OpenOpticalFlow: An Open Source Program for Extraction of Velocity Fields from Flow Visualization Images

Tianshu Liu

doi:10.5334/jors.168

Abstract

This paper describes OpenOpticalFlow, an open source optical flow program in Matlab for extraction of high-resolution velocity fields from various flow visualization images. This program is a useful tool for researchers to use the optical flow method in various flow measurements. The principles of the optical flow method are concisely described, including the physics-based optical flow equation, the variational solution, and errors. The central part of this paper is the descriptions of the main program, relevant subroutines and selection of the relevant parameters in optical flow computation. Examples are given to demonstrate the applications of the optical flow method.

References

Quenot G M Pakleza J Kowalewski T A Particle image velocimetry with optical flow Exp Fluids 1998 25 177 189 10.1007/s003480050222
Open DOI Search in Google Scholar Back to article
Corpetti T Memin E Perez P Dense estimation of fluid flows IEEE Trans on Pattern Analysis and Machine Intelligence 2002 24 365 380 10.1109/34.990137
Open DOI Search in Google Scholar Back to article
Corpetti T Heitz D Arroyo G Memin E Fluid experimental flow estimation based on an optical flow scheme Exp Fluids 2006 40 80 97 10.1007/s00348-005-0048-y
Open DOI Search in Google Scholar Back to article
Ruhnau P Kohlberger T Schnorr C Nobach H Variational optical flow estimation for particle image velocimetry Exp Fluids 2005 38 21 32 10.1007/s00348-004-0880-5
Open DOI Search in Google Scholar Back to article
Heitz D Héas P Mémin E Carlier J Dynamic consistent correlation-variational approach for robust optical flow estimation Exp Fluids 2008 45 595 608 10.1007/s00348-008-0567-4
Open DOI Search in Google Scholar Back to article
Heitz D Memin E Schnorr C Variational fluid flow measurements from image sequences: synopsis and perspectives Exp Fluids 2010 48 369 393 10.1007/s00348-009-0778-3
Open DOI Search in Google Scholar Back to article
Liu T Shen L Fluid flow and optical flow J Fluid Mech 2008 614 253 291 10.1017/S0022112008003273
Open DOI Search in Google Scholar Back to article
Liu T Wang B Choi D Flow structures of Jupiter’s Great Red Spot extracted by using optical flow method Phy Fluids 2012 24 096601 13
Search in Google Scholar Back to article
Liu T Nink J Merati P Tian T Li Y Shieh T Deposition of micron liquid droplets on wall in impinging turbulent air jet Exp Fluids 2010 48 1037 1057 10.1007/s00348-009-0790-7
Open DOI Search in Google Scholar Back to article
Hayasaka K Tagawa Y Liu T Kameda M Optical-flow-based background-oriented schlieren technique for measuring a laser-induced underwater shock wave Exp Fluids 2016 57 179 10.1007/s00348-016-2271-0
Open DOI Search in Google Scholar Back to article
Liu T Merat A Makhmalbaf M H M Fajardo C Merati P Comparison between optical flow and cross-correlation methods for extraction of velocity fields from particle images Exp Fluids 2015 56 166 189 10.1007/s00348-015-2036-1
Open DOI Search in Google Scholar Back to article
Wang B Cai Z Shen L Liu T An analysis of physics-based optical flow method J Comp Appl Math 2015 276 62 80
Search in Google Scholar Back to article
Horn B K Schunck B G Determining optical flow Artificial Intelligence 1981 17 185 204 10.1016/0004-3702(81)90024-2
Open DOI Search in Google Scholar Back to article

OpenOpticalFlow: An Open Source Program for Extraction of Velocity Fields from Flow Visualization Images

Abstract

Paradigm

My account