Urban Change Detection Method Using the Aerial Hyper Spectral images for Digital Map modify Drawing

摘要

The present invention relates to an urban change detection method using aerial hyper-spectral images for digital map modification drawing and, more specifically, relates to an urban change detection method using aerial hyper-spectral images for digital map modification drawing which extracts the modified areas from a computation of the superimposed DSM which are generated from the aerial hyper-spectral images of an area taken at different times. The method comprises: (S10) a step of inputting two or more aerial hyper-spectral images of the same area, the exterior orientation parameter of the aerial hyper-spectral images, and the photography information of the hyper-spectral camera which was used to take the aerial hyper-spectral images into the detection system; (S20) a step of calculating the relative orientation of the aerial hyper-spectral images performed by the detection system to which the image data were inputted; (S30) a step of generating a digital surface model (DSM) based on the shape edges and conjugations between the aerial hyper-spectral images confirmed by the detection system with the relative orientation; (S40) a step of superimposing the DSM where the detection system superimposes the DSM of the same area taken at different times, and calculates the difference in the height of each section which are equally divided; and (S50) a step of detecting the modified areas where the detection system outputs the height differences into a specified output form.