Title
Detecting Low-Rank Regions in Omnidirectional Images
Abstract
Planar low-rank regions commonly found in man-made environments, can be used to estimate a rectifying homography that provides valuable information about the camera and the 3D plane they observe. Methods to recover such a homography exist, but detection of low-rank regions is largely unsolved, especially for omnidirectional cameras where significant distortions make the problem even more challenging. In this paper we address this problem as follows. First we propose a method to generate a low-rank probability map on an omnidirectional image and use it to build a training set in a self-supervised manner to train deep models to predict low-rank likelihood maps for omnidirectional images. Second, we propose to adapt regular CNN operators to equirectangular images and to combine them seamlessly into a network where each layer preserves the properties of the equirectangular representation. Finally, on the new KITTI360 dataset, we show that the rectifying homography of detected low-rank regions in such predicted maps allows to factorize out the camera-plane pose up to certain ambiguities that can be easily overcome.
Year
DOI
Venue
2021
10.1109/CVPRW53098.2021.00408
2021 IEEE/CVF CONFERENCE ON COMPUTER VISION AND PATTERN RECOGITION WORKSHOPS (CVPRW 2021)
DocType
ISSN
Citations 
Conference
2160-7508
0
PageRank 
References 
Authors
0.34
0
4
Name
Order
Citations
PageRank
Zoltan Kato126528.28
Gabor Nagy200.34
Martin Humenberger300.34
Gabriela Csurka497285.08