为了实现彩色栅格地图道路的全自动提取，提出了一种闭环反馈提取彩色 栅格地图道路的方法。在地图图像数学模型的基础上，根据地图中对象的颜色特征对地图图 像进行规范化处理。在采用一些算法去除噪声后提取道路，对道路进行细化处理。依据道路 和噪声的特征建立一些判据判断道路的正确性，把道路的提取变成了根据判据不断修正道路 的循环过程，实现道路的全自动提取。试验结果表明了该方法具有较高的准确性、全自动化 和通用性。-color raster to the road map automati

Feature extraction is a key issue in contentbased image retrieval (CBIR). In the past, a number of texture features have been proposed in literature, including statistic methods and spectral methods. However, most of them are not able to accu

matlab code is designed for template matching and further extraction of water bodies from satellite images based on gradient density. code also consists of color segmentation and automatic useful cluster selections.