WO2008056680A1 - Dispositif d'ajustement d'image couleur et procédé d'ajustement d'image couleur - Google Patents

Dispositif d'ajustement d'image couleur et procédé d'ajustement d'image couleur Download PDF

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Publication number
WO2008056680A1
WO2008056680A1 PCT/JP2007/071580 JP2007071580W WO2008056680A1 WO 2008056680 A1 WO2008056680 A1 WO 2008056680A1 JP 2007071580 W JP2007071580 W JP 2007071580W WO 2008056680 A1 WO2008056680 A1 WO 2008056680A1
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WO
WIPO (PCT)
Prior art keywords
color
area
adjusting
color image
image
Prior art date
Application number
PCT/JP2007/071580
Other languages
English (en)
Japanese (ja)
Inventor
Haruo Kogane
Original Assignee
Panasonic Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Panasonic Corporation filed Critical Panasonic Corporation
Publication of WO2008056680A1 publication Critical patent/WO2008056680A1/fr

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Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G09G5/02—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the way in which colour is displayed
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/46—Colour picture communication systems
    • H04N1/56—Processing of colour picture signals
    • H04N1/60—Colour correction or control
    • H04N1/62—Retouching, i.e. modification of isolated colours only or in isolated picture areas only
    • H04N1/622—Retouching, i.e. modification of isolated colours only or in isolated picture areas only with simulation on a subsidiary picture reproducer
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/80—Camera processing pipelines; Components thereof
    • H04N23/84—Camera processing pipelines; Components thereof for processing colour signals
    • H04N23/85—Camera processing pipelines; Components thereof for processing colour signals for matrixing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/64—Circuits for processing colour signals
    • H04N9/643—Hue control means, e.g. flesh tone control

Definitions

  • the present invention relates to a camera having a function of displaying a color image obtained by imaging using an imaging element such as a CCD (Charge Coupled Device) on a monitor screen, a computer (so-called personal computer), or the like.
  • the present invention relates to a color image adjustment device and a power image adjustment method suitable for use in a monitor device used.
  • a color image adjustment method has been devised that selects a memory color that is most important in color reproducibility from among the memory colors included in the original image and performs color correction according to the selected memory color (for example, (See Patent Document 1).
  • the user selects the memory color that the user desires the best color reproduction from among the “skin color”, “green”, “sky blue”, and “red” memory colors included in the original image.
  • a technique is disclosed in which color correction is performed according to a selected memory color to form a color image composed of cyan, magenta, and yellow.
  • Patent Document 1 Japanese Patent Laid-Open No. 6-311353
  • the present invention has been made in view of such circumstances, and a color image capable of easily adjusting the color information included in the color image without requiring specialized knowledge or experience.
  • An object is to provide an adjusting device and a color image adjusting method.
  • the color image adjusting apparatus of the present invention includes an area designating unit for designating an area for adjusting color information of a color image displayed on a monitor screen, and a dominant color of the area designated by the area designating unit.
  • Color adjustment means for adjusting the hue and saturation to values according to the amount of user operation, and the color adjustment means adjusts the hue and saturation of the dominant color in the area designated by the area designation means. In this case, it is determined which area of the color matrix the color is in, and when the corresponding area is found, the color matrix processing of that area is adjusted, and then the respective color matrix processes are synthesized.
  • the user can specify a color to be adjusted while viewing a monitor screen displaying a color image, and can adjust the hue and saturation of the specified color.
  • Color information can be adjusted intuitively even if the user has no knowledge or experience.
  • the color image adjustment apparatus of the present invention includes a communication unit that performs communication with a computer that has a CPU and operates the CPU according to a program, and the computer through the communication unit.
  • Control means that enables selection of a color adjustment target area and capture of pixel information or color space determination information of the selected area and adjustment of hue and saturation of a dominant color of the area. .
  • the camera apparatus of the present invention includes an image sensor, and the camera apparatus having an image output function for displaying a color image of a subject imaged by the image sensor on the monitor screen.
  • One of the image adjustment devices is provided.
  • the color image adjustment method of the present invention provides the color of the color image displayed on the monitor screen.
  • An area designating process for designating an area for adjusting information, and in which area of the color matrix the color is included when adjusting the hue and saturation of the dominant color of the area specified in the area designating process.
  • the user can specify a color to be adjusted while viewing a monitor screen displaying a color image, and can adjust the hue and saturation of the specified color.
  • Color information can be adjusted intuitively even if the user has no knowledge or experience.
  • FIG. 1 is an overall configuration diagram of a camera device according to an embodiment of the present invention.
  • FIG. 2 is a block diagram showing a schematic configuration of a camera control device of the camera device according to the embodiment.
  • FIG. 3 is a diagram showing an example of an upper layer setting change menu display by the camera control device of the camera device according to the embodiment.
  • FIG. 4 is a diagram showing an example of a lower layer setting change menu display by the camera control device of the camera device according to the embodiment.
  • FIG. 5 is a diagram showing an example of a color correction selection frame by the camera control device of the camera device according to the embodiment.
  • FIG. 6 is a diagram showing a 12-axis color difference matrix used for color correction by the camera control device of the camera device according to the above embodiment.
  • FIG. 1 is an overall configuration diagram of a camera device according to an embodiment of the present invention.
  • a camera device 10 according to the present embodiment includes a camera 11, a camera control device 12, and a monitor 13.
  • the camera 11 has a camera head 111 and a lens 112, and converts an image incident from the subject 100 into an electrical signal.
  • the camera head 111 has a built-in CCD and a drive circuit for driving the CCD.
  • the lens 112 is in front of the image sensor of the camera head 111. Placed in. Note that, in addition to the CCD, a CMO S force S is used as an image sensor incorporated in the camera head 111. In this embodiment, a CCD is used.
  • the camera control device 12 also functions as a color image adjustment device. As shown in the block diagram of FIG. 2, the pre-processing unit 121, the YC separation process' RGB conversion unit 122, RGB color matrix processing unit 123, gain / phase setting unit 124, area generation unit 125, signal replacement mixing / selection unit 126 for area display, area detection processing unit 127, and color difference detection data addition • average / storage unit 128, a menu character generation unit 129, an external switch 130, a camera synchronization signal generation unit 131, an external communication unit 132, and a control unit 133.
  • the pre-processing unit 121 the YC separation process' RGB conversion unit 122, RGB color matrix processing unit 123, gain / phase setting unit 124, area generation unit 125, signal replacement mixing / selection unit 126 for area display, area detection processing unit 127, and color difference detection data addition • average / storage unit 128, a menu character generation unit 129, an external switch 130, a camera synchronization signal generation unit 131, an external communication
  • the pre-processing unit 121 performs processing such as noise removal on the CCD signal input from the camera 11.
  • YC separation processing 'RGB conversion unit 122 performs signal processing related to photoelectric conversion such as gamma correction and knee correction processing on the CCD signal that has been subjected to processing such as noise removal by the pre-processing unit 121 to obtain a luminance signal ( Separate Y signal) and color signal (C signal). Then, the separated Y signal is input to the signal replacement mixing / selection unit 126 for area display. The color signal is converted to RGB and the RGB signal is input to the RGB color matrix processing unit 123.
  • the RGB color matrix processing unit 123 generates a color difference signal (R—Y and B—Y) from the R GB signal input from the YC separation processing 'RGB conversion unit 122 and inputs it to an image encoder unit (not shown). To do.
  • the gain / phase setting unit 124 sets PHASE (phase shift amount) and GAIN (saturation coefficient) in accordance with the set value from the control unit 133 to the RGB color matrix processing unit 123. In this case, the setting value from which PHASE and GAIN are adjusted is determined by the amount of operation of the camera setting change button 140 (see Fig. 1) in the PHASE and GAIN adjustment menu.
  • pressing the right button updates the setting value in the direction of increasing GAIN
  • pressing the left button sets the setting value in the direction of decreasing GAIN. Is updated.
  • Pressing the up button updates the set value in the direction of increasing PHASE
  • pressing the down button updates the set value in the direction of decreasing PHASE.
  • saturation is also called saturation.
  • the area generation unit 125 generates a display area frame signal based on the area designation coordinates input from the control unit 133 and converts it into an area display signal replacement mixing / selection unit 126 and Color difference detection data addition ⁇ average ⁇ storage unit 128 input.
  • the display area frame signal is This is a signal for displaying the color correction selection frame 20 on the monitor 13 shown in FIG. As will be described later, the size of the color correction selection frame 20 can be set freely.
  • the area display signal replacement mixing / selection unit 126 receives the display area frame signal from the area generation unit 125, mixes the signal with the Y signal from the YC separation processing 'RGB conversion unit 122, Input to an image encoder (not shown).
  • the position of the color correction selection frame 20 is determined according to the coordinate information.
  • the area display switching designated coordinates are determined by the operation amount of the camera setting change button 140 (see FIG. 1) in the menu for moving the color correction selection frame 20.
  • the color correction selection frame 20 moves to the right by pressing the right button of the left and right up / down buttons 141 of the camera setting change button 140, for example, and moves to the left by pressing the left button. Also, it moves upward when the upper button is pressed, and moves downward when the lower button is pressed.
  • the area detection processing unit 127 detects the display area of the complementary color selection frame 20 from the color difference signal from the RGB color matrix processing unit 123 and inputs the result to the color difference detection data addition / average / storage unit 128.
  • the color difference detection data addition / average / storage unit 128 adds the color difference detection data for the area detected by the area detection processing unit 127 based on the display area frame signal input from the area generation unit 125 and calculates the average. And save the result.
  • Menu character generation unit 129 generates character data for menu display in accordance with a character display designation input from control unit 133.
  • the external switch 130 has the camera setting change button 140 described above, and performs operations such as moving the color correction selection frame 20 up and down, left and right, and adjusting PHASE and GAIN.
  • the camera synchronization signal generation unit 131 generates a CCD drive signal for driving the CCD of the camera 11, and generates a synchronization signal for signal processing and a vertical synchronization signal used in the operation of each unit of the apparatus.
  • the external communication unit 132 communicates with an external device (for example, a computer) (not shown), and enables selection of a display area by the external device and capturing of pixel information or color space information of the selected display area. That is, the external device can select the display area and capture the pixel information or color space information of the selected display area.
  • the display area to be selected is not limited to a single display area, and a plurality of display areas can be selected simultaneously.
  • this external communication unit 132 By providing this external communication unit 132, it is possible to perform key operations on the external device side in addition to key operations performed by the camera device 10 alone, increasing the degree of freedom of operation, and interactively using a mouse pointer or GUI.
  • the display area can be selected to correct the color, and the settings of the camera device 10 can be changed and saved.
  • a camera image may be displayed on a computer monitor screen, and the setting change value may be transferred to the camera device 10 after pre-processing on the computer side to cope with the color space.
  • the color space it is possible to provide means for selecting the RGB system, color difference system, etc. according to the user's preference.
  • the control unit 133 controls each unit of the apparatus, and includes a CPU (Central Processing Unit), a program memory in which a control program for operating the CPU is stored, and a RAM ( Random Access Memory) and peripheral ⁇ / ⁇ ( ⁇ ut / Output) for connection to each peripheral part.
  • the control unit 133 designates character display for the menu character generation unit 129 and gives area display switching designation coordinates to the area display signal replacement mixing / selection unit 126. Further, the area designation coordinate is given to the area generation unit 125, and the operation amount is set to the gain / phase setting unit 124 by the camera setting change button 140 of the external switch 130. Also, color difference detection data addition 'average-storage unit 128 reads color space components and luminance levels stored therein.
  • communication with the above-described computer is performed via the external communication unit 132, and the camera device 10 can be controlled by the computer.
  • the area generation unit 125, the area display signal replacement mixing / selection unit 126, the menu character generation unit 129, and the control unit 133 position-selection display composition on the camera screen for the color of the substance that can be confirmed on the monitor 13 screen
  • the means to do is comprised.
  • the control unit 133 reads out the color space component and the luminance level of the corresponding area from the color difference detection data addition “average” storage unit 128, and performs a luminance level within a certain range, a screen area of a certain level or more, and statistical processing.
  • the RGB color matrix processing unit 123 and the gain / phase setting unit 124 constitute variable means that can directly adjust PHASE and GAIN.
  • the menu character generation unit 129 and the control unit 133 constitute means for displaying a list of correction amounts in the respective color correction spaces for each camera device as numerical values.
  • color adjustment processing in the camera control device 12 will be described.
  • the user of the camera device 10 uses the camera control device 12 to correct the dominant color in the area 30 (see FIG. 1) designated by the color correction selection frame 20 of the subject 100 displayed on the screen of the monitor 13.
  • the control unit 133 designates character display in the menu character generation unit 129 in accordance with a user operation, and displays a setting change menu on the monitor 13.
  • Fig. 3 shows an example of a setting change menu created on a character basis.
  • the user confirms the setting change menu displayed on the screen of the monitor 13 and checks the camera device.
  • the control unit 133 displays the color correction selection frame 20 on the monitor 13 as shown in FIG.
  • the size of the color correction selection frame 20 can be selected by pressing the left / right / up / down button 141, the position on the screen, or pressing the confirmation button 142 for a short time / time. For example, when the confirm button 142 is pressed for 1 second or longer, the upper screen is displayed and the color correction selection frame 20 can be selected.
  • the color correction selection frame 20 continues to be displayed, and the size of the color correction selection frame 20 can be corrected any number of times.
  • the dominant target color is determined in the color correction selection frame 20.
  • the selected area of the image is 1
  • it has a statistic for selecting a correction color or color space area. Determine the dominant color in the area of the screen area. This determination makes it possible to perform color determination while preventing errors in color selection with respect to singular color, noise, and pseudo coloring.
  • the user operates the left / right up / down button 141 of the camera setting change button 140 to move the color correction selection frame 20. Then, when the color correction selection frame 20 is moved to a desired area, pressing the release button 142 of the camera setting change button 140 for a short time and releasing it corrects the partial area of the color difference vector space. It becomes possible to do. That is, pressing the “right button” of the left / right up / down button 141 increases the color saturation, pressing the “left button” decreases the color saturation, and pressing the “up button”. The color phase increases, and the color phase decreases when the “down button” is pressed. In order to distinguish between normal decision and cancel in the operation of confirm button 142, press and hold for a long time to select “OK”, and press and release for a short time.
  • the control unit 133 By operating the confirmation button 142 of the camera setting change button 140, the control unit 133 causes the color components (color difference R—Y, color difference —— ⁇ ) of the dominant pixel in the display area specified in the color correction selection frame 20 to be displayed. (Or UV component or RGB component)) from the color difference detection data addition / average / storage unit 128. Then, a predetermined calculation is performed based on the acquired color component, and the color is obtained as a saturation and phase component. In addition, according to this, whether the color difference detection data addition / average / storage unit 128 corresponds to the color difference vector space of the divided region and the divided control target gain and phase register of the RGB color matrix processing unit 123 is determined. Determine and change the value according to the above operation in a specific combination.
  • the change value (or correction value) corresponding to the operation is stored in a non-volatile memory (not shown) such as an EEPROM (Electronically Erasable and Programmable Read Only Memory) as color information after adjustment.
  • EEPROM Electrically Erasable and Programmable Read Only Memory
  • Figure 6 is a graph of the color signal of the specified detection area plotted on the orthogonal axes of R—Y and B—Y, where the angle is the hue and the vector length is the saturation (saturation).
  • Color difference detection data addition ⁇ Average ⁇ Storage unit
  • ⁇ — ⁇ of the display area specified in the color correction selection frame 20 acquired from 128, to which area in FIG.
  • the angle ⁇ is calculated to determine which axis is between which axes. In other words, it is determined which axis of the detected color AXd (color to be changed) is between.
  • axis 3 may not coincide with the R—Y axis.
  • Axis 2 does not have to match the B—Y axis.
  • the color correction selection frame 20 is provided on the screen of the monitor 13 for designating a region where color information adjustment is desired, and this color correction selection frame.
  • the color correction selection frame 20 determines which area of the color matrix the color is in, adjust the color matrix process when the corresponding area is found, and adjust the process Subsequently, since the respective color matrix processes are synthesized, the user can perform color adjustment intuitively without having specialized knowledge.
  • a color image adjustment device since the external communication unit 132 that performs communication with an external device such as a computer is provided, and the control unit 133 enables area designation and color adjustment by the external device, a color image adjustment device The degree of freedom of operability can be improved as compared with the case of a single unit.
  • a mouse pointer or GUI Graphic User Interface
  • GUI Graphic User Interface
  • the adjusted color information is held in a nonvolatile memory such as an EEPROM, it can be given to another camera device or computer by the external communication unit 132.
  • the adjusted color information can be reproduced even when the power is turned off.
  • a correction amount list means for displaying a list of correction amounts in each color correction space for each camera device as a list is provided so as to be compatible with a plurality of camera devices.
  • the setting change may be transferred to the camera device 10 for adjustment after the correspondence is pre-processed on the computer side.
  • the color space may be provided with means for selecting the RGB method, the color difference method, etc. according to the user's preference.
  • the present invention has an effect that adjustment of color information included in a color image being picked up can be easily performed without requiring specialized knowledge and experience.
  • the present invention can be applied to a camera having a function of displaying a color image obtained by imaging using an image element on a monitor, or a monitor device used in a computer or the like.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Processing Of Color Television Signals (AREA)
  • Facsimile Image Signal Circuits (AREA)

Abstract

Cette invention propose de résoudre le problème de la fourniture d'un dispositif d'ajustement d'image couleur et d'un procédé d'ajustement d'image couleur dans lesquels les informations de couleur comprises dans une image couleur peuvent être facilement ajustées sans faire appel à des connaissances ou à une expertise technique. Un dispositif d'ajustement d'image couleur est composé d'une trame (20) de sélection de correction de couleur pour désigner une région désirée pour ajuster des informations de couleur sur un moniteur (13) et, lorsqu'il change une couleur dans la région désignée par la trame (20) de sélection de correction de couleur, le dispositif d'ajustement d'image couleur détermine à quelle région dans une matrice de couleur la couleur appartient. Lorsque le dispositif d'ajustement d'image couleur trouve la région correspondant à la couleur, il ajuste un procédé de matrice de couleur et, après l'ajustement du procédé, synthétise les procédés de matrice de couleur, respectivement. Ainsi, des utilisateurs peuvent intuitivement effectuer les ajustements de couleur sans avoir de connaissances techniques.
PCT/JP2007/071580 2006-11-07 2007-11-06 Dispositif d'ajustement d'image couleur et procédé d'ajustement d'image couleur WO2008056680A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2006-301328 2006-11-07
JP2006301328 2006-11-07

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WO2008056680A1 true WO2008056680A1 (fr) 2008-05-15

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05300367A (ja) * 1992-04-20 1993-11-12 Fuji Xerox Co Ltd 色補正方法
JP2003101803A (ja) * 2001-09-21 2003-04-04 Nikon Corp 信号処理装置
JP2006173837A (ja) * 2004-12-14 2006-06-29 Toshiba Corp 映像再生装置及び映像再生方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05300367A (ja) * 1992-04-20 1993-11-12 Fuji Xerox Co Ltd 色補正方法
JP2003101803A (ja) * 2001-09-21 2003-04-04 Nikon Corp 信号処理装置
JP2006173837A (ja) * 2004-12-14 2006-06-29 Toshiba Corp 映像再生装置及び映像再生方法

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