Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1994-05-31
1996-03-05
Vu, Kim Yen
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
358464, 382263, H04N 1407
Patent
active
054972493
ABSTRACT:
An image data processing apparatus, in particular, an apparatus which performs filter processing on original image data, wherein an image data statistical processing unit is used to extract and statistically processing the characteristics of picture element distribution in the picture expressed by the original image data, an image data decision unit is used to decide on whether the original image data belongs to a first kind or second kind of picture based on the results of the statistical processing, and a filter selection unit is used to designate the filter size to be used by a filter processing unit so that it is possible to automatically discriminate between a first kind of picture which is suited to sharpening processing (e.g., a landscape) and a second kind of picture which is suited to smoothing processing (e.g., a portrait) and possible to automatically select the optimum filter.
REFERENCES:
patent: 4637054 (1987-01-01), Hashim
patent: 5314667 (1992-07-01), Suzuki
patent: 5339365 (1994-08-01), Kawai et al.
patent: 5381490 (1995-01-01), Shin
Kawano Michiko
Koizumi Taeko
Fujitsu Limited
Vu Kim Yen
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