Image processing apparatus, image projection apparatus, and image processing method

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United States of America Patent

PATENT NO 10129511
APP PUB NO 20180035088A1
SERIAL NO

15654816

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Abstract

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An image processing apparatus includes an input image color space conversion unit that converts an input image signal of each frame of a moving image signal into a luminance image signal and a color difference image signal, a luminance image correction unit that adjusts a histogram equalization correction intensity of a histogram equalization process for each frame and applies the histogram equalization process to the luminance image signal of each frame to generate a luminance-corrected image signal, a color difference image correction unit that applies a saturation enhancement process to the color difference image signal of each frame, in parallel with the histogram equalization process, to generate a color-difference-corrected image signal, and an output image color space conversion unit that converts the luminance-corrected image signal and the color-difference-corrected image signal into an output image signal in the same format as the input image signal.

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Patent Owner(s)

  • RICOH COMPANY, LTD.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Nose, Masaki Kanagawa, JP 80 375

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