发明名称 |
Image processing system and image processing method for aerial photograph |
摘要 |
In order to increase the recognition rate of a shadow area contained in the image of an aerial photograph, a central control portion performs the processes of: comparing a shadow-produced angle with the angles of segments constituting the polygons generated by a polygon-generating portion to judge whether or not there are the segments coinciding with the shadow-produced angle, of the segments constituting the polygon; judging whether or not the ratio of the length of the segment constituting the shadow to the length of the segment constituting the feature coincides with a shadow-extended ratio; judging whether or not the color tone of the area surrounded by the segments constituting the shadow is darker than that of all the adjacent polygons; and identifying the area surrounded by the segments constituting the shadow as “shadow area.” The polygon of the identified shadow area is generated.
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申请公布号 |
US7809191(B2) |
申请公布日期 |
2010.10.05 |
申请号 |
US20070656002 |
申请日期 |
2007.01.22 |
申请人 |
HITACHI SOFTWARE ENGINEERING CO., LTD. |
发明人 |
FURUKADO KAZUHIRO |
分类号 |
G06K9/34;G06K9/20;G06K9/36;G06K9/40;G06T1/00;G06T11/60;G09B29/00 |
主分类号 |
G06K9/34 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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