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28 March 2023 A novel volumetric fusion algorithm for optical-resolution photoacoustic microscopy based on 3D-SWT and joint weighted evaluation optimization
Xianlin Song, Sihang Li, Zhuangzhuang Wang, Xiongjun Cao
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Proceedings Volume 12601, SPIE-CLP Conference on Advanced Photonics 2022; 1260104 (2023) https://doi.org/10.1117/12.2666551
Event: SPIE-CLP Conference on Advanced Photonics 2022, 2022, Online Only
Abstract
As an important branch of photoacoustic microscopy, optical-resolution photoacoustic microscopy suffers from limited depth of field due to the strongly focused laser beam. In this work, a 3D information fusion algorithm based on 3D stationary wavelet transform and joint weighted evaluation optimization is proposed to fuse multi-focus photoacoustic data to achieve large-volumetric and high-resolution 3D imaging. First, a three-dimensional stationary wavelet transform was performed on the multi-focus data to obtain eight wavelet coefficients. Differential evolution algorithm based on joint weighted evaluation was then employed to optimize the block size of division for each wavelet coefficient. Corresponding sub-coefficients of multi-focus 3D data were fused with the proposed fusion rule utilizing standard deviation for focus detection. Finally, photoacoustic microscopy with large depth of field can be achieved by applying the inverse stationary wavelet transform on the 8 fused sub-coefficients. The fusion result of multi-focus vertically tilted fiber shows that the depth of field of optical-resolution photoacoustic microscopy is doubled without sacrificing lateral resolution via the proposed method. The effectiveness of the proposed method was verified through the fusion results of multi-focus vessel data.
© (2023) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
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Xianlin Song, Sihang Li, Zhuangzhuang Wang, and Xiongjun Cao "A novel volumetric fusion algorithm for optical-resolution photoacoustic microscopy based on 3D-SWT and joint weighted evaluation optimization", Proc. SPIE 12601, SPIE-CLP Conference on Advanced Photonics 2022, 1260104 (28 March 2023); https://doi.org/10.1117/12.2666551
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KEYWORDS
Image fusion
Photoacoustic spectroscopy
Data fusion
Photoacoustic microscopy
3D image processing
Wavelets
Stationary wavelet transform
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