摘要
Up to now, detailedstrategies and algorithms of automaticchange detection for road networksbased on GIS have not been discussed.This paper discusses two differentstrategies of automatic change detec-tion for images with low resolution andhigh resolution using old GIS data,and presents a buffer detection andtracing algorithm for detecting roadfrom low-resolution images and a newprofile tracing algorithm for detectingroad from high-resolution images. Forfeature-level change detection (FL-CD), a so-called buffer detection algo-rithm is proposed to detect changes offeatures. Some ideas and algorithms ofusing GIS prior information and somecontext information such as substructures of road in high-resolution imagesto assist road detection and extractionare described in detail.
Up to now, detailed strategies and algorithms of automatic change detectionfor road networks based on GIS have not been discussed. This paper discusses two differentstrategies of automatic change detection for images with low resolution and high resolution usingold GIS data, and presents a buffer detection and tracing algorithm for detecting road fromlow-resolution images and a new profile tracing algorithm for detecting road from high-resolutionimages. For feature-level change detection (FL-CD) , a so-called buffer detection algorithm isproposed to detect changes of features. Some ideas and algorithms of using GIS prior information andsome context information such as substructures of road in high-resolution images to assist roaddetection and extraction are described in detail.
基金
the Open Research Fund Program of LIESMARS of Wuhan University (No. (01)0304).
