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US 4,908,701 AGranted
Color image processing method and apparatus for color adjustment during image processing
AssigneeCanon Kabushiki Kaisha
InventorYoshiro Udagawa
Life of this patent
Estimating the term…
Abstract
In a color image processing method, a dark point in a given color image is detected, a color component of the detected dark point is then detected, and a color component other than that of the dark point is corrected in accordance with the detected color component.
Claims28
A color image processing method comprising the steps of:
- detecting a dark point in a color image;
- detecting a color component of the detected dark point;
- supplying a luminance signal other than that of the dark point;
- and
- correcting a color component other than that of the dark point in accordance with the luminance signal and the detected color component.
2 more elements
A color image processing apparatus comprising:
- dark point detecting means for detecting a dark point in a color image;
- dark point color component detecting means for detecting a color component of the detected dark point;
- luminance signal supplying means for supplying a luminance signal other than that of the dark point;
- and
- correcting means for correcting a color component other than that of the dark point in accordance with the luminance signal and the detected color component.
2 more elements
A color image processing method comprising the steps of:
- producing a plurality of types of color signals from a color image;
- inputting one correction value to correct the plurality of color signals;
- and
- correcting the plurality of types of color signals by shifting the level of the signals in accordance with the one correction value.
1 more element
A color image processing apparatus comprising:
- producing means for producing a plurality of types of color signals from a color image;
- inputting means for inputting one correction value to correct the plurality of color signals;
- and
- correcting means for correcting the plurality of types of color signals by shifting the level of the signals in accordance with the one correction value.
1 more element
A color image processing method comprising the steps of:
- detecting a dark point in a color image;
- detecting a color component of the detected dark point;
- detecting a highlight point in the color image;
- detecting a color component of the detected highlight point;
- and
- correcting a color component other than those of the dark point and highlight point in accordance with the detected color components.
3 more elements
A color image processing apparatus comprising:
- dark point detecting means for detecting a dark point in a color image;
- dark point color component detecting means for detecting a color component of the detected dark point;
- highlight point detecting means for detecting a highlight point in the color image;
- highlight point color component detecting means for detecting a color component of the detected highlight point;
- and
- correcting means for correcting a color component other than those of the dark point and highlight point in accordance with the detected color components.
3 more elements
A color image processing method comprising the steps of:
- producing a plurality of types of color signals from a color image;
- inputting one correction value to correct the plurality of color signals;
- correcting the plurality of types of color signals in accordance with the one correction value;
- and
- recording the corrected color signals on a recording medium.
2 more elements
A color image processing apparatus comprising:
- producing means for producing a plurality of types of color signals in a color image;
- inputting means for inputting one correction value to correct the plurality of color signals;
- correcting means for correcting the plurality of types of color signals in accordance with the one correction value;
- and
- recording means for recording the corrected color signals on a recording medium subsequent to correction by said correcting means.
2 more elements
Dependencies are inferred from the claim text.