US 6,724,435 B2Granted

Method for independently controlling hue or saturation of individual colors in a real time digital video image

AssigneeOplus Technologies Ltd.

InventorYosef Segman

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Abstract

A method for independently controlling hue or saturation of individual colors in a real time digital video image, without affecting the hue or saturation of any other color in the same real time digital video image. Includes selecting a uniquely defined independent color hue control delta value or independent color saturation control delta value, where the delta value represents an extent or magnitude of change in hue or saturation, respectively, of the selected individual color, and, separately evaluating uniquely defined independent color hue control functions or independent color saturation control functions, using input image pixel values of the plurality of input image pixels identified as having the individual color in the real time digital video input image whose hue or saturation was selected to be independently changed, and using the corresponding selected independent color hue control delta value or the corresponding selected independent color saturation control delta value, respectively, for forming and displaying a corresponding plurality of output image pixels having the individual color whose hue or saturation was selected to be independently changed.

Claims32

Dependent claims

A method for independently controlling hue or saturation of individual colors in a real time digital video image, comprising the steps of:

(a) receiving and characterizing the real time digital video input image featuring input image pixels;
(b) selecting to independently change the hue or the saturation of an individual color in the real time digital video input image, by selecting an independent color hue control delta value or an independent color saturation control delta value, respectively, wherein said independent color hue control delta value represents an extent of change in the hue of said selected individual color and wherein said independent color saturation control delta value represents an extent of change in the saturation of said selected individual color;
(c) identifying a plurality of said input image pixels having said selected individual color in the real time digital video input image with the hue or the saturation selected to be independently changed, by performing arithmetic and logical operations using input image pixel values of each said input image pixel of the real time digital video input image;
(d) determining corresponding output image pixel values for each of said plurality of said input image pixels identified as having said selected individual color in the real time digital video input image with the hue or the saturation selected to be independently changed, by separately evaluating independent color hue control functions or independent color saturation control functions, respectively, using said input image pixel values of said plurality of said input image pixels, and using corresponding said selected independent color hue control delta value or said corresponding selected independent color saturation control delta value, for forming a corresponding plurality of output image pixels having said selected individual color with the hue or the saturation selected to be independently changed;
and
(e) displaying a real time digital video output image including said corresponding plurality of said output image pixels having said selected individual color with the hue or the saturation selected to be independently changed in the real time digital video input image, whereby the hue or the saturation of said selected individual color in the real time digital video input image has been changed without affecting the hue or the saturation of any other individual color in the real time digital video input image.

3 more elements

A system for independently controlling hue or saturation of individual colors in a real time digital video image, comprising:

(a) a real time digital video image display device displaying the real time digital video image featuring input image pixels;
(b) a master control device in operative electronic communication with and controlling said real time digital video image display device;
and
(c) a viewer of said real time digital video image display device operating said master control device for selecting to independently change the hue or the saturation of an individual color in the real time digital video input image, by selecting an independent color hue control delta value or an independent color saturation control delta value featured on said master control device, respectively, wherein said independent color hue control delta value represents an extent of change in the hue of said selected individual color and wherein said independent color saturation control delta value represents an extent of change in the saturation of said selected individual color, whereby said real time digital video image display device in said operative electronic communication with said master control device performs steps including:
(i) identifying a plurality of said input image pixels having said selected individual color in the real time digital video input image with the hue or the saturation selected to be independently changed, by performing arithmetic and logical operations using input image pixel values of each said input image pixel of the real time digital video input image;
(ii) determining corresponding output image pixel values for each of said plurality of said input image pixels identified as having said selected individual color in the real time digital video input image with the hue or the saturation selected to be independently changed, by separately evaluating independent color hue control functions or independent color saturation control functions, respectively, using said input image pixel values of said plurality of said input image pixels, and using corresponding said selected independent color hue control delta value or said corresponding selected independent color saturation control delta value, for forming a corresponding plurality of output image pixels having said selected individual color with the hue or the saturation selected to be independently changed;
and
(iii) displaying a real time digital video output image including said corresponding plurality of said output image pixels having said selected individual color with the hue or the saturation selected to be independently changed in the real time digital video input image, whereby the hue or the saturation of said selected individual color in the real time digital video input image has been changed without affecting the hue or the saturation of any other individual color in the real time digital video input image.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 09/922,164Filed 6 Aug 2001
Published: US 2003/0025835 A16 Feb 2003
Granted: 20 Apr 2004
Term ends: Not estimatedThe source records don’t support an estimate.

Classification3 codes

H04N 9/643
Circuits for processing colour signals: hue control means, e.g. flesh tone control
H04N 23/86
For processing colour signals: for controlling the colour saturation of colour signals, e.g. automatic chroma control circuits
H04N
Pictorial communication

Family

US 2003/0025835 A1Pre-grant publication · published 6 Feb 2003
US 6,724,435 B2This patent

From the US filing history. Foreign family members aren’t listed.

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