圆柱物体内壁的锥面折反射全景图像展开 下载: 864次
ing at the problem of distortion of the panoramic image collected by the conical catadioptric panoramic imaging system, a panoramic image expansion method of inner surface of cylindrical objects under the conical bidirectional projection model is proposed. Forward and reverse projection models with distortion parameters are established, first, the pixels of the panoramic image of cylindrical inner wall are reversely mapped to the expanded image, and then forward the missing pixels in the expanded image to the original panoramic image, through the panoramic image and the expanded image corresponding to the coordinate mapping relationship of the pixels, the expansion of the panoramic image of cylindrical inner wall is realized. The experimental results show that the tangential and radial distortion of the panoramic image of cylindrical inner wall are corrected better, the positioning accuracy of the bidirectional projection model of the cone surface is sub-pixel level, comparing with the approximate expansion method of concentric rings, the information entropy and the average gradient are both improved to different extents, it can be effectively applied to the expansion of panoramic images of cylindrical inner wall.
景文博, 高雪峰, 黄炳坤, 李世涛, 于洪洋. 圆柱物体内壁的锥面折反射全景图像展开[J]. 光学学报, 2021, 41(3): 0311002. Wenbo Jing, Xuefeng Gao, Bingkun Huang, Shitao Li, Hongyang Yu. Expansion of Conical Catadioptric Panoramic Image of Inner Surface of Cylindrical Objects[J]. Acta Optica Sinica, 2021, 41(3): 0311002.