发明名称 |
IMAGE RECOGNITION DEVICE, IMAGE RECOGNITION METHOD, PROGRAM, AND RECORDING MEDIUM |
摘要 |
An image recognition device includes an edge direction evaluation unit configured to evaluate a direction of an edge at each coordinate by assigning points to the coordinate when a deviation amount between a direction of an outline of an abundance ratio higher than a predetermined abundance ratio threshold value among directions of an outline of a character available for the vehicle number plate and the direction of the edge at each coordinate of the image is less than a predetermined deviation amount threshold value and a vehicle number plate region extraction unit configured to extract a region of the vehicle number plate from the image based on a distribution of the points assigned by the edge direction evaluation unit. |
申请公布号 |
US2016132742(A1) |
申请公布日期 |
2016.05.12 |
申请号 |
US201314442715 |
申请日期 |
2013.03.27 |
申请人 |
Mitsubishi Heavy Industries, Ltd |
发明人 |
KOJIMA Yohei;SUGIMOTO Kiichi;OKAZAKI Takuma;NAKAO Kenta |
分类号 |
G06K9/32;G06T7/00 |
主分类号 |
G06K9/32 |
代理机构 |
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代理人 |
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主权项 |
1. An image recognition device for extracting a region of a vehicle number plate from an image, the image recognition device comprising:
an edge direction evaluation unit configured to evaluate a direction of an edge at each coordinate by assigning points to the coordinate when a deviation amount between a direction of an outline of an abundance ratio higher than a predetermined abundance ratio threshold value among directions of an outline of a character available for the vehicle number plate and the direction of the edge at each coordinate of the image is less than a predetermined deviation amount threshold value; and a vehicle number plate region extraction unit configured to extract the region of the vehicle number plate from the image based on a distribution of the points assigned by the edge direction evaluation unit. |
地址 |
Tokyo JP |