关键词: 鱼眼图像校正, 视点, 漫游, 球面映射模型

Abstract: Since significant distortion exists in fisheye image and it is non-intuitive to
represent scene information, a scene roaming method of fisheye image based on viewpoint
correction is proposed in this paper. In this method, the hemisphere space represented by fisheye
image is taken as the viewing target, through transferring the viewpoint to roam in the hemisphere
space, so that different information in the scene is observed intuitively. In this method, a spherical
mapping model is build based on fisheye image correction method, and real-time correction of the
viewpoints centered at observation area is realized based on the mapping relationship. The
roaming is realized through displaying the viewing area after correction in real time during
viewpoint changing process. Experimental results show that, real time roaming of spherical space
represented by fisheye images can be achieved through the method, and the images displayed
during roaming process satisfy the line restriction rule.

Key words: fisheye image correction, viewpoint, roaming, spherical mapping model