| Summary: | 碩士 === 國立中央大學 === 土木工程研究所 === 89 === The focus of this investigation is the geometric correction for the ROCSAT-2 high resolution satellite images. We correct satellite images using digital surface model (DSM) that includes building and terrain information. Unlike frame photography, where all pixels in the image are exposed simultaneously, each line of a high resolution satellite image is collected in a pushbroom fashion at a different instant of time. Due to unavailability of test data, we need to simulate a high resolution satellite image which considers that the terrain and the building may be hidden each other test, due to we don’t have a applicable data.
First of all, we used a satellite-orbit-model of ROCSAT-2, including coordinate-transformation-model, satellite-fly-model, simulation-model and on-board-data-model, and DSM to simulate a high resolution satellite images by Bottom-up approach. In addition, the bases of the simulated image are orthorectified aerial images to minimize differences between the simulate image and the true image.
Once imaging simulation had completed, we will use a satellite-orbit-model of ROCSAT-2 and DSM to orthorectify the simulated high resolution satellite''s image by Bottom-up.
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