发明名称 |
Optical web-based defect detection using intrasensor uniformity correction |
摘要 |
Techniques are described in which an image capture device captures image data from web material. The image data comprises pixel values for the cross-web field of view of the image capture device. An analysis computer includes a computer-readable medium that stores parameters for a plurality of different normalization algorithms to normalize a cross-web background signal for the image capture device to a common desired value. The computer-readable medium further stores coefficients specifying a weighting for each of the plurality of normalization algorithms. The analysis computer computes a normalized value for each of the pixels of the image data as a weighted summation of results from application of at least two of the pixel normalization algorithms using the stored parameters. |
申请公布号 |
US8270701(B2) |
申请公布日期 |
2012.09.18 |
申请号 |
US20100684170 |
申请日期 |
2010.01.08 |
申请人 |
FLOEDER STEVEN P.;RUNDQUIST MATTHEW V.;3M INNOVATIVE PROPERTIES COMPANY |
发明人 |
FLOEDER STEVEN P.;RUNDQUIST MATTHEW V. |
分类号 |
G06K9/00 |
主分类号 |
G06K9/00 |
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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