Abstract:  In order to improve the stitching accuracy of images while ensuring image resolution, a new stitching algorithm is designed for digital photographic images when establishing image scenes in virtual reality environments. In a virtual reality environment, the overlapping area of the digital photography image to be spliced is determined, and the feature points are detected within it. Then, by determining the extreme points in the image scale space, unstable feature points in the overlapping areas are filtered out, and feature points are matched. Finally, based on the matching results, precise stitching of digital photographic images is achieved. According to the experiment, compared to traditional algorithms, using this algorithm to concatenate images results in better information entropy and better stitching effect. 

Key words: virtual reality environment, digital photographic images, image stitching algorithm, extraction of overlapping areas, image fusion