Image processing apparatus and image processing method
AssigneeKabushiki Kaisha Toshiba
InventorMasami MORIMOTO
Life of this patent
Estimating the term…
Abstract
Saturation information and luminance information are obtained from each pixel included in a frame, and thereafter histogram information corresponding to luminance information is generated by summering weighting coefficient, wherein weighting coefficient is obtained in accordance with the saturation information. The maximum luminance is determined based on the histogram information, and thereafter a brightness of a backlight is determined based on a display ability of a display unit and the maximum luminance. Then, gradation of an input image is converted based on the maximum luminance.
Claims10
An image processing apparatus comprising:
- a saturation extraction unit which obtains saturation information from each pixel included in a frame;
- a luminance extraction unit which obtains luminance information of the each pixel;
- a histogram generation unit which generates histogram information corresponding to luminance information by summering weighting coefficient, wherein a larger weighting coefficient is assigned to a lower saturation;
- a determining unit which determines the maximum luminance based on the histogram information and determines a brightness of a backlight based on a display ability of a display unit and the maximum brightness;
- and
- a gradation conversion unit which converts a gradation of an input image based on the maximum luminance.
A image processing method, comprising:
- obtaining saturation information from each pixel included in a frame;
- obtaining luminance information of the each pixel;
- generating histogram information corresponding to luminance information by summering weighting coefficient, wherein a larger weighting coefficient is assigned to a lower saturation;
- determining the maximum luminance based on the histogram information;
- determining a brightness of a backlight based on a display ability of a display unit and the maximum brightness;
- and
- converting a gradation of an input image based on the maximum luminance.
Dependencies are inferred from the claim text.