KR100784181B1 - Broadcasting receiving apparatus for having function of specific color emphasis and the same method - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention [0002] The present invention relates to a broadcast receiving apparatus and method having a function of highlighting a specific color selected by a user. According to a preferred embodiment of the present invention, the emphasis color information is received from a user and the image data is separated from the received broadcast signals, and the image data and the emphasis color information are converted into hue components of the HSI color space. And if the color tone components corresponding to the enhancement color information are identical to each other, the image processing unit processes the black and white image. Therefore, according to the present invention, only the color information corresponding to the specific color information selected by the user can be emphasized and expressed.

Image processing, specific color,

Description

TECHNICAL FIELD [0001] The present invention relates to a broadcasting receiving apparatus having a specific color emphasizing function and a broadcasting receiving apparatus having the same,

1 is a block diagram showing a multimedia data reproducing apparatus according to a preferred embodiment of the present invention.

2 is an illustration of an HSI color space according to a preferred embodiment of the present invention.

FIGS. 3A through 5A are illustrations and color illustrations of an arbitrary color space according to an HSI space according to a preferred embodiment of the present invention; FIGS.

FIG. 6 is a flowchart illustrating a process in which a broadcast receiving apparatus according to an exemplary embodiment of the present invention emphasizes only specific color information corresponding to highlight color information selected by a user.

7 is an exemplary view of a screen being output through a display unit according to a preferred embodiment of the present invention;

8 is a view illustrating a menu screen for receiving highlight color information according to an exemplary embodiment of the present invention, which is output through a display unit.

Description of the Related Art

110: tuner

115: decoder

120:

125:

130:

135: Input unit

140:

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a broadcast receiving apparatus, and more particularly, to a broadcast receiving apparatus having a function of emphasizing a specific color selected by a user.

Generally, a color correction device is a device that corrects the phase and size of an input color signal to the same phase and size as a color signal output to a cathode ray tube. Such a color correction apparatus separates RGB signals from color signals constituting a video signal input from a broadcasting station or a VTR, calculates positions of the RGB signals on the color coordinates, and outputs r and g signals. The output r and g are divided into a certain range by the coordinate axes of the r, g and b signals, and R ', G' and B 'are calculated and corrected.

Such a conventional color correction apparatus can only perform correction to output the same color signal as that input from a video apparatus, and thus can not perform a function of emphasizing a specific color selected by the user.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a broadcast receiving apparatus and a broadcast receiving apparatus having a specific color emphasizing function capable of expressing only color information corresponding to specific color information selected by a user, And to provide such a method.

It is another object of the present invention to provide a broadcast receiving apparatus and a method thereof having a specific color emphasizing function that can reduce unnecessary arithmetic operations by converting specific color information selected by a user into hue components of HSI color space.

Other objects of the present invention will be readily understood from the following description of the embodiments.

According to an aspect of the present invention, there is provided a broadcast receiving apparatus and method capable of bypassing a color corresponding to specific color information selected by a user, and processing other colors in black and white.

According to a preferred embodiment of the present invention, there is provided a broadcast receiving apparatus comprising: an input unit for receiving broadcast channel channel selection commands and highlight color information from a user; A tuner for detecting only a broadcast signal corresponding to the broadcast channel tuning command among a plurality of broadcast signals; A decoder for separating image data from the TS stream detected and input from the tuner; And converting the image data and the emphasized color information into a hue component of the HSI color space, bypassing if the hue component corresponding to the image data matches a hue component corresponding to the emphasized color information, A broadcast receiving apparatus including an image processing unit for receiving a broadcast program.

The image processing unit may convert the luminance component (Y component) of the image data to 128 if the tincture component corresponding to the enhanced color information does not match the tincture component corresponding to the image data.

The image processing unit may convert the image data and the enhanced color information into hue components of the HSI color space using the following equation.

Here, H is data representing a color tone component, and Cb and Cr may be color difference information.

The image processing unit may convert the image data and the enhanced color information into hue components of the HSI color space using the following equation.

Here, H is data representing a color tone component, and R, G, and B may be color information, respectively.

According to another aspect of the present invention, there is provided a method for emphasizing only specific colors selected by a user in a broadcast receiving apparatus.

According to a preferred embodiment of the present invention, there is provided a method of highlighting and outputting only a specific color selected by a user in a broadcast receiving apparatus, the method comprising: receiving a broadcast channel tuning command from a user; Extracting a TS stream by detecting only a broadcast signal corresponding to the broadcast channel selection command; Separating the video data, the audio data, and the additional data from the TS stream, respectively, and decoding and outputting the separated data; Receiving highlight color information from the image data from the user; Processing the color included in the emphasized color information by bypassing and colors other than the emphasized color information in black and white; And a step of outputting the converted image data.

Converting the highlight color information into a hue component of an HSI color space; Converting the image data into a hue component of an HSI color space; And

Comparing the hue component of the image data with the hue component of the enhanced color information, bypassing the hue component of the image data, and changing the luminance component of the image data to 128 if they do not match.

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

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the same or corresponding components will be described with reference to the accompanying drawings.

FIG. 1 is a block diagram of a broadcast receiving apparatus having a specific region emphasizing function according to a preferred embodiment of the present invention. FIG. 2 is an exemplary view of an HSI color space according to an exemplary embodiment of the present invention. FIG. 5B is a table illustrating exemplary colors and hues of an arbitrary color space according to the HSI space according to a preferred embodiment of the present invention.

1, a broadcast receiving apparatus 100 having a specific area enhancement function according to the present invention includes a tuner 110, a decoder 115, an image processing unit 120, a display unit 125, An input unit 130, an input unit 135, and a control unit 140.

The broadcast receiving apparatus 100 according to the present invention can be applied to a high definition television (HDTV), a standard definition television (hereinafter, referred to as "SDTV " ) Can be applied to a TV capable of receiving digital broadcasting or a TV capable of receiving analog broadcasting.

In this specification, the broadcast receiving apparatus 100 receives a digital video signal, emphasizes a specific color region, and processes the other regions in black and white. However, analog video signals may be similarly applied.

The tuner 110 receives a digital broadcast signal and tunes and detects a channel desired by the user. The digital broadcast signal can be received in the form of a TS (Transmission Stream) conforming to the MPEG-2 standard . Hereinafter, a broadcast signal received from a broadcaster (not shown) by the tuner 110 will be collectively referred to as a TS stream for convenience of explanation and explanation.

That is, the tuner 110 may receive a signal corresponding to the broadcast channel selected by the channel selection signal input from the control unit 140 under the control of the controller 140, and may transmit the signal to the decoder 115.

For example, a user selects an arbitrary channel through an input unit 135 (e.g., a remote controller), and the controller 140 transmits a channel selection command to the tuner 110 to transmit only a broadcasting signal corresponding to the corresponding broadcasting channel And transmitted to the decoder 115.

The decoder 115 separates the TS stream detected and input from the tuner 110 into video data, audio data, and additional data. That is, the decoder 115 separates the TS stream and then transmits the signal to each of the signal processing units (for example, the image processing unit 120 and the sound processing unit).

For example, if the TS stream is a transport stream conforming to the MPEG-2 standard, the decoder 115 can decode each data (e.g., video data, audio data, Additional data, etc.).

The image processing unit 120 converts the image data input from the decoder 115 into a predetermined image format (for example, YCbCr, YPbPr, YIQ, YUV, etc.) under the control of the control unit 140, Specific color is bypassed and other image data is processed in black and white.

For example, a menu for selecting a specific area from an input unit (for example, a remote controller) from a user can be output using an OSD (On Screen Display). In this case, the user can select a specific area (for example, a specific color area) using the input unit 135. [ Then, the control unit 140 of the input unit 135 may transmit a selection command for the area selected by the user to the control unit 140. The controller 140 receiving the selection command for the specific area through the input unit 135 may transmit the corresponding area enhancement information to the image processing unit 120, including color information to be emphasized according to the selection command. Also, the image processing unit 120 receiving only the image data from the decoder 115 can convert the image data into a predetermined image format (for example, YCbCr). The image processing unit 120 receives arbitrary region enhancement information including color information for a specific region from the control unit 140. The image processing unit 120 bypasses the color region included in the region enhancement information from the image data converted into the predetermined image format, (For example, Y component) is bypassed and the chrominance components (for example, Cb and Cr components) are removed (for example, the chrominance components are set in advance in the following equations (1) (For example, by fixing it to a pixel value (i.e., 128) and removing it).

For example, the image processing unit 120 may include all the colors of the same series irrespective of the luminance component of the color selected by the user, and may process all the colors other than the corresponding color in black and white. In this case, if the input image data is in the RGB format, it can be converted into a YCbCr space and processed using only color difference information (Cb, Cr) information. However, in this case, since the comparison method is complex, it is preferable to use the YCbCr space and the HSI color space (color space). Of course, you can also convert directly from RGB space to HSI color space.

First, the HSI color space will be briefly described with reference to FIG. 2 for the sake of understanding and explanation. In the HSI color space, the hue component (i.e., the H component) represents color information irrespective of the luminance and color density. Therefore, a hue component (i.e., H component) is calculated from the input YCbCr or RGB image data, It is possible to emphasize only the corresponding color information in comparison with the hue component (i.e., the H component).

에서

사이의 각도로 표시하는데 일반적으로 표준 색상환의 색조를 빨강, 파랑, 노랑과 같은 색상의 이름으로 표시한다. 포괄적인 색상 모형은 색상의 3요소를 이루고 색상, 채도, 명도(Hue, Saturation, Brightness)의 관계로 나타낸 HSI 모형이다. 색상은 빨강, 노랑, 검정 등과 같은 색상 그 자체를 말하며, 채도는 주어진 색상의 순수성의 정도를 나타낸다. 색상에 회색을 더하면 채도가 떨어지며, 색상에서 채도 요소를 모두 제거하면 중성 회색을 얻을 수 있다. 그리고, 명도는 색상의 밝고 어두운 정도를 나타낸다. HSI is also called HSB, and HSI color space stands for Hue, Brightness, and Saturation, which are three elements of a color model, and express colors by the characteristics of three elements of color. That is, the HSI model is based on the human color perception ability, and among the three elements, the hue is the wavelength of light reflected from or transmitted through the object. The color tone can be measured by the position of the standard color wheel, and as shown in FIG. 2,

in

The color of the standard color wheel is usually indicated by the name of a color such as red, blue, or yellow. A comprehensive color model is the HSI model which is composed of three elements of color and expressed by the relation of color, saturation, brightness (Hue, Saturation, Brightness). Color refers to the color itself, such as red, yellow, and black, and saturation represents the degree of purity of a given color. If you add gray to a color, the saturation will drop. You can get neutral gray by removing all saturation elements from the color. The lightness indicates the lightness and darkness of the color.

는 빨강색,

는 녹색,

는 파랑색,

는 빨강색을 나타낸다. 그리고, 명도는 도 2의 Y축으로 표현되며, 예를 들어, '0'이면 검정색, '1'이면 흰색을 나타낸다. 채도는 도 2에서 '0'에서 '1'까지의 범위의 반지름으로 표현될 수 있다. For example, as shown in FIG. 2,

Red,

Green,

Blue,

Indicates a red color. The brightness is represented by the Y-axis in FIG. 2. For example, '0' represents black, and '1' represents white. The saturation can be expressed as a radius in the range of '0' to '1' in FIG.

The HSI space does not need to know information about how many percents (%) of blue or green are required, such as RGB or YCbCr, to create an arbitrary color. To change the dark red color to pink, simply adjust the saturation. To brighten the dark color, adjust the brightness. That is, the HSI color space is modeled as a cylindrical coordinate system as shown in FIG. As shown in FIG. 2, another cone is inverted under one cone, which is a double cone shape.

For example, the image processing unit 120 may convert YCbCr image data into RGB image data using Equation (1) below, and convert the RGB image data into HSI color space using Equation (2) can do.

[Equation 1]

Here, R, G, and B are color data, Y is luminance data data, and Cb and Cr are data representing chrominance components.

&Quot; (2) "

In addition, the image processing unit 120 can convert the YCbCr space to the HSI color space using, for example, Equation (3).

&Quot; (3) "

As described above, the image processing unit 120 performs a function of converting the image data input from the decoder 115 into the HSI color space under the control of the control unit 140. [ When the user inputs color information to be emphasized (hereinafter, referred to as "emphasis color information") through the input unit 135, the control unit 140 transmits an image emphasis instruction including emphasis color information to the image processing unit 120). Here, the highlight color information may be any color information selected (RGB or YCbCr, see FIG. 8) in the color bar output on the menu screen corresponding to the specific color emphasis.

The image processing unit 120 converts the highlight color information input through the input unit 135 into a hue component (i.e., an H component) of the HSI color space. Hereinafter, the hue component of the highlight color information selected by the user in the image processing unit 120 and converted into the hue component of the HSI color space will be referred to as a filtering hue component.

The image processing unit 120 passes through only the color corresponding to the emphasized color information of the image data of the YCbCr space input from the decoder 115, The YCbCr image data is temporarily converted into HSI color space image data, and if any color information is included in the filtering color component, the corresponding color is filtered and if not included, the luminance component of the corresponding color information of the YCbCr image data (For example, in the case of Equation 3 in Equation 1, the chrominance components (i.e., Cb and Cr components) are changed to preset pixel values (for example, 128) Can be converted to black and white.

As a result, the image processing unit 120 may emphasize only the color information corresponding to the emphasized color information from the image data input from the decoder 115, and convert the remaining color information to black and white. In this manner, only the color information corresponding to the emphasized color information is emphasized, and the remaining color information is converted to black and white, and the image data is transmitted to the display unit 125 under the control of the control unit 140 and output.

Of course, the image processing unit 120 may compare arbitrary color information of the image data of the RGB space and the image data of the YCbCr space to determine whether it is the color information corresponding to the enhanced color information. However, in the case of the RGB space and the YCbCr space , Many operations are required to extract each color information. Therefore, in the present specification, it is possible to reduce unnecessary computation amount by converting the HSI color space calculated as one color component value like the color component of the HSI color space, and to compare the HSI color space with the corresponding color There is an advantage that information can be processed to a similar extent.

및

의 값이 예시되어 있다. 3A, 4A, and 5A illustrate the red, green, and blue spaces on the HSI color space, and FIGS. 3B, 4B, and 5B illustrate RGB color information according to the respective color spaces and YCbCr Depending on color information

And

Are shown.

The display unit 125 may be, for example, a liquid crystal display (LCD), a cathode ray tube, or the like as a means for outputting characters, numbers, images,

The storage unit 130 stores an operation program of the broadcast receiving apparatus 100 according to the present invention, a predetermined algorithm, and the like. Here, the operating program can perform not only a program for controlling the overall operation of the broadcast receiving apparatus 100 and a program for image processing, but also a function for temporarily storing data generated during execution of the programs. Of course, the storage unit 130 may store color information (for example, a color bar format (see FIG. 8)) to be output through the display unit 125 in accordance with the selection mode of the user.

The input unit 135 is a means for receiving a control command and a function selection command (for example, mode selection (user defined, designated color selection, etc.)) for controlling the operation of the broadcast receiving apparatus 100 from a user. For example, the input unit 135 may be implemented with one or more function buttons (e.g., a channel change button, a sound control button, etc.). Of course, the input unit 135 may be provided on one side of the broadcast receiving apparatus 100 or may be implemented in the form of a remote controller.

The control unit 140 controls the internal unit of the broadcast receiving apparatus 100 having the emphasis function (for example, the tuner 110, the decoder 115, the image processing unit 120, The storage unit 130, the input unit 135, and the like).

Although not shown in FIG. 1, the broadcast receiving apparatus 100 may further include an audio processing unit (not shown) for decoding the sound of the broadcast receiving apparatus 100 and an audio output unit (not shown) for outputting the decoded sound.

FIG. 6 is a flowchart illustrating a process of emphasizing only specific color information corresponding to highlight color information selected by a user, according to a preferred embodiment of the present invention. FIG. FIG. 8 is a diagram illustrating a menu screen for receiving highlight color information according to an exemplary embodiment of the present invention, which is output through a display unit. Hereinafter, for convenience of explanation and explanation, it is assumed that an arbitrary channel is selected by a user and only a broadcast signal corresponding to the selected channel is received. For example, assume that the screen illustrated in FIG. 7 is being output. In addition, a menu screen corresponding to a specific color emphasis is outputted through the input unit 135 provided in the broadcast receiving apparatus 100, and color information to be emphasized through the input unit 135 is input directly from the user Only the corresponding color information is emphasized, and the remaining color information can be processed in black and white.

In steps 610 to 615, a signal corresponding to the selected broadcast channel corresponding to the channel selection signal input from the user through the input unit 135 is received and transmitted to the decoder 115. The decoder 115 separates the TS stream detected and input from the tuner 110 into video data, audio data, and additional data. That is, the decoder 115 performs a function of transferring the TS streams to the respective signal processing units (for example, the image processing unit 120 and the sound processing unit (not shown), etc.) .

Only the operation of the image processing unit 120 will be described.

In step 620, the broadcast receiving apparatus 100 receives a menu button for emphasizing a specific color from image data being output from the user through the input unit 135. When a menu button corresponding to a specific color emphasis is input by the user, the menu screen may be displayed in the OSD format as illustrated in FIG. The menu screen illustrated in FIG. 8 is only an embodiment according to the present invention and may be output in other formats. Assume that a user selects a user-defined mode and selects arbitrary color information directly in the HSI space on the menu screen as shown in FIG. Then, the input unit 135 transmits the emphasis color information selected by the user to the control unit 140. The control unit 140 receives the emphasis color information from the input unit 135 and generates an image emphasis command including the emphasis color information and transmits the image emphasis command to the image processing unit 120.

In step 625, the image processing unit 120 converts the image data input from the decoder 115 into a predetermined color space according to the image emphasis command input from the control unit 140, All of the color information except for the color information corresponding to the emphasized color information input from the input color information is processed in black and white.

For example, if the image data input from the decoder 115 is of the YCbCr format, the image processing unit 120 may convert the image data into HSI color space image data. For example, the image processing unit 120 can convert YCbCr image data into RGB image data using Equation (1) or Equation (2), and convert RGB image data into HSI space image data.

[Equation 1]

&Quot; (2) "

The conversion from the YCbCr space to the HSI color space can be performed using, for example, the following equation (3).

&Quot; (3) "

Here, H may be data representing a tincture component, and may be arbitrary angle information.

The image processing unit 120 bypasses the color information corresponding to the strong color information from the image data converted into the HSI space and processes the remaining color information in black and white.

라면, 이미지 처리부(120)는 HSI 스페이스로 변환된 영상 데이터에서 붉은색을 제외한 나머지 색상 정보를 모두 흑백으로 처리하도록 할 수 있다. 물론, 이미지 처리부(120)가 YCbCr 스페이스에서 HSI 스페이스로의 변환 없이 강조 색상 정보에 상응하는 영상 데이터만 바이패스하고 나머지 색상 정보는 흑백으로 처리하도록 할 수도 있다.For example, highlight color information

, The image processing unit 120 may process all of the color information other than the red color in the image data converted into the HSI space in black and white. Of course, the image processing unit 120 may bypass only the image data corresponding to the highlight color information without converting from the YCbCr space to the HSI space, and process the remaining color information in black and white.

For example, in the case of YCbCr video data, the broadcast receiving apparatus 100 may receive range information including color information to be emphasized by the user. Accordingly, the image processing unit 120 bypasses the color information corresponding to the corresponding range information in the YCbCr image data, bypasses the luminance component (Y component) and removes the color difference information (for example, 1 to (3), it is possible to convert the chrominance components (Cb and Cr components) to black and white by fixing them to predetermined pixel values (i.e., 128). As a result, only the color information belonging to the range information can be represented and the remaining information can be processed in black and white.

In operation 630, the image processing unit 120 may transmit image data highlighted only by a specific color to the display unit 125 under the control of the controller 120, and may output the image data.

As described above, according to the broadcast receiving apparatus and method of the present invention having a specific color enhancing function according to the present invention, color information other than the color information corresponding to specific color information selected by the user can be processed in black and white There is an effect.

The present invention also has the effect of reducing unnecessary operations by converting specific color information selected by the user into color components of the HSI color space.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention as defined in the appended claims. It will be understood that the invention may be varied and varied without departing from the scope of the invention.

Claims (6)

A broadcast receiving apparatus comprising: An input unit for receiving broadcast channel channel selection commands and highlight color information from a user; A tuner for detecting only a broadcast signal corresponding to the broadcast channel tuning command among a plurality of broadcast signals; A decoder for separating image data from the TS stream detected and input from the tuner; And Converts the image data and the emphasized color information into a hue component of the HSI color space, bypasses if the hue component corresponding to the image data matches a hue component corresponding to the emphasized color information, And an image processing unit. The method according to claim 1, Wherein the image processing unit bypasses a luminance component of the image data and removes a chrominance component and converts the chrominance component to monochrome if the tincture component corresponding to the enhanced color information does not match the tincture component corresponding to the image data. Claim 3 has been abandoned due to the setting registration fee. Wherein the image processing unit converts the image data and the enhanced color information into hue components of an HSI color space using the following equation.

Here, H is data representing a color tone component, and Cb and Cr are color difference information. Claim 4 has been abandoned due to the setting registration fee. 3. The method of claim 2, Wherein the image processing unit converts the image data and the enhanced color information into hue components of an HSI color space using the following equation. Here, H is data representing a color component, and R, G, and B are color information. A method for emphasizing only specific colors selected by a user in a broadcast receiving apparatus, Receiving a broadcast channel channel selection command from a user; Extracting a TS stream by detecting only a broadcast signal corresponding to the broadcast channel selection command; Separating the video data, the audio data, and the additional data from the TS stream, respectively, and decoding and outputting the separated data; Receiving highlight color information from the image data from the user; Processing the color included in the emphasized color information by bypassing and colors other than the emphasized color information in black and white; And And outputting the converted image data. 6. The method of claim 5, Wherein the step of bypassing a color included in the highlight color information and processing a color other than the highlight color information in black and white comprises: Converting the highlight color information into a hue component of an HSI color space; Converting the image data into a hue component of an HSI color space; And Comparing the hue component of the image data with the hue component of the enhanced color information, and bypassing if it is determined to be coincident, bypassing the luminance component of the image data and removing the chrominance component to change to monochrome Specific color highlights.

Images