发明公开
- 专利标题： METHOD OF DETERMINING AN ILLUMINATED SURFACE
- 专利标题（中）： 方法确定照射面
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申请号： EP00903057.8申请日： 2000-01-10
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公开(公告)号： EP1155284A1公开(公告)日： 2001-11-21
- 发明人: JOHANSSON, Per-Ake , HANSSON, Peter
- 申请人： STFI
- 申请人地址： Box 5604 114 86 Stockholm SE
- 专利权人： STFI
- 当前专利权人： STFI
- 当前专利权人地址： Box 5604 114 86 Stockholm SE
- 代理机构： Onn, Thorsten
- 优先权： SE9900276 19990128
- 国际公布： WO0045125 20000803
- 主分类号： G01B11/24
- IPC分类号： G01B11/24 ; G01B11/30
摘要：
Method of determining a surface illuminated by incident light. First the intensity (I1(x,y)) of light reflected from the surface is recorded in a first image of the surface. After this, the intensity (I2(x,y)) of light reflected from the surface is recorded in a second image of the surface, taken at a different angle of illumination. Only the diffusely reflected light is recorded. The difference between the recorded intensities of the first and the second images is determined to obtain a representation that emphasises variations in gradient of the surface. This representation is further processed by signal-adapted integration to a topographic description, that is, a height function of the surface.
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