IMAGE SORTING APPARATUS
First Claim
1. An image sorting apparatus comprising:
- an image inputting unit that inputs an image;
a distribution function preparing unit that prepares a distribution function of pixel values of the image;
a describing unit that performs series expansion on the distribution function by using base functions that form a complete set and are orthogonal to each other due to different weights in a distribution area and describing the distribution function by expansion coefficients,an evaluating unit that evaluates features of the shape of the distribution function based on the expansion coefficients, anda sorting unit that sorts the image to images of at least two categories based on results of the evaluation.
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Accused Products
Abstract
An image sorting apparatus provided with an image inputting unit that inputs an image; a distribution function preparing unit that prepares a distribution function of pixel values of the image; a describing unit that performs series expansion on the distribution function by using base functions that form a complete set and are orthogonal to each other due to different weights in a distribution area and describing the distribution function by expansion coefficients, an evaluating unit that evaluates features of the shape of the distribution function based on the expansion coefficients, and a sorting unit that sorts the image to images of at least two categories based on results of the evaluation.
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Citations
20 Claims
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1. An image sorting apparatus comprising:
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an image inputting unit that inputs an image; a distribution function preparing unit that prepares a distribution function of pixel values of the image; a describing unit that performs series expansion on the distribution function by using base functions that form a complete set and are orthogonal to each other due to different weights in a distribution area and describing the distribution function by expansion coefficients, an evaluating unit that evaluates features of the shape of the distribution function based on the expansion coefficients, and a sorting unit that sorts the image to images of at least two categories based on results of the evaluation. - View Dependent Claims (2, 3, 4, 10, 11)
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5. The image sorting apparatus comprising:
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an image inputting unit that inputs an image; an edge image preparing unit that prepares an edge image concerning edge components of the image; a distribution function preparing unit that prepares a distribution function of pixel values of the edge image; a describing unit that performs series expansion on the distribution function by using base functions that form a complete set and are orthogonal to each other due to different weights in a distribution area and describing the distribution function by expansion coefficients, an evaluating unit that evaluates features of the shape of the distribution function based on the expansion coefficients, and a sorting unit that sorts the image to images of at least two categories based on results of the evaluation. - View Dependent Claims (6, 7, 8, 9, 18, 19)
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12. An image sorting apparatus comprising:
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an image inputting unit that inputs an image; a distribution function preparing unit that prepares a distribution function of pixel values of the image, a describing unit that performs series expansion on the distribution function by using base functions comprised of an even function group and an odd function group that form a complete set and are orthogonal to each other and describing the distribution function by expansion coefficients, a physical quantity calculating unit that gives even quantum numbers (0, 2, . . . ) and odd quantum numbers (1, 3, . . . ) to function groups belonging to subgroups having same properties concerning even functions and odd functions among the base function groups and calculating a physical quantity of the sum of products of the expansion coefficients and the quantum numbers given to each for all expansion coefficients; an evaluating unit that evaluates features of the shape of the distribution function based on the physical quantity, and a sorting unit that sorts the image to images of at least two categories based on results of the evaluation. - View Dependent Claims (13, 14, 15, 16, 17, 20)
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Specification