Improved Census Transform Method for Semi-Global Matching Algorithm

Xie Pan, Guoben Jun, Yuanping Xu*, Zhijie Xu, Tukun Li, Jian Huang, Wenbo Qiao

*Corresponding author for this work

Research output: Chapter in Book or Report/Conference proceedingConference Proceedingpeer-review

5 Citations (Scopus)

Abstract

In order to solve the problem that the original Census transform algorithm is easily affected by the gray value of the central pixel, and further improvement of the matching accuracy of SGM algorithm, this study proposes an improved Census transform algorithm based on the sequence template. It divides the pixel values in the Census window into sequential sequences from the outside to inside, and then constructs Census encoding templates within and between sequences according to predefined rules in this study, such that the Census value of the center pixel can contain more information within the window, and can further improve the matching accuracy of SGM. Experimental results show that the improved sequence template-based Census transform method can enhance average 16.26% matching accuracy of SGM algorithm, while preserving its efficiency.

Original languageEnglish
Title of host publication2021 26th International Conference on Automation and Computing
Subtitle of host publicationSystem Intelligence through Automation and Computing, ICAC 2021
EditorsChenguang Yang
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781860435577
DOIs
Publication statusPublished - 2021
Externally publishedYes
Event26th International Conference on Automation and Computing, ICAC 2021 - Portsmouth, United Kingdom
Duration: 2 Sept 20214 Sept 2021

Publication series

Name2021 26th International Conference on Automation and Computing: System Intelligence through Automation and Computing, ICAC 2021

Conference

Conference26th International Conference on Automation and Computing, ICAC 2021
Country/TerritoryUnited Kingdom
CityPortsmouth
Period2/09/214/09/21

Keywords

  • Census transform
  • Census window
  • sequence templates
  • SGM
  • weak texture region

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