发明名称 |
IMPROVED METHOD FOR IMAGE BINARIZATION |
摘要 |
A method for binarizing a gray-level input image including a plurality of pixels having respective gray-level values. A lower threshold and an upper threshold are determined. A first binary value is assigned to the pixels in the gray-level image having gray-level values above the upper threshold, and a second binary value is assigned to the pixels in the gray-level image having gray-level values below the lower threshold. The pixels in an intermediate group having gray-level values between the lower and upper thresholds are processed so as to determine optimal assignments of the pixels in the intermediate group to the first and second binary values. |
申请公布号 |
EP1269394(A4) |
申请公布日期 |
2006.11.22 |
申请号 |
EP20010908074 |
申请日期 |
2001.02.21 |
申请人 |
INTERNATIONAL BUSINESS MACHINES CORPORATION |
发明人 |
ZLOTNICK, AVIAD |
分类号 |
G06T5/00;G06K9/38;H04N1/40;H04N1/403 |
主分类号 |
G06T5/00 |
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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