Accelerating phase unwrapping and affine transformations for optical quadrature microscopy using CUDA

Optical Quadrature Microscopy (OQM) is a process which uses phase data to capture information about the sample being studied. OQM is part of an imaging framework developed by the Optical Science Laboratory at Northeastern University. In one particular application of interest, the framework is used to extract phase information from the image of an embryo to determine embryo viability. Phase Unwrapping is the process of reconstructing the real phase shift (propagation delay) of a sample from the measured "wrapped" representation which is between - and +. Unwrapping can be done using the Minimum LP Norm Phase Unwrap algorithm. Images are first preprocessed using an Affine Transform before they are unwrapped. Both of these steps are time consuming and would benefit greatly from parallelization and acceleration. Faster processing would lower many research barriers (in terms of throughput and performance) present when using OQM. In this paper we report on accelerating Phase Unwrap...

• Type: Conference
• Year: 2009
• Where: ASPLOS
• Authors: Perhaad Mistry, Sherman Braganza, David R. Kaeli, Miriam Leeser
• Keywords: ASPLOS 2009, Phase Unwrap Algorithm, Phase Unwrapping, Programming Languages, Real Phase Shift