发明名称 |
METHOD AND APPARATUS FOR MEASURING SHAPE, METHOD AND INSTRUMENT FOR MEASUREMENT, AND METHOD AND DEVICE FOR EXPOSURE |
摘要 |
PROBLEM TO BE SOLVED: To measure the information on the shape of a specific area in an image with accuracy. SOLUTION: A border extracting device extracts the information on the positions of five or more estimated border points of the specific area which is considered to originally have an elliptic shape in the image based on the feature of the image pattern of the specific area (step 105). Then an ellipse approximating device calculates an ellipse approximated to the original elliptic shape of the specific area by considering that the specific area originally has the elliptic shape based on the extracted information on the positions of the estimated border points (steps 106 and 107). Consequently, the information on the shape of the specific area can be measured with accuracy. COPYRIGHT: (C)2003,JPO |
申请公布号 |
JP2003194529(A) |
申请公布日期 |
2003.07.09 |
申请号 |
JP20010398962 |
申请日期 |
2001.12.28 |
申请人 |
NIKON CORP |
发明人 |
SUGIHARA TARO |
分类号 |
G01B11/24;G03F7/20;G03F7/22;H01L21/027;(IPC1-7):G01B11/24 |
主分类号 |
G01B11/24 |
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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