Near-recursive optical flow from weighted image differences

Emanuele Trucco, Tiziano Tommasini, Vito Roberto

Research output: Contribution to journalArticle

Abstract

This correspondence derives a formal link between temporally weighted frame differences, or disturbance fields, which carry limited information suitable for motion detection, and the optic flow (OF), which carries richer information on local image motion. We use this link to derive a novel, simple, near-recursive optic flow algorithm based on a recursive-filter formulation. Most quantities involved are computed recursively, using only data from the current and previous frame. We can limit expensive OF calculatious to pixels where motion magnitude is sufficiently high using image differences which the algorithm computes anyway. Experimental results with well-known synthetic, ground-truthed test sequences and standard performance metries indicate good quantitative performance. Tests with real sequences suggest similar or better performance than a well-known, similar algorithm due to Lucas and Kanade (LK). © 2005 IEEE.

Original languageEnglish
Pages (from-to)124-129
Number of pages6
JournalIEEE Transactions on Systems, Man, and Cybernetics, Part B: Cybernetics
Volume35
Issue number1
DOIs
Publication statusPublished - Feb 2005

Keywords

  • Disturbance fields
  • Motion analysis
  • Optic flow

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