The Rapid Generation of DOM for Geophysical Applications

Orthophoto have some features, such as informative, rich content, and intuitive truth. This paper discusses how to rapidly produce orthophoto in the situation of flight pattern of aero geophysical. Thiessen polygon method used to build sampling area and automatically generate orthophoto of measurement area, it´s not need to carry on manually edge processing. Given the characteristic of mass data about magnanimous images, we proposed the method of demonstration, roam, and zoom of magnanimous image based on pyramid memory scheduling strategy of piecemeal and graduation.