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US 6,333,997 B1Granted
Image recognizing apparatus
AssigneeKabushiki Kaisha Toshiba
InventorsKazuyo Hashiya, Osamu Kuratomi
Life of this patent
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Abstract
A parameter input section inputs, as parameters, the luminance difference between a to-be-recognized object P and its background, conveyance conditions, etc. An endpoint detecting section uses the parameters to detect a plurality of border points between the object P and the background, without being influenced by external noise or a stain on the object P. A length detecting section detects vertical and horizontal lengths of the object P, and an entire-object position determining section determines the position of the entire object P using the lengths detected by the section. A recognizing section compares an image input by an image input section, with reference image data stored in a reference image data memory, thereby recognizing the object P.
Claims16
An image recognizing apparatus comprising:
- image input means for inputting an image of a to-be-recognized object;
- endpoint detecting means for detecting, on the basis of the image input by the image input means, a plurality of pairs of endpoints which indicate border points between the to-be-recognized object and a background thereof, the pairs of endpoints existing on vertical and horizontal lines that pass through the to-be-recognized object;
- length detecting means for detecting vertical and horizontal lengths of the to-be-recognized object on th e basis of endpoint information supplied from the endpoint detecting means;
- comparing means for comparing length information supplied from the length detecting means with values falling within a range depending on an ideal length x and a skew range θ for determining endpoint pair information;
- position determining means for determining a position of an entire portion of the to-be-recognized object on the basis of the endpoint pair information supplied from the comparing means;
- and
- recognizing means for comparing the image input by the image input means with a reference image on the basis of the position determined by the position determining means, thereby recognizing the image input by the image input means.
4 more elements
An image recognizing apparatus comprising:
- image input means for inputting an image of a to-be-recognized object;
- endpoint detecting means for detecting, on the basis of the image input by the image input means, a plurality of pairs of endpoints which indicate border points between the to-be-recognized object and a background thereof, the pairs of endpoints existing on vertical and horizontal lines that pass through the to-be-recognized object;
- length detecting means for detecting vertical and horizontal lengths of the to-be-recognized object on the basis of endpoint information supplied from the endpoint detecting means;
- comparing means for comparing length information supplied from the length detecting means with values falling within a range depending on an ideal length x and a skew range θ for determining endpoint pair information;
- determining means for determining whether or not a position of the to-be-recognized object can be detected, on the basis of the endpoint pair information supplied from the comparing means;
- and
- accumulating means for accumulating endpoint pair information concerning the to-be-recognized object if the determining means determines that the position of the to-be-recognized object cannot be detected;
- display means for displaying a determination result of the determining means if the result indicates that the position of the to-be-recognized object cannot be detected;
- abnormal portion estimating means for estimating an abnormal portion of the image recognizing apparatus on the basis of the endpoint information accumulated by the accumulating means;
- position determining means for determining the position of the to-be-recognized object if the determining means determines that the position of the to-be-recognized object can be detected;
- and
- recognizing means for comparing the image input by the image input means with a reference image on the basis of the position determined by the position determining means, thereby recognizing the image input by the image input means.
9 more elements
An image recognizing apparatus comprising:
- image input means for inputting an image of a to-be-recognized object;
- parameter input means for inputting, as parameters, information and conveyance conditions concerning the to-be-recognized object;
- endpoint detecting means for detecting, on the basis of the image input by the image input means, a plurality of pairs of endpoints which indicate border points between the to-be-recognized object and a background thereof, the pairs of endpoints existing on vertical and horizontal lines that pass through the to-be-recognized object;
- detection information storage means for storing endpoint pair information supplied from the endpoint detecting means;
- conveyance state judging means for judging a conveyance state of the to-be-recognized object on the basis of the information stored in the detection information storing means;
- parameter updating means for updating parameters input by the parameter input means on the basis of a judging result of the conveyance state judging means;
- length detecting means for detecting vertical and horizontal lengths of the to-be-recognized object on the basis of endpoint information supplied from the endpoint detecting means;
- comparing means for comparing length information supplied from the length detecting means with values falling within a range depending on an ideal length x and a skew range θ for determining endpoint pair information;
- position determining means for determining a position of the to-be-recognized object on the basis of the endpoint pair information supplied from the length detecting means;
- and
- recognizing means for comparing the image input by the image input means with a reference image on the basis of the position determined by the position determining means, thereby recognizing the image input by the image input means.
8 more elements
Dependencies are inferred from the claim text.