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Low-cost single-pixel 3D imaging by using an LED array
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DOI：10.1364/OE.26.015623.png)
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Abstract
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We propose a method to perform color imaging with a single photodiode by using light structured illumination generated with a low-cost color LED array. The LED array is used to generate a sequence of color Hadamard patterns which are projected onto the object by a simple optical system while the photodiode records the light intensity. A field programmable gate array (FPGA) controls the LED panel allowing us to obtain high refresh rates up to 10 kHz. The system is extended to 3D imaging by simply adding a low number of photodiodes at different locations. The 3D shape of the object is obtained by using a non-calibrated photometric stereo technique. Experimental results are provided for an LED array with 32 x 32 elements. (C) 2018 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
Keywords:
DETECTORS
PHASE
MICROSCOPY
RESOLUTION
TRANSFORM
FIELD
ILLUMINATION
PHOTODIODE
CAMERA
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