KR20140077071A - Image processing apparatus and method - Google Patents

Image processing apparatus and method Download PDF

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Publication number
KR20140077071A
KR20140077071A KR1020120145815A KR20120145815A KR20140077071A KR 20140077071 A KR20140077071 A KR 20140077071A KR 1020120145815 A KR1020120145815 A KR 1020120145815A KR 20120145815 A KR20120145815 A KR 20120145815A KR 20140077071 A KR20140077071 A KR 20140077071A
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KR
South Korea
Prior art keywords
color
image
input
display
display unit
Prior art date
Application number
KR1020120145815A
Other languages
Korean (ko)
Inventor
지봉일
Original Assignee
엘지이노텍 주식회사
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.)
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Publication date
Application filed by 엘지이노텍 주식회사 filed Critical 엘지이노텍 주식회사
Priority to KR1020120145815A priority Critical patent/KR20140077071A/en
Publication of KR20140077071A publication Critical patent/KR20140077071A/en

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00Details of television systems
    • H04N5/222Studio circuitry; Studio devices; Studio equipment ; Cameras comprising an electronic image sensor, e.g. digital cameras, video cameras, TV cameras, video cameras, camcorders, webcams, camera modules for embedding in other devices, e.g. mobile phones, computers or vehicles
    • H04N5/225Television cameras ; Cameras comprising an electronic image sensor, e.g. digital cameras, video cameras, camcorders, webcams, camera modules specially adapted for being embedded in other devices, e.g. mobile phones, computers or vehicles
    • H04N5/232Devices for controlling television cameras, e.g. remote control ; Control of cameras comprising an electronic image sensor
    • H04N5/23216Control of parameters, e.g. field or angle of view of camera via graphical user interface, e.g. touchscreen
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00Details of colour television systems
    • H04N9/04Picture signal generators
    • H04N9/07Picture signal generators with one pick-up device only
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00Details of colour television systems
    • H04N9/64Circuits for processing colour signals
    • H04N9/73Circuits for processing colour signals colour balance circuits, e.g. white balance circuits, colour temperature control
    • H04N9/735Circuits for processing colour signals colour balance circuits, e.g. white balance circuits, colour temperature control for picture signal generators

Abstract

Disclosed are an image processing apparatus and a method thereof. By an embodiment of the present invention, the image processing apparatus and the method thereof control a display unit in order to display a pallet which includes a color which corresponds to the color of a selection area by receiving a first input which selects the selection area which includes a predetermined color, and adjust an RGB gain in order to make the color of the selection area correspond to a color (selection color) which is similar with the color of the selection area in the pallet by receiving a second input which selects the selection color.

Description

[0001] IMAGE PROCESSING APPARATUS AND METHOD [0002]

The present invention relates to an image processing apparatus and method.

In general, white balance refers to a preset adjustment of color balance in order to allow the camera module to accurately reproduce colors. The white balance is a function that adjusts the camera lens to a white color and adjusts the gain of red / green.blue ) Is called white balance.

In the conventional camera module, the white point is detected under various light source environments such as daylight, the sky, and the room, and the white balance is adjusted by adjusting the RGB gain of the sensor so that the saturation of the white point is removed.

However, in such a conventional camera module, there is a problem that proper white balance can not be achieved when there is no reference white point in the input image.

1 is an exemplary diagram illustrating white balance in a conventional camera module.

Fig. 1 (a) shows a case where there is a white point A as a reference, and when the surrounding color is similar to the naked eye image, but when there is no white point as shown in Fig. 1 (b) Able to know.

As described above, in the conventional camera module, when there is no white point as a reference, proper white balance is not achieved and the overall color feeling of the image is distorted.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and it is an object of the present invention to provide an image processing apparatus and a method for adjusting a color gamut of a captured image, And an image processing apparatus and method for outputting an image similar to a human eye.

According to an aspect of the present invention, there is provided an image processing method comprising: displaying an image; Receiving a first input for selecting a selection region including a predetermined color; Displaying a palette containing a color corresponding to a color of the selection region; Receiving a second input from the palette to select a color (selected color) similar to the color of the selection region; And adjusting the RGB gain so that the color of the selection area and the selected color coincide with each other.

In one embodiment of the present invention, the method may further include performing a correction to apply the adjusted RGB gain to the entire image, thereby displaying the corrected image.

In one embodiment of the present invention, the method may further include storing the corrected image.

In an embodiment of the present invention, the step of adjusting the RGB gain when the selection area includes a plurality of colors may adjust the RGB gain such that the color most dominantly displayed in the selection area matches the selection color .

In one embodiment of the present invention, the first input may be a touch-drag input.

According to another aspect of the present invention, there is provided an image processing apparatus comprising: a display unit for displaying an image; And a first input for selecting a selection area containing a predetermined color, and controlling the display section to display a palette including a color corresponding to the color of the selection area, And a controller for receiving a second input for selecting a color (selected color), and adjusting the RGB gain so that the color of the selected area matches the selected color.

In one embodiment of the present invention, the control unit may perform the correction to apply the adjusted RGB gain to the entire image, thereby controlling the display unit to display the corrected image.

In one embodiment of the present invention, the image processing apparatus may further include a storage unit for storing the corrected image.

In one embodiment of the present invention, when the selection region includes a plurality of colors, the controller may adjust the RGB gain such that the color most dominantly displayed in the selection region coincides with the selected color.

In an embodiment of the present invention, the control unit may control the display unit to display a message for prompting a user to select a selection area.

In an embodiment of the present invention, the control unit may control the display unit to display the palette at a position close to the selection area.

In one embodiment of the present invention, the control section can control the display section so that the pallet displays the entire color held therein.

In an embodiment of the present invention, the control unit may control the display unit to display a color similar to a color of the selection area.

In one embodiment of the present invention, the first input may be a touch-drag input.

The effect of correcting the color of the image so that the color of the region selected by the user is the same as the color selected on the palette and displaying an image similar to the color that the user confirms with the naked eye even when there is no white point capable of adjusting the white balance have.

1 is an exemplary diagram illustrating white balance in a conventional camera module.
2 is a configuration diagram of an image processing apparatus according to an embodiment of the present invention.
FIG. 3 is a diagram illustrating an example of a user inputting method according to an embodiment of the present invention. Referring to FIG.
4 is a flowchart illustrating an image processing method according to an embodiment of the present invention.

While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings and will herein be described in detail. It should be understood, however, that the invention is not intended to be limited to the particular embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

2 is a configuration diagram of an image processing apparatus according to an embodiment of the present invention.

As shown in the figure, the image processing apparatus 1 of the embodiment of the present invention includes a control unit 10, a display unit 20, a user input unit 30, and a storage unit 40, 2 under a specific light source.

The image processing apparatus 1 according to an embodiment of the present invention is provided in a mobile terminal such as a smart phone, a tablet computer, a notebook computer, And may process an image input from the camera module or may be provided to a digital camera to process an image input from a camera module incorporated in the digital camera. However, the present invention is not limited thereto, and may be applied to any terminal capable of receiving an image from an external or internal camera or camera module and processing the image.

The display unit 20 displays an image received from the camera module 2 so that the user can view the image, and the image processed by the control unit 10 can be displayed. The display unit 20 may be a liquid crystal display (LCD), a thin film transistor-liquid crystal display (TFT-LCD), an organic light-emitting diode (OLED) a flexible display, and a 3D display.

The user input unit 30 receives an input for selecting a predetermined region for image processing from the user and receives an input for selecting the same color as the predetermined region with respect to the palette information presented by the control unit 10. [

In the case where the display unit 20 and the sensor (touch sensor) for sensing the touch operation have a mutual layer structure (touch screen), the display unit 20 may be implemented as an input device, that is, a user input unit 30 . The touch screen technology is well known in the technical field to which the present invention belongs, and a detailed description thereof will be omitted.

The storage unit 40 may temporarily store images received by the user from the camera module 2 and store the image processed by the user in accordance with the color selected by the control of the control unit 10. [

The control unit 10 controls the display unit 20 to display an image received from the camera module 2 and receives a selection input for an area for white balance adjustment from the user. At this time, the selection input for the area for adjusting the white balance may be an input that the user selects by the touch-drag method.

FIG. 3 is a view for explaining a method of inputting by a user according to an embodiment of the present invention, in which a video processing apparatus of an embodiment of the present invention is provided to a mobile terminal.

As shown in the figure, the control unit 10 controls the display unit 20 to display an image received from the camera module 2, and when there is no white point as shown in FIG. 1B, (Not shown) to allow the user to select a certain area for color correction. Alternatively, if it is desired to correct the color of the image by the user's selection, a message may be displayed (not shown) for the user to select a certain area.

When the user selects the predetermined area B from the image by the touch-drag input, the control unit 10 can display the pallet C including a plurality of colors. The pallet C may display the entire color held by the control unit 10, but may display a portion including a color similar to the color of the selected region B.

When the user selects a point (selection color, D) for displaying the same color as the color of the selection area B on the pallet C by the touch input, the control unit 10 controls the color of the selection area B and the palette The RGB gain can be determined so that the color of the selected color D of the pixel C matches.

When the user selects the selection area B from the image by the touch-drag input, the selection area B may include one color. However, if a plurality of colors are included, And compare it with the selected color (D).

Then, the controller 10 applies the determined RGB gain to the entire image, so that the user can output an image of a color similar to the color seen by the user even in an environment where white balance is difficult.

The control unit 10 may perform image processing of the preview image received from the camera module 2 according to an embodiment of the present invention and may perform image processing of the image stored in the storage unit 40 according to an embodiment of the present invention . In the case of performing the image processing of the embodiment of the present invention with respect to the preview image, the display unit 20 may be controlled to perform image processing and preview color-corrected images.

4 is a flowchart illustrating an image processing method according to an embodiment of the present invention.

As shown in the figure, an image processing method of an embodiment of the present invention can display an image received from the camera module 2 or stored in the storage unit 40 on the display unit 20 (S41). When the image received from the camera module 2 is directly displayed, it can be displayed in a preview format.

When the control unit 10 determines that it is necessary to adjust the white balance of the image or receives an input requesting adjustment of the white balance from the user (S42), the control unit 10 receives an input for selecting a predetermined region of the image from the user S43). 3, the control unit 10 can display the palette C on the display unit 20 (S44).

The control unit 10 can display the palette C near the selection area B so that the user can compare colors.

If a color matching the color of the selected area B is selected from the palette C by the user, the selection input for the selected color D can be received (S45).

Thereafter, the control unit 10 adjusts the RGB gain so that the color of the selected region B coincides with the selected color D (S46), applies the adjusted RGB gain to the entire image, and corrects the color of the image (S47). The control unit 10 can display the color-corrected image on the display unit 20 (S48).

As described above, according to the embodiment of the present invention, even if there is no white point capable of adjusting the white balance by correcting the color of the image so that the color of the area selected by the user is the same as the color selected on the palette, It is possible to display an image similar to the color to be confirmed.

While the invention has been shown and described with reference to certain preferred embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. Accordingly, the true scope of the present invention should be determined by the following claims.

1: image processing device 2: camera module
10: control unit 20: display unit
30: user input unit 40: storage unit

Claims (14)

  1. Displaying an image;
    Receiving a first input for selecting a selection area containing a predetermined color;
    Displaying a palette containing a color corresponding to a color of the selection region;
    Receiving a second input from the palette to select a color (selected color) similar to the color of the selection region; And
    And adjusting the RGB gain so that the color of the selection region and the selected color coincide with each other.
  2. The method according to claim 1,
    And performing a correction to apply the adjusted RGB gain to the entire image, thereby displaying the corrected image.
  3. 3. The method of claim 2,
    And storing the corrected image.
  4. 2. The method of claim 1, wherein adjusting the RGB gain when the selection region includes a plurality of colors comprises:
    Wherein the RGB gain is adjusted so that the color most dominantly displayed in the selected region coincides with the selected color.
  5. 2. The method of claim 1, wherein the first input is a touch-drag input.
  6. A display unit for displaying an image; And
    Wherein the control unit controls the display unit to display a palette including a color corresponding to the color of the selection area, and receives a first input for selecting a selection area including a predetermined color, And a second input for selecting a second color (a selected color), and adjusting the RGB gain so that the color of the selected area and the selected color coincide with each other.
  7. 7. The apparatus of claim 6,
    And performs a correction to apply the adjusted RGB gain to the entire image, thereby controlling the display unit to display the corrected image.
  8. 8. The method of claim 7,
    And a storage unit for storing the corrected image.
  9. The image processing apparatus according to claim 6, wherein, when the selection region includes a plurality of colors, the control unit adjusts the RGB gain such that a color displayed most dominantly in the selection region coincides with the selected color.
  10. 7. The apparatus of claim 6,
    And controls the display unit to display a message prompting the user to select a selection area.
  11. 7. The apparatus of claim 6,
    And controls the display unit to display the palette at a position close to the selection area.
  12. 7. The apparatus of claim 6,
    And controls the display unit so that the palette displays the entire color held by the palette.
  13. 7. The apparatus of claim 6,
    And controls the display unit so that the palette displays a color similar to the color of the selected area.
  14. 7. The apparatus according to claim 6, wherein the first input is a touch-drag input.
KR1020120145815A 2012-12-13 2012-12-13 Image processing apparatus and method KR20140077071A (en)

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KR1020120145815A KR20140077071A (en) 2012-12-13 2012-12-13 Image processing apparatus and method

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017119571A1 (en) * 2016-01-07 2017-07-13 엘지전자 주식회사 Digital device, and system and method for controlling color using same
CN107852447A (en) * 2015-10-21 2018-03-27 谷歌有限责任公司 Make the exposure and gain balance at electronic equipment based on equipment moving and scene distance

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107852447A (en) * 2015-10-21 2018-03-27 谷歌有限责任公司 Make the exposure and gain balance at electronic equipment based on equipment moving and scene distance
WO2017119571A1 (en) * 2016-01-07 2017-07-13 엘지전자 주식회사 Digital device, and system and method for controlling color using same
US10594992B2 (en) 2016-01-07 2020-03-17 Lg Electronics Inc. Digital device, and system and method for controlling color using same

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