发明名称 |
METHOD AND DEVICE FOR OBTAINING INSPECTION POINT POSITION |
摘要 |
PROBLEM TO BE SOLVED: To find the position of an arbitrary point in an inspection area included in the plane of a structure to be inspected on the plane. SOLUTION: An actual size coordinate system is set by installing four indexes on the plane structure 4. Two kinds of wide-area and narrow-area digital images of the plane structure are obtained by a camera 1 and a film reader 2. A data process part 3 calculates a first projection conversion coefficient from the pixel coordinates and actual size coordinates of the four indexes in the wide-area image. A second projection conversion coefficient is calculated on the basis of coordinate information on two corresponding places in the narrow-area and wide-area images. For the narrow-area image, an arbitrary point to be inspected is inputted and coordinate conversion is performed by using the first projection conversion coefficient and second projection conversion coefficient.
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申请公布号 |
JP2000121358(A) |
申请公布日期 |
2000.04.28 |
申请号 |
JP19980297298 |
申请日期 |
1998.10.19 |
申请人 |
ASIA AIR SURVEY CO LTD |
发明人 |
ODA KAZUO;KONDO TAKESHI;OHATA MASAYOSHI;DOIHARA TAKESHI |
分类号 |
G01C15/00;G01B11/00;G06T1/00;G06T7/60;(IPC1-7):G01C15/00 |
主分类号 |
G01C15/00 |
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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