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10 March 2020 Digital focusing and image registration for resolution-preserving angular compounding in optical coherence tomography (OCT) (Conference Presentation)
Jingjing Zhao, Yonatan Winetraub, Edwin Yuan, Orr Zohar, Adam de la Zerda
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Proceedings Volume 11251, Label-free Biomedical Imaging and Sensing (LBIS) 2020; 112510L (2020) https://doi.org/10.1117/12.2544069
Event: SPIE BiOS, 2020, San Francisco, California, United States
Abstract
Optical coherence tomography (OCT) suffers from speckle noise due to use of spatially coherent light, leading to significant reductions in image quality. Angular compounding techniques have been applied to remove speckle noise, but, existing image registration methods only guarantee pure angular compounding in the focal plane and produce spatial averaging in the defocused regions. This work develops an image registration model to correctly localize the real-space location of every pixel in OCT images captured at multiple incident angles, with digital focusing to further increase the lateral resolution and contrast. In the composite image, speckle suppression and resolution enhancement are realized.
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Jingjing Zhao, Yonatan Winetraub, Edwin Yuan, Orr Zohar, and Adam de la Zerda "Digital focusing and image registration for resolution-preserving angular compounding in optical coherence tomography (OCT) (Conference Presentation)", Proc. SPIE 11251, Label-free Biomedical Imaging and Sensing (LBIS) 2020, 112510L (10 March 2020); https://doi.org/10.1117/12.2544069
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KEYWORDS
Optical coherence tomography
Image registration
Image resolution
Speckle
Point spread functions
Resolution enhancement technologies
Spatial resolution
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