JP2008289168A - Image signal correcting method - Google Patents

Image signal correcting method Download PDF

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JP2008289168A
JP2008289168A JP2008144256A JP2008144256A JP2008289168A JP 2008289168 A JP2008289168 A JP 2008289168A JP 2008144256 A JP2008144256 A JP 2008144256A JP 2008144256 A JP2008144256 A JP 2008144256A JP 2008289168 A JP2008289168 A JP 2008289168A
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Tadayuki Tsuzura
忠幸 廿楽
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SUKURUDO ENTERPRISE KK
SUKURUDO ENTPR KK
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Abstract

<P>PROBLEM TO BE SOLVED: To deal with the problem that, persons with protanopia recognize 'deep red' (R=100%, G=0%, B=0%) approximately as "black" and can not distinguish between "deep red" and "black" and further, it is approximately difficult to distinguish between 'deep green' of warm color system and "brown". <P>SOLUTION: The present invention relates to a method of operating an image signal correcting means which performs a definition as a corrected image signal, by a correction signal generating means for generating a correction signal in accordance with values of R (red) signal, G (green) signal and B (blue) signal of an inputted image signal, and a correction means which corrects and outputs the input signal in accordance with the correction signal. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、表示装置等に利用されている画像信号の信号補正方法に関する。   The present invention relates to a signal correction method for an image signal used in a display device or the like.

従来の表示装置は、３原色信号であるＲ（赤）信号、Ｇ（緑）信号、Ｂ（青）信号にて、被写体の色を忠実に再現する処理が行われていた。
又、画質調整処理として所望の色を調整することが可能であったが、一定の割合で補正を行うことや、特定の色を特定の色に変換すること等が行われている。
尚、表示装置にて一般的に採用されている画像信号としてＲ（赤）信号、Ｇ（緑）信号、Ｂ（青）信号や、Ｙ（輝度信号）、ＣｂＣｒ（色）信号等がある。これらのＲ（赤）信号、Ｇ（緑）信号、Ｂ（青）信号等の表し方としては、デジタルで表した一例として８ｂｉｔで表すと０から２５５、アナログで表すと０から１の実数、さらに０％から１００％等の表し方がある。さらには、ｘｖＹＣＣ規格の様な、さらに広い色域を表すことも規格化されている。つまりアナログで表すと０以下の負の実数、若しくは１以上の実数で表わされる色域も利用されている。
以後表記は、特にことわり無き場合は、デジタル８ｂｉｔで量子化した０〜２５５で表記する。小数点以下は四捨五入して整数で表すものとする。 In the conventional display device, processing for faithfully reproducing the color of the subject is performed using the R (red) signal, the G (green) signal, and the B (blue) signal which are three primary color signals.
Moreover, although it was possible to adjust a desired color as the image quality adjustment processing, correction is performed at a certain ratio, a specific color is converted into a specific color, or the like.
Note that there are R (red) signal, G (green) signal, B (blue) signal, Y (luminance signal), CbCr (color) signal and the like as image signals generally adopted in the display device. As a way of expressing these R (red) signal, G (green) signal, B (blue) signal, etc., as an example expressed in digital, a real number from 0 to 255 when expressed in 8 bits, 0 to 1 when expressed in analog, Furthermore, there is a way of expressing from 0% to 100%. Furthermore, it is standardized to represent a wider color gamut, such as the xvYCC standard. That is, a color gamut represented by a negative real number of 0 or less or a real number of 1 or more is also used.
In the following description, unless otherwise specified, 0 to 255, which is quantized with digital 8 bits, is used. The numbers after the decimal point are rounded and expressed as an integer.

この３原色信号であるＲ（赤）信号、Ｇ（緑）信号、Ｂ（青）信号からなる画像信号を、忠実に再現することは健常者にとっては好ましいことである。
しかし色盲を患う者には、必ずしも色を忠実に再現するのが良いとは限らない。例えば第１色盲を患う者は「濃い赤」（Ｒ＝２５５、Ｇ＝０、Ｂ＝０）は、ほとんど「黒」に見える。さらに緑は、黄色みがかった暖色系の緑から青みがかった寒色系の緑まで、様々な色あいがある。この中で暖色系の濃い緑は、色盲の人には茶色とほとんど見分けがつかない。鮮やかな緑である抹茶色は、色盲の人には真っ茶色に見えることがある。日本の夏の広葉樹林の深い緑も、茶色と見分けがつかない。
さらに、視覚の基本特性である分光視感度特性は加齢とともに短波長側、すなわち青色系統の感度が低下する。このため高齢者は青色系統の色画像が見づらいものである。
又、あらかじめ登録された色盲 および色弱者にとって誤認傾向のある色に関する情報を参照して、入力された画像データに誤認要因となる色が含まれているか判断し画像データの色を所定の色に変換する考案がされている。
特開平１１−１７５０５０号広報 特開２０００−３０６０７４号広報 特開２００２−０５５６７１号広報 特開２００１−１５４６５５号広報 特開２００６−２４６０７２号広報 It is preferable for a healthy person to faithfully reproduce the image signal composed of the R (red) signal, the G (green) signal, and the B (blue) signal, which are the three primary color signals.
However, it is not always good to reproduce color faithfully for those who suffer from color blindness. For example, a person suffering from the first color blindness looks almost “black” in “dark red” (R = 255, G = 0, B = 0). In addition, green has a variety of colors, from a warm yellowish green to a bluish cold green. Among them, the warm greenish dark green is almost indistinguishable from brown for people with color blindness. A bright green, brownish brown, may appear brown to people with color blindness. The deep green of the Japanese broad-leaved forest is indistinguishable from brown.
Furthermore, the spectral sensitivity characteristic, which is a basic visual characteristic, decreases with increasing age on the short wavelength side, that is, the sensitivity of the blue color system. For this reason, it is difficult for elderly people to see blue color images.
In addition, referring to pre-registered information on color blindness and colors that tend to be mistaken for color-blind people, it is judged whether the input image data contains a color that causes a misidentification, and the color of the image data is changed to a predetermined color. There is a device to convert.
JP 11-175050 A JP 2000-306074 PR Japanese Laid-Open Patent Publication No. 2002-055671 JP 2001-154655 A JP 2006-246072 PR

３原色信号であるＲ（赤）信号、Ｇ（緑）信号、Ｂ（青）信号からなる画像信号を、忠実に再現することは健常者にとっては好ましいことである。
しかし色盲を患う者には、必ずしも色を忠実に再現するのが良いとは限らない。
例えば第１色盲を患う者は「濃い赤」（Ｒ＝２５５、Ｇ＝０、Ｂ＝０）は、ほとんど「黒」に見える。この「濃い赤」は使わずに、少しだけ白を混ぜた「明るい赤」（Ｒ＝２５５、Ｇ＝５１、Ｂ＝５１）や短波長（オレンジ）寄りの「朱色」（Ｒ＝２５５、Ｇ＝５１、Ｂ＝０）を使うと，同じ赤でも緑視物質や青視物質を刺激することが可能となり、黒と分別が可能になる。例えば黒い文字列の中でも「明るい赤」の文字であれば強調され、暗い背景の中でも文字が読めるようになる。
さらに緑は、黄色みがかった暖色系の緑から青みがかった寒色系の緑まで、様々な色あいがある。この中で暖色系の濃い緑は、色盲の人には茶色とほとんど見分けがつかない。鮮やかな緑である抹茶色は、色盲の人には真っ茶色に見えることがある。日本の夏の広葉樹林の深い緑も、茶色と見分けがつかない。一方道路標識の緑のように青みが強い緑は、茶色と間違えにくい。また明るい緑は，暖色系だと黄色や赤と間違えることがあるが、青みが強ければ間違えにくい。
道路標識や交通信号は、同じ緑でも青みの強い色に限ることが定められている。
又、視覚の基本特性である分光視感度特性は加齢とともに短波長側、すなわち青色系統の感度が低下する。このため高齢者は青色系統の色画像が見づらいものである。
この発明は、上記の事情に鑑みてなされたものであり、視覚に病を患う者に見やすい画像に補正して表示することや、高齢者の青色系統の色画像が見づらいものを補正して表示し、且つ健常者にとっても違和感の少ない表示を可能とすること、が可能な表示装置のための信号補正方法の提供を目的とする。
画像信号の３原色信号であるＲ（赤）信号、Ｇ（緑）信号、Ｂ（青）信号の値に応じて補正量を変えて補正することができる信号補正方法である。 It is preferable for a healthy person to faithfully reproduce an image signal composed of an R (red) signal, a G (green) signal, and a B (blue) signal, which are three primary color signals.
However, it is not always good to reproduce color faithfully for those who suffer from color blindness.
For example, a person suffering from the first color blindness looks almost “black” in “dark red” (R = 255, G = 0, B = 0). This “dark red” is not used, but “bright red” (R = 255, G = 51, B = 51) mixed with a little white or “vermilion” (R = 255, G) closer to the short wavelength (orange) = 51, B = 0), it is possible to stimulate the green and blue vision substances even with the same red color, and it is possible to distinguish from black. For example, if a character string is “bright red” in a black character string, it is emphasized, and the character can be read even in a dark background.
In addition, green has a variety of colors, from a warm yellowish green to a bluish cold green. Among them, the warm greenish dark green is almost indistinguishable from brown for people with color blindness. A bright green, brownish brown, may appear brown to people with color blindness. The deep green of the Japanese broad-leaved forest is indistinguishable from brown. On the other hand, green with a strong bluish color, like the green on the road sign, is unlikely to be mistaken for brown. In addition, bright green may be mistaken for yellow or red if it is a warm color, but it is difficult to make a mistake if the bluish color is strong.
Road signs and traffic signals are limited to the same green color but with a strong bluish color.
In addition, the spectral sensitivity characteristic, which is a basic visual characteristic, decreases with the lapse of time on the short wavelength side, that is, the sensitivity of the blue system. For this reason, it is difficult for elderly people to see blue color images.
The present invention has been made in view of the above circumstances, and corrects and displays an image that is easy to see for a visually ill person, or corrects and displays an image in which an elderly person's blue color image is difficult to see. In addition, it is an object of the present invention to provide a signal correction method for a display device capable of enabling a display with less discomfort for a healthy person.
This is a signal correction method that can be corrected by changing the correction amount according to the values of the R (red) signal, G (green) signal, and B (blue) signal, which are the three primary color signals of the image signal.

本発明は、入力される画像信号の値に応じて補正をかけるための補正信号を生成し、入力の画像信号に補正を行い出力することを最も主要な特徴とする。その詳細は以下に示す。   The most important feature of the present invention is that a correction signal for performing correction according to the value of an input image signal is generated, the input image signal is corrected and output. Details are shown below.

請求項１に記載の発明は、３原色信号であるＲ（赤）信号、Ｇ（緑）信号、Ｂ（青）信号からなる画像信号を入力するＲ入力端子、Ｇ入力端子、Ｂ入力端子と、
前記Ｒ入力端子とＧ入力端子とに接続され、その入力端子から入力されるＲ（赤）信号とＧ（緑）信号とにより補正をかけるための、Ｇ（緑）信号用の補正信号を生成するＧ補正信号生成手段と、
前記Ｒ入力端子とＢ入力端子とに接続され、その入力端子から入力されるＲ（赤）信号とＢ（青）信号とにより補正をかけるための、Ｂ（青）信号用の補正信号を生成するＢ補正信号生成手段と、を備える補正信号生成手段と、
前記Ｇ補正信号生成手段とＧ入力端子とに接続され、Ｇ補正信号生成手段にて生成された補正信号に基づきＧ入力端子から入力されるＧ（緑）信号の補正を行うＧ補正手段と、
前記Ｂ補正信号生成手段とＢ入力端子とに接続され、Ｂ補正信号生成手段にて生成された補正信号に基づきＢ入力端子から入力されるＢ（青）信号の補正を行うＢ補正手段と、を備える補正手段と、
前記Ｒ入力端子に接続されたＲ（赤）信号を出力するＲ出力端子と、
前記Ｇ補正手段に接続されたＧ（緑）信号を出力するＧ出力端子と、
前記Ｂ補正手段に接続されたＢ（青）信号を出力するＢ出力端子と、を備えた画像信号補正手段の動作方法であって、
当該補正信号生成手段のＧ補正信号生成手段が、入力されるＲ（赤）信号の値とＧ（緑）信号の値とに応じて一意に値が決定される、つまりＲ（赤）信号の値とＧ（緑）信号の値との大小に関連して補正信号の値の大小が決定される補正信号を生成するステップと、
当該補正信号生成手段のＢ補正信号生成手段が、入力されるＲ（赤）信号の値とＢ（青）信号の値とに応じて一意に値が決定される、つまりＲ（赤）信号の値とＢ（青）信号の値との大小に関連して補正信号の値の大小が決定される補正信号を生成するステップと、
当該補正手段のＧ補正手段が、前記Ｇ補正信号生成手段にて生成された補正信号に基づき、入力されたＧ（緑）信号を前記Ｇ補正信号生成手段で生成した補正信号にて補正して、補正後のＧ（緑）信号を出力するステップと、
当該補正手段のＢ補正手段が、前記Ｂ補正信号生成手段にて生成された補正信号に基づき、入力されたＢ（青）信号を前記Ｂ補正信号生成手段で生成した補正信号にて補正して、補正後のＢ（青）信号を出力するステップと、
を実行することを特徴とする画像信号補正手段の動作方法である。
この発明により、入力されるＲ（赤）、Ｇ（緑）信号、Ｂ（青）信号の値に応じて補正量を変えて補正することができる。つまり、Ｒ（赤）信号の値とＧ（緑）信号の値とに応じて補正量を変えて補正を行う事や、Ｒ（赤）信号の値とＢ（青）信号の値とに応じて補正量を変えて補正することができる。 According to the first aspect of the present invention, there are provided an R input terminal, an G input terminal, and a B input terminal for inputting an image signal composed of an R (red) signal, a G (green) signal, and a B (blue) signal which are three primary color signals. ,
A correction signal for a G (green) signal is generated which is connected to the R input terminal and the G input terminal and is corrected by an R (red) signal and a G (green) signal input from the input terminal. G correction signal generating means for performing,
A correction signal for a B (blue) signal is generated which is connected to the R input terminal and the B input terminal and is corrected by an R (red) signal and a B (blue) signal input from the input terminal. Correction signal generation means comprising B correction signal generation means for performing,
G correction means connected to the G correction signal generation means and the G input terminal, and for correcting a G (green) signal input from the G input terminal based on the correction signal generated by the G correction signal generation means;
B correction means connected to the B correction signal generating means and the B input terminal, for correcting a B (blue) signal input from the B input terminal based on the correction signal generated by the B correction signal generating means; Correction means comprising:
An R output terminal for outputting an R (red) signal connected to the R input terminal;
A G output terminal for outputting a G (green) signal connected to the G correction means;
A B output terminal for outputting a B (blue) signal connected to the B correction means, and an operation method of the image signal correction means,
The G correction signal generation means of the correction signal generation means determines a value uniquely according to the value of the input R (red) signal and the value of the G (green) signal, that is, the R (red) signal Generating a correction signal in which the magnitude of the value of the correction signal is determined in relation to the magnitude of the value and the value of the G (green) signal;
The B correction signal generation unit of the correction signal generation unit uniquely determines a value according to the value of the input R (red) signal and the value of the B (blue) signal, that is, the R (red) signal. Generating a correction signal in which the magnitude of the value of the correction signal is determined in relation to the magnitude of the value and the value of the B (blue) signal;
The G correction unit of the correction unit corrects the input G (green) signal with the correction signal generated by the G correction signal generation unit based on the correction signal generated by the G correction signal generation unit. Outputting a corrected G (green) signal;
Based on the correction signal generated by the B correction signal generation unit, the B correction unit of the correction unit corrects the input B (blue) signal with the correction signal generated by the B correction signal generation unit. Outputting a corrected B (blue) signal;
Is an operation method of the image signal correcting means.
According to the present invention, correction can be performed by changing the correction amount according to the values of the input R (red), G (green) signal, and B (blue) signal. That is, correction is performed by changing the correction amount according to the value of the R (red) signal and the value of the G (green) signal, or according to the value of the R (red) signal and the value of the B (blue) signal. Can be corrected by changing the correction amount.

請求項２に記載の発明は、３原色信号であるＲ（赤）信号、Ｇ（緑）信号、Ｂ（青）信号からなる画像信号を入力するＲ入力端子、Ｇ入力端子、Ｂ入力端子と、
前記Ｇ入力端子とＢ入力端子とに接続され、その入力端子から入力されるＧ（緑）信号とＢ（青）信号とに基づき補正をかけるための、Ｂ（青）信号用の補正信号を生成するＢ補正信号生成手段を備える補正信号生成手段と、
前記Ｂ入力端子とＢ補正信号生成手段とに接続され、Ｂ補正信号生成手段にて生成された補正信号に基づきＢ入力端子から入力されるＢ（青）信号の補正を行うＢ補正手段を備える補正手段と、
前記Ｒ入力端子に接続されたＲ（赤）信号を出力するＲ出力端子と、
前記Ｇ入力端子に接続されたＧ（緑）信号を出力するＧ出力端子と、
前記Ｂ補正手段に接続されたＢ（青）信号を出力するＢ出力端子と、
を備えた画像信号補正手段の動作方法であって、
当該補正信号生成手段のＢ補正信号生成手段が、入力されるＧ（緑）信号の値とＢ（青）信号の値とに応じて一意に値が決定される、つまりＧ（緑）信号の値とＢ（青）信号の値との大小に関連して補正信号の値の大小が決定される補正信号を生成するステップと、
当該補正手段のＢ補正手段が、前記Ｂ補正信号生成手段にて生成された補正信号に基づき、入力されたＢ（青）信号をＢ補正信号生成手段で生成した補正信号にて補正して、その補正後のＢ（青）信号を出力するステップと、
を実行することを特徴とする画像信号補正手段の動作方法である。
この発明により、入力されるＧ（緑）信号の値とＢ（青）信号の値とに応じて補正量を変えて補正することができる。 The invention according to claim 2 includes an R input terminal, an G input terminal, and a B input terminal for inputting an image signal composed of an R (red) signal, a G (green) signal, and a B (blue) signal which are three primary color signals. ,
A correction signal for a B (blue) signal, which is connected to the G input terminal and the B input terminal and applies correction based on the G (green) signal and the B (blue) signal input from the input terminal. Correction signal generation means comprising B correction signal generation means for generating;
B correction means connected to the B input terminal and the B correction signal generating means and for correcting the B (blue) signal input from the B input terminal based on the correction signal generated by the B correction signal generating means is provided. Correction means;
An R output terminal for outputting an R (red) signal connected to the R input terminal;
A G output terminal for outputting a G (green) signal connected to the G input terminal;
A B output terminal for outputting a B (blue) signal connected to the B correction means;
An operation method of the image signal correction means comprising:
The B correction signal generation means of the correction signal generation means determines a value uniquely according to the value of the input G (green) signal and the value of the B (blue) signal, that is, the G (green) signal Generating a correction signal in which the magnitude of the value of the correction signal is determined in relation to the magnitude of the value and the value of the B (blue) signal;
The B correction means of the correction means corrects the input B (blue) signal with the correction signal generated by the B correction signal generation means based on the correction signal generated by the B correction signal generation means, Outputting the corrected B (blue) signal;
Is an operation method of the image signal correcting means.
According to the present invention, correction can be performed by changing the correction amount according to the value of the input G (green) signal and the value of the B (blue) signal.

請求項３に記載の発明は、３原色信号であるＲ（赤）信号、Ｇ（緑）信号、Ｂ（青）信号からなる画像信号を入力するＲ入力端子、Ｇ入力端子、Ｂ入力端子と、
前記Ｒ入力端子とＧ入力端子とＢ入力端子とに接続され、その入力端子から入力されるＲ（赤）信号、Ｇ（緑）信号、Ｂ（青）信号からＹ（輝度）信号に変換する変換手段と、その変換手段により変換したＹ（輝度）信号とＢ（青）信号とに基づき補正をかけるための、Ｂ（青）信号用の補正信号を生成するＢ補正信号生成手段と、を備える補正信号生成手段と、
前記Ｂ補正信号生成手段とＢ入力端子とに接続され、Ｂ補正信号生成手段にて生成された補正信号に基づきＢ入力端子から入力されるＢ（青）信号の補正を行うＢ補正手段を備える補正手段と、
Ｒ入力端子に接続されたＲ（赤）信号を出力するＲ出力端子と、
Ｇ入力端子に接続されたＧ（緑）信号を出力するＧ出力端子と、
Ｂ補正手段に接続されたＢ（青）信号を出力するＢ出力端子と、
を備えた画像信号補正手段の動作方法であって、
当該補正信号生成手段の変換手段が、入力端子から入力されるＲ（赤）信号、Ｇ（緑）信号、Ｂ（青）信号をＹ（輝度）信号に変換し、その変換したＹ（輝度）信号を出力するステップと、
当該補正信号生成手段のＢ補正信号生成手段が、入力される画像信号のＲ（赤）信号、Ｇ（緑）信号、Ｂ（青）信号から変換して得られたＹ（輝度）信号の値とＢ（青）信号の値とに応じて一意に値が決定される、つまりＹ（輝度）信号の値とＢ（青）信号の値との大小に関連して補正信号の値の大小が決定される補正信号を生成するステップと、
当該補正手段のＢ補正手段が、前記Ｂ補正信号生成手段にて生成された補正信号に基づき、入力されたＢ（青）信号を前記Ｂ補正信号生成手段が生成した補正信号にて補正して、その補正後のＢ（青）信号を出力するステップと、
を実行することを特徴とする画像信号補正手段の動作方法である。
この発明により、入力されるＲ（赤）信号、Ｇ（緑）信号、Ｂ（青）信号から変換したＹ（輝度）信号の値とＢ（青）信号の値とに応じて補正量を変えて補正することができる。 According to a third aspect of the present invention, there are provided an R input terminal, a G input terminal, and a B input terminal for inputting an image signal composed of an R (red) signal, a G (green) signal, and a B (blue) signal which are three primary color signals. ,
The R input terminal, the G input terminal, and the B input terminal are connected to each other, and R (red) signal, G (green) signal, and B (blue) signal input from the input terminals are converted into Y (luminance) signals. A conversion means, and a B correction signal generation means for generating a correction signal for a B (blue) signal for performing correction based on the Y (luminance) signal and the B (blue) signal converted by the conversion means, A correction signal generating means comprising:
B correction means connected to the B correction signal generating means and the B input terminal, for correcting a B (blue) signal input from the B input terminal based on the correction signal generated by the B correction signal generating means. Correction means;
An R output terminal for outputting an R (red) signal connected to the R input terminal;
A G output terminal for outputting a G (green) signal connected to the G input terminal;
A B output terminal for outputting a B (blue) signal connected to the B correction means;
An operation method of the image signal correction means comprising:
The conversion means of the correction signal generation means converts the R (red) signal, G (green) signal, and B (blue) signal input from the input terminal into a Y (luminance) signal, and the converted Y (luminance) Outputting a signal;
The value of the Y (luminance) signal obtained by the B correction signal generation means of the correction signal generation means converted from the R (red) signal, G (green) signal, and B (blue) signal of the input image signal. And the B (blue) signal value are uniquely determined, that is, the magnitude of the correction signal value is related to the magnitude of the Y (luminance) signal value and the B (blue) signal value. Generating a correction signal to be determined;
The B correction unit of the correction unit corrects the input B (blue) signal with the correction signal generated by the B correction signal generation unit based on the correction signal generated by the B correction signal generation unit. Outputting a corrected B (blue) signal;
Is an operation method of the image signal correcting means.
According to the present invention, the correction amount is changed according to the value of the Y (luminance) signal converted from the input R (red) signal, G (green) signal, and B (blue) signal and the value of the B (blue) signal. Can be corrected.

本発明は、入力される画像信号の値に応じて補正をかけるための補正信号を生成する補正信号生成手段と、その補正信号生成手段の補正信号に基づき入力される画像信号に補正を加え出力する補正手段と、を備えた画像信号の信号補正手段の動作方法であるため、
入力されるＲ（赤）信号の値とＧ（緑）信号の値とに応じた補正信号を生成してＧ（緑）信号の補正を行う事や、入力されるＲ（赤）信号とＢ（青）信号の値との値に応じた補正信号を生成してＢ（青）信号の補正を行う事もできる。
さらに入力されるＧ（緑）信号とＢ（青）信号との値に応じた補正信号を生成してＢ（青）信号の補正を行う事もできる。
さらに入力されるＲ（赤）信号、Ｇ（緑）信号、Ｂ（青）信号から変換したＹ（輝度）信号の値とＢ（青）信号の値とに応じた補正信号を生成してＢ（青）信号の補正を行う事もできる。 The present invention relates to a correction signal generation means for generating a correction signal for performing correction according to the value of an input image signal, and an output obtained by correcting the input image signal based on the correction signal of the correction signal generation means And a correction unit that performs the operation method of the signal correction unit of the image signal,
A correction signal corresponding to the value of the input R (red) signal and the value of the G (green) signal is generated to correct the G (green) signal, or the input R (red) signal and B A correction signal corresponding to the value of the (blue) signal can be generated to correct the B (blue) signal.
It is also possible to correct the B (blue) signal by generating a correction signal corresponding to the values of the input G (green) signal and B (blue) signal.
Further, a correction signal corresponding to the value of the Y (luminance) signal and the value of the B (blue) signal converted from the input R (red) signal, G (green) signal, and B (blue) signal is generated, and B The (blue) signal can also be corrected.

入力される３原色の入力信号であるＲ（赤）信号、Ｇ（緑）信号、Ｂ（青）信号からなる画像信号の値に応じて補正信号を生成し、その前記補正信号に基づき前記入力の画像信号に補正を加え出力することで実現した。   A correction signal is generated according to the value of an image signal composed of an input signal of three primary colors, which is an R (red) signal, a G (green) signal, and a B (blue) signal. This was realized by correcting and outputting the image signal.

以下に、本発明の実施の形態例を詳細に説明する。しかし、この実施の形態例によって、この発明が限定されるものではない。   Hereinafter, embodiments of the present invention will be described in detail. However, the present invention is not limited to the embodiments.

先ず図１を参照して、画像信号補正手段１０Ｂを例に、Ｒ（赤）信号の値に対応してＧ（緑）信号を補正する、若しくはＲ（赤）信号の値に対応してＢ（青）信号を補正する場合の説明を行う。   First, referring to FIG. 1, taking the image signal correction means 10B as an example, the G (green) signal is corrected corresponding to the value of the R (red) signal, or the B corresponding to the value of the R (red) signal. The case of correcting the (blue) signal will be described.

画像信号補正手段１０Ｂは、
画像信号の赤色成分であるＲ（赤）信号が入力される入力端子２０と、
画像信号の緑色成分であるＧ（緑）信号が入力される入力端子３０と、
画像信号の青色成分であるＢ（青）信号が入力される入力端子４０と、
前記入力端子２０、３０、４０と後段の補正手段７０Ｂとに接続された補正信号生成手段６０Ｂと、
前記入力端子３０、４０と補正信号生成手段６０Ｂと出力端子９０、１００とに接続された補正手段７０Ｂと、
前記入力端子２０に接続された出力端子８０と、
前記補正手段７０Ｂに接続された出力端子９０、１００とが備えられている。 The image signal correction means 10B
An input terminal 20 to which an R (red) signal that is a red component of the image signal is input;
An input terminal 30 to which a G (green) signal that is a green component of the image signal is input;
An input terminal 40 to which a B (blue) signal that is a blue component of the image signal is input;
A correction signal generating means 60B connected to the input terminals 20, 30, 40 and the subsequent correcting means 70B;
Correction means 70B connected to the input terminals 30, 40, the correction signal generation means 60B, and the output terminals 90, 100;
An output terminal 80 connected to the input terminal 20;
Output terminals 90 and 100 connected to the correcting means 70B are provided.

補正信号生成手段６０Ｂは、
前記入力端子２０、３０と後段の補正手段７０ＢのＧ補正手段７１Ｂとに接続されたＧ補正信号生成手段６１Ｂと、
前記入力端子２０、４０と後段の補正手段７０ＢのＢ補正手段７２Ｂとに接続されたＢ補正信号生成手段６２Ｂとを備え、
Ｇ補正信号生成手段６１Ｂは、Ｒ（赤）信号とＧ（緑）信号とに基づき補正信号を生成してＧ補正手段７１Ｂに出力し、
Ｂ補正信号生成手段６２Ｂは、Ｒ（赤）信号とＢ（青）信号とに基づき補正信号を生成してＢ補正手段７２Ｂに出力する。 The correction signal generation means 60B
G correction signal generation means 61B connected to the input terminals 20 and 30 and G correction means 71B of the subsequent correction means 70B;
B correction signal generation means 62B connected to the input terminals 20 and 40 and B correction means 72B of the subsequent correction means 70B,
The G correction signal generation unit 61B generates a correction signal based on the R (red) signal and the G (green) signal, and outputs the correction signal to the G correction unit 71B.
The B correction signal generation unit 62B generates a correction signal based on the R (red) signal and the B (blue) signal and outputs the correction signal to the B correction unit 72B.

補正手段７０Ｂは、
入力端子３０とＧ補正信号生成手段６１Ｂと出力端子９０とに接続されたＧ補正手段７１Ｂと、
入力端子４０とＢ補正信号生成手段６２Ｂと出力端子１００とに接続されたＢ補正手段７２Ｂとを備え、
Ｇ補正手段７１Ｂは、入力端子３０からのＧ（緑）信号にＧ補正信号生成手段６１Ｂからの補正信号に基づき補正を行い補正後の信号を出力端子９０に出力し、
Ｂ補正手段７２Ｂは、入力端子４０からのＢ（青）信号にＢ補正信号生成手段６２Ｂからの補正信号に基づき補正を行い補正後の信号を出力端子１００に出力する。 The correction means 70B
G correction means 71B connected to the input terminal 30, G correction signal generation means 61B, and output terminal 90;
B correction means 72B connected to the input terminal 40, B correction signal generation means 62B, and output terminal 100,
The G correction unit 71B corrects the G (green) signal from the input terminal 30 based on the correction signal from the G correction signal generation unit 61B, and outputs the corrected signal to the output terminal 90.
The B correction unit 72B corrects the B (blue) signal from the input terminal 40 based on the correction signal from the B correction signal generation unit 62B, and outputs the corrected signal to the output terminal 100.

上記のように構成された画像信号補正手段１０Ｂに、それぞれＲ（赤）信号＝２５５、Ｇ（緑）信号＝０、Ｂ（青）信号＝０が入力された際に、Ｇ（緑）信号とＢ（青）信号とを補正する場合を、図１を参照して説明を行う。   When the R (red) signal = 255, the G (green) signal = 0, and the B (blue) signal = 0 are input to the image signal correction means 10B configured as described above, the G (green) signal And B (blue) signal will be described with reference to FIG.

画像信号補正手段１０Ｂの入力端子２０、３０、４０には、それぞれＲ（赤）信号＝２５５、Ｇ（緑）信号＝０、Ｂ（青）信号＝０が入力される。
入力端子２０には、画像信号の赤色成分であるＲ（赤）信号が入力され、
入力端子３０には、画像信号の緑色成分であるＧ（緑）信号が入力され、
入力端子４０には、画像信号の青色成分であるＢ（青）信号が入力される。
従って、Ｒ（赤）信号は、補正信号生成手段６０ＢのＧ補正信号生成手段６１ＢとＢ補正信号生成手段６２Ｂとに入力され、さらに出力端子８０にて出力される。
Ｇ（緑）信号は、補正信号生成手段６０ＢのＧ補正信号生成手段６１Ｂと補正手段７０ＢのＧ補正手段７１Ｂとに入力される。
Ｂ（青）信号は、補正信号生成手段６０ＢのＢ補正信号生成手段６２Ｂと補正手段７０ＢのＢ補正手段７２Ｂとに入力される。 The R (red) signal = 255, the G (green) signal = 0, and the B (blue) signal = 0 are input to the input terminals 20, 30, 40 of the image signal correcting unit 10B, respectively.
The input terminal 20 receives an R (red) signal that is a red component of the image signal,
The input terminal 30 receives a G (green) signal that is a green component of the image signal,
A B (blue) signal that is a blue component of the image signal is input to the input terminal 40.
Accordingly, the R (red) signal is input to the G correction signal generating unit 61B and the B correction signal generating unit 62B of the correction signal generating unit 60B, and is further output from the output terminal 80.
The G (green) signal is input to the G correction signal generation unit 61B of the correction signal generation unit 60B and the G correction unit 71B of the correction unit 70B.
The B (blue) signal is input to the B correction signal generation unit 62B of the correction signal generation unit 60B and the B correction unit 72B of the correction unit 70B.

補正信号生成手段６０ＢのＧ補正信号生成手段６１Ｂは、入力されるＲ（赤）信号とＧ（緑）信号の値に基づき、一意に値が決定される補正信号を生成し、補正手段７０ＢのＧ補正手段７１Ｂに出力する。
尚、Ｇ補正信号生成手段６１Ｂが生成する補正信号の例１Ｂとして、
ＧＫ１は所望する係数であり一例として２．５、
ＧＫ２は所望する係数であり一例として５、
入力されるＲ（赤）信号をＲ、ただしＲは０〜２５５、
入力されるＧ（緑）信号をＧ、ただしＧは０〜２５５とするとき、
（Ｒ−（Ｇ×ＧＫ１））が負の値の場合では、生成される補正信号Ｇは０、
（Ｒ−（Ｇ×ＧＫ１））が正の値の場合では、
補正信号Ｇ＝（Ｒ−（Ｇ×ＧＫ１））÷ＧＫ２、
である補正信号Ｇを生成する。
従って、Ｒ（赤）信号の値とＧ（緑）信号の値との大小に関連して補正信号の値の大小が決定される補正信号を生成できる。 The G correction signal generation unit 61B of the correction signal generation unit 60B generates a correction signal whose value is uniquely determined based on the values of the input R (red) signal and G (green) signal, and the correction unit 70B Output to the G correction means 71B.
As an example of the correction signal 1B generated by the G correction signal generating means 61B,
GK1 is a desired coefficient, for example 2.5,
GK2 is a desired coefficient, for example 5,
R (red) signal input is R, where R is 0-255,
When the input G (green) signal is G, where G is 0 to 255,
When (R− (G × GK1)) is a negative value, the generated correction signal G is 0,
When (R− (G × GK1)) is a positive value,
Correction signal G = (R− (G × GK1)) ÷ GK2,
A correction signal G is generated.
Therefore, it is possible to generate a correction signal in which the magnitude of the correction signal value is determined in relation to the magnitude of the R (red) signal value and the G (green) signal value.

補正信号生成手段６０ＢのＢ補正信号生成手段６２Ｂは、入力されるＲ（赤）信号とＢ（青）信号の値に基づき、一意に値が決定される補正信号を生成し、補正手段７０ＢのＢ補正手段７２Ｂに出力する。
尚、Ｂ補正信号生成手段６２Ｂが生成する補正信号の例２Ｂとして、
ＢＫ１は所望する係数であり一例として２．５、
ＢＫ２は所望する係数であり一例として５、
入力されるＲ（赤）信号をＲ、ただしＲは０〜２５５、
入力されるＢ（青）信号をＢ、ただしＢは０〜２５５とするとき、
（Ｒ−（Ｂ×ＢＫ１））が負の値の場合では、生成される補正信号Ｂは０、
（Ｒ−（Ｂ×ＢＫ１））が正の値の場合では、
補正信号Ｂ＝（Ｒ−（Ｂ×ＢＫ１））÷ＢＫ２、
である補正信号Ｂを生成する。
従って、Ｒ（赤）信号の値とＢ（青）信号の値との大小に関連して補正信号の値の大小が決定される補正信号を生成できる。 The B correction signal generation unit 62B of the correction signal generation unit 60B generates a correction signal whose value is uniquely determined based on the values of the input R (red) signal and B (blue) signal, and the correction unit 70B Output to the B correction means 72B.
As an example 2B of the correction signal generated by the B correction signal generation means 62B,
BK1 is a desired coefficient, for example 2.5,
BK2 is a desired coefficient, for example 5,
R (red) signal input is R, where R is 0-255,
When the input B (blue) signal is B, where B is 0 to 255,
When (R− (B × BK1)) is a negative value, the generated correction signal B is 0,
When (R− (B × BK1)) is a positive value,
Correction signal B = (R− (B × BK1)) ÷ BK2,
A correction signal B is generated.
Accordingly, it is possible to generate a correction signal in which the magnitude of the correction signal value is determined in relation to the magnitude of the R (red) signal value and the B (blue) signal value.

補正手段７０ＢのＧ補正手段７１Ｂは、入力端子３０からのＧ（緑）信号に、Ｇ補正信号生成手段６１Ｂからの補正信号に基づき補正を行い出力端子９０に出力する。
補正手段７０ＢのＢ補正手段７２Ｂは、入力端子４０からのＢ（青）信号に、Ｂ補正信号生成手段６２Ｂからの補正信号に基づき補正を行い出力端子１００に出力する。
その結果、Ｒ（赤）信号＝２５５、Ｇ（緑）信号＝０、Ｂ（青）信号＝０が入力された際に、Ｒ（赤）信号＝２５５、Ｇ（緑）信号＝５１、Ｂ（青）信号＝５１に補正することができる。
この例１Ｂ、２Ｂの補正前の信号と補正後の信号との関係の代表値例を図４に示す。 The G correction means 71B of the correction means 70B corrects the G (green) signal from the input terminal 30 based on the correction signal from the G correction signal generation means 61B, and outputs it to the output terminal 90.
The B correction means 72B of the correction means 70B corrects the B (blue) signal from the input terminal 40 based on the correction signal from the B correction signal generation means 62B, and outputs it to the output terminal 100.
As a result, when R (red) signal = 255, G (green) signal = 0, and B (blue) signal = 0, R (red) signal = 255, G (green) signal = 51, B (Blue) signal = 51 can be corrected.
A representative value example of the relationship between the signals before and after correction in Examples 1B and 2B is shown in FIG.

さらに又、補正信号の値を決める別な例３Ｂとして、入力されるＲ（赤）信号と入力されるＢ（青）信号とに基づき、
logは、１０を低とする対数とし、
入力されるＲ（赤）信号をＲ、ただしＲは０〜１００、
入力されるＢ（青）信号をＢ、ただしＢは０〜１００とするとき、
（１−log（（Ｂ＋１０）÷１０））が負の値の場合では、生成される補正信号Ｂは０、
（１−log（（Ｂ＋１０）÷１０））が正の値の場合では、
補正信号Ｂ＝（２０×（Ｒ÷１００））×（１−log（（Ｂ＋１０）÷１０））、
である補正信号Ｂを生成する。
従って、Ｒ（赤）信号の値とＢ（青）信号の値との大小に関連して補正信号の値の大小が決定される補正信号を生成できる。 Furthermore, as another example 3B for determining the value of the correction signal, based on the input R (red) signal and the input B (blue) signal,
log is the logarithm with 10 being low,
The input R (red) signal is R, where R is 0 to 100,
When the input B (blue) signal is B, where B is 0-100,
When (1-log ((B + 10) ÷ 10)) is a negative value, the generated correction signal B is 0,
When (1-log ((B + 10) ÷ 10)) is a positive value,
Correction signal B = (20 × (R ÷ 100)) × (1−log ((B + 10) ÷ 10)),
A correction signal B is generated.
Accordingly, it is possible to generate a correction signal in which the magnitude of the correction signal value is determined in relation to the magnitude of the R (red) signal value and the B (blue) signal value.

この例３Ｂの補正前の信号と補正後の信号との関係の代表値例を図５に示し、さらに入力されているＲ（赤）信号とＢ（青）信号の値に基づき生成される補正信号の代表値例を表１に示す。

Figure 2008289168
尚、前記例はＢ補正信号生成手段６２Ｂの例であるが、Ｇ補正信号生成手段６１Ｂも同様である。 A representative value example of the relationship between the signal before correction and the signal after correction in Example 3B is shown in FIG. 5, and further generated based on the values of the input R (red) signal and B (blue) signal. Table 1 shows an example of representative values of signals.
Figure 2008289168
 The above example is an example of the B correction signal generation unit 62B, but the same applies to the G correction signal generation unit 61B.

次に図２を参照して、画像信号補正手段１０Ｃを例に説明を行う。
画像信号補正手段１０Ｃは、
画像信号の赤色成分であるＲ（赤）信号が入力される入力端子２０と、
画像信号の緑色成分であるＧ（緑）信号が入力される入力端子３０と、
画像信号の青色成分であるＢ（青）信号が入力される入力端子４０と、
前記入力端子３０、４０と後段の補正手段７０Ｃとの間に介在し接続された補正信号生成手段６０Ｃと、
前記入力端子４０と補正信号生成手段６０Ｃと出力端子１００とに接続された補正手段７０Ｃと、
前記入力端子２０に接続された出力端子８０と、
前記入力端子３０に接続された出力端子９０と、
前記補正手段７０Ｃに接続された出力端子１００とが備えられている。 Next, the image signal correcting unit 10C will be described as an example with reference to FIG.
The image signal correcting means 10C
An input terminal 20 to which an R (red) signal that is a red component of the image signal is input;
An input terminal 30 to which a G (green) signal that is a green component of the image signal is input;
An input terminal 40 to which a B (blue) signal that is a blue component of the image signal is input;
Correction signal generating means 60C interposed between and connected to the input terminals 30 and 40 and the subsequent correcting means 70C;
Correction means 70C connected to the input terminal 40, the correction signal generation means 60C, and the output terminal 100;
An output terminal 80 connected to the input terminal 20;
An output terminal 90 connected to the input terminal 30;
And an output terminal 100 connected to the correcting means 70C.

補正信号生成手段６０Ｃは、
前記入力端子３０、４０と後段の補正手段７０ＣのＢ補正手段７２Ｃとに接続されたＢ補正信号生成手段６２Ｃを備え、
入力されるＧ（緑）信号とＢ（青）信号とに基づき、Ｂ補正信号生成手段６２Ｃが補正信号を生成して補正手段７０ＣのＢ補正手段７２Ｃに出力する。 The correction signal generation means 60C
B correction signal generation means 62C connected to the input terminals 30 and 40 and B correction means 72C of the correction means 70C in the subsequent stage,
Based on the input G (green) signal and B (blue) signal, the B correction signal generation means 62C generates a correction signal and outputs it to the B correction means 72C of the correction means 70C.

補正手段７０Ｃは、
入力端子４０と補正信号生成手段６０ＣのＢ補正信号生成手段６２Ｃと出力端子１００とに接続されたＢ補正手段７２Ｃを備え、
Ｂ補正手段７２Ｃは、入力端子４０からのＢ（青）信号に、Ｂ補正信号生成手段６２Ｃからの補正信号に基づき補正を行い補正後の信号を出力端子１００に出力する。 The correcting means 70C
B correction means 72C connected to the input terminal 40, the B correction signal generation means 62C of the correction signal generation means 60C and the output terminal 100,
The B correction unit 72C corrects the B (blue) signal from the input terminal 40 based on the correction signal from the B correction signal generation unit 62C, and outputs the corrected signal to the output terminal 100.

上記のように構成された画像信号補正手段１０Ｃに、「濃い緑」であるＲ（赤）信号＝０、Ｇ（緑）信号＝２５５、Ｂ（青）信号＝０が入力された際に、少しだけ青を混ぜた色Ｒ（赤）信号＝０、Ｇ（緑）信号＝２５５、Ｂ（青）信号＝５１に補正する場合の説明を行う。   When R (red) signal = 0, G (green) signal = 255, and B (blue) signal = 0, which are “dark green”, are input to the image signal correcting unit 10C configured as described above. A description will be given of a case where correction is made so that the color R (red) signal = 0, G (green) signal = 255, and B (blue) signal = 51 mixed with a little blue.

画像信号補正手段１０Ｃの入力端子２０、３０、４０には、それぞれＲ（赤）信号＝０、Ｇ（緑）信号＝２５５、Ｂ（青）信号＝０が入力される。
入力端子２０には、画像信号の赤色成分であるＲ（赤）信号が入力され、
入力端子３０には、画像信号の緑色成分であるＧ（緑）信号が入力され、
入力端子４０には、画像信号の青色成分であるＢ（青）信号が入力される。
従って、Ｒ（赤）信号は、出力端子８０にて出力され、
Ｇ（緑）信号は、補正信号生成手段６０ＣのＢ補正信号生成手段６２Ｃに入力されると共に出力端子９０にて出力され、
Ｂ（青）信号は、補正信号生成手段６０ＣのＢ補正信号生成手段６２Ｃと補正手段７０ＣのＢ補正手段７２Ｃとに入力される。 R (red) signal = 0, G (green) signal = 255, and B (blue) signal = 0 are input to the input terminals 20, 30, 40 of the image signal correcting means 10C, respectively.
The input terminal 20 receives an R (red) signal that is a red component of the image signal,
The input terminal 30 receives a G (green) signal that is a green component of the image signal,
A B (blue) signal that is a blue component of the image signal is input to the input terminal 40.
Therefore, the R (red) signal is output at the output terminal 80,
The G (green) signal is input to the B correction signal generation unit 62C of the correction signal generation unit 60C and output from the output terminal 90.
The B (blue) signal is input to the B correction signal generation unit 62C of the correction signal generation unit 60C and the B correction unit 72C of the correction unit 70C.

補正信号生成手段６０ＣのＢ補正信号生成手段６２Ｃは、入力されるＧ（緑）信号とＢ（青）信号との値に応じ一意に値が決定される補正信号を生成し、補正手段７０ＣのＢ補正手段７２Ｃに出力する。
尚、Ｂ補正信号生成手段６２Ｃが生成する補正信号の一例として、
ＢＫ１は所望する係数であり一例として２．５、
ＢＫ２は所望する係数であり一例として５、
入力されるＧ（緑）信号をＧ、ただしＧは０〜２５５
入力されるＢ（青）信号をＢ、ただしＢは０〜２５５とするとき、
（Ｇ−（Ｂ×ＢＫ１））が負の値の場合では、生成される補正信号Ｂは０、
（Ｇ−（Ｂ×ＢＫ１））が正の値の場合では、
補正信号Ｂ＝（Ｇ−（Ｂ×ＢＫ１））÷ＢＫ２、
である補正信号Ｂを生成する。
従って、Ｇ（緑）信号の値とＢ（青）信号の値との大小に関連して補正信号の値の大小が決定される補正信号を生成できる。 The B correction signal generation unit 62C of the correction signal generation unit 60C generates a correction signal whose value is uniquely determined according to the values of the input G (green) signal and B (blue) signal. Output to the B correction means 72C.
As an example of the correction signal generated by the B correction signal generation means 62C,
BK1 is a desired coefficient, for example 2.5,
BK2 is a desired coefficient, for example 5,
The input G (green) signal is G, where G is 0 to 255
When the input B (blue) signal is B, where B is 0 to 255,
When (G− (B × BK1)) is a negative value, the generated correction signal B is 0,
When (G− (B × BK1)) is a positive value,
Correction signal B = (G− (B × BK1)) ÷ BK2,
A correction signal B is generated.
Therefore, it is possible to generate a correction signal in which the magnitude of the correction signal value is determined in relation to the magnitude of the G (green) signal value and the B (blue) signal value.

補正手段７０ＣのＢ補正手段７２Ｃは、入力端子４０からのＢ（青）信号に、前記Ｂ補正信号生成手段６２Ｃからの補正信号に基づき補正を行い出力端子１００に出力する。
この例の補正前の信号と補正後の信号との関係の代表値例を図６に示す。 The B correction means 72C of the correction means 70C corrects the B (blue) signal from the input terminal 40 based on the correction signal from the B correction signal generation means 62C, and outputs it to the output terminal 100.
FIG. 6 shows a representative value example of the relationship between the signal before correction and the signal after correction in this example.

次に図３を参照して画像信号補正手段１０Ｄを例に、入力されたＲ（赤）信号、Ｇ（緑）信号、Ｂ（青）信号をＹ（輝度）信号に変換し、そのＹ（輝度）信号の値に応じて、Ｂ（青）信号を補正する場合の説明を行う。   Next, referring to FIG. 3, taking the image signal correction means 10D as an example, the input R (red) signal, G (green) signal, and B (blue) signal are converted into Y (luminance) signals, and the Y ( The case of correcting the B (blue) signal according to the value of the (luminance) signal will be described.

画像信号補正手段１０Ｄは、
画像信号の赤色成分であるＲ（赤）信号が入力される入力端子２０と、
画像信号の緑色成分であるＧ（緑）信号が入力される入力端子３０と、
画像信号の青色成分であるＢ（青）信号が入力される入力端子４０と、
前記入力端子２０、３０、４０と後段の補正手段７０Ｄとに接続された補正信号生成手段６０Ｄと、
前記入力端子４０と補正信号生成手段６０Ｄと後段の出力端子１００とに接続された補正手段７０Ｄと、
前記入力端子２０に接続された出力端子８０と、前記入力端子３０に接続された出力端子９０と、
前記補正手段７０Ｄに接続された出力端子１００とが備えられている。 Image signal correcting means 10D
An input terminal 20 to which an R (red) signal that is a red component of the image signal is input;
An input terminal 30 to which a G (green) signal that is a green component of the image signal is input;
An input terminal 40 to which a B (blue) signal that is a blue component of the image signal is input;
Correction signal generation means 60D connected to the input terminals 20, 30, 40 and the subsequent correction means 70D;
Correction means 70D connected to the input terminal 40, the correction signal generation means 60D, and the output terminal 100 in the subsequent stage;
An output terminal 80 connected to the input terminal 20, an output terminal 90 connected to the input terminal 30, and
And an output terminal 100 connected to the correcting means 70D.

補正信号生成手段６０Ｄは、入力端子２０、３０、４０と後段のＢ補正信号生成手段６２Ｄとに接続され、入力されたＲ（赤）信号、Ｇ（緑）信号、Ｂ（青）信号をＹ（輝度）信号に変換する変換手段６３Ｄと、その変換手段６３Ｄと入力端子４０と後段の補正手段７０ＤのＢ補正手段７２Ｄとに接続されたＢ補正信号生成手段６２Ｄと、を備える。
Ｂ補正信号生成手段６２Ｄは、変換手段６３ＤからのＹ（輝度）信号と入力端子４０から入力されたＢ（青）信号とに基づき、補正信号を生成して補正手段７０ＤのＢ補正手段７２Ｄに出力する。 The correction signal generation means 60D is connected to the input terminals 20, 30, 40 and the B correction signal generation means 62D at the subsequent stage, and the input R (red) signal, G (green) signal, and B (blue) signal are converted to Y. A conversion means 63D for converting into a (luminance) signal, and a B correction signal generation means 62D connected to the conversion means 63D, the input terminal 40, and a B correction means 72D of the subsequent correction means 70D are provided.
The B correction signal generation unit 62D generates a correction signal based on the Y (luminance) signal from the conversion unit 63D and the B (blue) signal input from the input terminal 40, and sends the correction signal to the B correction unit 72D of the correction unit 70D. Output.

補正手段７０Ｄは、前記入力端子４０と補正信号生成手段６０ＤのＢ補正信号生成手段６２Ｄと出力端子１００とに接続されたＢ補正手段７２Ｄを備え、
Ｂ補正手段７２Ｄは、入力端子４０からのＢ（青）信号に、補正信号生成手段６０ＤのＢ補正信号生成手段６２Ｄからの補正信号に基づき補正を行い補正後の信号を出力端子１００に出力する。 The correction unit 70D includes a B correction unit 72D connected to the input terminal 40, the B correction signal generation unit 62D of the correction signal generation unit 60D, and the output terminal 100,
The B correction unit 72D corrects the B (blue) signal from the input terminal 40 based on the correction signal from the B correction signal generation unit 62D of the correction signal generation unit 60D, and outputs the corrected signal to the output terminal 100. .

出力端子８０は、前記入力端子２０に接続され、入力端子２０からの信号を出力する。
出力端子９０は、前記入力端子３０に接続され、入力端子３０からの信号を出力する。
出力端子１００は、前記補正手段７０ＤのＢ補正手段７２Ｄに接続され補正後の信号を出力する。 The output terminal 80 is connected to the input terminal 20 and outputs a signal from the input terminal 20.
The output terminal 90 is connected to the input terminal 30 and outputs a signal from the input terminal 30.
The output terminal 100 is connected to the B correction unit 72D of the correction unit 70D and outputs a corrected signal.

上記のように構成された画像信号補正手段１０Ｄに、それぞれＲ（赤）信号＝１２８（５０％）、Ｇ（緑）信号＝１２８（５０％）、Ｂ（青）信号＝２６（１０％）が入力された際に、Ｂ（青）信号を補正する場合を、図３を参照して説明を行う。   In the image signal correcting means 10D configured as described above, R (red) signal = 128 (50%), G (green) signal = 128 (50%), B (blue) signal = 26 (10%), respectively. A case where the B (blue) signal is corrected when is inputted will be described with reference to FIG.

画像信号補正手段１０Ｄに、それぞれＲ（赤）信号＝１２８（５０％）、Ｇ（緑）信号＝１２８（５０％）、Ｂ（青）信号＝２６（１０％）が入力される。
入力端子２０には、画像信号の赤色成分であるＲ（赤）信号が入力され、
入力端子３０には、画像信号の緑色成分であるＧ（緑）信号が入力され、
入力端子４０には、画像信号の青色成分であるＢ（青）信号が入力される。
Ｒ（赤）信号は、補正信号生成手段６０Ｄの変換手段６３Ｄに入力されると共に出力端子８０にて出力される。
Ｇ（緑）信号は、補正信号生成手段６０Ｄの変換手段６３Ｄに入力されると共に出力端子９０にて出力される。
Ｂ（青）信号は、補正信号生成手段６０ＤのＢ補正信号生成手段６２Ｄと変換手段６３Ｄと補正手段７０ＤのＢ補正手段７２Ｄとに入力される。 R (red) signal = 128 (50%), G (green) signal = 128 (50%), and B (blue) signal = 26 (10%) are input to the image signal correcting means 10D, respectively.
The input terminal 20 receives an R (red) signal that is a red component of the image signal,
The input terminal 30 receives a G (green) signal that is a green component of the image signal,
A B (blue) signal that is a blue component of the image signal is input to the input terminal 40.
The R (red) signal is input to the conversion unit 63D of the correction signal generation unit 60D and output from the output terminal 80.
The G (green) signal is input to the conversion unit 63D of the correction signal generation unit 60D and output from the output terminal 90.
The B (blue) signal is input to the B correction signal generation unit 62D, the conversion unit 63D, and the B correction unit 72D of the correction unit 70D of the correction signal generation unit 60D.

補正信号生成手段６０Ｄの変換手段６３Ｄは、入力端子２０、３０、４０からのＲ（赤）信号、Ｇ（緑）信号、Ｂ（青）信号をＹ（輝度）信号に変換し、Ｂ補正信号生成手段６２Ｄに出力する。
尚、８bit量子化にて表したＲＧＢ信号を、ＹＣｂＣｒ信号に変換する変換式の一例としてＩＴＵ−Ｒ ＢＴ．６０１に規定されている、色変換式のＹ信号に関する式を例として次に示す。
入力されるＲ（赤）信号をＲ、ただしＲは０〜２５５、
入力されるＧ（緑）信号をＧ、ただしＧは０〜２５５、
入力されるＢ（青）信号をＢ、ただしＢは０〜２５５とするとき、
Ｙ＝（７７×Ｒ／２５６）＋（１５０×Ｇ／２５６）＋（２９×Ｂ／２５６）
従って、Ｒ（赤）信号＝１２８、Ｇ（緑）信号＝１２８、Ｂ（青）信号＝２６が入力された際のＹ（輝度）信号の値は、約１１６である。 The conversion means 63D of the correction signal generation means 60D converts the R (red) signal, G (green) signal, and B (blue) signal from the input terminals 20, 30, and 40 into Y (luminance) signals, and the B correction signal. Output to the generating means 62D.
As an example of a conversion formula for converting an RGB signal represented by 8-bit quantization into a YCbCr signal, ITU-R BT. An example of the color conversion formula Y signal defined in 601 is shown below.
R (red) signal input is R, where R is 0-255,
The input G (green) signal is G, where G is 0 to 255,
When the input B (blue) signal is B, where B is 0 to 255,
Y = (77 × R / 256) + (150 × G / 256) + (29 × B / 256)
Accordingly, when the R (red) signal = 128, the G (green) signal = 128, and the B (blue) signal = 26 are input, the value of the Y (luminance) signal is about 116.

補正信号生成手段６０ＤのＢ補正信号生成手段６２Ｄは、変換手段６３ＤからのＹ（輝度）信号の値と入力端子４０からのＢ（青）信号の値とに応じて一意に値が決定される補正信号を生成し補正手段７２Ｄへ出力する。
尚、Ｂ補正信号生成手段６２Ｄが生成する補正信号の一例として、
ＢＫ１は所望する係数であり一例として２．５、
ＢＫ２は所望する係数であり一例として５、
入力端子２０、３０、４０からのＲ（赤）信号、Ｇ（緑）信号、Ｂ（青）信号をＹ（輝度）信号に変換したＹ（輝度）信号をＹ、ただしＹは０〜２５５、
入力されるＢ（青）信号をＢとするとき、
（Ｙ−（Ｂ×ＢＫ１））が負の値の場合では、生成される補正信号Ｂは０、
（Ｙ−（Ｂ×ＢＫ１））が正の値の場合では、生成される補正信号Ｂは、
補正信号Ｂ＝（Ｙ―（Ｂ×ＢＫ１））÷ＢＫ２、
である補正信号を生成する。
従って、補正信号Ｂ＝（（１１６−（２６×２．５））÷５）＝約１０の補正信号を生成する。 The B correction signal generation means 62D of the correction signal generation means 60D is uniquely determined according to the value of the Y (luminance) signal from the conversion means 63D and the value of the B (blue) signal from the input terminal 40. A correction signal is generated and output to the correction means 72D.
As an example of the correction signal generated by the B correction signal generation means 62D,
BK1 is a desired coefficient, for example 2.5,
BK2 is a desired coefficient, for example 5,
Y (luminance) signal obtained by converting the R (red) signal, G (green) signal, and B (blue) signal from the input terminals 20, 30, and 40 into Y (luminance) signal, where Y is 0 to 255,
When the input B (blue) signal is B,
When (Y− (B × BK1)) is a negative value, the generated correction signal B is 0,
When (Y− (B × BK1)) is a positive value, the generated correction signal B is
Correction signal B = (Y− (B × BK1)) ÷ BK2,
A correction signal is generated.
Therefore, the correction signal B = ((116− (26 × 2.5)) ÷ 5) = about 10 correction signals are generated.

補正手段７０Ｄの補正手段７２Ｄは、入力端子４０からのＢ（青）信号に、Ｂ補正信号生成手段６２Ｄからの補正信号に基づき補正を行い出力端子１００へ出力する。
その結果、Ｒ（赤）信号、Ｇ（緑）信号、Ｂ（青）信号を変換したＹ（輝度）信号の値とＢ（青）信号との値とに応じた補正信号で、Ｂ（青）信号を補正することができる。 The correction means 72D of the correction means 70D corrects the B (blue) signal from the input terminal 40 based on the correction signal from the B correction signal generation means 62D, and outputs it to the output terminal 100.
As a result, a correction signal corresponding to the value of the Y (luminance) signal obtained by converting the R (red) signal, the G (green) signal, and the B (blue) signal and the value of the B (blue) signal, ) The signal can be corrected.

この一例の入力信号であるＲ（赤）信号、Ｇ（緑）信号、Ｂ（青）信号と変換したＹ（輝度）信号と補正信号との代表値を表２から表１２に示す。
表２は、Ｒ（赤）信号、Ｇ（緑）信号、Ｂ（青）信号が、０から２５５まで１０％刻みで増加した場合の、Ｙ（輝度）信号と補正信号との値である。

Figure 2008289168
Tables 2 to 12 show typical values of the R (red) signal, the G (green) signal, the B (blue) signal, the converted Y (luminance) signal, and the correction signal, which are input signals of this example.
Table 2 shows values of the Y (luminance) signal and the correction signal when the R (red) signal, the G (green) signal, and the B (blue) signal increase from 0 to 255 in increments of 10%.
Figure 2008289168

表３は、Ｒ（赤）信号＝約２６（１０％）、Ｇ（緑）信号＝約２６（１０％）で、Ｂ（青）信号が、０から約１０２（４０％）まで１０％刻みで増加した場合の、Ｙ（輝度）信号と補正信号との値である。

Figure 2008289168
Table 3 shows that R (red) signal = about 26 (10%), G (green) signal = about 26 (10%), and B (blue) signal from 0 to about 102 (40%) in increments of 10%. This is the value of the Y (luminance) signal and the correction signal when increased by.
Figure 2008289168

表４は、Ｒ（赤）信号＝約５１（２０％）、Ｇ（緑）信号＝約５１（２０％）で、Ｂ（青）信号が、０から約１０２（４０％）まで１０％刻みで増加した場合の、Ｙ（輝度）信号と補正信号との値である。

Figure 2008289168
Table 4 shows that R (red) signal = about 51 (20%), G (green) signal = about 51 (20%), and B (blue) signal from 0 to about 102 (40%) in 10% increments. This is the value of the Y (luminance) signal and the correction signal when increased by.
Figure 2008289168

表５は、Ｒ（赤）信号＝約７７（３０％）、Ｇ（緑）信号＝約７７（３０％）で、Ｂ（青）信号が、０から約１０２（４０％）まで１０％刻みで増加した場合の、Ｙ（輝度）信号と補正信号との値である。

Figure 2008289168
Table 5 shows that R (red) signal = about 77 (30%), G (green) signal = about 77 (30%), and B (blue) signal from 0 to about 102 (40%) in 10% increments. This is the value of the Y (luminance) signal and the correction signal when increased by.
Figure 2008289168

表６は、Ｒ（赤）信号＝約１０２（４０％）、Ｇ（緑）信号＝約１０２（４０％）で、Ｂ（青）信号が、０から約１０２（４０％）まで１０％刻みで増加した場合の、Ｙ（輝度）信号と補正信号との値である。

Figure 2008289168
Table 6 shows that R (red) signal = about 102 (40%), G (green) signal = about 102 (40%), and B (blue) signal from 0 to about 102 (40%) in increments of 10%. This is the value of the Y (luminance) signal and the correction signal when increased by.
Figure 2008289168

表７は、Ｒ（赤）信号＝約１２８（５０％）、Ｇ（緑）信号＝約１２８（５０％）で、Ｂ（青）信号が、０から約１０２（４０％）まで１０％刻みで増加した場合の、Ｙ（輝度）信号と補正信号との値である。

Figure 2008289168
Table 7 shows that R (red) signal = about 128 (50%), G (green) signal = about 128 (50%), and B (blue) signal from 0 to about 102 (40%) in steps of 10%. This is the value of the Y (luminance) signal and the correction signal when increased by.
Figure 2008289168

表８は、Ｒ（赤）信号＝約１５３（６０％）、Ｇ（緑）信号＝約１５３（６０％）で、Ｂ（青）信号が、０から約１０２（４０％）まで１０％刻みで増加した場合の、Ｙ（輝度）信号と補正信号との値である。

Figure 2008289168
Table 8 shows that R (red) signal = about 153 (60%), G (green) signal = about 153 (60%), and B (blue) signal from 0 to about 102 (40%) in increments of 10%. This is the value of the Y (luminance) signal and the correction signal when increased by.
Figure 2008289168

表９は、Ｒ（赤）信号＝約１７９（７０％）、Ｇ（緑）信号＝約１７９（７０％）で、Ｂ（青）信号が、０から約１０２（４０％）まで１０％刻みで増加した場合の、Ｙ（輝度）信号と補正信号との値である。

Figure 2008289168
Table 9 shows that R (red) signal = about 179 (70%), G (green) signal = about 179 (70%), and B (blue) signal from 0 to about 102 (40%) in increments of 10%. This is the value of the Y (luminance) signal and the correction signal when increased by.
Figure 2008289168

表１０は、Ｒ（赤）信号＝約２０４（８０％）、Ｇ（緑）信号＝約２０４（８０％）で、Ｂ（青）信号が、０から約１０２（４０％）まで１０％刻みで増加した場合の、Ｙ（輝度）信号と補正信号との値である。

Figure 2008289168
Table 10 shows that R (red) signal = about 204 (80%), G (green) signal = about 204 (80%), and B (blue) signal from 0 to about 102 (40%) in 10% increments. This is the value of the Y (luminance) signal and the correction signal when increased by.
Figure 2008289168

表１１は、Ｒ（赤）信号＝約２３０（９０％）、Ｇ（緑）信号＝約２３０（９０％）で、Ｂ（青）信号が、０から約１０２（４０％）まで１０％刻みで増加した場合の、Ｙ（輝度）信号と補正信号との値である。

Figure 2008289168
Table 11 shows that R (red) signal = about 230 (90%), G (green) signal = about 230 (90%), and B (blue) signal from 0 to about 102 (40%) in increments of 10%. This is the value of the Y (luminance) signal and the correction signal when increased by.
Figure 2008289168

表１２は、Ｒ（赤）信号＝約２５５（１００％）、Ｇ（緑）信号＝約２５５（１００％）で、Ｂ（青）信号が、０から約１０２（４０％）まで１０％刻みで増加した場合の、Ｙ（輝度）信号と補正信号との値である。

Figure 2008289168
Table 12 shows that R (red) signal = about 255 (100%), G (green) signal = about 255 (100%), and B (blue) signal from 0 to about 102 (40%) in increments of 10%. This is the value of the Y (luminance) signal and the correction signal when increased by.
Figure 2008289168

尚、入力３原色信号を表す量子化ｂｉｔ数は、８ｂｉｔ以外の所望のｂｉｔ数であること、若しくは８ｂｉｔ以外の所望のｂｉｔ数であり、且つ負を表すことが可能なサインビットを備える量子化方法であっても同様な効果が得られる。   Note that the number of quantization bits representing the input three primary color signals is a desired number of bits other than 8 bits, or a desired number of bits other than 8 bits, and a quantization including a sign bit that can represent negative. Even if it is a method, the same effect is acquired.

さらに、実施例で説明に使用したＢＫ１とＢＫ２とＧＫ１とＧＫ２等の係数は、他の所望する値であっても効果が得られる。   Furthermore, even if the coefficients such as BK1, BK2, GK1, and GK2 used for the explanation in the embodiment are other desired values, the effect can be obtained.

補正信号生成手段は、ルックアップテーブル方式であるデジタル化された階調のデータを任意の階調に補正するために入力と出力の対照表を利用することによる所望の補正値により、入力に対する所望の直線的な出力特性とする補正値、さらに入力に対する所望の曲線的な出力特性とする補正値の生成が可能であることであっても一意に値が決定される補正信号を生成でき同様な効果が得られる。   The correction signal generation means uses a desired correction value by using a comparison table of input and output to correct digitized gradation data, which is a look-up table method, to an arbitrary gradation. Even if it is possible to generate a correction value with a linear output characteristic, and a correction value with a desired curvilinear output characteristic for the input, a correction signal whose value is uniquely determined can be generated. An effect is obtained.

又、画像信号で表わされる色空間がｓＲＧＢ表色系と、一意に変換が可能な表色系、例えばＲＧＢＡ表色系、若しくはＹＩＱ表色系、若しくはＹＣｂＣｒ表色系、若しくはＹＰｂＰｒ表色系、若しくはＸＹＺ表色系、若しくはｘｙＹ表色系、若しくはｘｖＹＣＣ表色系、で補正を行うことであっても同様な効果が得られる。   Further, the color space represented by the image signal is an sRGB color system and a color system that can be uniquely converted, for example, an RGBA color system, a YIQ color system, a YCbCr color system, or a YPbPr color system, Alternatively, the same effect can be obtained by performing correction in the XYZ color system, the xyY color system, or the xvYCC color system.

本発明は、入力される画像信号の値に応じて補正をかけるための補正信号を生成する補正信号生成手段と、その補正信号生成手段の補正信号に基づき前記入力される画像信号に補正を加え出力する補正手段と、を備えた画像信号の信号補正手段の動作方法であるため、
Ｒ（赤）信号の値とＧ（緑）信号の値とに応じた補正信号を生成して、Ｇ（緑）信号の補正を行う事や、
Ｒ（赤）信号の値とＢ（青）信号の値とに応じた補正信号を生成して、Ｂ（青）信号の補正を行う事もできる。
さらにＧ（緑）信号とＢ（青）信号との値とに応じた補正信号を生成して、Ｂ（青）信号の補正を行う事ができる。
従って、第１色盲を患う者でも判別が困難であったが、補正を行う事により判別が可能な表示とすることができ、健常者にも違和感の少ない表示を可能とすることを特徴とする表示装置を提供できる。
さらにＲ（赤）信号、Ｇ（緑）信号、Ｂ（青）信号から変換したＹ（輝度）信号とＢ（青）信号の値との値に応じた補正信号を生成して、Ｂ（青）信号の補正を行う事もできる。
従って、加齢と共に低下した青色系統の感度を補うためのＢ（青）信号の補正を行うことにより、高齢者にはＢ（青）信号の値が低い場合ではＢ（青）信号を補正しているため見やすくなり、Ｂ（青）信号の値が高い場合にはＢ（青）信号補正しないため高齢者以外の者にも違和感の少ない画像を表示することができることを特徴とする表示装置を提供できる。 The present invention includes a correction signal generation unit that generates a correction signal for performing correction according to the value of an input image signal, and corrects the input image signal based on the correction signal of the correction signal generation unit. And an operation method of the signal correction means of the image signal provided with the correction means for outputting,
A correction signal corresponding to the value of the R (red) signal and the value of the G (green) signal is generated to correct the G (green) signal;
It is also possible to correct the B (blue) signal by generating a correction signal according to the value of the R (red) signal and the value of the B (blue) signal.
Furthermore, a correction signal corresponding to the values of the G (green) signal and the B (blue) signal can be generated to correct the B (blue) signal.
Accordingly, although it is difficult for a person suffering from the first color blindness to be discriminated, it is possible to obtain a display that can be discriminated by performing correction, and it is possible to provide a display with less discomfort to a healthy person. A display device can be provided.
Further, a correction signal corresponding to the value of the Y (luminance) signal and the B (blue) signal converted from the R (red) signal, G (green) signal, and B (blue) signal is generated, and B (blue) ) Signal correction can also be performed.
Therefore, by correcting the B (blue) signal to compensate for the sensitivity of the blue system that has decreased with age, the B (blue) signal is corrected when the value of the B (blue) signal is low for the elderly. And a display device characterized by being able to display an image with a little uncomfortable feeling to non-elderly people because the B (blue) signal is not corrected when the value of the B (blue) signal is high. Can be provided.

本発明に係る実施の形態例の画像信号補正手段１０Ｂの構成を説明するブロック図である。（実施例１）It is a block diagram explaining the structure of the image signal correction | amendment means 10B of the embodiment which concerns on this invention. Example 1 本発明に係る実施の形態例の画像信号補正手段１０Ｃの構成を説明するブロック図である。（実施例２）It is a block diagram explaining the structure of the image signal correction | amendment means 10C of the embodiment which concerns on this invention. (Example 2) 本発明に係る実施の形態例の画像信号補正手段１０Ｄの構成を説明するブロック図である。（実施例３）It is a block diagram explaining the structure of the image signal correction | amendment means 10D of the embodiment which concerns on this invention. (Example 3) 本発明に係る実施例１の補正前の入力信号に対する補正後の出力信号の関係を表す代表値の例の図である。It is a figure of the example of the representative value showing the relationship of the output signal after correction | amendment with respect to the input signal before correction | amendment of Example 1 which concerns on this invention. 本発明に係る実施例１の補正前の入力信号に対する補正後の出力信号の関係を表す図４以外代表値の例の図である。It is a figure of the example of representative values other than FIG. 4 showing the relationship of the output signal after correction | amendment with respect to the input signal before correction | amendment of Example 1 which concerns on this invention. 本発明に係る実施例２の補正前の入力信号に対する補正後の出力信号の関係を表す代表値の例の図である。It is a figure of the example of the representative value showing the relationship of the output signal after correction | amendment with respect to the input signal before correction | amendment of Example 2 which concerns on this invention.

符号の説明Explanation of symbols

１０Ｂ 画像信号補正手段
１０Ｃ 画像信号補正手段
１０Ｄ 画像信号補正手段
２０ 入力信号Ｒ用入力端子
３０ 入力信号Ｇ用入力端子
４０ 入力信号Ｂ用入力端子
６０Ｂ 補正信号生成手段
６０Ｃ 補正信号生成手段
６０Ｄ 補正信号生成手段
６１Ｂ Ｇ補正信号生成手段
６２Ｂ Ｂ補正信号生成手段
６２Ｃ Ｂ補正信号生成手段
６２Ｄ Ｂ補正信号生成手段
６３Ｄ 変換手段
７０Ｂ 補正手段
７０Ｃ 補正手段
７０Ｄ 補正手段
７１Ｂ Ｇ補正手段
７２Ｂ Ｂ補正手段
７２Ｃ Ｂ補正手段
７２Ｄ Ｂ補正手段
８０ 出力信号Ｒ用出力端子
９０ 出力信号Ｇ用出力端子
１００ 出力信号Ｂ用出力端子 10B Image signal correction means 10C Image signal correction means 10D Image signal correction means 20 Input signal R input terminal 30 Input signal G input terminal 40 Input signal B input terminal 60B Correction signal generation means 60C Correction signal generation means 60D Correction signal generation Means 61B G correction signal generation means 62B B correction signal generation means 62C B correction signal generation means 62D B correction signal generation means 63D Conversion means 70B Correction means 70C Correction means 70D Correction means 71B G correction means 72B B correction means 72C B correction means 72D B correction means 80 Output signal R output terminal 90 Output signal G output terminal 100 Output signal B output terminal

Claims (3)

３原色信号であるＲ（赤）信号、Ｇ（緑）信号、Ｂ（青）信号からなる画像信号を入力するＲ入力端子、Ｇ入力端子、Ｂ入力端子と、
前記Ｒ入力端子とＧ入力端子とに接続され、その入力端子から入力されるＲ（赤）信号とＧ（緑）信号とにより補正をかけるための、Ｇ（緑）信号用の補正信号を生成するＧ補正信号生成手段と、
前記Ｒ入力端子とＢ入力端子とに接続され、その入力端子から入力されるＲ（赤）信号とＢ（青）信号とにより補正をかけるための、Ｂ（青）信号用の補正信号を生成するＢ補正信号生成手段と、を備える補正信号生成手段と、
前記Ｇ補正信号生成手段とＧ入力端子とに接続され、Ｇ補正信号生成手段にて生成された補正信号に基づきＧ入力端子から入力されるＧ（緑）信号の補正を行うＧ補正手段と、
前記Ｂ補正信号生成手段とＢ入力端子とに接続され、Ｂ補正信号生成手段にて生成された補正信号に基づきＢ入力端子から入力されるＢ（青）信号の補正を行うＢ補正手段と、を備える補正手段と、
前記Ｒ入力端子に接続されたＲ（赤）信号を出力するＲ出力端子と、
前記Ｇ補正手段に接続されたＧ（緑）信号を出力するＧ出力端子と、
前記Ｂ補正手段に接続されたＢ（青）信号を出力するＢ出力端子と、を備えた画像信号補正手段の動作方法であって、
当該補正信号生成手段のＧ補正信号生成手段が、入力されるＲ（赤）信号の値とＧ（緑）信号の値とに応じて一意に値が決定される、つまりＲ（赤）信号の値とＧ（緑）信号の値との大小に関連して補正信号の値の大小が決定される補正信号を生成するステップと、
当該補正信号生成手段のＢ補正信号生成手段が、入力されるＲ（赤）信号の値とＢ（青）信号の値とに応じて一意に値が決定される、つまりＲ（赤）信号の値とＢ（青）信号の値との大小に関連して補正信号の値の大小が決定される補正信号を生成するステップと、
当該補正手段のＧ補正手段が、前記Ｇ補正信号生成手段にて生成された補正信号に基づき、入力されたＧ（緑）信号を前記Ｇ補正信号生成手段で生成した補正信号にて補正して、補正後のＧ（緑）信号を出力するステップと、
当該補正手段のＢ補正手段が、前記Ｂ補正信号生成手段にて生成された補正信号に基づき、入力されたＢ（青）信号を前記Ｂ補正信号生成手段で生成した補正信号にて補正して、補正後のＢ（青）信号を出力するステップと、
を実行することを特徴とする画像信号補正手段の動作方法。 An R input terminal, an G input terminal, and a B input terminal for inputting an image signal composed of an R (red) signal, a G (green) signal, and a B (blue) signal, which are three primary color signals;
A correction signal for a G (green) signal is generated which is connected to the R input terminal and the G input terminal and is corrected by an R (red) signal and a G (green) signal input from the input terminal. G correction signal generating means for performing,
A correction signal for a B (blue) signal is generated which is connected to the R input terminal and the B input terminal and is corrected by an R (red) signal and a B (blue) signal input from the input terminal. Correction signal generation means comprising B correction signal generation means for performing,
G correction means connected to the G correction signal generation means and the G input terminal, and for correcting a G (green) signal input from the G input terminal based on the correction signal generated by the G correction signal generation means;
B correction means connected to the B correction signal generating means and the B input terminal, for correcting a B (blue) signal input from the B input terminal based on the correction signal generated by the B correction signal generating means; Correction means comprising:
An R output terminal for outputting an R (red) signal connected to the R input terminal;
A G output terminal for outputting a G (green) signal connected to the G correction means;
A B output terminal for outputting a B (blue) signal connected to the B correction means, and an operation method of the image signal correction means,
The G correction signal generation means of the correction signal generation means determines a value uniquely according to the value of the input R (red) signal and the value of the G (green) signal, that is, the R (red) signal Generating a correction signal in which the magnitude of the value of the correction signal is determined in relation to the magnitude of the value and the value of the G (green) signal;
The B correction signal generation unit of the correction signal generation unit uniquely determines a value according to the value of the input R (red) signal and the value of the B (blue) signal, that is, the R (red) signal. Generating a correction signal in which the magnitude of the value of the correction signal is determined in relation to the magnitude of the value and the value of the B (blue) signal;
The G correction unit of the correction unit corrects the input G (green) signal with the correction signal generated by the G correction signal generation unit based on the correction signal generated by the G correction signal generation unit. Outputting a corrected G (green) signal;
Based on the correction signal generated by the B correction signal generation unit, the B correction unit of the correction unit corrects the input B (blue) signal with the correction signal generated by the B correction signal generation unit. Outputting a corrected B (blue) signal;
The operation method of the image signal correcting means, characterized in that ３原色信号であるＲ（赤）信号、Ｇ（緑）信号、Ｂ（青）信号からなる画像信号を入力するＲ入力端子、Ｇ入力端子、Ｂ入力端子と、
前記Ｇ入力端子とＢ入力端子とに接続され、その入力端子から入力されるＧ（緑）信号とＢ（青）信号とに基づき補正をかけるための、Ｂ（青）信号用の補正信号を生成するＢ補正信号生成手段を備える補正信号生成手段と、
前記Ｂ入力端子とＢ補正信号生成手段とに接続され、Ｂ補正信号生成手段にて生成された補正信号に基づきＢ入力端子から入力されるＢ（青）信号の補正を行うＢ補正手段を備える補正手段と、
前記Ｒ入力端子に接続されたＲ（赤）信号を出力するＲ出力端子と、
前記Ｇ入力端子に接続されたＧ（緑）信号を出力するＧ出力端子と、
前記Ｂ補正手段に接続されたＢ（青）信号を出力するＢ出力端子と、
を備えた画像信号補正手段の動作方法であって、
当該補正信号生成手段のＢ補正信号生成手段が、入力されるＧ（緑）信号の値とＢ（青）信号の値とに応じて一意に値が決定される、つまりＧ（緑）信号の値とＢ（青）信号の値との大小に関連して補正信号の値の大小が決定される補正信号を生成するステップと、
当該補正手段のＢ補正手段が、前記Ｂ補正信号生成手段にて生成された補正信号に基づき、入力されたＢ（青）信号をＢ補正信号生成手段で生成した補正信号にて補正して、その補正後のＢ（青）信号を出力するステップと、
を実行することを特徴とする画像信号補正手段の動作方法。 An R input terminal, an G input terminal, and a B input terminal for inputting an image signal composed of an R (red) signal, a G (green) signal, and a B (blue) signal, which are three primary color signals;
A correction signal for a B (blue) signal, which is connected to the G input terminal and the B input terminal and applies correction based on the G (green) signal and the B (blue) signal input from the input terminal. Correction signal generation means comprising B correction signal generation means for generating;
B correction means connected to the B input terminal and the B correction signal generating means and for correcting the B (blue) signal input from the B input terminal based on the correction signal generated by the B correction signal generating means is provided. Correction means;
An R output terminal for outputting an R (red) signal connected to the R input terminal;
A G output terminal for outputting a G (green) signal connected to the G input terminal;
A B output terminal for outputting a B (blue) signal connected to the B correction means;
An operation method of the image signal correction means comprising:
The B correction signal generation means of the correction signal generation means determines a value uniquely according to the value of the input G (green) signal and the value of the B (blue) signal, that is, the G (green) signal Generating a correction signal in which the magnitude of the value of the correction signal is determined in relation to the magnitude of the value and the value of the B (blue) signal;
The B correction means of the correction means corrects the input B (blue) signal with the correction signal generated by the B correction signal generation means based on the correction signal generated by the B correction signal generation means, Outputting the corrected B (blue) signal;
The operation method of the image signal correcting means, characterized in that ３原色信号であるＲ（赤）信号、Ｇ（緑）信号、Ｂ（青）信号からなる画像信号を入力するＲ入力端子、Ｇ入力端子、Ｂ入力端子と、
前記Ｒ入力端子とＧ入力端子とＢ入力端子とに接続され、その入力端子から入力されるＲ（赤）信号、Ｇ（緑）信号、Ｂ（青）信号からＹ（輝度）信号に変換する変換手段と、その変換手段により変換したＹ（輝度）信号とＢ（青）信号とに基づき補正をかけるための、Ｂ（青）信号用の補正信号を生成するＢ補正信号生成手段と、を備える補正信号生成手段と、
前記Ｂ補正信号生成手段とＢ入力端子とに接続され、Ｂ補正信号生成手段にて生成された補正信号に基づきＢ入力端子から入力されるＢ（青）信号の補正を行うＢ補正手段を備える補正手段と、
Ｒ入力端子に接続されたＲ（赤）信号を出力するＲ出力端子と、
Ｇ入力端子に接続されたＧ（緑）信号を出力するＧ出力端子と、
Ｂ補正手段に接続されたＢ（青）信号を出力するＢ出力端子と、
を備えた画像信号補正手段の動作方法であって、
当該補正信号生成手段の変換手段が、入力端子から入力されるＲ（赤）信号、Ｇ（緑）信号、Ｂ（青）信号をＹ（輝度）信号に変換し、その変換したＹ（輝度）信号を出力するステップと、
当該補正信号生成手段のＢ補正信号生成手段が、入力される画像信号のＲ（赤）信号、Ｇ（緑）信号、Ｂ（青）信号から変換して得られたＹ（輝度）信号の値とＢ（青）信号の値とに応じて一意に値が決定される、つまりＹ（輝度）信号の値とＢ（青）信号の値との大小に関連して補正信号の値の大小が決定される補正信号を生成するステップと、
当該補正手段のＢ補正手段が、前記Ｂ補正信号生成手段にて生成された補正信号に基づき、入力されたＢ（青）信号を前記Ｂ補正信号生成手段が生成した補正信号にて補正して、その補正後のＢ（青）信号を出力するステップと、
を実行することを特徴とする画像信号補正手段の動作方法。 An R input terminal, an G input terminal, and a B input terminal for inputting an image signal composed of an R (red) signal, a G (green) signal, and a B (blue) signal, which are three primary color signals;
The R input terminal, the G input terminal, and the B input terminal are connected to each other, and R (red) signal, G (green) signal, and B (blue) signal input from the input terminals are converted into Y (luminance) signals. A conversion means, and a B correction signal generation means for generating a correction signal for a B (blue) signal for performing correction based on the Y (luminance) signal and the B (blue) signal converted by the conversion means, A correction signal generating means comprising:
B correction means connected to the B correction signal generating means and the B input terminal, for correcting a B (blue) signal input from the B input terminal based on the correction signal generated by the B correction signal generating means. Correction means;
An R output terminal for outputting an R (red) signal connected to the R input terminal;
A G output terminal for outputting a G (green) signal connected to the G input terminal;
A B output terminal for outputting a B (blue) signal connected to the B correction means;
An operation method of the image signal correction means comprising:
The conversion means of the correction signal generation means converts the R (red) signal, G (green) signal, and B (blue) signal input from the input terminal into a Y (luminance) signal, and the converted Y (luminance) Outputting a signal;
The value of the Y (luminance) signal obtained by the B correction signal generation means of the correction signal generation means converted from the R (red) signal, G (green) signal, and B (blue) signal of the input image signal. And the B (blue) signal value are uniquely determined, that is, the magnitude of the correction signal value is related to the magnitude of the Y (luminance) signal value and the B (blue) signal value. Generating a correction signal to be determined;
The B correction unit of the correction unit corrects the input B (blue) signal with the correction signal generated by the B correction signal generation unit based on the correction signal generated by the B correction signal generation unit. Outputting a corrected B (blue) signal;
The operation method of the image signal correcting means, characterized in that
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Publication number Priority date Publication date Assignee Title
KR101179721B1 (en) 2010-11-23 2012-09-04 세종대학교산학협력단 Color conversion method and apparatus for color blindness people using dynamic color transformation

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101179721B1 (en) 2010-11-23 2012-09-04 세종대학교산학협력단 Color conversion method and apparatus for color blindness people using dynamic color transformation

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