KR102627785B1 - Photo Correction Device and Driving Method Thereof - Google Patents

Abstract

The present invention relates to a photo correction device and a method of operating the device. The driving method of the photo correction device according to an embodiment of the present invention includes a) a communication interface receiving a captured image from a camera, and b) a control unit receiving a captured image from an analog camera when there is a user command. It may include a step of automatically correcting and providing a correction based on a preset correction value in relation to the Polaroid color of the film color that can be realized.

Description

Photo Correction Device and Driving Method Thereof}

The present invention relates to a photo correction device and a method of driving the device. More specifically, the present invention relates to a photo correction device and a method of driving the device. More specifically, the present invention relates to a photo correction device, such as a photo booth in an unmanned photo studio, a self-photo studio system, or a photo system, which creates a photo with analog-like Polaroid color. It relates to a photo correction device that can be printed and a method of operating the device.

Recently, the number of unmanned photo studios that operate unmanned and allow subjects to take selfies in various poses is increasing. The unmanned photo studio is equipped with several independent shooting booths, and each shooting booth has a camera for shooting, a display that displays the captured images and various explanations for operation, a printer that prints the captured images and videos, and cash or card. A photo kiosk device with an integrated payment unit for payment is installed. These unmanned photo studios allow you to take selfies in a variety of poses without worrying about what others might think, so they are increasing in line with the trend of the times that emphasizes individuality.

Above all, as the camera market has recently shifted from analog cameras to digital cameras, the number of users who miss analog sensibility is increasing. Digital cameras have overcome the disadvantage of regular film cameras, which is that they cannot be viewed quickly, and have overcome the biggest weakness of Polaroid cameras and general film cameras, which is the high cost of film. Accordingly, it gave users the appeal of saving a lot of money.

However, digital cameras also have their weaknesses. It has many shortcomings in taking detailed pictures like a regular film camera. In particular, the dissatisfaction among photographers and enthusiasts is growing, and in this regard, there is a need for a way to preserve the existing analog sensibility through photos taken with digital cameras.

Korean Patent Publication No. 10-0490405 (May 11, 2005) Korean Patent Publication No. 10-2160092 (2020.09.21) Korean Patent Publication No. 10-2550518 (2023.06.28)

The technical problem to be achieved by the present invention is to enable a photo booth such as an unmanned photo studio, a self-photo studio system, or a photo system to generate and output photos with analog-like Polaroid colors.

The problem to be solved by the present invention is not limited to the problems mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the description below.

A method of driving a photo correction device according to an embodiment of the present invention for achieving the above problem includes the steps of a communication interface unit receiving a captured image from a camera, and a control unit receiving the received captured image when there is a user command. It includes the step of providing automatic correction based on a preset correction value in relation to the Polaroid color of the film color that can be implemented in an analog camera.

The automatic correction step may include displaying a Polaroid item on the screen when a request is made to edit the captured image, and automatically correcting the captured image with a preset correction value when the Polaroid item is selected.

In the automatic correction step, when automatically correcting the captured image to Polaroid color, the automatic correction may be performed with different correction values depending on the type of correction device.

The automatic correction step may use different correction values depending on the type of the correction device, the type of camera, the resolution of the smartphone, and whether it is a printer or a printer.

The automatic correction step provides a user interface screen for directly setting a correction value for the Polaroid color upon user request, and the correction value input to the user interface screen can be used during the automatic correction.

The step of using the correction value input to the user interface screen during the automatic correction is to set a correction value of the Polaroid color by selecting a total of five values in the first area corresponding to the Curve1 control point on the user interface screen. Setting values of P1 (0, 0), P2 (57, 57), P3 (117, 117), P4 (174, 174), and P5 (255, 255) set for each control point (here, values in parentheses) represents the gray scale value), the dark area is set to 60, the middle area is 1.08, and the light area is set to 255 in the second area corresponding to the level, and the third area corresponds to balance. In the above, cyan and red are set to 10, magenta and green are set to 0, and yellow and blue are set to -8, in the fourth area corresponding to the Curve2 control point. Setting values of P1 (0, 0), P2 (77, 86), P3 (120, 120), and P4 (254, 200) set for each of the four control points (where the values in parentheses represent the gray level values) ) can be used.

According to an embodiment of the present invention, service competitiveness can be achieved by further providing a Polaroid-type correction service that can express photos in various ways, for example, in a shooting booth of an unmanned photo studio.

In addition, according to an embodiment of the present invention, even if it is not an unmanned photo studio, it is possible to satisfy various needs of users by correcting the photos taken by the user through an internal program such as an application (e.g., a photo correction application) even through a digital camera or smartphone. You will be able to.

1 is a block diagram showing the detailed structure of a photo correction device according to an embodiment of the present invention.
FIGS. 3A to 7D are diagrams for explaining Polaroid color correction (or generation) performed in the image correction unit of FIG. 1.
FIG. 8 is a flowchart showing the driving process of the photo correction device of FIG. 1.

Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings.

The embodiments of the present invention described below are provided to explain the present invention more clearly to those skilled in the art, and the scope of the present invention is not limited by the examples below. The embodiment may be modified in several different forms.

The terms used herein are used to describe specific embodiments and are not intended to limit the invention. As used herein, singular terms may include plural forms unless the context clearly indicates otherwise. Additionally, as used herein, the terms "comprise" and/or "comprising" refer to the term "comprise" and/or "comprising" that specifies the presence of the mentioned shapes, steps, numbers, operations, members, elements and/or groups thereof. and does not exclude the presence or addition of one or more other shapes, steps, numbers, operations, members, elements and/or groups thereof. In addition, the term "connection" used in this specification not only means that certain members are directly connected, but also includes indirectly connected members with other members interposed between them.

In addition, when a member is said to be located “on” another member in the present specification, this includes not only the case where a member is in contact with another member, but also the case where another member exists between the two members. As used herein, the term “and/or” includes any one and all combinations of one or more of the listed items. In addition, terms such as “about” and “substantially” used in the specification herein are used in the sense of a range or close to the numerical value or degree, taking into account unique manufacturing and material tolerances, and to aid understanding of the present application. Precise or absolute figures provided for this purpose are used to prevent infringers from taking unfair advantage of the stated disclosure.

Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings. The size or thickness of areas or parts shown in the attached drawings may be somewhat exaggerated for clarity of specification and convenience of explanation. Like reference numerals refer to like elements throughout the detailed description.

1 is a block diagram showing the detailed structure of a photo correction device according to an embodiment of the present invention.

As shown in FIG. 1, the photo correction device 100 according to an embodiment of the present invention includes part or all of a communication interface unit 110, a control unit 120, an image correction unit 130, and a storage unit 140. Includes.

Here, “including part or all” means that the photo correction device 100 is configured by omitting some components, such as the storage unit 140, or that some components, such as the image correction unit 130, are configured by the control unit 120. ), etc., and is explained as being all-inclusive to facilitate a sufficient understanding of the invention.

Prior to a detailed description, the photo correction device 100 according to an embodiment of the present invention may include various devices. For example, the photo correction device 100 can be used to correct various types of images taken through cameras such as digital cameras, smartphones, printers (or multi-function printers) carried by users, and computers that perform Photoshop operations, that is, photos. It includes a device, and of course, the photo correction device 100 according to an embodiment of the present invention further includes a server of an online platform that provides photo correction services by receiving photos from smartphones held by a large number of users online. can do.

The communication interface unit 110 may receive images captured by a camera or the like. Of course, the captured image may be a photo attached to a document, etc. The communication interface unit 110 can receive photo images in various types of file formats (or still image data) such as jpg, png, or pdf and transmit them to the control unit 120. For example, most electronic devices treat the photographic image as an electronic file, or still image data, and may output the electronic file, or image data, in the form of a single still image on the screen.

For example, in the case of a terminal device such as a smartphone or a photography booth provided in an unmanned photo studio, the communication interface unit 110 may receive images captured by the camera of the smartphone or the camera of the photography booth. In addition, the communication interface unit 110 can receive photo files stored in a storage medium such as USB, and in the case of a server located in a remote location, it can receive and process electronic files of photo images through a private communication network, etc. . Of course, in this process, the photo image may undergo data compression, or encoding, and data restoration, or decoding. Of course, if shooting and photo correction operations are performed in the same device, such as a mobile phone camera or a photography booth, separate encoding/decoding operations may be omitted.

The control unit 120 may temporarily store a photo image received through the communication interface unit 110 in the storage unit 140 and then retrieve the photo image and provide the photo image to the image correction unit 130 for photo correction. Additionally, the control unit 120 may store the photo image corrected by the image correction unit 130 to the Polaroid color desired by the user in a separate folder. Here, Polaroid refers to a form that reflects analog sensibility, that is, Polaroid color, as shown in (b) of FIG. 2. Polaroid can mean creating the same feeling as a photographic image taken with a conventional Polaroid camera through color correction. The control unit 120 may participate in these operations in conjunction with the image correction unit 130.

For example, if the image taken by users at an unmanned photo studio such as Four Cuts of Life is the same as (a) in FIG. 2, the image correction unit 130 will set the image to (a) in FIG. 2 according to a preset data value. ) can be automatically corrected to automatically create a Polaroid-like photo image as shown in (b) of FIG. 2. Correction to Polaroid color in the embodiment of the present invention will be discussed in more detail later.

The control unit 120 may perform an operation to output, for example, a file of a photo image corrected to Polaroid color, that is, data, through a printer or a photo printer. Of course, even in the case of a printer or multi-function printer, it is possible to display a color correction item, that is, a Polaroid item according to an embodiment of the present invention, in the menu item, correct the color through this, and then print it out immediately. Control unit 120 may be involved in these operations.

The image correction unit 130 may perform an operation to correct an input photo image, for example, a photo image as in (a) of FIG. 2, into a photo image as in (b) of FIG. 2 in which Polaroid color is reflected. . Of course, if there is a user command through the user interface, the image correction unit 130 can perform a photo correction operation according to the command. To this end, the image correction unit 130 may correct the color of the photo by reflecting preset data values to correct the photo image to reflect the Polaroid color, or automatically adjust the luminance of the color, that is, the gray level. In other words, every color can have 256 gradations. Each color has a gradation value from 0 to 255. Therefore, for example, in the case of red (R), the brightest red and darkest red can be seen when the gradation is 0 and 255. It is common to display the darkest color when the gradation is 255, but depending on the image implementation method of the video display device (e.g. normally black or normally white mode operation, etc.), the darkest color may be displayed when the gradation is 0. In the embodiments of the present invention, there will be no particular limitation to any one form.

The image correction unit 130 according to an embodiment of the present invention may have a different correction area depending on the type of photo correction device 100 in which the correction operation is performed. In other words, the types of devices that currently perform correction include correction with Polaroid color through an LCD panel, correction with Polaroid color through an (O)LED panel, and correction with Polaroid color through a small screen such as a printer. The image correction unit 130 is also capable of performing corrections in consideration of various environments, such as presetting different values and performing corrections for photo printing based on these values. Of course, this may be preceded by initially adjusting the gamma value to express colors closer to the original color. As a type of device, different correction values may be used depending on the type of camera, resolution of the smartphone (e.g. 10 inches, 17 inches, etc.), and whether it is a printer or printer.

Users can preset image correction values customized to them and operate to correct photo images based on this. For example, when you bring up a photo on the screen and perform an editing operation, you can select the Polaroid item on the screen. At this time, the correction value entered by the user is preset in the corresponding Polaroid item. For example, in the case of converting the same photo to Polaroid color, users can select the type they like considering their device type, such as Type 1, Type 2, or Type 3, and set the correction value of the selected type as default. When there is a request to correct photos after setting the photo to Polaroid color, the value is continuously used. Of course, if the user changes the type, the correction value of the changed type can be reset to default.

The image correction unit 130 may be equipped with a program for image correction and execute it under the control of the control unit 120. The program may also include apps. When the user selects an edit item after recalling a captured image stored in memory, a Polaroid (or analog sensibility) item for converting the photo to Polaroid color may be displayed on the screen. When selecting the corresponding item, the image correction unit 130 can automatically convert the pixel values of the photo on the screen based on preset data values, such as color curve values, to create a photo with an analog feel. Of course, in this process, the image correction unit 130 can provide layouts in various formats that make the border area of the photo feel like the border of a picture frame, and users can select the format they want and place the photo they want within it. You can capture analog sensibility and then request a print of the photo.

Additionally, the image correction unit 130 may operate to allow users to directly set correction values for the desired Polaroid color. For this purpose, a user interface screen can be provided to set correction values on the screen. For example, in Photoshop, users can call up images and work on designs directly, and users can use photos that have just been taken on a smartphone or digital camera. Try correcting it yourself. Of course, rather than correcting the photo directly, you can automatically set the correction value you want by adjusting the color curve, such as gamma value. Through this process, users can obtain Polaroid photos in the format they want. For example, in the case of photographers, enthusiasts, designers who can handle color, and even engineers who manufacture cameras, they themselves set correction values for conversion to Polaroid color and then create the desired photo accordingly. It is possible to obtain as much as you want.

The storage unit 140 may temporarily store various types of data and information processed under the control of the control unit 120 of FIG. 1. For example, the storage unit 140 can receive data of a photograph taken for image correction under the control of the control unit 120, temporarily store it, and provide the data to the image correction unit 130 for image correction. there is.

In addition to the above, the communication interface unit 110, control unit 120, image correction unit 130, and storage unit 140 of FIG. 1 can perform various operations, and related contents may continue to be discussed later. For more detailed information, I would like to replace them with those contents.

The communication interface unit 110, control unit 120, image correction unit 130, and storage unit 140 of FIG. 1 according to an embodiment of the present invention are composed of hardware modules that are physically separated from each other, but each module has an internal It will be possible to store software to perform the above operations and execute it. However, the software is a set of software modules, and each module can be formed of hardware, so there will be no particular limitation on the configuration of software or hardware. For example, the storage unit 140 may be hardware, such as storage or memory. However, since it is possible to store information through software (repository), the above content will not be specifically limited.

Meanwhile, as another embodiment of the present invention, the control unit 120 may include a CPU and memory, and may be formed as a single chip. The CPU includes a control circuit, an arithmetic unit (ALU), an instruction interpretation unit, and a registry, and the memory may include RAM. The control circuit performs control operations, the operation unit performs operations on binary bit information, and the command interpretation unit includes an interpreter or compiler, which can convert high-level language into machine language and machine language into high-level language. , the registry may be involved in software data storage. According to the above configuration, for example, at the beginning of the operation of the photo correction device 100, the program stored in the image correction unit 130 is copied, loaded into memory, that is, RAM, and then executed, thereby speeding up the data operation processing speed. can be increased. In the case of deep learning models, they can be loaded into GPU memory rather than RAM and executed by accelerating the execution speed using GPU.

Meanwhile, the photo correction device 100 of FIG. 1 according to an embodiment of the present invention automatically corrects the Polaroid color, for example, in relation to correcting a photo taken with a digital camera to have the same feeling as if it was taken with an analog camera, It may also be possible to apply intelligent deep learning programs. For example, data related to analog photos produced and released by celebrities or specific photo studios can be collected on the web. In addition, pixel analysis of the photos can be performed, and through this, it may be possible to obtain and automatically set correction values related to Polaroid color. In this case, the photo correction device 100 may form a list of rankings related to Polaroid automatic correction through photo statistics based on pixel analysis, and then recommend items with the most popular correction values from users on the app. . For example, in the case of an image correction app, items 1 to 3 related to analog sensibility can be presented and the photo can be automatically corrected so that the user can feel analog sensibility based on the correction value set as default for a specific item.

FIGS. 3A to 7D are diagrams for explaining Polaroid color correction performed in the image correction unit of FIG. 1.

For convenience of explanation, referring to FIGS. 3A to 7D together with FIG. 1, the image correction unit 130 of FIG. 1 may, when an image correction command is received from a user who wishes to correct an image, for example, call up a photo and select it from the edit menu on the screen. If you select the Polaroid correction button, it may be possible to automatically correct to the default preset value. Of course, users can also directly set data values related to Polaroid color conversion through the user interface screen for color correction. Of course, this work may correspond to the work of designers who design programs for image correction operations that reflect Polaroid colors according to the embodiment of the present invention, and it is also possible for designers who can handle colors such as Photoshop to set them. You can.

For example, the image correction unit 130 according to an embodiment of the present invention may display an interface screen for image correction as shown in FIGS. 3A to 3C when a user requests to set an image correction value. The interface screen for Polaroid color correction includes a first area 300 related to the first curve (curve 1), a second area 310 related to level change, and a first area related to balance as shown in FIGS. 3A to 3C. It may be configured to include three areas 320 and a fourth area 330 related to the second curve. The first area 300 is an area for setting the control point of the first curve, and as shown in Figures 4a to 4e, it can be seen that the input and output values change according to the control of the curve. The level of the second area 310 may simply be related to adjustment of color brightness, contrast, etc. When both ends of the first curve are dragged, the brightness of the image may change accordingly. For example, if you drag the upper part of the first curve (255 gray level) to the left, the brightness of the image becomes brighter, and if you drag the lower part of the first curve (0 gray level area) to the right, the image becomes darker. . In this way, when both ends of the first curve are dragged to the left and right, the corresponding input and output values are adjusted and displayed on the screen.

Additionally, you can try grabbing the middle part of the first curve and moving it. After correcting the image by adjusting the lines, you can adjust the image by selecting it again, that is, adding control points. The second curve in the fourth area 330 may be related to the control of the curve, and unlike the level, the curve adds control points to enable more detailed image correction. The biggest difference between levels and curves is that while levels are related to color control of the overall image, curves allow for more detailed image correction.

As described above, in an embodiment of the present invention, a correction value for correcting a photographic image to have a Polaroid color desired by the user is provided in the first area 300 to the fourth area 330 on the user interface screen for photo image correction. can be defined. Of course, it is possible for the user to define or set the correction value directly, but in the embodiment of the present invention, the values of Polaroid items 1 to 4 are preset programmatically and the Polaroid photo is taken with the correction value of the item selected by the user. , and through this, subsequent photos can be automatically changed to the items selected by the user.

More specifically, in an embodiment of the present invention, in order to generate Polaroid color, a total of 5 control points in the first area 300, as shown in FIGS. 4A to 4D, are adjusted for P1 (0, 0) and P2 (57, 57), respectively. ), P3 (117, 117), P4 (174, 174), and P5 (255, 255). Additionally, in the second area 310, the level value can be set to 60 for the dark area, 1.08 for the middle area, and 255 for the bright area. In the third area 320, the balance value can be set to 10 for cyan and red, 0 for magenta and green, and -8 for yellow and blue. Accordingly, for example, red and yellow values may be more emphasized. In addition, in the fourth area 330, P1 (0, 0), P2 (77, 86), P3 (120, 120), and P4 (254, 200) can be set respectively. Here, the values in parentheses in the first area 300 and the fourth area 330 indicate gray values, and the input and output indicate the x-axis value and the y-axis value, respectively.

As explained earlier, there can be various ways to automatically correct photos taken with smartphones, digital cameras, and photo booths such as unmanned photo studios to have Polaroid color. For example, when designing a program such as an app, the designer creates a Polaroid item and directly sets color-related correction values for it. In this case, the photo can be automatically corrected using the correction value set as default in the program. Accordingly, an analog sensibility can be created. In the case of photographer enthusiasts or designers who deal with color, if they want to create an analog sensibility in a photo using the correction value they set themselves, it may be possible to set the correction value directly through the user interface screen. In other words, the user directly defines the correction value. Furthermore, in an embodiment of the present invention, data related to Polaroid color photos available on the web is collected and analyzed to obtain a correction value. For example, if a photo of a certain celebrity expressed in Polaroid colors is popular, the correction value is obtained through pixel analysis of the photo, and the photo is corrected by reflecting this. Of course, this operation may be reflected in a program mounted within the photo correction device 100, such as a photo correction app, and the service may be provided to users.

FIG. 8 is a flowchart showing the driving process of the photo correction device of FIG. 1.

Referring to FIG. 8 together with FIG. 1 for convenience of explanation, the photo correction device 100 according to an embodiment of the present invention receives an image captured by a camera (S800). Here, receiving a captured image can be interpreted in various ways, but for example, it is a case where a shooting operation using a camera and a correction operation for the photo are performed in the same device, such as a smartphone or an unmanned photography booth at a photo studio. In addition, in the case of a computer or a server, for example, a computer is connected to a storage medium where photos are stored (e.g. USB, smartphone, etc.) and the captured images are provided, while in the case of a server, the captured images are provided by connecting to a server online. This is the case. In an embodiment of the present invention, receiving a captured image may include all of the above meanings.

In addition, the photo correction device 100 automatically corrects the received image to have the same or similar color as the photo taken by the Polaroid camera according to the user's command (S810). Here, Polaroid color can be interpreted in various ways, but as shown in (b) of FIG. 2, the overall screen atmosphere is dark, but it can mean a color conversion that feels like it was taken with a Polaroid camera. Polaroid photos give the same feeling as when taken with an analog camera. In the case of digital cameras, the color expression of the pixels that make up the image of a photograph is not detailed (for example, due to data sampling processing that processes pixel values as average values), but in the case of analog cameras, the color expression is diverse. In this respect, it is possible to create an atmosphere similar to that taken with an analog camera through Polaride correction in photos taken with recent digital cameras. Therefore, Polaroid color can be defined as film color that cannot be felt in a digital camera. Conversely, it could be defined as the film color that can be realized in an analog camera.

Therefore, users can take a photo with a smartphone, etc., then load and edit the photo. Of course, it is also possible to use a separate correction app in the process. When a Polaroid item is selected on the screen during the editing process, automatic correction can be made to Polaroid color. Of course, Polaroid color is preset by default on the app, so for example, the values related to the color curve described above are pre-stored and based on this, in other words, the photo image on the screen is automatically corrected based on the values of the preset color curve. You can convert it into a photo with a Polaroid feel. Of course, it is possible to own photos with an analog feel by automatically correcting photos taken with a digital camera to Polaride color not only on smartphones, but also in photo booths at unmanned photo studios, and by printing the photos.

To create a Polaroid-colored photo, a frame can be selected on the screen by the user interface. Here, the frame refers to selecting a format with a white frame-like border around the edge of the photo to give it a Polaroid feel. These frames provide layouts in various formats, allowing users to select the desired format. The captured image can then be corrected, and the photos corrected to have this Polaroid color can be output by placing them in the corrected images frame (or folder). For example, printing could be done through a photo printer located in the photography booth of an unmanned photo studio.

Of course, in the embodiment of the present invention, when printing photos corrected with Polaroid color, it is possible to search for printers recognized in the surrounding area and transmit photo image data to the printer set by the search to perform printing or printing. It may be possible. Of course, the data transmission can be done through short-distance wireless communication such as Bluetooth, and printing is done on paper, but prints are printed on photo paper, so a Polaroid-like photo can be output.

In addition to the above, the photo correction device 100 of FIG. 1 can perform various operations, and other details have been sufficiently explained previously, so these will be replaced.

Even though all the components constituting the embodiment of the present invention are described as being combined or operating in combination, the present invention is not necessarily limited to this embodiment. That is, as long as it is within the scope of the purpose of the present invention, all of the components may be operated by selectively combining one or more of them. In addition, although all of the components may be implemented as a single independent hardware, a program module in which some or all of the components are selectively combined to perform some or all of the combined functions in one or more pieces of hardware. It may also be implemented as a computer program having. The codes and code segments that make up the computer program can be easily deduced by a person skilled in the art of the present invention. Such computer programs can be stored in non-transitory computer readable media and read and executed by a computer, thereby implementing embodiments of the present invention.

Here, a non-transitory readable recording medium refers to a medium that stores data semi-permanently and can be read by a device, rather than a medium that stores data for a short period of time, such as a register, cache, or memory. . Specifically, the above-described programs may be stored and provided on non-transitory readable recording media such as CD, DVD, hard disk, Blu-ray disk, USB, memory card, ROM, etc.

Although embodiments of the present invention have been described above with reference to the attached drawings, those skilled in the art will understand that the present invention can be implemented in other specific forms without changing its technical idea or essential features. You will be able to understand it. Therefore, the embodiments described above should be understood in all respects as illustrative and not restrictive.

110: communication interface unit 120: control unit
130: image correction unit 140: storage unit
300: first area 310: second area
320: Third area 330: Fourth area

Claims (2)

a) a communication interface unit receiving a captured image from a camera; and
b) a step in which the control unit automatically corrects and provides the received captured image based on a preset correction value in relation to the Polaroid color of the film color that can be implemented in an analog camera when there is a user command from the user;
In step b) above,
The control unit,
In order to set the correction value for the Polaroid color, P1 (0, 0), P2 (57, 57), and P3 ( Setting values of 117, 117), P4 (174, 174), and P5 (255, 255) (where the values in parentheses indicate grayscale values), dark areas set respectively on the second area corresponding to the level is 60, the middle area is 1.08, and the bright area is set at 255, cyan and red are set at 10, magenta and green are set at 0, respectively, in the third area corresponding to balance, and Yellow and blue have a setting value of -8, P1(0, 0), P2(77, 86), respectively set for 4 control points in the fourth area corresponding to the Curve2 control point. A method of driving a photo correction device using the setting values of P3 (120, 120) and P4 (254, 200) (where the values in parentheses represent grayscale values).
According to paragraph 1,
After performing step b) above,
A method of driving a photo correction device, characterized in that it further comprises the step of adjusting the correction value according to the type and resolution of the camera.