Abstract
A facsimile (FAX) signal processing system designed for filtering documents with printed Chinese characters is described. Filtering algorithms are applied to remove noise corrupting the image scanned by the FAX machine and to preserve the edges. A total of six filtering algorithms have been chosen for investigation, namely, weighted average filter, separable median filter, median with checking filter, Lee's filter, gradient inverse filter, and rotating variance filter. Documents containing Chinese characters are scanned and then stored in the RAM of a personal computer. Random noise is then added, and filtering performed. Experimental results show that all of the six algorithms are capable of removing some of the noise. However, the median filter demonstrated the best noise-removing and edge-preserving capabilities, speed of operation, and ease of implementation for both small- and large-size Chinese characters.
Original language | English |
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Title of host publication | 90 IEEE Reg 10 Conf Comput Commun Syst IEEE TENCON 91 |
Publisher | Publ by IEEE |
Pages | 314-318 |
Number of pages | 5 |
ISBN (Print) | 0879425563 |
Publication status | Published - 1 Jan 1991 |
Externally published | Yes |
Event | 1990 IEEE Region 10 Conference on Computer and Communication Systems - IEEE TENCON '90 - , Hong Kong Duration: 24 Sept 1990 → 27 Sept 1990 |
Conference
Conference | 1990 IEEE Region 10 Conference on Computer and Communication Systems - IEEE TENCON '90 |
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Country/Territory | Hong Kong |
Period | 24/09/90 → 27/09/90 |
ASJC Scopus subject areas
- General Engineering