1. A three-dimensional image display apparatus comprising: a stereo image data storage section for storing stereo images of a measuring object; an orientation section for finding relationship as to corresponding points in the stereo images based on a position and a tilt at which the stereo images are photographed; a three-dimensional coordinate data section for obtaining three-dimensional coordinate data on the corresponding points of the measuring object based on the relationship as to the corresponding points found by the orientation section; a model forming section for forming a model of the measuring object based on the three-dimensional coordinate data on the corresponding points; an image correlating section for correlating the stereo images of the measuring object stored in the stereo image data storage section and the model formed by the model forming section, using the relationship as to the corresponding points found by the orientation section; and a model display section for displaying an image of the measuring object to which stereoscopic texture is applied, using the stereo image correlated with the model by the image correlating section.