Off-axis quantitative phase imaging processing using CUDA: toward real-time applications

@inproceedings{Pham2011OffaxisQP,
  title={Off-axis quantitative phase imaging processing using CUDA: toward real-time applications},
  author={Hoa Vinh Pham and Huafeng Ding and Nahil A Sobh and Minh N. Do and Sanjay J. Patel and Gabriel Popescu},
  booktitle={Biomedical optics express},
  year={2011}
}
We demonstrate real time off-axis Quantitative Phase Imaging (QPI) using a phase reconstruction algorithm based on NVIDIA's CUDA programming model. The phase unwrapping component is based on Goldstein's algorithm. By mapping the process of extracting phase information and unwrapping to GPU, we are able to speed up the whole procedure by more than 18.8× with respect to CPU processing and ultimately achieve video rate for mega-pixel images. Our CUDA implementation also supports processing of… CONTINUE READING