Acta Geodaetica et Cartographica Sinica ›› 2017, Vol. 46 ›› Issue (4): 487-497.doi: 10.11947/j.AGCS.2017.20160456

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Simulation Analysis of Cylindrical Panoramic Image Mosaic

ZHU Ningning   

  1. School of Remote Sensing and Information Engineering, Wuhan University, Wuhan 430079, China
  • Received:2016-09-20 Revised:2017-01-12 Online:2017-04-20 Published:2017-05-05

Abstract: With the rise of virtual reality (VR) technology, panoramic images are used more widely, which obtained by multi-camera stitching and take advantage of homography matrix and image transformation, however, this method will destroy the collinear condition, make it's difficult to 3D reconstruction and other work. This paper proposes a new method for cylindrical panoramic image mosaic, which set the number of mosaic camera, imaging focal length, imaging position and imaging attitude, simulate the mapping process of multi-camera and construct cylindrical imaging equation from 3D points to 2D image based on photogrammetric collinearity equations. This cylindrical imaging equation can not only be used for panoramic stitching, but also be used for precision analysis, test results show: ①this method can be used for panoramic stitching under the condition of multi-camera and incline imaging; ②the accuracy of panoramic stitching is affected by 3 kinds of parameter errors including focus, displacement and rotation angle, in which focus error can be corrected by image resampling, displacement error is closely related to object distance and rotation angle error is affected mainly by the number of cameras.

Key words: panoramic image mosaic, cylindrical projection, imaging equation, applicability analysis, precision analysis

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