Heterogeneous Stereo Imaging Technology Based on Active and Passive Remote Sensing Data

Presently CCD and SAR are the two main space-borne remote sensor systems;most stereoimaging research focuses on the homology between stereoscopic pairs of these sensors.This paperpresents a heterogeneous stereo imaging technology that can incorporate any CCD and SAR image withabsolutely different mechanisms and certain overlapping area into a uniform stereo imaging process system.First,methods to refine geometry model parameters and pixel-precision to automatically match CCD and SARimages are briefly reviewed.Based on this review,a heterogeneous stereo imaging model was constructed andcalculated.All link-road error propagation and accuracy assessment approaches were analyzed.These stepsgave full play to the complementary advantages of CCD and SAR sensors without the harsh restrictions of tra-ditional homology methods.At last,Experiments based on different combination of imaging data were per-formed to ensure that our scheme can be reliably applied to stereo imaging applications over any targetarea.With the input of 3mSAR and 1mCCD images,20m-plane and 30m-vertical precision resultscan be achieved using the technology proposed in this paper.