Title:
画像処理装置および画像処理方法
Document Type and Number:
Japanese Patent JP4057754
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To enhance a storage efficiency in the case of filing by increasing a compression ratio when display image data are coded in the image processing unit that stores image data with resolution lower than that of main image data and uses the image data with the low resolution for the display image data. SOLUTION: A resolution conversion means converts resolution of multi-value image data from an image input means 10 into low resolution separately from a main image, a binary means 14 binarizes the multi-value image data with low resolution, a coding means 16 encodes the binarized data, a storage means 17 stores the coded data, a decoding means 19 decodes the coded data as the binary image data and gives the data to a display device 21 or the like, in the image processing unit. A 1st gradation conversion means 12 that converts the density of a medium density area of the multi-value image data into required high or low density is provided to a pre-stage of the resolution conversion means 13.
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Inventors:
Naoki Takahashi
Kazuyuki Murata
Yamaguchi Taketo
Hideyuki Kuwano
Yuji Okada
Joji Tanaka
Kenji Kutomi
Kazuyuki Murata
Yamaguchi Taketo
Hideyuki Kuwano
Yuji Okada
Joji Tanaka
Kenji Kutomi
Application Number:
JP34587099A
Publication Date:
March 05, 2008
Filing Date:
December 06, 1999
Export Citation:
Assignee:
Matsushita Electric Industrial Co., Ltd
International Classes:
H04N1/387; G06T3/40; G06T5/00; H04N1/407; H04N1/41
Domestic Patent References:
| JP6118610A | ||||
| JP6268871A | ||||
| JP3230681A | ||||
| JP9233338A |
Attorney, Agent or Firm:
Toyoake Fukui