发明名称 |
Autothresholding of noisy images |
摘要 |
The present invention provides to image processing methods that include a method of selecting an optimal threshold value (t<SUB>o</SUB>) for an image comprising the steps of: obtaining an image; selecting a test segment of the said image; determining the mean feature size (S) of features appearing in the test segment at each of a plurality of threshold values (t), so as to produce mean feature size data (S(t)); selecting a relevant subset of the mean feature size data (S(t)); and determining an optimal threshold value (t<SUB>o</SUB>) as a function of said subset of the mean feature size data. The present invention additionally provides methods of thresholding an image to produce a binary image by application of the optimal threshold value (t<SUB>o</SUB>) determined according to the methods of the present invention.
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申请公布号 |
US6961476(B2) |
申请公布日期 |
2005.11.01 |
申请号 |
US20010917545 |
申请日期 |
2001.07.27 |
申请人 |
3M INNOVATIVE PROPERTIES COMPANY |
发明人 |
ATKINSON MATTHEW ROBERT COLE |
分类号 |
G06K9/38;G06T5/00;H04N1/403;(IPC1-7):G06T1/00 |
主分类号 |
G06K9/38 |
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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