Method for brightness equalization of various images
First Claim
Patent Images
1. A method for brightness equalization of a plurality of images, the method comprising:
- receiving at least two input images;
composing the at least two input images into a single composite image;
setting a correction area corresponding to each input image in the composite image, and calculating a brightness histogram of each correction area;
calculating a representative value of at least one modal in the brightness histogram, and grouping a modal of each correction area based on the representative value;
calculating a correction target value of each group based on a representative value of modals grouped into each group;
calculating a corrected value by subtracting the representative value of modals of each group of each correction area from the correction target value of each group; and
correcting brightness by adding the corrected value to a pixel value of each group of each correction area.
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Abstract
The present invention provides a method for brightness equalization of a plurality of images to equalize brightness when composing, into a single image, a plurality of images acquired from a plurality of cameras.
4 Citations
16 Claims
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1. A method for brightness equalization of a plurality of images, the method comprising:
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receiving at least two input images; composing the at least two input images into a single composite image; setting a correction area corresponding to each input image in the composite image, and calculating a brightness histogram of each correction area; calculating a representative value of at least one modal in the brightness histogram, and grouping a modal of each correction area based on the representative value; calculating a correction target value of each group based on a representative value of modals grouped into each group; calculating a corrected value by subtracting the representative value of modals of each group of each correction area from the correction target value of each group; and correcting brightness by adding the corrected value to a pixel value of each group of each correction area. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for brightness equalization of a plurality of images, the method comprising:
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receiving at least two input images; setting a correction area in each input image, and calculating a brightness histogram of each correction area; calculating a representative value of at least one modal in the brightness histogram, and grouping a modal of each correction area based on the representative value; calculating a correction target value of each group based on a representative value of modals grouped into each group; calculating a corrected value by subtracting the representative value of modals of each group of each correction area from the correction target value of each group; correcting brightness by adding the corrected value to a pixel value of each group of each correction area, and creating at least two corrected images; and composing the at least two corrected images into a single composite image. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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Specification