由粗到精的检测方法，按照“分割-搜索”的检测模式，将肤色分割、平均脸模板匹配与神经网络验证结合起来，采取逐步排除的方法，一步一步缩小搜索区域，实现彩色图像中单个或多个正面端正人脸的检测与定位。