Shenghan Ren, Xueli Chen, Xu Cao, Shouping Zhu, Jimin Liang. GPU accelerated simplified harmonic spherical approximation equations for three-dimensional optical imaging[J]. Chinese Optics Letters, 2016, 14(7): 071701
- Chinese Optics Letters
- Vol. 14, Issue 7, 071701 (2016)
Fig. 1. Flowchart of the GPU-accelerated framework for the SPN equations.
Fig. 2. Kernel function of matrix-vector multiplication for the CSR sparse matrix format using 32 thread warp per matrix row.
Fig. 3. Phantoms used in accuracy validation: (a) homogeneous cylindrical phantom. (b) Digital mouse model based phantom. (c) and (d) comparative results between the GPU-accelerated SPN equations (N = 1
Fig. 4. (a) Speed-up ratio of the total processing time using the GPU-accelerated SPN method over the CPU-based one. (b) Speed-up ratio of the GPU-accelerated CG solver over the CPU one for solving the system matrix of SP7 equations.
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Table 1. Optical Properties of Digital Mouse Phantom at the Wavelength of 650 nm, including Absorption Coefficient (μa), Scattering Coefficient (μs), Anisotropy Coefficient (g), and Refractive Index (n)
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