JP2011234193A5

JP2011234193A5 -

Info

Publication number: JP2011234193A5
Application number: JP2010103591A
Authority: JP
Filing date: 2010-04-28
Publication date: 2013-03-07
Anticipated expiration: 2030-04-28

Description

本発明は、原稿画像の判定対象領域の属性を判定する属性判定手段と、前記原稿画像の判定対象領域毎に、属性の判定結果を記憶する記憶手段と、前記判定結果を用いて前記原稿画像の一部を出力画像として出力する出力手段と、を備える画像処理装置において、前記記憶手段は、前記判定対象領域とその近傍領域を参照して前記判定対象領域の属性を判定した第１の判定結果と、前記近傍領域を参照することなく前記判定対象領域の属性を判定した第２の判定結果とを記憶し、前記出力手段は、前記判定対象領域が原稿全体としての判定範囲の境界に接する領域については前記第２の判定結果を用いることを最も主要な特徴とする。 The present invention provides an attribute determination unit that determines an attribute of a determination target area of a document image, a storage unit that stores an attribute determination result for each determination target area of the document image, and the document image using the determination result. Output means for outputting a part of the output image as an output image, wherein the storage means determines the attribute of the determination target region with reference to the determination target region and its vicinity region The result and the second determination result obtained by determining the attribute of the determination target area without referring to the neighboring area are stored, and the output unit touches the boundary of the determination range of the entire document. The most important feature of the region is to use the second determination result .

実施例１では、小領域（６、３）の属性判定範囲が、図９（ｂ）に示すように、小領域近傍の８つの小領域にまたがる枠線６０１内となる。しかし、小領域（６、３）の右側と上側は出力画像範囲外であり、判定範囲外の領域まで判定範囲に含む。判定範囲外のカラー画素５０５を有彩画素の連続長として計数することは適切ではなく、小領域の属性判定に際して、周辺領域を参照しない方がむしろ良い。従って、図９（ｄ）の６０３で示す領域（出力画像の周辺部を含む領域）については、属性を蓄積する小領域の範囲と判定範囲を一致させた結果を用いる。それ以外の画像出力領域については、実施例１で示したように、小領域の属性判定に際して、判定範囲は小領域の近傍を広めに見た結果を用いる。これにより、カラー画素５０６が一部存在する小領域（５、６）は（図９（ｃ））、カラー原稿の判定が可能となる。一方、カラー画素５０５が一部存在する小領域（６、３）については、モノクロ原稿と判定される。ここで、小領域（５、６）（６、６）にまたがるカラーの線は、全長が８ｍｍで、二つの領域に４ｍｍずつまたがっていて、カラー原稿の判定の基準となる有彩原稿の連続長は６ｍｍと設定した。 In the first embodiment, as shown in FIG. 9B, the attribute determination range of the small area (6, 3) is within the frame line 601 extending over the eight small areas in the vicinity of the small area. However, the right and upper sides of the small area (6, 3) are outside the output image range, and the area outside the determination range is included in the determination range. It is not appropriate to count the color pixels 505 outside the determination range as the continuous length of the chromatic pixels, and it is better not to refer to the surrounding area when determining the attribute of the small area. Therefore, for the region indicated by 603 in FIG. 9D (region including the peripheral portion of the output image), the result of matching the range of the small region in which the attribute is accumulated with the determination range is used. For the other image output areas, as shown in the first embodiment, when determining the attributes of the small area, the determination range uses a result obtained by viewing the vicinity of the small area wide. As a result, the small area (5, 6) in which some of the color pixels 506 are present (FIG. 9C) can be determined as a color document. On the other hand, a small area (6, 3 ) in which some of the color pixels 505 exist is determined as a monochrome original. Here, the color line extending over the small areas (5, 6) (6, 6) has a total length of 8 mm and extends over the two areas by 4 mm, and a continuous chromatic original serving as a reference for determining the color original. The length was set to 6 mm.

Claims

Attribute determination means for determining the attribute of the determination target area of the original image, storage means for storing the attribute determination result for each determination target area of the original image, and a part of the original image using the determination result In an image processing apparatus comprising output means for outputting as an output image,
The storage means determines the attribute of the determination target area without referring to the first determination result obtained by determining the attribute of the determination target area with reference to the determination target area and its vicinity area. Memorize the second determination result,
The image processing apparatus according to claim 1, wherein the output unit uses the second determination result for an area where the determination target area is in contact with a boundary of a determination range of the entire document .

The image processing apparatus according to claim 1 , wherein the output unit uses the first determination result for an area where the determination target area does not contact a boundary of a determination range of the entire document .

The attribute determining unit determines whether a pixel of the document image is a chromatic pixel or an achromatic pixel, and the reference neighboring region is a region including a chromatic pixel of a predetermined size. The image processing apparatus according to claim 1 .

Said attribute determining means, when the determination range surrounding area of the original image, according to claim 1 or 3, wherein determining the attribute based on chromatic pixels in a predetermined number near the boundary of the decision range Image processing apparatus.

An attribute determination step for determining the attribute of the determination target area of the original image, a storage step for storing the attribute determination result for each determination target area of the original image, and a part of the original image using the determination result. In an image processing method comprising an output step of outputting as an output image,
The storing step determines the attribute of the determination target area without referring to the first determination result obtained by determining the attribute of the determination target area with reference to the determination target area and its vicinity area. Memorize the second determination result,
In the image processing method , the output step uses the second determination result for an area where the determination target area is in contact with a boundary of a determination range of the entire document .

A program for causing a computer to realize the image processing method according to claim 5 .

A computer-readable recording medium on which a program for causing a computer to implement the image processing method according to claim 5 is recorded.