Change Detection Techniques using Optical Remote Sensing: A Survey

Environmental planning and management requires continues updating of map to be significant. This has even become curtail in the rapid development and dynamism of urban areas. The advent of GIS has made the regular update of maps easer with the several images and data acquired by many remote sensors covering the earth today. Changes occur in the environment and urban areas can be historically and temporally monitored and traced using various change detection techniques. The effectiveness of these techniques however depends on some factors. Such factors include specific application, accuracy, time and cost. In this paper an evaluation of some change detection techniques/ algorithm was made to identify their potential, accuracy and effectiveness. The evaluation was carried out through image classification for efficient land use management