Invention Grant
US09036205B2 Image processing apparatus and method for correcting luminance and saturation of a pixel in an image or of a target lattice point in a lookup table
有权
用于校正查找表中的图像或目标网格点中的像素的亮度和饱和度的图像处理装置和方法
- Patent Title: Image processing apparatus and method for correcting luminance and saturation of a pixel in an image or of a target lattice point in a lookup table
- Patent Title (中): 用于校正查找表中的图像或目标网格点中的像素的亮度和饱和度的图像处理装置和方法
-
Application No.: US14047346Application Date: 2013-10-07
-
Publication No.: US09036205B2Publication Date: 2015-05-19
- Inventor: Kiyoshi Umeda , Ryosuke Iguchi
- Applicant: CANON KABUSHIKI KAISHA
- Applicant Address: JP Tokyo
- Assignee: Canon Kabushiki Kaisha
- Current Assignee: Canon Kabushiki Kaisha
- Current Assignee Address: JP Tokyo
- Agency: Fitzpatrick, Cella, Harper & Scinto
- Priority: JP2009-122804 20090521
- Main IPC: G06T5/00
- IPC: G06T5/00 ; G06T1/00 ; H04N1/407 ; H04N1/60
Abstract:
A gradation-correcting curve to correct a gradation of an input image is generated. Gradation correction based on the gradation-correcting curve is made to a boundary pixel of a color-reproduction space at the same saturation as that of a target lattice point and at a hue of the target lattice point. An equal-saturation line is set by using the boundary pixel of the color-reproduction space after the gradation correction. A saturation-correction amount of the target lattice point is decided based on the gradation-correcting curve and the equal-saturation line.
Public/Granted literature
- US20140037208A1 IMAGE PROCESSING APPARATUS, METHOD, AND PROGRAM-RECORDED STORAGE MEDIUM Public/Granted day:2014-02-06
Information query
