Abstract
A computer generated hologram(CGH) is hologram made by computer simulation. As fast calculation method for CGHs, basic object light method has been proposed. Lightwaves of arbitrary object shapes are calculated by transforming calculation of object light for basic object. And calculation method with spherical basic object light has been proposed to reduce memory capacity. We proposed transformations which are slide, rotation, distance, tilt, scaling and skew with spherical basic object light. This paper shows implementation of these transforming calculation on GPU to accelerate. Memory capacity for basic object light is larger than video memory. We divide data of basic object light and improve the algorithm to enable GPU to calculate at high speed. In the processing speed measurement, processing speed on GPU with basic object light is about 700 times faster than CPU.
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