This paper researched the key issues of the true 3D geographic scene visualization based on the binocular vision. Firstly the essential stereoscopic theories such as the formation of stereoscopic perception are introduced in detail, and several binocular projection models to calculate stereo pairs are given. Secondly, Based on discussion of stereoscopic theory and related experiments, this paper gives an algorithm of binocular parallax model. In the end, by analyzing geographic scene mesh file formats and introducing 3D graphics API, the stereoscopic software rendering geographic scenes in stereo pairs is developed on the parallax 3D-LCD display. That just provides a practical approach for true 3D visualization of virtual geography environment.
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