KR20110038924A - Display calibration apparatus and method thereof for image quality enhancement using categorizing of image and information of background picture - Google Patents

Abstract

PURPOSE: A display calibration apparatus for image quality enhancement using categorizing of an image and information of a background picture and a method thereof are provided to automatically adopt emotion to every image category in order to improve the image quality recognized by a user by compensating a background screen color. CONSTITUTION: A category discrimination unit classifies a category of an image by suing a header file or EPG(Electronic Program Guide) information of an image. A background image confirmation unit(200) confirms the background screen of an image. A screen adjustment unit(300) adjusts the screen according to the confirmed background screen. Accordingly, a display calibration apparatus changes the background screen color into a preferable color.

Description

DISPLAY CALIBRATION APPARATUS AND METHOD THEREOF FOR IMAGE QUALITY ENHANCEMENT USING CATEGORIZING OF IMAGE AND INFORMATION OF BACKGROUND PICTURE}

The present invention relates to a display adjusting apparatus and a display adjusting method using category and background information of an image for improving image quality.

The display serves as a visual bearer of information that the user receives and recognizes with the eyes through the output device of the display. In the research of display devices, thinning, high image quality, and low power and eco-friendliness are the core, and the dual high definition is focused on the development of technology for improving the performance of physical image quality such as resolution to improve image quality. However, the recent improvements in display performance and the development of image quality technology have improved the performance of physical image quality. However, there is a limit to image quality improvement only by improving the physical image quality that excludes the process of recognizing information from the user's perspective.

Since the human eye perceives and reacts to the emotional vision does not recognize the absolute color value but works differently depending on the surrounding situation or afterimage, the reproduction of the background color of the image is an important factor for the image output device quality performance. The method of improving image quality according to the screen information is not considered. In addition, the conventional display image quality improvement technology does not consider a method of reflecting the emotion required by the content in order to provide a picture quality that satisfies the viewer, and even if the content is in mind, only two to three modes collectively How to adjust the enemy. Even in this case, the user needs to adjust the image quality and must adjust the image quality directly. At the time when digital TV is becoming more common, a broadcast viewing environment of hundreds of channels is being implemented, and manipulating image quality according to various contents for each channel has a very troublesome problem for the user.

The present invention has been proposed to solve the above problems of the conventionally proposed methods, by automatically classifying the category of the image and checking the background information to adjust the screen to automatically reflect different emotions for each category of the image An object of the present invention is to provide a display adjusting device and a display adjusting method for improving image quality by using image category and background image information to improve image quality perceived by a user by correcting a background color.

According to an aspect of the present invention for achieving the above object, a display adjustment device for improving the image quality using the category and the background information of the image,

(1) a category discrimination unit classifying a category of an image;

(2) a background screen check unit for checking a background screen of an image; And

And (3) a screen adjusting unit for adjusting the screen according to the category classified by the category determining unit and the background screen checked by the background screen checking unit.

Preferably, the category determination unit,

Categories may be classified using a header file of an image or electronic program guide (EPG) information of an image.

Preferably, the screen adjustment unit,

The screen may be adjusted using screen adjustment variables that change according to the categorized category and the identified background screen.

More preferably, the screen adjustment variable,

The display may include Hue parameters, Saturation parameters, Lightness parameters, and Gamma parameters.

According to another aspect of the present invention for achieving the above object, a display adjustment method for improving the image quality using the category and the background information of the image,

Adjusting the screen according to the category of the video and the background screen of the video is characterized by its configuration.

Preferably,

(1) transmitting the image information on the category classified by the category determining unit and the background screen checked by the background screen checking unit to the screen adjusting unit;

(2) adjusting the screen by the screen adjusting unit when the image information is transmitted to the screen adjusting unit; And

(3) if the screen is adjusted by the screen adjustment unit, displaying the adjusted image.

More preferably, adjusting the screen may include:

The screen may be adjusted by adding preset weights to the screen adjustment variable according to the category and the wallpaper.

Even more preferably, the weight is

A predetermined value may be added to or subtracted from the screen adjustment variable value to improve the image quality according to the category of the image and the background screen.

According to the present invention, according to the display adjustment device and the display adjustment method for improving the image quality using the image category and background information of the image, the category of the image to automatically adjust the screen by classifying the image category and check the background information By providing a display adjustment device and display adjustment method for improving image quality using category and background information, it automatically reflects different emotions for each category of image and improves image quality perceived by the user by correcting background color. have.

Hereinafter, with reference to the accompanying drawings, it will be described in detail an embodiment of the display adjustment device according to the present invention.

1 is a diagram schematically illustrating an apparatus for adjusting a display for improving image quality using category and background information of an image according to an exemplary embodiment of the present invention. As shown in FIG. 1, a display adjusting apparatus for improving image quality using category and background information of an image includes a category determination unit 100 classifying a category of an image, and a background screen confirming unit checking a background image of the image. And a screen adjusting unit 300 that adjusts the screen according to the category classified by the category determining unit 100 and the background screen checked by the background screen checking unit 200. In addition, the display controller 400 may display a screen adjusted by the screen controller 300.

The category determining unit 100 classifies a category of the received image. The category determination unit 100 may determine various categories of the image by the category determination unit 100, and then adjust the image quality by the screen adjustment unit 300 to sufficiently reflect the emotions required by the contents to improve the image quality. The category of the image may be classified into news, documentary, affection, war and sports.

The category determination unit 100 may classify a category using a header file of an image or electronic program guide (EPG) information of an image. The structure of the video is divided into header and data parts.In the header part, the information of the video file such as file play time, codec information, screen size, and capacity are located, followed by the actual video data. It has a structure so that the categories of images can be classified in the header file. In addition, EPG technically inserts and sends information of a corresponding broadcast between broadcast signals, and a receiver receives this signal with a separate set-top box, and separates EPG information from the broadcast signal, thereby allowing viewers to use it on TV. As shown, the category of the received image may be determined by using the same. When digital TV is becoming more common, broadcast viewing environment of more than hundreds of channels is being implemented. When categorizing categories by using header file of video or EPG information of video, it is possible to present suitable viewing condition for each user without troublesome operation. In addition, an optimization quality may be presented in response to user sensitivity and diverse contents.

The background screen checking unit 200 checks a background screen of the received image. The background screen checking unit 200 may check the background screen of the image and adjust the image quality in the screen adjusting unit 300 to improve the background color, which is an important factor for the image quality performance of the image output device, to a preferred color.

As illustrated in FIG. 1, the screen adjustment unit 300 may adjust the screen by using screen adjustment variables that are changed according to the categorized category and the confirmed background screen. The screen adjusting unit 300 may improve the image quality to a screen that the user prefers by sufficiently reflecting the emotions required differently according to various contents by using screen adjustment variables that change according to the classified category and the confirmed background information. have.

The screen adjustment variable may include a Hue parameter, a Saturation parameter, a Lightness parameter, and a Gamma parameter of the display. These parameters are useful as screen adjustment variables because they are independent of the device and the means by which human vision perceives color. On the other hand, in addition to the four adjustment parameters may include Chroma (Colorfulness), Brightness, and Contrast parameters. In addition, the screen adjustment parameters can be used independently, and several screen adjustment variables can be used together, so that at least two or more can be adjusted at the same time.

Next, an embodiment of the display adjustment method according to the present invention will be described in detail with reference to FIGS. 2 to 4.

2 is a flowchart illustrating a display adjustment method for improving image quality using category and background information of an image according to an exemplary embodiment of the present invention. As shown in FIG. 2, in the display adjustment method for improving image quality using image category and background information, the screen is adjusted according to the category and background information of the image. Regardless of the performance of the display panel, it is possible to provide a user's favorite image by adjusting the screen to an image that is easy to be recognized by the eyes and reflects emotions by using the category and background information of the image. It can improve picture quality.

As shown in FIG. 2, in the display adjustment method for improving the image quality using the category and the background information of an image according to an embodiment of the present invention, first, the category and the background image classified by the category determination unit 100 are checked. The image information regarding the background screen checked by the unit 200 may be transmitted to the screen controller (S100). The category determining unit 100 classifies the category of the image from the received image and checks the background screen in the background screen checking unit 200, and transmits the confirmed information to the screen adjusting unit 300, thereby providing category information and background of the image. Screen information can be used to improve image quality. The category determination unit 100 may classify the image by referring to the program information of the image, etc. The background screen check unit 200 detects the background color from the image of the received image and searches for the background. The distribution range in the image of the screen area can be calculated and identified.

Next, as shown in FIG. 2, when the image information is transmitted to the screen adjustment unit, the screen adjustment unit 300 may adjust the screen (S200). When adjusting the screen, the weights of the screen adjustment variables can be set in advance according to the categorized category and the recognized skin information of the screen, so that the screen adjustment parameters can be changed in various ways. can do. Here, the weight may be added to or subtracted from the screen adjustment variable value to improve the image quality according to the category of the image and the background screen. Subjective and physiological fatigue differences appear according to the categories and backgrounds of images classified as news, documentary, love, war, sports, etc., as in Experiment 1 below. In order to add or subtract a predetermined value to a screen adjustment variable value, weights may be set in advance to improve image quality.

Experimental Example 1

For the purpose of improving the image quality of the display, it is subjective to present 6 images with the image quality adjustment variable to check the effective image quality adjustment variable according to the category and the background in the output device of the display. Physiological fatigue was tested.

The experiment was conducted by 20 male and female college students aged 20 to 27 years and participated in Gamma, Hue, Lightness, and SAT (Saturation) screens in each of the six categories of documentary 1, documentary 2, love, news, sports, and war. Presenting 16 screens after adjusting the image quality adjustment parameters in 5 levels, subjective questionnaires such as discomfort, fatigue and tension, cardiovascular response (PPG), skin temperature response (SKT), tension response (GSR) and pupil reaction The preference was confirmed based on the Gaze System.

3 is a diagram illustrating image quality control variable preferences according to a category and a background of an image according to an exemplary embodiment of the present invention, and in particular, (a), (b), (c), (d), (e), and ( f) are the results of experiments in Documentary 1, Documentary 2, Love, News, Sports, and War categories, respectively. 4 is a diagram illustrating a screen before and after adjusting image quality of documentary 1 and documentary 2 images according to an exemplary embodiment of the present invention. In particular, FIG. 4A is a documentary 1 category of sky and sea background, and FIG. 4B is a view of meadow and desert background. It is a figure which shows the documentary 2 category screen.

As a result of the experiment, as shown in FIG. 3, when the news category increases Blue-Sat by 40% and Skin-Sat by 30%, the Sports category increases Lightness by 30% and Sat by 30%. In the case of 30% increase in Gamma and 30% increase in Skin-Sat, the war category showed high preference value when 30% increase in Sat. In particular, as shown in FIG. 4, the sky and sea background category of Documentary 1 increases Blue-Sat by 40%, and the grassland and desert background category of Documentary 2 has high preference when 40% of Sat is increased. If the image category is the same as that of the image but the background is different, the preference of the image quality adjustment variable is different.

As described above, the image display quality is improved according to the category of the image reproduced on the display device and the background image, and the image display quality is improved due to the relationship with human color nerves that vary depending on the emotion due to the change of color. By classifying the category of the image and checking the background of the image to adjust and display the screen, it is confirmed that the image quality perceived by the user can be improved.

Finally, when the screen is adjusted by the screen controller 300, the adjusted image may be displayed (S300). In step S300 of displaying the adjusted image, the screen is adjusted based on the category classified in the step S200 of adjustment and the checked background information. Make the user aware.

As described above, the display adjustment method for improving the image quality by using the category and the background information of the image according to an embodiment of the present invention, the background identified by the category determination unit 100 and the background screen confirmation unit 200 Transmitting the image information about the screen to the screen adjusting unit (S100), when the image information is transmitted to the screen adjusting unit, adjusting the screen by the screen adjusting unit 300 (S200), and displaying the screen by the screen adjusting unit 300. If adjusted, the method may include displaying the adjusted image (S300). In this case, after classifying the category of the image and confirming the background screen, the information is transmitted to the screen controller (S100), and then the screen may be adjusted using both the category classification information and the confirmed background screen information (S200). In addition, when the background of the image is not confirmed after classifying the category of the image, after transmitting the information to the screen adjusting unit (S100), the screen may be adjusted using only the category information (S200), and the screen may be adjusted ( Even after the display (S200) and the display (S300), if the background screen is confirmed by the background screen check unit 200, the screen can be adjusted again (S200) and display (S300).

The present invention described above may be variously modified or applied by those skilled in the art, and the scope of the technical idea according to the present invention should be defined by the following claims.

1 is a diagram schematically illustrating an apparatus for adjusting a display for improving image quality using category and background information of an image according to an exemplary embodiment of the present invention.

2 is a flowchart illustrating a display adjusting method for improving image quality using category and background information of an image according to an exemplary embodiment of the present invention.

3 is a diagram illustrating image quality adjustment variable preferences according to a category and a background of an image according to an exemplary embodiment of the present invention.

4A is a diagram illustrating a screen before and after image quality adjustment of a documentary image of a sky and sea wallpaper according to an experimental example of the present invention;

4B is a diagram illustrating a screen before and after image quality adjustment of a documentary image of a meadow and a desert wallpaper according to an experimental example of the present invention.

<Explanation of symbols for main parts of the drawings>

100: category determination unit

200: wallpaper check unit

300: screen adjustment unit

400: display unit

Claims (8)

In the display adjustment device for improving the image quality using the image category and background information, (1) a category discrimination unit classifying a category of an image; (2) a background screen check unit for checking a background screen of an image; And (3) a screen adjusting unit for adjusting a screen according to a category classified by the category determining unit and a background screen checked by the background screen checking unit; Display adjustment apparatus for improving the image quality using the category and the background information of the image, comprising a. The method of claim 1, wherein the category determination unit, A display adjustment apparatus for improving image quality by using a category and a background information of an image, wherein the category is classified using a header file of the image or EPG (Electronic Program Guide) information of the image. The display device of claim 1, wherein the screen adjustment unit comprises: And adjusting a screen by using a screen adjustment variable which is changed according to the classified category and the identified background screen. The method of claim 3, wherein the screen adjustment variable, A display control device for improving image quality using category and background information of an image, comprising a Hue parameter, a Saturation parameter, a Lightness parameter, and a Gamma parameter of a display. In the display adjustment method for improving the image quality using the category of the image and the background information, And adjusting the screen according to the category of the image and the background screen of the image. The method of claim 5, (1) transmitting the image information on the category classified by the category determining unit and the background screen checked by the background screen checking unit to the screen adjusting unit; (2) adjusting the screen by the screen adjusting unit when the image information is transmitted to the screen adjusting unit; And And (3) displaying the adjusted image when the screen is adjusted by the screen adjustment unit. The display adjustment method of claim 1, further comprising displaying the adjusted image. The method of claim 6, wherein adjusting the screen comprises: The display adjustment method for improving the picture quality using the category and the background information of the image, characterized in that for adjusting the screen by adding a weight set in advance according to the category and the background screen, respectively. The method of claim 7, wherein the weight is, And a predetermined value is added to or subtracted from a screen adjustment variable value so as to improve the image quality according to the category and the background image of the image.

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