Computer Science ›› 2019, Vol. 46 ›› Issue (5): 272-278.doi: 10.11896/j.issn.1002-137X.2019.05.042

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Fast Stripe Extraction Method for Structured Light Images with Uneven Illumination

ZHENG Hong-bo, SHI Hao, DU Yi-cheng, ZHANG Mei-yu, QIN Xu-jia   

  1. (College of Computer Science and Technology,Zhejiang University of Technology,Hangzhou 310023,China)
  • Published:2019-05-15

Abstract: The stripe extraction of structured light images can be easily impacted by uneven illumination.The accuracy of the extracted stripes is an important prerequisite for the accuracy of the subsequent 3D reconstruction.Therefore,how to eliminate the influence of uneven illumination and accurately extract the stripes of structured light images is the goal of the study.This paper proposed a processing algorithm combining Gaussian filtering and mean filtering,which is suitable for the structural light image stripe extraction of uneven illumination.The algorithm not only can effectively eliminate the influence of uneven illumination on the image,but also retains the feature information of the original image and achieves good experimental results. In order to speed up the filtering process, this paper used separable filters to improve the algorithm,reducing the computational complexity.In addition,GPU parallel computing-based CUDA technique is used to accelerate the algorithm,and the processing speed is improved greatly.

Key words: CUDA acceleration, Separable filter, Stripe extraction, Uneven illumination

CLC Number: 

  • TP391
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