一种基于双边界的遥感图像动态变化信息判读方法研究

目前用于遥感图像动态变化信息提取的方法不少,但它们在用于局部图像的动态判读与专题图件的生成时,操作过于烦琐,效率不高。双边界方法是解决这一问题的有效途径之一。通过双边界的范围,易于判读变化的地物;通过双边界的颜色信息,易于掌握变化信息的特征。基于双边界的动态变化信息判读方法具有操作简单、灵活及判读时误差相对较小的特点,可大大减轻判读工作量。本文简述该方法提取遥感图像中动态变化信息的原理,详细介绍其应用方法,最后进行了土地利用动态变化信息提取试验。

THE APPROACH TO DYNAMIC CHANGE INTERPRETATION FROM REMOTE SENSING IMAGE ON THE BASIS OF DOUBLE-EDGE TECHNIQUE

There are many approaches to the extraction of dynamic change information from remote sensing imagery. However, their operations are very cumbersome, and their efficiency is not so ideal. Double-edge seems to be a good solution. Double edge refers to the boundaries between the neighboring objects or parts in remote sensing image, with the width of its boundary being two pixels, and it can be described by two raster lines. It helps to interpret the objects in remote sensing image by the region of double-edge and to understand the features of dynamic changes by the colors of the double-edge. The procedure for interpretation of dynamic changes based on double-edge is simple and convenient, and the technique contributes to cutting down the work load and reducing the interpretation errors. This paper presents the principles and application of this approach, and makes the information extraction test for land use changes from remote sensing image.