Color matching and color correction for images forming a panoramic image
AssigneeArcSoft, Inc.
InventorsJunxing Shen, Yushan Huang
Life of this patent
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Abstract
A method for color matching a first image and a second image, wherein a first region of the first image and a second region of the second image overlap, includes removing overlapping pixels in the first and the second regions that have pixel values are too different, generating a first histogram of the first region, generating a second histogram of the second region, determining corresponding pixel values in the first and the second histograms, determining parameters of an optoelectronic conversion function that matches the corresponding pixel values, and color matching the second image to the first image by applying the optoelectronic conversion function with the determined parameters to the second image.
Claims20
A method for a processor to color match a first image and a second image, wherein a first region of the first image and a second region of the second image overlap, the method comprising:
- generating a first histogram of the first region;
- generating a second histogram of the second region;
- determining corresponding pixel values from the first and the second histograms;
- determining at least one parameter of an optoelectronic conversion function (OECF) that best matches the corresponding pixel values;
- and
- color matching the second image to the first image by applying the OECF with the at least one parameter to the second image.
A method for a processor to color match a first image and a second image, wherein a first region of the first image and a second region of the second image overlap, the method comprising:
- removing a percentage of overlapping pixels with the greatest difference in brightness;
- generating a first histogram of the first region and a second histogram of the second region after said removing;
- histogram matching the first and the second histograms to determine corresponding pixel values from the first and the second histograms;
- minimizing a color matching error between the corresponding pixel values, wherein the color matching error is generated from an optoelectronic conversion function (OECF);
- and
- color matching the second image to the first image by applying the OECF to the second image.
Dependencies are inferred from the claim text.