This paper presents a high speed method to determine the Shack-Hartmann spot positions in 2 ms. The Shack-Hartmann sensor is an invaluable aberration measurement tool used to inform adaptive optics correction across many fields, from ophthalmology to astronomy. Coupling the sensor with a corrector, such as a deformable mirror, adaptive optics systems provide diffraction-limited imaging. In fields such as astronomy and ophthalmology, the aberrations are rapidly changing due to turbulence in the former and biological processes in the latter. In order to keep up with these changes, and provide optimal correction, the aberrations must first be rapidly measured, which relies on determining the spot positions. The authors leverage the parallel processing capability of a CPU/GPU hybrid platform to retrieve the spot positions. Future work will incorporate this technology into adaptive optics systems to improve their performance.
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