发明名称 |
Multi-valved image processing apparatus and method |
摘要 |
Apparatus and method for processing multi-valved images includes an erosion filter and a dilation filter. The erosion filter determines the frequency with which a pixel having the same value as a pixel at a first check position of a first window appears in the first window. If the frequency of appearance is equal to or less than a value predetermined for the pixel value of the first check position, the pixel value at the first check position is made null. This operation is recursively executed while scanning a multi-valved image with the first window. The dilation filter replaces any null pixel value at a second check position of a second window with a selected non-null pixel value in the second window. The selected non-null value has the maximum frequency of appearance in the second window. This operation is also recursively executed while scanning the multi-valved image with the second window.
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申请公布号 |
US4866785(A) |
申请公布日期 |
1989.09.12 |
申请号 |
US19880212033 |
申请日期 |
1988.06.23 |
申请人 |
INTERNATIONAL BUSINESS MACHINES CORPORATION |
发明人 |
SHIBANO, KOHJI |
分类号 |
G06T5/00;G06T5/20;G06T5/30 |
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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