JP2003134526A - Apparatus and method for color reproduction - Google Patents
Apparatus and method for color reproductionInfo
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- JP2003134526A JP2003134526A JP2001322234A JP2001322234A JP2003134526A JP 2003134526 A JP2003134526 A JP 2003134526A JP 2001322234 A JP2001322234 A JP 2001322234A JP 2001322234 A JP2001322234 A JP 2001322234A JP 2003134526 A JP2003134526 A JP 2003134526A
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- image
- color
- color chart
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- camera
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- Spectrometry And Color Measurement (AREA)
- Image Processing (AREA)
- Processing Of Color Television Signals (AREA)
- Facsimile Image Signal Circuits (AREA)
- Color Image Communication Systems (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は伝送された画像の色
の再現を行なう色再現装置及び色再現方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a color reproduction device and a color reproduction method for reproducing the color of a transmitted image.
【０００２】[0002]
【従来の技術】現在、高精度情報網の整備により、カメ
ラ等により撮影したカラー画像を、ネットワークを利用
して遠隔地へ即座に伝送することができるようになっ
た。これに伴い医療分野においては、患者の画像情報を
伝送し、該画像情報を基に遠隔地から診断や指示等の医
療行為を行なう遠隔医療の推進が期待されている。2. Description of the Related Art At present, with the improvement of a high-precision information network, it has become possible to immediately transmit a color image taken by a camera or the like to a remote place by using a network. Along with this, in the medical field, it is expected to promote telemedicine in which image information of a patient is transmitted, and based on the image information, medical actions such as diagnosis and instructions are performed from a remote location.
【０００３】遠隔医療における診察においては、カラー
画像を使用し、患者の顔色等、特に肌の色等の微妙に変
化する色情報を得る必要がある。しかしながら、カメラ
により撮影された被写体の画像の色の特性と、眼で直接
観察した被写体の色とは異なるため、撮影され伝送され
た画像を受信側のディスプレイに表示した場合、正確な
色を再現するのは困難であった。In medical examinations in telemedicine, it is necessary to use color images to obtain color information that changes subtly such as the complexion of a patient, especially the skin color. However, because the color characteristics of the image of the subject captured by the camera and the color of the subject directly observed by the eye are different, when the captured and transmitted image is displayed on the receiving side display, accurate color reproduction is possible. It was difficult to do.
【０００４】従来、色再現システムとしては特開２００
０−３４１７１５号公報に示されているように、撮影側
のカメラから被写体の画像と共に撮影証明の情報を取得
し、得られた前記情報に対して演算処理による画像補正
を行ない、前記被写体の画像の色再現を図っていた。A conventional color reproduction system has been disclosed in Japanese Patent Laid-Open No. 200
As disclosed in Japanese Patent Application Laid-Open No. 0-341715, the image of the subject is acquired together with the image of the subject from the camera on the photographing side, and the obtained information is subjected to image correction by arithmetic processing to obtain the image of the subject. I was trying to reproduce the colors.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、前記撮
影証明の情報等を取得し、その補正を行なうためには前
記情報を取得する装置や、取得した情報を解析するため
の装置が必要となり、コストがかかるといった問題があ
る。また、受信側のディスプレイに表示された被写体の
画像の色が、直接観察すると同程度に再現されているか
否かを確認することができないといった問題もあった。However, a device for acquiring the information and a device for analyzing the acquired information are required in order to acquire and correct the information of the photographing certification and the like, and the cost is reduced. There is a problem that it costs. There is also a problem that it is not possible to confirm whether or not the colors of the image of the subject displayed on the receiving side display are reproduced to the same extent when directly observed.
【０００６】そこで本発明の目的は、安価な構成によ
り、伝送された被写体の画像を直接観察すると同程度の
色をもつ画像へ補正する色再現装置及び色再現方法を提
供することである。Therefore, an object of the present invention is to provide a color reproducing apparatus and a color reproducing method, which have an inexpensive structure and corrects an image of a transmitted subject directly to an image having a similar color.
【０００７】[0007]
【課題を解決するための手段】上記目的を達成するため
の、本発明の代表的な構成は、撮像側の撮像カメラによ
り撮影した被写体の画像を受像側のディスプレイに伝送
し、該ディスプレイで表示した前記被写体の画像の色を
再現する色再現装置において、前記撮像側には、複数の
単位色票を有する撮像側色票と、前記撮像側色票を撮影
する撮像カメラとを有し、前記受像側には、前記撮像側
色票と同一の複数の単位色票を有する受像側色票と、前
記ディスプレイ上の色を補正するための補正用カメラと
を有し、前記補正用カメラは、前記ディスプレイ上に表
示された前記撮像側色票と、前記受像側色票との色合わ
せを行なうことにより前記被写体の画像を補正すること
を特徴とする。A typical configuration of the present invention for achieving the above object is to transmit an image of an object photographed by an image pickup camera on an image pickup side to a display on the image pickup side and display it on the display. In the color reproduction device that reproduces the color of the image of the subject, the imaging side has an imaging side color chart having a plurality of unit color charts, and an imaging camera for photographing the imaging side color chart, The image receiving side has an image receiving side color chart having a plurality of unit color charts same as the image capturing side color chart, and a correction camera for correcting the color on the display, and the correction camera, It is characterized in that the image of the subject is corrected by performing color matching between the image pickup side color chart displayed on the display and the image receiving side color chart.
【０００８】上記構成によれば、前記撮像側色票と前記
受像側色票との色合わせを直接行なうため、直接観察と
同程度に色の再現がされているか否かを確認することが
でき、撮像側や受像側の照明等の外部環境がいかなる場
合であっても、前記外部環境にとらわれることなく補正
が可能である。According to the above arrangement, the color chart of the image pickup side and the color chart of the image receiving side are directly matched, so that it is possible to confirm whether or not the color is reproduced to the same extent as the direct observation. In any case, the external environment such as illumination on the imaging side or the image receiving side can be corrected without being restricted by the external environment.
【０００９】[0009]
【発明の実施の形態】（実施形態）本実施形態を図面を
用いて詳細に説明する。図１は色再現装置の全体図であ
り、図２は補正方法のフローチャートである。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS (Embodiment) This embodiment will be described in detail with reference to the drawings. FIG. 1 is an overall view of a color reproduction device, and FIG. 2 is a flowchart of a correction method.
【００１０】図１に示すように、色再現装置Ａにおい
て、被写体Ｓを撮影する撮像側Ｘには、市販のデジタル
カメラ等の撮像カメラ１と、複数の単位色票からなる撮
像側色票２とを有する。また、撮像側Ｘから伝送された
画像を受像する受像側Ｙには、撮像カメラ１に撮影され
伝送された画像を表示するディスプレイ３と、撮像側色
票２と同一の単位色票からなる受像側色票４と、ディス
プレイ３及び受像側色票４を撮影しディスプレイ３上の
画像の補正を行なうデジタルカメラ等の補正用カメラ５
とを有する。As shown in FIG. 1, in the color reproduction apparatus A, an image pickup side X for photographing a subject S has an image pickup camera 1 such as a commercially available digital camera and an image pickup side color chart 2 including a plurality of unit color charts. Have and. On the image receiving side Y, which receives the image transmitted from the image capturing side X, a display 3 that displays the image captured and transmitted by the image capturing camera 1 and an image receiving image that has the same unit color chart as the image capturing side color chart 2 The side color chart 4 and the correction camera 5 such as a digital camera for photographing the display 3 and the image receiving side color chart 4 and correcting the image on the display 3.
Have and.
【００１１】色再現装置Ａの実施においては、まず撮像
側Ｘの撮像カメラ１により被写体Ｓ及び撮像側色票２を
同時に撮影し、撮影された画像を回線を介して受像側Ｙ
に伝送する。そして受像側Ｙにおいて受信された前記画
像は、ディスプレイ３上に被写体Ｓ'及び撮像側色票２'
として表示される。In the implementation of the color reproduction apparatus A, first, the image pickup camera 1 on the image pickup side X photographs the subject S and the image pickup side color chart 2 at the same time, and the photographed images are received on the image receiving side Y via a line.
To transmit. Then, the image received on the image receiving side Y is displayed on the display 3 as the subject S'and the image side color chart 2 '.
Is displayed as.
【００１２】ここで、図２に示すように補正用カメラ５
は、ディスプレイ３上の撮像側色票２'と受像側色票４
との色合わせ12を行い、補正用カメラ５に内蔵されてい
る変換テーブル13を利用して、撮像カメラ１から伝送さ
れた入力画像11の色値補正14を行い、出力画像15をディ
スプレイ３上に表示する。この作業を繰り返すことによ
り被写体Ｓ'の色を、被写体Ｓを直接観察すると同程度
の色に再現する。Here, as shown in FIG. 2, the correction camera 5
Is an image-side color chart 2'and an image-receiving side color chart 4 on the display 3.
Color matching 12 is performed, and the conversion table 13 built in the correction camera 5 is used to perform the color value correction 14 of the input image 11 transmitted from the imaging camera 1, and the output image 15 is displayed on the display 3. To display. By repeating this operation, the color of the subject S ′ is reproduced in the same color as when the subject S is directly observed.
【００１３】尚、色合わせ12の方法においては、補正用
カメラ５によって実際の受像側色票４の色を表示するた
めのＲＧＢ値を取得し、受像側Ｙに伝送された画像内の
撮像側色票２の色を求めたＲＧＢ値に変換して補正す
る。前記変換は色票内の４色を用いて行い、色票が４色
以上の場合は、変換対象となる色ごとに最も近い４色を
選択し、色合わせを行なう。また、色票以外の色の補正
は色票の色の加法混色で表示することにより行なう。In the method of color matching 12, RGB values for displaying the actual colors of the image receiving side color chart 4 are acquired by the correcting camera 5, and the image capturing side in the image transmitted to the image receiving side Y is acquired. The color of the color chart 2 is converted into the obtained RGB value and corrected. The conversion is performed using four colors in the color chart. When the color chart has four or more colors, the closest four colors are selected for each color to be converted and color matching is performed. In addition, the correction of colors other than the color chart is performed by displaying the colors of the color chart as additive colors.
【００１４】これらの構成により、色再現装置Ａは、市
販のデジタルカメラ等の補正用カメラ５以外に画像情報
の取得又は補正をするための装置を必要としないため、
安価な構成となる。また撮像側色票２'と受像側色票４
との色合わせを直接行なうため、伝送された画像につい
て、直接観察と同程度に色の再現がされているか否かを
確認することができ、撮像側Ｘや受像側Ｙの照明等の外
部環境がいかなる場合であっても、前記外部環境にとら
われることなく補正が可能である。このように、安価な
構成により、伝送された被写体Ｓ'の画像を、被写体Ｓ
を直接観察すると同程度の色をもつ画像へ補正すること
ができる。With these configurations, the color reproduction apparatus A does not require any apparatus other than the correction camera 5 such as a commercially available digital camera for acquiring or correcting the image information.
It is an inexpensive structure. In addition, the image side color chart 2'and the image receiving side color chart 4
It is possible to check whether or not the transmitted image has the same color reproduction as the direct observation because the color matching is performed directly with the external environment such as the illumination on the image capturing side X or the image receiving side Y. In any case, the correction can be performed without being caught by the external environment. In this way, the transmitted image of the subject S ′ is converted into the subject S by the inexpensive structure.
By directly observing, it is possible to correct an image having the same color.
【００１５】（他の実施形態）前述した実施形態におい
ては、補正用カメラ５内部の補正手段により色合わせ12
等の補正を行なったが、これに限るものではなく、補正
用カメラ５を使用せず、ディスプレイ３上のＲＧＢ値を
撮像側色票２'と受像側色票４とを人間が見ながら変
え、補正を行ってもよい。(Other Embodiments) In the above-described embodiment, the color matching 12 is performed by the correction means inside the correction camera 5.
However, the present invention is not limited to this, but the correction camera 5 is not used, and the RGB values on the display 3 are changed while the human being views the image-side color chart 2 ′ and the image-receiving side color chart 4. , May be corrected.
【００１６】また、前述した実施形態においては、本発
明を医師が遠方の患者を診断する遠隔医療に使用する色
再現装置として説明したが、診察に限るものではなく、
医用の顕微鏡写真等、細胞等の色の判断が重要な画像を
送る際にも使用することができる。Further, in the above-described embodiment, the present invention has been described as a color reproducing apparatus used in a telemedicine for a doctor to diagnose a distant patient, but the invention is not limited to the medical examination.
It can also be used when sending images in which the judgment of the color of cells is important, such as medical micrographs.
【００１７】また、前述した実施形態においては医療用
に用いた例を紹介したが、これに限るものではなく、美
術品の画像情報、製造或は販売する車の色、電気回線通
信を使用した商品販売又は画像配信、或は画像の記録等
に対して用いても、色情報を正確に再現することで物の
価値を正確に判断することができる。In addition, in the above-mentioned embodiment, an example used for medical purposes was introduced, but the present invention is not limited to this, and image information of a work of art, color of a car to be manufactured or sold, and electric line communication are used. Even when it is used for selling goods, distributing images, or recording images, the value of an object can be accurately determined by accurately reproducing color information.
【００１８】[0018]
【発明の効果】以上のように本発明においては、ディス
プレイ上に表示された撮像側色票と、受像側色票との色
合わせを行なうことにより前記被写体の画像を補正する
ことで、撮像カメラで撮影した被写体の画像の色を再現
する。As described above, according to the present invention, the image of the subject is corrected by performing color matching between the color chart on the image pickup side and the color chart on the image receiving side displayed on the display, whereby the image pickup camera is corrected. Reproduces the color of the image of the subject captured in.
【００１９】受像した画像の被写体の画像の色再現を図
ったため、例えば照明等の様々な情報の演算を行なう装
置を必要としないため安価な構成となり、また、前記撮
像側色票と前記受像側色票とを直接観察しながら色合わ
せを行なうため、直接観察と同程度に色の再現がされて
いるか否かを確認することができ、前記撮像側や前記受
像側の照明等の外部環境がいかなる場合であっても、前
記外部環境にとらわれることなく補正が可能である。こ
のため、伝送された被写体の画像を直接観察すると同程
度の色をもつ画像へ補正することができる。Since the color reproduction of the image of the subject of the received image is achieved, a device for calculating various information such as illumination is not required, resulting in an inexpensive structure. Further, the color chart on the imaging side and the image receiving side are provided. Since color matching is performed while directly observing the color chart, it is possible to confirm whether or not the color is reproduced to the same extent as in direct observation, and the external environment such as the illumination on the imaging side or the image receiving side can be checked. In any case, the correction can be performed regardless of the external environment. Therefore, when the transmitted image of the subject is directly observed, it can be corrected to an image having the same color.
【図１】色再現装置の全体構成図である。FIG. 1 is an overall configuration diagram of a color reproduction device.
【図２】画像補正のフローチャートである。FIG. 2 is a flowchart of image correction.
Ａ …色再現装置 Ｓ …被写体 Ｘ …撮像側 Ｙ …受像側 １ …撮像カメラ ２ …撮像側色票 ３ …ディスプレイ ４ …受像側色票 ５ …補正用カメラ 11 …入力画像 12 …色合わせ 13 …変換テーブル 14 …色値補正 15 …出力画像 A: Color reproduction device S ... Subject X ... Imaging side Y: Image receiving side 1 ... Imaging camera 2 ... Image side color chart 3… Display 4 ... Image side color chart 5 ... Correction camera 11… Input image 12 ... color matching 13… Conversion table 14… Color value correction 15… Output image
───────────────────────────────────────────────────── フロントページの続き (72)発明者 道端 洋介 千葉県流山市東初石３丁目111番地 １Ｂ −202 Ｆターム(参考） 2G020 AA04 AA08 DA05 DA13 DA51 DA65 5B057 CA01 CA08 CB01 CB08 CE17 5C066 AA01 AA03 CA17 EB01 EC01 GA01 KF05 KM01 KM11 5C077 MM27 MP08 PP37 SS06 5C079 HA01 LB02 MA10 MA17 NA03 NA25 ─────────────────────────────────────────────────── ─── Continued front page (72) Inventor Yosuke Michibata Chiba Prefecture Nagareyama City Higashi-Hatsuishi 3-chome 111-1B −202 F-term (reference) 2G020 AA04 AA08 DA05 DA13 DA51 DA65 5B057 CA01 CA08 CB01 CB08 CE17 5C066 AA01 AA03 CA17 EB01 EC01 GA01 KF05 KM01 KM11 5C077 MM27 MP08 PP37 SS06 5C079 HA01 LB02 MA10 MA17 NA03 NA25
Claims (2)
体の画像を受像側のディスプレイに伝送し、該ディスプ
レイで表示した前記被写体の画像の色を再現する色再現
装置において、 前記撮像側には、複数の単位色票を有する撮像側色票
と、前記撮像側色票を撮影する撮像カメラとを有し、 前記受像側には、前記撮像側色票と同一の複数の単位色
票を有する受像側色票と、前記ディスプレイ上の色を補
正するための補正用カメラとを有し、 前記補正用カメラは、前記ディスプレイ上に表示された
前記撮像側色票と、前記受像側色票との色合わせを行な
うことにより前記被写体の画像を補正することを特徴と
する色再現装置。1. A color reproduction device for transmitting an image of an object captured by an imaging camera on the imaging side to a display on the image receiving side and reproducing the color of the image of the object displayed on the display, wherein the imaging side includes: An image receiving side that has an imaging side color chart having a plurality of unit color charts and an imaging camera that captures the imaging side color chart, and an image receiving side that has the same plurality of unit color charts as the imaging side color chart It has a side color chart and a correction camera for correcting the color on the display, and the correction camera includes the imaging side color chart displayed on the display and the image receiving side color chart. A color reproduction device characterized in that the image of the subject is corrected by performing color matching.
受像側において再現する色再現方法において、 撮像側で前記被写体と同時に撮像側色票とを撮影した画
像を、前記受像側において、前記受像側の受像側色票と
前記画像中の前記撮像側色票との色合わせにより色再現
を行なうことを特徴とする色再現方法。2. The color of an image of an object photographed on the imaging side,
In the color reproduction method of reproducing on the image receiving side, an image obtained by photographing the image capturing side color chart at the same time as the subject on the image capturing side is used, and on the image receiving side, the image receiving side color chart of the image receiving side and the image capturing side color in the image. A color reproduction method characterized by performing color reproduction by color matching with a vote.
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|---|---|---|---|
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