Feature amount generation device, feature amount generation method, and non-transitory medium saving program
First Claim
1. A feature amount generation device comprising:
- a feature point detecting unit configured to detect a feature point from an input image;
a pixel information generating unit configured to generate pixel information from pixel values of surroundings of the feature point in the input image;
a feature point pixel information distribution generating unit configured to generate a first distribution of pixel information of a first region including the feature point;
a sub-feature point detecting unit configured to detect sub-feature points which are feature points in the surroundings of the feature point;
a sub-feature point pixel information distribution generating unit configured to generate second distributions of pixel information of second regions including the sub-feature points; and
a feature amount generating unit configured to generate a feature amount at the feature point based on the first distribution and the second distributions,wherein the sub-feature point pixel information distribution generating unit sets points of which feature evaluation values are lower than a feature evaluation value of the feature point detected by the feature point detecting unit as candidates for the sub-feature points.
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Abstract
A feature amount generation device includes a feature point detecting unit which detects a feature point from an input image, a pixel information generating unit which generates pixel information from pixel values of the surroundings of the feature point in the input image, a feature point pixel information distribution generating unit which generates a first distribution of pixel information of a first region including the feature point, a sub-feature point detecting unit which detects sub-feature points that are feature points in the surroundings of the feature point, a sub-feature point pixel information distribution generating unit which generates second distributions of pixel information of second regions including the sub-feature points, and a feature amount generating unit which generates a feature amount at the feature point based on the first distribution and the second distributions.
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Citations
13 Claims
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1. A feature amount generation device comprising:
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a feature point detecting unit configured to detect a feature point from an input image; a pixel information generating unit configured to generate pixel information from pixel values of surroundings of the feature point in the input image; a feature point pixel information distribution generating unit configured to generate a first distribution of pixel information of a first region including the feature point; a sub-feature point detecting unit configured to detect sub-feature points which are feature points in the surroundings of the feature point; a sub-feature point pixel information distribution generating unit configured to generate second distributions of pixel information of second regions including the sub-feature points; and a feature amount generating unit configured to generate a feature amount at the feature point based on the first distribution and the second distributions, wherein the sub-feature point pixel information distribution generating unit sets points of which feature evaluation values are lower than a feature evaluation value of the feature point detected by the feature point detecting unit as candidates for the sub-feature points. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A feature amount generation method comprising:
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a step of detecting a feature point from an input image; a step of generating pixel information from pixel values of surroundings of the feature point in the input image; a step of generating a first distribution of pixel information of a first region including the feature point; a step of detecting sub-feature points which are feature points in the surroundings of the feature point; a step of generating second distributions of pixel information of second regions including the sub-feature points; a step of setting points of which feature evaluation values are lower than a feature evaluation value of the feature point detected in the step of detecting the feature point from the input image as candidates for the sub-feature points; and a step of generating a feature amount at the feature point based on the first distribution and the second distributions.
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13. A non-transitory medium saving a program for causing a computer to perform:
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a step of detecting a feature point from an input image; a step of generating pixel information from pixel values of surroundings of the feature point in the input image; a step of generating a first distribution of pixel information of a first region including the feature point; a step of detecting sub-feature points which are feature points in the surroundings of the feature point; a step of generating second distributions of pixel information of second regions including the sub-feature points; a step of setting points of which feature evaluation values are lower than a feature evaluation value of the feature point detected in the step of detecting the feature point from the input image as candidates for the sub-feature points; and a step of generating a feature amount at the feature point based on the first distribution and the second distributions.
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Specification