Phase-differencing in stereo vision: Solving the localisation problem

J. M H Du Buf, K. Terzic, J. M F Rodrigues

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)

Abstract

Complex Gabor filters with phases in quadrature are often used to model even- and odd-symmetric simple cells in the primary visual cortex. In stereo vision, the phase difference between the responses of the left and right views can be used to construct a disparity or depth map. Various constraints can be applied in order to construct smooth maps, but this leads to very imprecise depth transitions. In this theoretical paper we show, by using lines and edges as image primitives, the origin of the localisation problem. We also argue that disparity should be attributed to lines and edges, rather than trying to construct a 3D surface map in cortical area V1. We derive allowable translation ranges which yield correct disparity estimates, both for left-view centered vision and for cyclopean vision.

Original languageEnglish
Title of host publicationBIOSIGNALS 2013 - Proceedings of the International Conference on Bio-Inspired Systems and Signal Processing
Pages254-263
Number of pages10
Publication statusPublished - 27 May 2013
EventInternational Conference on Bio-Inspired Systems and Signal Processing, BIOSIGNALS 2013 - Barcelona, Spain
Duration: 11 Feb 201314 Feb 2013

Conference

ConferenceInternational Conference on Bio-Inspired Systems and Signal Processing, BIOSIGNALS 2013
Country/TerritorySpain
CityBarcelona
Period11/02/1314/02/13

Keywords

  • Complex gabor filters
  • Disparity
  • Edges
  • Lines
  • Localisation
  • Phase

Fingerprint

Dive into the research topics of 'Phase-differencing in stereo vision: Solving the localisation problem'. Together they form a unique fingerprint.

Cite this