Automatic Dsm Generation Form Aerial Three Line Array Ads40 Digital Images

A new image matching algorithm model is proposed in this paper to generate DSM from aerial three line array digital images. Through this model, multiple images (more than 2) can be matched simultaneously and the epipolar line constraint can be used indirectly. Theoretically, the occlusion and multiple solution problems, which are unavoidable in traditionally image matching process, can be greatly solved by this model. Assisted by known image orientation parameters, rough DSM can be automatically generated from the image matching results. Using digital images obtained by ADS40 airborne three line digital camera, experiments to extract, match and optimize grid points have been done. The algorithm model is verified by our experimental results to be effective and robust. At the end of this paper, problems remaining to be studied are presented.