Journal of Shanghai University >
Stitching algorithm of multi-mode fusional vehicle panorama
Received date: 2018-07-13
Online published: 2018-12-23
As the traditional driver assistant system provides only one viewpoint, its usage is limited. A panoramic stitching algorithm, which can automatically switch between forward and backward modes, is proposed. This algorithm can provide a more flexible viewpoint for drivers. First, the distortion of images input by fish-eye cameras is corrected. Second, the driving direction is deduced by the displacements of the feature points detected between adjacent images. Third, the viewpoint transformation is chosen according to the driving direction, using cylindrical projection for the forward direction and perspective transformation for the backward direction. Finally, images are matched using piecewise stitching in place of the traditional stitching method and overlapped regions are fused. The model can automatically switch the mode according to the driving direction. The images of the cameras are highly reserved. The time cost for the cylindrical projection of this model is 75% lower than the traditional value.
LIU Chang, XU Meihua, GUO Aiying . Stitching algorithm of multi-mode fusional vehicle panorama[J]. Journal of Shanghai University, 2020 , 26(6) : 909 -920 . DOI: 10.12066/j.issn.1007-2861.2098
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