Road sign determination apparatus, method and program
First Claim
1. A road sign determination apparatus comprising:
- an image recognition unit which executes image recognition of image data of a road sign with using a prepared template; and
a determination unit which determines a road sign corresponding to the image data based on a result of the image recognition,wherein the template includes a basic template formed by a figure formed by combining a circle of a sign frame and a single arrow.
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Abstract
A road sign determination apparatus executes image recognition of image data of a road sign shot with using a camera mounted on a field survey vehicle to determine the road sign. Particularly, it is preferably used for determination of a sign “DO NOT ENTER OTHER THAN DESIGNED DIRECTION”. The image recognition is executed by matching of a prepared template and the image data of the road sign. The template used for the image recognition includes a basic template formed by a figure formed by combining a circle of a sign frame and a single arrow. The outline of the road sign subjected to the determination can be obtained by the first matching with using the basic template. In accordance with the result of the first matching, the used sign template is limited. Substantially, the second matching is executed. Thereby, the determination process can be efficiently and rapidly executed.
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Citations
7 Claims
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1. A road sign determination apparatus comprising:
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an image recognition unit which executes image recognition of image data of a road sign with using a prepared template; and a determination unit which determines a road sign corresponding to the image data based on a result of the image recognition, wherein the template includes a basic template formed by a figure formed by combining a circle of a sign frame and a single arrow. - View Dependent Claims (2, 3, 4, 5)
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6. A road sign determination method comprising:
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an image recognition step which executes image recognition of image data of a road sign with using a prepared template; and a determination step which determines a road sign corresponding to the image data based on a result of the image recognition, wherein the template includes a basic template formed by a figure formed by combining a circle of a sign frame and a single arrow.
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7. A computer program product in a computer-readable medium executed in a road sign determination apparatus, the computer program product making a computer function as:
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an image recognition unit which executes image recognition of image data of a road sign with using a prepared template; and a determination unit which determines a road sign corresponding to the image data based on a result of the image recognition, wherein the template includes a basic template formed by a figure formed by combining a circle of a sign frame and a single arrow.
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Specification