Image processing device and image processing program for determining similarity factors of pixels
First Claim
Patent Images
1. An image processing device, comprising:
- a similarity factor calculating portion locally comparing pixels that compose an image so as to calculate a similarity factor of the pixels in a predetermined direction;
an analyzing portion analyzing structure of the image in accordance with the similarity factor calculated by the similarity factor calculating portion, whereinthe similarity factor calculating portion calculates the similarity factor of the pixels in accordance with positions of the pixels in the image;
the similarity factor includes a value determined by performing a weighted addition of “
a similarity factor element in same colors obtained by comparing pixels of same colors” and
“
a similarity factor element in different colors obtained by comparing pixels of different colors”
; and
the similarity factor calculating portion changes a weighting coefficient for the weighted addition in accordance with the positions of the pixels whose similarity factor is to be calculated, and calculates the similarity factor thereof.
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Abstract
An image processing device according to the present invention includes a similarity factor calculating portion locally comparing pixels that compose an image so as to calculate a similarity factor of the pixels in a predetermined direction, and includes an analyzing portion analyzing the structure of the image in accordance with the similarity factor calculated by the similarity factor calculating portion. In particular, the similarity factor calculating portion selects and changes pixels to be compared in accordance with color shift of the image to calculate the similarity factor. As a result, a similarity factor can be calculated with suppressing influence of color shift.
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Citations
16 Claims
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1. An image processing device, comprising:
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a similarity factor calculating portion locally comparing pixels that compose an image so as to calculate a similarity factor of the pixels in a predetermined direction; an analyzing portion analyzing structure of the image in accordance with the similarity factor calculated by the similarity factor calculating portion, wherein the similarity factor calculating portion calculates the similarity factor of the pixels in accordance with positions of the pixels in the image; the similarity factor includes a value determined by performing a weighted addition of “
a similarity factor element in same colors obtained by comparing pixels of same colors” and
“
a similarity factor element in different colors obtained by comparing pixels of different colors”
; andthe similarity factor calculating portion changes a weighting coefficient for the weighted addition in accordance with the positions of the pixels whose similarity factor is to be calculated, and calculates the similarity factor thereof. - View Dependent Claims (2, 3, 4, 5)
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6. An image processing device, comprising:
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a similarity factor calculating portion locally comparing pixels that compose an image so as to calculate a similarity factor of the pixels in a predetermined direction; an analyzing portion analyzing structure of the image in accordance with the similarity factor calculated by the similarity factor calculating portion, wherein the similarity factor calculating portion calculates the similarity factor of the pixels in accordance with positions of the pixels in the image; the similarity factor calculating portion calculates a similarity factor including a weighted addition value of “
a similarity factor element in same colors obtained by comparing pixels of same colors” and
“
a similarity factor element in different colors obtained by comparing pixels of different colors”
in a region containing the center of the image; andthe similarity factor calculating portion calculates a similarity factor that does not contain the similarity factor element in different colors, but contains the similarity factor element in same colors in a region other than that containing the center of the image.
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7. An image Processing device, comprising:
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a similarity factor calculating portion locally comparing pixels that compose an image so as to calculate a similarity factor of the pixels in a predetermined direction; an analyzing portion analyzing structure of the image in accordance with the similarity factor calculated by the similarity factor calculating portion, wherein the similarity factor calculating portion calculates the similarity factor of the pixels in accordance with positions of the pixels in the image; and the similarity factor calculating portion changes relative location of “
a considered pixel whose similarity factor is to be calculated” and
“
a reference pixel that is referenced when calculating the similarity factor”
in accordance with position of the considered pixel. - View Dependent Claims (8, 9, 10)
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11. An image processing device, comprising:
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a similarity factor calculating portion locally comparing pixels that compose an image so as to calculate a similarity factor of the pixels in a predetermined direction; and a pixel value calculating portion referencing the pixels that compose the image so as to obtain a value of a new pixel, wherein the similarity factor calculating portion calculates the similarity factor of the pixels in accordance with positions of the pixels in the image, and the pixel value calculating portion changes relative location of “
a considered pixel from which the new value is to be calculated” and
“
a reference pixel that is referenced when calculating the new value”
in accordance with position of the considered pixel and the similarity factor, and calculates the new value of the considered pixel. - View Dependent Claims (12, 13, 14, 15)
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16. A computer readable medium storing an image processing program, causing a computer to perform the functions of:
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locally comparing pixels that compose an image with a similarity factor calculating portion so as to calculate a similarity factor of the pixels in a predetermined direction; and referencing the pixels that compose the image with a pixel value calculating portion so as to obtain a value of a new pixel, wherein the similarity factor calculating portion calculates the similarity factor of the pixels in accordance with positions of the pixels in the image, and the pixel value calculating portion changes relative location of “
a considered pixel from which the new value is to be calculated” and
“
a reference pixel that is referenced when calculating the new value”
in accordance with position of the considered pixel and the similarity factor, and calculates the new value of the considered pixel.
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Specification