Processing for accurate reproduction of symbols and other high-frequency areas in a color image
First Claim
Patent Images
1. An image processing apparatus comprising:
- histogram calculation means for calculating a histogram that is consonant with an input image;
binary threshold value calculation means for calculating a binary threshold value, based on the histogram, with which a predetermined area in the input image is blurred;
binarization means for binarizing the input image using the binary threshold value; and
calculation means for calculating the color of the predetermined area of the input image based on the results obtained by said binarization means.
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Abstract
In image processing for accurate reproduction of the color of a high-frequency area, a histogram is calculated that is consonant with an input image, and, based on the histogram, there is calculated a binary threshold value with which a predetermined area in the input image is blurred. The input image is binarized using the binary threshold value, and the color of the predetermined area of the input image is calculated based on the results obtained in the binarization.
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Citations
11 Claims
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1. An image processing apparatus comprising:
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histogram calculation means for calculating a histogram that is consonant with an input image;
binary threshold value calculation means for calculating a binary threshold value, based on the histogram, with which a predetermined area in the input image is blurred;
binarization means for binarizing the input image using the binary threshold value; and
calculation means for calculating the color of the predetermined area of the input image based on the results obtained by said binarization means. - View Dependent Claims (2, 3, 4, 5)
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6. An image processing method comprising:
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a histogram calculation step of calculating a histogram that is consonant with an input image;
a binary threshold value calculation step of calculating a binary threshold value, based on the histogram, with which a predetermined area in the input image is blurred;
a binarization step of binarizing the input image using the binary threshold value; and
a calculation step of calculating the color of the predetermined area of the input image based on the results obtained at said binarization step. - View Dependent Claims (7, 8, 9, 10)
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11. A computer-readable storage medium on which stored is a program comprising:
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a code for calculating a histogram that is consonant with an input image;
a code for calculating a binary threshold value, based on the histogram, with which a predetermined area in the input image is blurred;
a code for binarizing the input image using the binary threshold value; and
a code for calculating the color of the predetermined area of the input image based on the results obtained at said binarization.
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Specification