FIELD: information technologies.
SUBSTANCE: image processing device is implemented with higher sharpness, containing a smoothing facility to smoothen brightness of an input image; a subtracting facility to subtract a smoothened image from the input image brightness; a calculating facility related to brightness of the amplification ratio to calculate the amplification ratio related to brightness from the input image; the first multiplying facility to multiply a differential image and the amplification ratio related to brightness; a summation facility to add the multiplication result to the input image brightness; a facility to calculate a colour contrast amplification ratio to calculate the colour contrast amplification ratio from the colour contrast of the input image and the amplification ratio related to brightness; the second multiplication facility to multiply the colour contrast of the input image and the colour contrast amplification ratio.
EFFECT: improved image processing in part of higher sharpness by changing brightness only, without a shade change.
9 cl, 6 dwg
