Hand shape recognition apparatus and method
First Claim
1. An apparatus for recognizing a shape of a human hand, comprising:
- an image input unit configured to input an image containing the human hand;
a hand candidate area detection unit configured to detect a hand candidate area from the input image;
a template storage unit configured to store a plurality of template images and a plurality of consistency probability distributions, the template images relating to a plurality of hand shapes, the consistency probability distributions corresponding to the respective template images, each of the consistency probability distributions indicating a probability distribution based on a distribution of first similarities between each of the template images and a plurality of example hand area images each containing a hand shape consistent with the hand shape of the respective template image; and
a hand shape recognition unit configured (1) to calculate second similarities between the hand candidate area image and each of the template images relating to the respective hand shapes, (2) to calculate plural consistency probabilities that each of the second similarities is included in the consistency probability distribution corresponding to each of the template images relating to the respective hand shapes, and (3) to obtain a hand shape most similar to the hand candidate area image based on the plural consistency probabilities.
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Accused Products
Abstract
A similarity calculation unit calculates a similarity between a hand candidate area image and a template image. A consistency probability calculation unit and an inconsistency probability calculation unit use probability distributions of similarities of a case where hand shapes of the template image and the hand candidate area image are consistent with each other and a case where they are not consistent, and calculate a consistency probability and an inconsistency probability of hand shapes between each of the template images and the hand candidate area image. A hand shape determination unit determines a hand shape most similar to the hand candidate area image based on the consistency probability and the inconsistency probability calculated for each hand shape, and outputs it as a recognition result.
33 Citations
10 Claims
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1. An apparatus for recognizing a shape of a human hand, comprising:
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an image input unit configured to input an image containing the human hand;
a hand candidate area detection unit configured to detect a hand candidate area from the input image;
a template storage unit configured to store a plurality of template images and a plurality of consistency probability distributions, the template images relating to a plurality of hand shapes, the consistency probability distributions corresponding to the respective template images, each of the consistency probability distributions indicating a probability distribution based on a distribution of first similarities between each of the template images and a plurality of example hand area images each containing a hand shape consistent with the hand shape of the respective template image; and
a hand shape recognition unit configured (1) to calculate second similarities between the hand candidate area image and each of the template images relating to the respective hand shapes, (2) to calculate plural consistency probabilities that each of the second similarities is included in the consistency probability distribution corresponding to each of the template images relating to the respective hand shapes, and (3) to obtain a hand shape most similar to the hand candidate area image based on the plural consistency probabilities. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for recognizing a shape of a human hand, comprising:
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inputting an image containing the human hand;
detecting a hand candidate area from the input image;
storing a plurality of template images and a plurality of consistency probability distributions, the template images relating to a plurality of hand shapes, the consistency probability distributions corresponding to the respective template images, each of the consistency probability distributions indicating a probability distribution based on a distribution of first similarities between each of the template images and a plurality of example hand area images each containing a hand shape consistent with the hand shape of the respective template image;
(1) calculating second similarities between the hand candidate area image and each of the template images relating to the respective hand shapes;
(2) calculating plural consistency probabilities that each of the second similarities is included in the consistency probability distribution corresponding to each of the template images relating to the respective hand shapes; and
(3) obtaining a hand shape most similar to the hand candidate area image based on the plural consistency probabilities.
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10. A program product for recognizing a shape of a human hand, the program product comprising instructions of:
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inputting an image containing the human hand;
detecting a hand candidate area from the input image;
storing a plurality of template images and a plurality of consistency probability distributions, the template images relating to a plurality of hand shapes, the consistency probability distributions corresponding to the respective template images, each of the consistency probability distributions indicating a probability distribution based on a distribution of first similarities between each of the template images and a plurality of example hand area images each containing a hand shape consistent with the hand shape of the respective template image;
(1) calculating second similarities between the hand candidate area image and each of the template images relating to the respective hand shapes;
(2) calculating plural consistency probabilities that each of the second similarities is included in the consistency probability distribution corresponding to each of the template images relating to the respective hand shapes; and
(3) obtaining a hand shape most similar to the hand candidate area image based on the plural consistency probabilities.
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Specification