Tracking speckle motion with directional wavelets

Igor Patrickeyev; Sean J. Kirkpatrick; Donald Dean Duncan

doi:10.1117/12.434734

9 July 2001 Tracking speckle motion with directional wavelets

Igor Patrickeyev, Sean J. Kirkpatrick, Donald Dean Duncan

Author Affiliations +

Proceedings Volume 4257, Laser-Tissue Interaction XII: Photochemical, Photothermal, and Photomechanical; (2001) https://doi.org/10.1117/12.434734
Event: BiOS 2001 The International Symposium on Biomedical Optics, 2001, San Jose, CA, United States

Abstract

Speckle-based strain measurements in biological tissues can be useful for many applications. In using the speckle strain gauge the goal is to observe and track speckles that are translating in both time and space as a result of an applied load. Usually, speckle images are processed with the FFT or the Radon transform. Here we have attempted to apply the novel technique of the Directional Continuous Wavelet Transform (DCWT) for image processing. This method yields two kinds of image decompositions 1) in terms of dilation scale and rotation angle (scale-angle representation) or 2) in terms of time and rotation angle (time-angle representation). In our study these properties of DCWT have been used to track the dynamics of speckle motions.

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Igor Patrickeyev, Sean J. Kirkpatrick, and Donald Dean Duncan "Tracking speckle motion with directional wavelets", Proc. SPIE 4257, Laser-Tissue Interaction XII: Photochemical, Photothermal, and Photomechanical, (9 July 2001); https://doi.org/10.1117/12.434734

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