JP2012244191A5

JP2012244191A5 -

Info

Publication number: JP2012244191A5
Application number: JP2011108684A
Authority: JP
Filing date: 2011-05-13
Publication date: 2013-04-11
Anticipated expiration: 2031-05-13

Description

請求項１に係る発明は、ハーフトーン処理されたＮ値画像に重ねられ、且つ注目画素を中心として予め設定される領域内に含まれるイエロー、マジェンダ、シアン及び黒の画素値がオフである第１の画素数と、前記領域内に含まれるイエロー、マジェンダ及びシアンの少なくとも１つの画素値を有する画素が前記領域内に含まれる黒画素と重なる第２の画素数と、前記ハーフトーン処理されたＮ値画像内の前記注目画素に対応する画素のイエロー、マジェンダ及びシアンの画素値のオン又はオフの状態とに基づいて、前記注目画素が色にじみの補正処理を行うべき画素であるか否かを判定する判定手段と、
前記判定手段が、前記注目画素が色にじみの補正処理を行うべき画素であると判定した場合に、前記注目画素に対応する画素のイエロー、マジェンダ及びシアンの画素値をオフとにする注目画素決定変更手段とを備えることを特徴とする画像処理装置である。
According to the first aspect of the present invention, the yellow, magenta, cyan, and black pixel values that are overlaid on the halftone-processed N-value image and that are included in a preset area centered on the target pixel are off. The number of pixels of 1 and the second number of pixels in which pixels having at least one pixel value of yellow, magenta and cyan included in the region overlap with black pixels included in the region, and the halftone processing Whether or not the pixel of interest is to be subjected to color blur correction processing based on the on / off state of the yellow, magenta and cyan pixel values of the pixel corresponding to the pixel of interest in the N-value image Determining means for determining
When the determination unit determines that the target pixel is a pixel to be subjected to color blur correction processing, a target pixel determination for turning off the yellow, magenta, and cyan pixel values of the pixel corresponding to the target pixel An image processing apparatus comprising: a changing unit.

請求項２に係る発明は、請求項１に記載の画像処理装置において、前記判定手段は、前記第１の画素数が第１の閾値以上であり、前記第２の画素数が第２の閾値以上であり、且つ前記ハーフトーン処理されたＮ値画像内の前記注目画素に対応する画素のイエロー、マジェンダ及びシアンのいずれかの画素値がオンである場合に、前記注目画素が色にじみの補正処理を行うべき画素であると判定することを特徴とする画像処理装置である。
According to a second aspect of the present invention, in the image processing apparatus according to the first aspect, the determination unit is configured such that the first pixel number is equal to or greater than a first threshold value, and the second pixel number is a second threshold value. When the pixel value corresponding to the target pixel in the half-valued N-value image is ON, and the pixel value of any one of yellow, magenta, and cyan is on, the target pixel corrects color blur It is an image processing apparatus characterized by determining that a pixel is to be processed.

請求項３に係る発明は、請求項１の画像処理装置において、前記変更手段は、前記イエロー、前記マジェンダ及び前記シアンの画素値をオフにした画素の黒の画素値がオフである場合に、当該黒の画素値をオンにすることを特徴とする画像処理装置である。
According to a third aspect of the present invention, in the image processing apparatus according to the first aspect, when the changing unit has a black pixel value of a pixel in which the pixel values of the yellow, the magenta, and the cyan are turned off, The image processing apparatus is characterized in that the black pixel value is turned on.

請求項４に係る発明は、請求項１乃至３のいずれか１項に記載の画像処理装置において、前記Ｎ値画像は、２値画像であることを特徴とする画像処理装置である。
The invention according to claim 4 is the image processing apparatus according to any one of claims 1 to 3, wherein the N-value image is a binary image.

請求項５に係る発明は、コンピュータを、ハーフトーン処理されたＮ値画像に重ねられ、且つ注目画素を中心として予め設定される領域内に含まれるイエロー、マジェンダ、シアン及び黒の画素値がオフである第１の画素数と、前記領域内に含まれるイエロー、マジェンダ及びシアンの少なくとも１つの画素値を有する画素が前記領域内に含まれる黒画素と重なる第２の画素数と、前記ハーフトーン処理されたＮ値画像内の前記注目画素に対応する画素のイエロー、マジェンダ及びシアンの画素値のオン又はオフの状態とに基づいて、前記注目画素が色にじみの補正処理を行うべき画素であるか否かを判定する判定手段、及び前記判定手段が、前記注目画素が色にじみの補正処理を行うべき画素であると判定した場合に、前記注目画素に対応する画素のイエロー、マジェンダ及びシアンの画素値をオフとする画素値決定手段として機能させることを特徴とするプログラムである。

According to the fifth aspect of the present invention, the yellow, magenta, cyan, and black pixel values that are overlapped with the half-toned N-value image and included in a preset area centered on the target pixel are turned off. A second pixel number in which a pixel having at least one pixel value of yellow, magenta and cyan included in the region overlaps a black pixel included in the region, and the halftone The pixel of interest is a pixel to be subjected to color blur correction processing based on the on / off state of the yellow, magenta, and cyan pixel values of the pixel corresponding to the pixel of interest in the processed N-value image A determination unit that determines whether or not the target pixel is a pixel that should be subjected to a color blur correction process; That pixel of yellow, which is a program for causing to function as a pixel value determining means for turning off the pixel values of the magenta and cyan.

Claims

A first pixel number which is overlaid on a halftone-processed N-value image and which is included in a predetermined area centered on the pixel of interest and whose pixel values of yellow, magenta, cyan and black are off; A second pixel number in which a pixel having at least one pixel value of yellow, magenta, and cyan included in the region overlaps a black pixel included in the region; and the target pixel in the halftone processed N-value image Determination means for determining whether or not the pixel of interest is a pixel to be subjected to color blur correction processing based on an ON or OFF state of pixel values of yellow, magenta, and cyan of pixels corresponding to
When the determination unit determines that the target pixel is a pixel to be subjected to color blur correction processing, the target pixel determination change for turning off the yellow, magenta, and cyan pixel values of the pixel corresponding to the target pixel And an image processing apparatus.

The determination unit includes the target pixel in the N-valued image in which the first pixel number is equal to or greater than a first threshold, the second pixel number is equal to or greater than a second threshold, and the halftone process is performed. The pixel according to claim 1, wherein when the pixel value of any one of yellow, magenta, and cyan is on, it is determined that the pixel of interest is a pixel to be subjected to color blur correction processing. The image processing apparatus described.

2. The change means turns on a black pixel value when a black pixel value of a pixel in which the yellow, magenta, and cyan pixel values are turned off is off. Image processing apparatus.

The image processing apparatus according to claim 1, wherein the N-value image is a binary image.

Computer
A first pixel number which is overlaid on a halftone-processed N-value image and which is included in a predetermined area centered on the pixel of interest and whose pixel values of yellow, magenta, cyan and black are off; A second pixel number in which a pixel having at least one pixel value of yellow, magenta, and cyan included in the region overlaps a black pixel included in the region; and the target pixel in the halftone processed N-value image Determination means for determining whether or not the pixel of interest is a pixel to be subjected to color blur correction processing based on an ON or OFF state of pixel values of yellow, magenta, and cyan corresponding to the pixel, and When the determination unit determines that the target pixel is a pixel for which color blur correction processing is to be performed, the yellow, magenta, and shear of the pixel corresponding to the target pixel are determined. A program that functions as a pixel value determining means for turning off a pixel value of a screen.