发明名称 |
Image processing of isolated pixels, and method, apparatus and facsimile incorporating such processing |
摘要 |
Outline vectors representing an arrangement of pixels of a binary image obtained by a binary image obtaining unit are extracted by an outline extractor. From the extracted outline vector, isolated points are extracted. These isolated points are stored in an isolated point data generator 7 as information indicative of the position of isolated point. The outline vectors other than the isolated points are stored in the vector generator 3 as vector data. When a binary image is reproduced, the stored position information of the isolated points is developed to produce vector data by the isolated point data developer 8. Accordingly, since the isolated points are stored not in the form of outline vectors, but position information, the storage capacity for storing the outline vectors can be small. This construction is effective in halftone image in particular.
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申请公布号 |
US5515179(A) |
申请公布日期 |
1996.05.07 |
申请号 |
US19930171176 |
申请日期 |
1993.12.22 |
申请人 |
CANON KABUSHIKI KAISHA |
发明人 |
YAMAKAWA, JUNICHI;ISHIDA, YOSHIHIRO |
分类号 |
G09G5/36;G06T3/00;G06T3/40;G06T9/20;(IPC1-7):H04N1/40 |
主分类号 |
G09G5/36 |
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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