Abstract: Remote sensor imagery geometric precision correction is paid attention by people at all times. It is an indispensable step in the course of imagery processing. If its precision is low, the procession of imagery disposal of next phase will be influenced. However, in previous work, people found that the operation of imagery geometric precision correction is tedious and boring, its operational process is expatiatory, its efficiency is low, and it is difficult to make its precision up to the mustard. In this paper, a method of TM imagery geometric precision correction based on ERDAS IMAGING is discussed, which takes Tarim river basin as example. In this paper, a method of polynomial geometric precision correction is used. Because the topography of Tarim river basin is flat, this method is efficient. The precision can meet request, wherever the speed of correction is quicker. ERDAS IMAGING software used to correct image has many characteristics consisted in operational simpleness and convenience, practicality, speediness and high precision. Geometric precision correction provides technological preparation for TM imagery processing.

Key words: ERDAS imaging, TM image, Tarim river basin, geometric precision correction