JP2000125123A5

JP2000125123A5 -

Info

Publication number: JP2000125123A5
Application number: JP1998318425A
Authority: JP
Filing date: 1998-10-20
Publication date: 2004-09-02
Anticipated expiration: 2018-10-20

Description

【０００１】
【発明の属する技術分野】
本発明は、画像データ圧縮機能を搭載したカラー画像を再生する画像形成装置に関し、より詳しくは、絵柄領域を高画質に再生するための像域分離装置を備えた画像形成装置に関する。[0001]
Field of the Invention
The present invention relates to an image forming apparatus for reproducing a color image equipped with an image data compression function, and more particularly to an image forming apparatus provided with an image area separation apparatus for reproducing a picture area with high image quality.

【０００７】
【課題を解決するための手段】
請求項１記載の発明では、原稿をディジタル的に読み取る読取手段と、前記読取手段で読み取った画像データをディジタル的に出力する画像出力手段と、特徴量の異なる複数の像域分離手段と、前記読取手段による非圧縮の読み取り信号から、第１の像域分離手段に基づいて第１版を作像する信号を生成すると同時に、該読み取り信号を圧縮して記憶する記憶手段と、を備え、第２版以後を作像する信号を生成する際には、前記記憶手段に記憶した信号を復元した信号から、第１の像域分離とは異なる像域分離手段に基づいて作像する信号を生成することにより、前記第１の目的を達成する。[0007]
[Means for Solving the Problems]
In the first aspect of the present invention, a reading means for reading an original digitally, and an image output means for outputting the image data read by the reading means digitally, a different image area separation unit characteristic quantity, the Storage means for compressing and storing the read signal at the same time as generating a signal for forming the first plate based on the first image area separation means from the uncompressed read signal by the read means; When generating a signal for imaging the second and subsequent plates, a signal for generating an image based on an image area separation unit different from the first image area separation is generated from the signal obtained by restoring the signal stored in the storage unit. By doing this, the first object is achieved.

【０００８】
請求項２記載の発明では、原稿をディジタル的に読み取る読取手段と、前記読取手段で読み取った画像データをディジタル的に出力する画像出力手段と、閾値処理に基づき画像の領域を判定する像域分離手段と、前記読取手段による非圧縮の読み取り信号から、第１の閾値による像域分離手段に基づいて第１版を作像する信号を生成すると同時に、該読み取り信号を圧縮して記憶する記憶手段と、を備え、第２版以後を作像する信号を生成する際には、前記記憶手段に記憶した信号を復元した信号から、第１の閾値とは異なる閾値による像域分離手段に基づいて作像する信号を生成することにより、前記第２の目的を達成する。[0008]
In the second aspect of the present invention, a reading means for reading an original digitally, and an image output means for outputting digitally the image data read by the reading means, determines image segmentation regions of the image based on the threshold processing Storage means for compressing and storing the read signal at the same time as generating a signal for forming the first plate based on the image area separation means with the first threshold value from the means and the uncompressed read signal by the read means And, when generating a signal for imaging the second and subsequent versions, the signal stored in the storage means is restored from the signal based on the image area separation means using a threshold different from the first threshold. The second object is achieved by generating a signal to be imaged.

Claims

Reading means for reading a document digitally;
An image output means for outputting digitally the image data read by the reading means,
A plurality of image area separation means having different feature quantities;
Storage means for compressing and storing the read signal while generating a signal for forming the first plate based on the first image area separation means from the uncompressed read signal by the reading means;
When generating a signal for imaging the second and subsequent versions, a signal for imaging based on an image area separation unit different from the first image area separation is generated from the signal obtained by restoring the signal stored in the storage unit. A color image forming apparatus characterized by generating.

Reading means for reading a document digitally;
An image output means for outputting digitally the image data read by the reading means,
An image area separation unit that determines an area of an image based on threshold processing;
Storage means for compressing and storing the read signal at the same time as generating a signal for imaging the first plate from the uncompressed read signal by the read means based on the image area separation means with the first threshold value; Equipped
When generating a signal for imaging the second or later version, from the signal obtained by restoring the signal stored in the storage unit, a signal for imaging based on the image area separation unit with a threshold different from the first threshold is used. A color image forming apparatus characterized by generating.

The color image forming apparatus according to claim 1 or 2, wherein the image formation of the first plate is a black plate.

2. A color image forming apparatus according to claim 1, wherein the image area is determined by a plurality of image area separation means.

5. A color image forming apparatus according to claim 4, wherein one of the image area separating means for judging the pattern judges the pattern area from the presence or absence of halftone dots.

5. A color image forming apparatus according to claim 4, wherein one of the image area separating means for judging the pattern judges the pattern area from the presence or absence of the white background.