Fast extended focused imaging in digital holography using a graphics processing unit

作者：Wang, Le; Zhao, Jianlin^*; Di, Jianglei; Jiang, Hongzhen

来源：Optics Letters, 2011, 36(9): 1620-1622.

DOI：10.1364/OL.36.001620

• RECONSTRUCTION
• ALGORITHM

We present a simple and effective method for reconstructing extended focused images in digital holography using a graphics processing unit (GPU). The Fresnel transform method is simplified by an algorithm named fast Fourier transform pruning with frequency shift. Then the pixel size consistency problem is solved by coordinate transformation and combining the subpixel resampling and the fast Fourier transform pruning with frequency shift. With the assistance of the GPU, we implemented an improved parallel version of this method, which obtained about a 300-500-fold speedup compared with central processing unit codes.

• 出版日期2011-5-1
• 单位西北工业大学