JP2012098369A5 - - Google Patents
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- JP2012098369A5 JP2012098369A5 JP2010243986A JP2010243986A JP2012098369A5 JP 2012098369 A5 JP2012098369 A5 JP 2012098369A5 JP 2010243986 A JP2010243986 A JP 2010243986A JP 2010243986 A JP2010243986 A JP 2010243986A JP 2012098369 A5 JP2012098369 A5 JP 2012098369A5
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上記構成において、前記色設定部は、前記カラー画像の全画素数と、前記第１色及び前記第２色それぞれの出現頻度の合計との差が予め設定された第１基準頻度に満たず、かつ第２色の次に出現頻度が高い階級の色である第３色の次に出現頻度が高い階級の色である第４色の出現頻度が予め設定された第２基準頻度に満たず、かつ前記カラー画像の全画素数と、前記第１色、前記第２色、前記第３色、及び前記第４色それぞれの出現頻度の合計との差が予め設定された第３基準頻度に満たないとき、所定の単一色特定模様印刷モードを設定し、前記制御部は、前記色設定部によって前記単一色特定模様印刷モードが設定されたとき、前記色設定部によって設定された模様色の色トナーを用いて前記特定模様を印刷し、前記第２色の色トナーを用いて前記文字を印刷することが好ましい（請求項３）。 In the above-described configuration, the color setting unit does not satisfy a first reference frequency set in advance, and a difference between the total number of pixels of the color image and the sum of the appearance frequencies of the first color and the second color, And the appearance frequency of the fourth color, which is the color of the class having the second highest appearance frequency after the third color, which is the color of the class having the second highest appearance frequency of the second color, does not satisfy the preset second reference frequency, The difference between the total number of pixels of the color image and the sum of the appearance frequencies of the first color, the second color, the third color, and the fourth color satisfies a preset third reference frequency . A predetermined single color specific pattern printing mode is set, and the control unit sets the color of the pattern color set by the color setting unit when the single color specific pattern printing mode is set by the color setting unit. The specific pattern is printed using toner, and the second color toner is used. It is preferred to print the characters have (claim 3).
尚、色設定部１００は、先述の第５色グループＧ（５）や第６色グループＧ（６）が取得されている場合には、第５色グループＧ（５）や第６色グループＧ（６）についても第３色グループＧ（３）と同様の処理を行い、各色グループの中で最も出現頻度の高い色を、それぞれ、第５色、第６色として取得し、取得した各色を特定模様の模様色に設定する。
なお、上記構成において、前記色設定部は、前記カラー画像の全画素数と、前記第１色及び前記第２色それぞれの出現頻度の合計との差が予め設定された第１基準頻度に満たず、かつ第２色の次に出現頻度が高い階級の色である第３色の次に出現頻度が高い階級の色である第４色の出現頻度が予め設定された第２基準頻度に満たず、かつ前記カラー画像の全画素数と、前記第１色、前記第２色、前記第３色、及び前記第４色それぞれの出現頻度の合計との差が予め設定された第３基準頻度以上のときには、前記フルカラー特定模様印刷モードを設定することが好ましい。
もし、カラー画像の全画素数と、背景色と考えられる第１色及び文字色と考えられる第２色それぞれの出現頻度の合計との差が第１基準頻度に満たないときには、第１色及び第２色以外の色、つまり、模様色と考えられる色の特定模様の画像面積が小さい可能性がある。
また、第２色の次に出現頻度の高い階級の色である第３色の次に出現頻度の高い第４色の出現頻度が第２基準頻度に満たなければ、特定模様の色が第３色一色である可能性がある。
しかしながら、第４色の出現頻度が第２基準頻度に満たなくても、カラー画像の全画素数と、第１色、第２色、第３色、及び第４色それぞれの出現頻度の合計との差が予め設定された第３基準頻度以上であれば、特定模様の色が、第３色、及び、第３色よりも出現頻度の低い色、例えば、第４色や第５色である可能性がある。
この構成によれば、カラー画像の全画素数と、第１色及び第２色それぞれの出現頻度の合計との差が第１基準頻度に満たず、かつ第４色の出現頻度が第２基準頻度に満たず、かつカラー画像の全画素数と、第１色、第２色、第３色、及び第４色それぞれの出現頻度の合計との差が第３基準頻度以上のときには、フルカラー特定模様印刷モードを設定する。
これにより、第４色の出現頻度が一定頻度に満たなくて、特定模様の色が第３色一色である可能性のある場合でも、カラー画像の全画素数と、第１色、第２色、第３色、及び第４色それぞれの出現頻度の合計との差が一定頻度以上であれば、特定模様が複数色とみなして、フルカラー特定模様印刷モードを設定する。
その結果、特定模様が複数色であると精度良く判定することが可能となる。
The color setting unit 100 determines that the fifth color group G (5) or the sixth color group G is obtained when the fifth color group G (5) or the sixth color group G (6) is acquired. For (6), the same processing as in the third color group G (3) is performed, and the colors having the highest appearance frequency in each color group are acquired as the fifth color and the sixth color, respectively. Set to a specific pattern color.
In the above configuration, the color setting unit satisfies a first reference frequency that is set in advance so that a difference between the total number of pixels of the color image and the sum of the appearance frequencies of the first color and the second color is satisfied. In addition, the appearance frequency of the fourth color, which is the color of the class having the second highest appearance frequency after the third color, which is the color of the class having the second highest appearance frequency of the second color, satisfies the preset second reference frequency. And a third reference frequency in which a difference between the total number of pixels of the color image and the sum of the appearance frequencies of the first color, the second color, the third color, and the fourth color is preset. In the above case, it is preferable to set the full-color specific pattern printing mode.
If the difference between the total number of pixels of the color image and the sum of the appearance frequencies of the first color considered as the background color and the second color considered as the character color is less than the first reference frequency, the first color and There is a possibility that the image area of a specific pattern of a color other than the second color, that is, a color considered as a pattern color, is small.
In addition, if the appearance frequency of the fourth color having the second highest appearance frequency after the third color, which is the class color having the second highest appearance frequency after the second color, does not satisfy the second reference frequency, the color of the specific pattern is the third color. It may be a single color.
However, even if the appearance frequency of the fourth color does not reach the second reference frequency, the total number of pixels of the color image and the total appearance frequency of each of the first color, the second color, the third color, and the fourth color If the difference is equal to or higher than a preset third reference frequency, the color of the specific pattern is the third color and a color with a lower appearance frequency than the third color, for example, the fourth color or the fifth color. there is a possibility.
According to this configuration, the difference between the total number of pixels of the color image and the sum of the appearance frequencies of the first color and the second color is less than the first reference frequency, and the appearance frequency of the fourth color is the second reference frequency. If the difference between the total number of pixels of the color image and the appearance frequency of each of the first, second, third, and fourth colors is equal to or higher than the third reference frequency, the full color is specified. Set the pattern printing mode.
As a result, even when the appearance frequency of the fourth color does not reach a certain frequency and the color of the specific pattern may be the third color, the total number of pixels of the color image, the first color, and the second color If the difference from the sum of the appearance frequencies of the third color and the fourth color is equal to or greater than a certain frequency, the specific pattern is regarded as a plurality of colors and the full color specific pattern printing mode is set.
As a result, it can be accurately determined that the specific pattern has a plurality of colors.
Claims (12)
前記画像データ取得部により取得された画像データに基づいて、当該画像データの各画素についての色を階級とし、当該各色の出現頻度を表す度数分布を取得する度数分布取得部と、
前記度数分布取得部によって取得された度数分布において、最も出現頻度が高い階級の色である第１色を前記カラー画像における背景色に設定し、２番目に出現頻度が高い階級の色である第２色を前記カラー画像における文字色に設定し、前記度数分布において前記第２色よりも出現頻度が低い階級の複数色のうちいずれかの色、前記第１色、及び前記第２色の出現頻度に基づいてフルカラー特定模様印刷モードを設定し、前記第２色よりも出現頻度が低い階級の複数色を、前記カラー画像における特定模様の色である模様色に設定する色設定部と、
前記色設定部により前記フルカラー特定模様印刷モードが設定されたとき、当該フルカラー特定模様印刷モードとして、前記第２色の色トナーを用いて前記カラー画像における文字を印刷し、前記色設定部により設定された前記模様色の色トナーを用いて前記カラー画像における特定模様を印刷する制御部と、
を備えることを特徴とする画像形成装置。 An image data acquisition unit for acquiring image data representing a color image;
Based on the image data acquired by the image data acquisition unit, the frequency for each pixel of the image data as a class, a frequency distribution acquisition unit for acquiring a frequency distribution representing the appearance frequency of each color,
In the frequency distribution acquired by the frequency distribution acquisition unit, the first color that is the color of the class having the highest appearance frequency is set as the background color in the color image, and the color of the class having the second highest frequency of appearance is set. Two colors are set as character colors in the color image, and one of a plurality of colors having a lower appearance frequency than the second color in the frequency distribution, the first color, and the appearance of the second color A color setting unit that sets a full-color specific pattern printing mode based on the frequency, and sets a plurality of colors having a lower appearance frequency than the second color to a pattern color that is the color of the specific pattern in the color image;
When the full color specific pattern printing mode is set by the color setting unit, characters in the color image are printed using the second color toner as the full color specific pattern printing mode, and set by the color setting unit A control unit that prints a specific pattern in the color image using the color toner of the pattern color that has been made;
An image forming apparatus comprising:
前記カラー画像の全画素数と、前記第１色及び前記第２色それぞれの出現頻度の合計との差が予め設定された第１基準頻度に満たず、かつ前記第２色の次に出現頻度が高い階級の色である第３色の次に出現頻度が高い階級の色である第４色の出現頻度が予め設定された第２基準頻度以上のときには、前記フルカラー特定模様印刷モードを設定する
ことを特徴とする請求項１に記載の画像形成装置。 The color setting unit
The difference between the total number of pixels of the color image and the sum of the appearance frequencies of the first color and the second color does not satisfy the preset first reference frequency, and the appearance frequency next to the second color The full color specific pattern printing mode is set when the appearance frequency of the fourth color, which is the color of the class having the highest appearance frequency after the third color, which is the color of the higher class, is equal to or higher than the preset second reference frequency. The image forming apparatus according to claim 1.
前記カラー画像の全画素数と、前記第１色及び前記第２色それぞれの出現頻度の合計との差が予め設定された第１基準頻度に満たず、かつ第２色の次に出現頻度が高い階級の色である第３色の次に出現頻度が高い階級の色である第４色の出現頻度が予め設定された第２基準頻度に満たず、かつ前記カラー画像の全画素数と、前記第１色、前記第２色、前記第３色、及び前記第４色それぞれの出現頻度の合計との差が予め設定された第３基準頻度に満たないとき、所定の単一色特定模様印刷モードを設定し、
前記制御部は、前記色設定部によって前記単一色特定模様印刷モードが設定されたとき、前記色設定部によって設定された模様色の色トナーを用いて前記特定模様を印刷し、前記第２色の色トナーを用いて前記文字を印刷する
ことを特徴とする請求項１に記載の画像形成装置。 The color setting unit
The difference between the total number of pixels of the color image and the sum of the appearance frequencies of the first color and the second color is less than the preset first reference frequency, and the appearance frequency next to the second color is The frequency of appearance of the fourth color, which is the color of the class having the highest appearance frequency next to the third color, which is the color of the higher class, does not satisfy the preset second reference frequency, and the total number of pixels of the color image; When the difference between the appearance frequency of each of the first color, the second color, the third color, and the fourth color is less than a preset third reference frequency , a predetermined single color specific pattern printing is performed. Set the mode,
When the single color specific pattern printing mode is set by the color setting unit, the control unit prints the specific pattern using the color toner of the pattern color set by the color setting unit, and the second color The image forming apparatus according to claim 1, wherein the character is printed using a color toner .
ことを特徴とする請求項１に記載の画像形成装置。 The ratio of the total appearance frequency of each of the first color and the second color with respect to the total number of pixels of the color image is equal to or higher than a preset reference ratio, and the second highest appearance frequency after the second color. The full color specific pattern printing mode is set when the appearance frequency of the fourth color, which is the color of the class having the second highest appearance frequency after the third color, is equal to or higher than a preset second reference frequency. The image forming apparatus according to claim 1.
前記各画素の色を、予め設定された３つの要素色の濃度値によって表し、
前記度数分布取得部は、
前記各濃度値を３次元座標の各座標に割り当てることにより、前記各色を前記各階級として３次元座標上に配置し、当該各階級と前記出現頻度とを対応付けることによって、前記度数分布を３次元座標で表した３次元度数分布情報を生成し、
前記色設定部は、
前記３次元度数分布情報における３次元座標上で前記第１色と前記第２色とを直線的に結んだ経路上に配置された階級であって、かつ前記３次元座標上における前記第１色から
の距離が予め設定された判定距離を超え、かつ前記第２色からの距離が前記判定距離を超える階級の色を除外して、得られる前記出現頻度の順に基づき前記模様色を設定する
ことを特徴とする請求項１乃至請求項４のいずれか一項に記載の画像形成装置。 The image data acquisition unit
The color of each pixel is represented by density values of three preset element colors,
The frequency distribution acquisition unit
By assigning each density value to each coordinate of a three-dimensional coordinate, each color is arranged on the three-dimensional coordinate as each class, and the frequency distribution is three-dimensionally associated with each class and the appearance frequency. Generate 3D frequency distribution information expressed in coordinates,
The color setting unit
A class arranged on a path that linearly connects the first color and the second color on the three-dimensional coordinates in the three-dimensional frequency distribution information, and the first color on the three-dimensional coordinates The pattern color is set based on the order of the appearance frequency obtained by excluding the colors of the class in which the distance from the distance exceeds the determination distance set in advance and the distance from the second color exceeds the determination distance. The image forming apparatus according to claim 1, wherein the image forming apparatus is an image forming apparatus.
前記度数分布取得部は、前記各要素色の濃度値における予め設定された上位ビットを３次元座標の各座標に割り当てることにより、前記上位ビットが前記各要素色についてそれぞれ共通する色グループを前記各階級として前記３次元座標上に配置し、当該各階級と前記色グループの出現頻度とを対応付けることによって、前記色グループの度数分布を３次元度数分布情報として取得し、
前記色設定部は、
前記３次元座標上で前記第１色の色グループからの距離が予め設定されたユークリッド距離に満たない第１領域と、前記３次元座標上で前記第２色の色グループからの距離が前記ユークリッド距離に満たない第２領域とを直線的に結んで形成した領域のうち、前記第１領域及び前記第２領域を除外した領域の階級の色グループを除外して、得られる前記出現頻度の順に基づき前記模様色を設定する
ことを特徴とする請求項１乃至請求項４のいずれか一項に記載の画像形成装置。 The image data acquisition unit represents the color of each pixel by density values of three preset element colors, and represents each density value by a preset number of basic bits.
The frequency distribution acquisition unit assigns a preset upper bit in the density value of each element color to each coordinate of a three-dimensional coordinate, thereby assigning a color group in which the upper bit is common to each element color to each of the element colors. A frequency distribution of the color group is acquired as three-dimensional frequency distribution information by placing the class on the three-dimensional coordinates and associating the class with the appearance frequency of the color group.
The color setting unit
A first region in which the distance from the color group of the first color on the three-dimensional coordinate is less than a preset Euclidean distance; and a distance from the color group of the second color on the three-dimensional coordinate is the Euclidean Out of the regions formed by linearly connecting the second region that is less than the distance, the color group of the class of the region excluding the first region and the second region is excluded, and the order of appearance frequency is obtained. The image forming apparatus according to claim 1, wherein the pattern color is set based on the pattern color.
前記シアン、前記マゼンタ、前記イエロー、或いは、前記レッド、前記グリーン、前記ブルー、及びブラックのトナーを用いて画像形成を行う画像形成部と、
前記各画素における前記各濃度値のうちグレーに対応する部分をブラックに置き換える下色除去部と、をさらに備え、
前記下色除去部は、前記色設定部によりフルカラー特定模様印刷モードが設定されたとき、前記第２色を前記ブラックに置き換える１００％ＵＣＲ処理を行う
ことを特徴とする請求項１乃至請求項６のいずれか一項に記載の画像形成装置。 The color of each pixel is represented by density values of cyan, magenta, and yellow, or red, green, and blue,
An image forming unit that forms an image using toner of the cyan, the magenta, the yellow, or the red, the green, the blue, and the black; and
A lower color removal unit that replaces a portion corresponding to gray in each density value in each pixel with black, and
The under color removal unit performs 100% UCR processing for replacing the second color with the black when a full color specific pattern printing mode is set by the color setting unit. The image forming apparatus according to claim 1.
モノクロコピーのみ実行可能なユーザである第１ユーザを示す識別情報が予め登録された管理部と、
前記第１ユーザに対して前記フルカラー特定模様印刷モードの実行を許容する設定を受け付ける第１設定部と、
をさらに備えており、
前記制御部は、前記第１設定部により前記第１ユーザに対して前記フルカラー特定模様印刷モードの実行を許容する設定が受け付けられ、かつ前記識別情報入力部により前記第１ユーザを示す識別情報の入力が受け付けられたときに、前記第１ユーザに対して、前記モノクロコピーと前記フルカラー特定模様印刷モードとの実行を許容する
ことを特徴とする請求項１乃至請求項７のいずれか一項に記載の画像形成装置。 An identification information input unit that accepts input of user identification information;
A management unit in which identification information indicating a first user who can execute only monochrome copying is registered;
A first setting unit that receives a setting that allows the first user to execute the full-color specific pattern printing mode;
Further comprising
The control unit receives a setting for allowing the first user to execute the full-color specific pattern printing mode by the first setting unit, and sets identification information indicating the first user by the identification information input unit. The execution of the monochrome copy and the full-color specific pattern printing mode is allowed for the first user when an input is accepted. 8. The image forming apparatus described.
ことを特徴とする請求項２又は請求項３に記載の画像形成装置。 The image forming apparatus according to claim 2, further comprising a second setting unit configured to set at least the first reference frequency.
ことを特徴とする請求項４に記載の画像形成装置。 The image forming apparatus according to claim 4, further comprising a third setting unit configured to set at least the reference ratio.
ことを特徴とする請求項１乃至請求項１０のいずれか一項に記載の画像形成装置。 The image according to any one of claims 1 to 10, further comprising an image processing unit that performs a background color changing process for changing the background color to a predetermined color in the image data. Forming equipment.
前記度数分布取得部は、前記濃度値の、前記基本ビット数における予め設定された上位ビットが前記各要素色についてそれぞれ共通する色グループ毎に前記階級を割り当てて前記度数分布を取得し、
前記色設定部は、前記度数分布において、２番目に出現頻度が高い階級の色グループである第２色グループよりも出現頻度が低い階級の複数の色グループのうちいずれかの色グループ、最も出現頻度が高い階級の色グループである第１色グループ、前記第２色グループの出現頻度に基づいて前記フルカラー特定模様印刷モードを設定し、
前記第２色グループよりも出現頻度が低い階級の各色グループにおいて、最も出現頻度の高い色を前記模様色に設定する
ことを特徴とする請求項１乃至１１のいずれか一項に記載の画像形成装置。 The image data acquisition unit represents the color of each pixel by the density values of three preset element colors, and represents the density value by a preset number of basic bits.
The frequency distribution acquisition unit acquires the frequency distribution by assigning the class for each color group in which the higher-order bits set in advance in the basic bit number of the density value are common for each element color,
In the frequency distribution, the color setting unit is one of a plurality of color groups having a lower appearance frequency than a second color group that is a second color group having the second highest appearance frequency. The full color specific pattern printing mode is set based on the appearance frequency of the first color group and the second color group which are color groups of a high class frequency,
The image formation according to any one of claims 1 to 11, wherein a color having the highest appearance frequency is set as the pattern color in each color group having a lower appearance frequency than the second color group. apparatus.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010243986A JP5439339B2 (en) | 2010-10-29 | 2010-10-29 | Image forming apparatus |
| CN201110328486.8A CN102455628B (en) | 2010-10-29 | 2011-10-25 | Image forming apparatus |
| US13/283,883 US8570600B2 (en) | 2010-10-29 | 2011-10-28 | Image forming apparatus |
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| JP2010243986A JP5439339B2 (en) | 2010-10-29 | 2010-10-29 | Image forming apparatus |
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| JP2012098369A JP2012098369A (en) | 2012-05-24 |
| JP2012098369A5 true JP2012098369A5 (en) | 2012-08-16 |
| JP5439339B2 JP5439339B2 (en) | 2014-03-12 |
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|---|---|---|---|
| JP2010243986A Expired - Fee Related JP5439339B2 (en) | 2010-10-29 | 2010-10-29 | Image forming apparatus |
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| JP (1) | JP5439339B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5840065B2 (en) * | 2012-04-26 | 2016-01-06 | 京セラドキュメントソリューションズ株式会社 | Image forming apparatus |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3003375B2 (en) * | 1992-03-31 | 2000-01-24 | 松下電器産業株式会社 | Color image processing equipment |
| JPH08297390A (en) * | 1995-04-27 | 1996-11-12 | Canon Inc | Color image processor |
| JP2003219191A (en) * | 2002-01-21 | 2003-07-31 | Sharp Corp | Image processor and image forming apparatus comprising it |
| JP4513038B2 (en) * | 2008-04-28 | 2010-07-28 | ブラザー工業株式会社 | Image forming system, image forming apparatus, and restriction changing program |
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2010
- 2010-10-29 JP JP2010243986A patent/JP5439339B2/en not_active Expired - Fee Related
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