KR100808184B1 - Video display apparatus for displaying picture list of video data and Method thereof - Google Patents

Abstract

The present invention provides an image display apparatus and method for displaying a list of image data of the image data that provides a list of image data to intuitively recognize the image data so that the user can search and view the desired image data more quickly and easily. It is about. According to the present invention, a specific picture is selected and extracted from video data according to a picture list display request; Adjust a feature of the extracted picture to construct a plurality of slide picture lists; And displaying a list of configured pictures on the screen. In addition, an I picture is extracted from a group of pictures (GOP), or an image having a color difference width larger than a predetermined reference value among a plurality of images is extracted. In particular, the color difference width is determined by calculating a picture difference for each macroblock unit. The picture list may be configured by adjusting the horizontal and / or vertical size of the extracted picture, or the picture list may be configured by adjusting the color level of the extracted picture. As a result, the list of saved items can be provided to the user based on audiovisual materials, rather than text-based, so that users can more easily and quickly search for and watch the video they want, and extract a list of independent and more effective scenes. Can reduce the load on the system.

Image, picture list, slide, GOP, color difference, macro block, picture difference

Description

Image display apparatus for displaying picture list of image data and method thereof

1 is a block diagram showing an image display apparatus for displaying a list of pictures of image data according to the present invention;

FIG. 2 is a block diagram illustrating in more detail the picture list processing unit of FIG. 1; FIG.

3 is a block diagram illustrating in more detail the operation of the photo extractor of FIG.

4 is a view showing in more detail the operation of the picture extraction unit according to the picture difference.

5 is a diagram for explaining an operation of extracting an I picture from a GOP.

Figure 6 is a block diagram showing in detail the size adjustment action of the extracted picture.

7 is a view showing an embodiment of the display screen configuration of the present invention.

8 is a control flowchart illustrating an image display method of displaying a photo list of image data according to the present invention.

<Description of the symbols for the main parts of the drawings>

100: tuner 110: IF amplifier

120: image detector 130: image processor

140: display unit 141: slide list window

142: preview display window 143: main scene display window

150: photo list processing unit 152a: image input unit

152b: vertical size adjuster 152c: horizontal size adjuster

160: central processing unit 170: photo list storage unit

180: image data storage unit 190: sound processing unit

200: speaker 210: key input unit

The present invention relates to an image display apparatus, and more particularly, to an image display apparatus and method for displaying a list of image data of a user so that a user can quickly and easily search and view desired image data.

In general, an image display device is a device that outputs various information as an image using a screen. Background Art In recent years, a personal video recorder (PVR) having a function of recording an image as well as an image output function on a storage medium such as a hard disk (HDD) is widely used.

As an example, the PVR provides much more advanced functions than the conventional VCR through basic recording functions as well as time-shift, instant replay and other various play functions.

In addition, such a PVR can record and view high-definition digital broadcasting at any time, as well as a variety of additional services such as storing a user's captured image on a storage medium and conveniently displaying it on a screen if necessary. It also provides functionality.

In addition, with the recent rapid development of storage technology, as the capacity of the hard disk mounted on the PVR increases greatly, the amount of programs that can be recorded on the PVR has also increased greatly, and the convenience and necessity thereof have increased.

On the other hand, such a conventional image display device, when showing a list of videos contained in a storage medium to the user, the data in the form of text (Text) consisting of information about the file, such as the name of the video file, the date and time of storage, video length To show.

However, in the conventional image display apparatus as described above, a user needs to read and decipher a character displayed on a screen to find a desired file. In general, since it takes some time to read and read a character, There is a problem that it can take a very long time to find a video that he wants, depending on the amount of data or list.

In addition, there is a problem in that a list of characters translated into each language (Korean, English, Japanese, Chinese, etc.) should be prepared.

Accordingly, the present invention is to solve the above-mentioned conventional problems, by providing the image data as a list of pictures to intuitively recognize the image data so that the user can search and view the desired image data more quickly and easily It is an object of the present invention to provide an image display apparatus and a method for displaying a list of pictures of image data.

According to an aspect of the present invention, an image display apparatus for displaying a photo list of image data includes: an image data storage unit for storing image data; A photo list processor configured to select and extract a specific photo from the image data and to adjust a feature of the extracted photo to form a plurality of slide photo lists; A photo list storage unit for storing a photo list configured in the photo list processing unit; It characterized in that it comprises a display unit for displaying a picture list configured in the picture list processing unit on the screen.

The picture list processing unit; A photo extractor which selects and extracts a specific photo from the image data; A photo feature adjusting unit for adjusting a feature of the picture extracted by the photo extracting unit; And a list constructing unit constituting a plurality of slide picture lists with the pictures adjusted by the picture feature adjusting unit.

The picture extractor extracts an I picture from a group of pictures (GOP) or an image having a color difference width larger than a predetermined reference value among a plurality of images, and in particular, the color difference width is calculated by calculating a picture difference for each macroblock unit. It is desirable to decide.

In addition, the photo feature adjusting unit may configure a photo list by adjusting the horizontal and / or vertical size of the extracted photo, or configure a photo list by adjusting the color level of the extracted photo.

In addition, the picture list stored in the picture list storage unit is more preferably linked to the corresponding video data of the image data storage unit to display a corresponding video when a specific picture is selected.

In addition, the image display method for displaying a photo list of the image data according to the present invention, a) selecting and extracting a specific photo from the image data in response to a request for displaying the photo list; b) constructing a plurality of slide picture lists by adjusting features of the picture extracted in the step; c) displaying the photo list configured in the step on the screen.

In step a), an I picture is extracted from a group of pictures (GOP), or an image having a color difference width larger than a predetermined reference value among a plurality of images, wherein the color difference width is a picture difference for a macroblock unit. It is desirable to calculate and determine.

In step b), it is preferable to compose a picture list by adjusting a horizontal and / or vertical size of the extracted picture, or to configure a picture list by adjusting a color level of the extracted picture.

The list of photos displayed in step c) is more preferably linked with the corresponding video data so that the corresponding video can be displayed when a specific photo is selected.

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

1 is a block diagram illustrating a video display device displaying a picture list of video data according to the present invention.

As shown, the present invention is tuner 100, IF amplifier 110, image detector 120, image processor 130, display unit 140, photo list processor 150, central processing unit 160 ), A photo list storage unit 170, an image data storage unit 180, a sound processing unit 190, a speaker 200, and a key input unit 210.

The tuner 100 receives the signal of the selected channel from the broadcast signal from the antenna ANT, converts the signal into an IF signal, and outputs the IF signal. The IF amplifier 110 detects and amplifies the IF signal output from the tuner 100.

The image detector 120 detects an image signal as a VIF signal and a SIF signal. The image processor 130 processes the VIF signal detected by the image detector 120 as an image, and the display 140 displays the image on the screen.

In addition, the sound processor 190 processes the sound signal and finally outputs it through the speaker 200.

The image data storage unit 180 stores image data, and the photo list processing unit 150 selects and extracts a specific photo from the image data, and configures a plurality of slide photo lists by adjusting features of the extracted photo.

The photo list storage unit 170 stores the photo list configured in the photo list processing unit 150. In addition, the display unit 140 displays a picture list configured in the picture list processing unit 150 on the screen.

In addition, the central processing unit 160 controls the overall operation of the device and the operation of each unit, the key input unit 210 receives a picture list display request from the user and delivers to the central processing unit 160.

2 is a block diagram illustrating in more detail the photo list processor of FIG. 1.

As shown, the photo list processing unit 150 of the present invention; A photo extractor 151 which selects and extracts a specific photo from the image data; A photo feature adjusting unit 152 for adjusting a feature of the picture extracted by the photo extracting unit 151; The picture feature adjusting unit 152 includes a list adjusting unit 153 constituting a plurality of slide picture list as a picture adjusted.

3 is a block diagram illustrating in more detail the operation of the photo extractor of FIG. 2, FIG. 4 is a view illustrating in detail the operation of the photo extractor according to the picture difference, and FIG. 5 is an operation of extracting an I picture from a GOP. It is a figure for demonstrating.

As shown, the photo extractor 151 extracts an I picture from a group of pictures (GOP) or an image having a color difference width larger than a predetermined reference value among a plurality of images, in particular, the color difference width is a macroblock. It is preferable to calculate the picture difference for a (Macro block) unit and calculate the picture difference.

FIG. 6 is a block diagram illustrating the size adjustment of the extracted picture in detail. The picture feature adjusting unit 152 of the present invention includes a plurality of image input units 152a, a vertical size adjusting unit 152b, and a horizontal size adjusting unit. And 152c, to configure a picture list by adjusting the horizontal and / or vertical size of the extracted picture. Alternatively, although not shown in the drawing, it is also preferable to configure a picture list by adjusting the color level of the extracted picture.

7 is a diagram illustrating an embodiment of a display screen configuration of the present invention.

As shown in the drawing, a slide list window 141 in which a slide picture list is arranged, a preview display window 142 that implements a video description and a preview function of a video, and thumbnails of some pictures of main scenes are displayed on one side of the screen. A main scene display window 143 composed of a thumb nail or the like is provided.

In addition, the photo list stored in the photo list storage unit 170 is linked with the corresponding video data of the image data storage unit 180 to display a corresponding video when a specific photo is selected.

8 is a control flowchart illustrating an image display method of displaying a photo list of image data according to the present invention.

As shown, the present invention, a) selecting and extracting a specific picture from the image data in response to the picture list display request (S200 ~ S210); b) constructing a plurality of slide picture lists by adjusting characteristics of the picture extracted in the step (S220 to S230); c) displaying the photo list configured in the step on the screen (S240).

Step a) (S200 to S210) extracts an I picture from a group of pictures (GOP) or extracts an image having a color difference width larger than a predetermined reference value among a plurality of images, in particular, the color difference width in macroblock units. It is determined by calculating the picture difference for the picture.

Step b) (S220 ~ S230), by adjusting the horizontal and / or vertical size of the extracted picture to form a picture list, or by adjusting the color level of the extracted picture to form a picture list.

The list of pictures displayed in step c) (S240) is linked with the corresponding video data so as to display a corresponding video when a specific picture is selected (S250 to S260).

Referring to the operation of the present invention configured as described in more detail as follows.

First, the tuner 100 receives a signal of a selected channel among broadcast signals from the antenna ANT, converts the signal into an IF signal, and outputs the IF signal. The IF amplifier 110 detects and amplifies the IF signal output from the tuner 100. do.

The image detector 120 detects an image signal as a VIF signal and a SIF signal. The image processor 130 processes the VIF signal detected by the image detector 120 as an image, the display 140 displays the image on the screen, and the sound processor 190 processes the sound signal. Finally output through the speaker 200.

In addition, the image data storage unit 180 stores the image data, particularly the video data.

In this state, a specific photo is selected and extracted from the image data according to the photo list display request (S200 to S210).

That is, if the user selects to view the stored list, the key input unit 210 receives a picture list display request from the user and transmits the request to the central processing unit 160, and accordingly, the central processing unit 160 receives the photo list processing unit ( 150).

That is, the central processing unit 160 configures list information on the images stored in the current image data storage unit 180 and transfers the list information to the photo list processing unit 150 to construct a photo list.

When the photo list processing unit 150 configures the list information on the image, the photo list processing unit 150 is generally configured by reading a header of the video. However, since the video is composed of header containing general information and raw data of video and audio, some screens can be extracted by random selection method from the video raw data when constructing the list for the video. It is possible to provide an audiovisual-based user interface rather than a text-based user interface by processing the screen slide configured as the picture list information.

That is, the photo list processing unit 150 selects and extracts a specific photo from the image data, and configures a plurality of slide photo lists by adjusting features of the extracted photo.

As shown in FIG. 3, the photo extracting unit 151 of the photo list processing unit 150 selects and extracts a specific photo from the image data, and the photo feature adjusting unit 152 is selected by the photo extracting unit 151. The feature of the extracted picture is adjusted, and the list constructing unit 153 composes a plurality of slide picture lists with the picture adjusted by the picture feature adjusting unit 152.

In this case, as illustrated in FIG. 5, the photo extractor 151 may extract a I picture from a typical group of pictures (GOP) to form a specific photo list.

That is, in general, video signals are compressed using the overlapping characteristics of signals. As a representative example, when video signals are compressed to MPEG-2, they are classified into I, P, and B pictures, and different algorithms are applied. In this case, the I picture is mainly created when a scene change occurs and there is no correlation with an adjacent picture. When similar pictures are contiguous, they are compressed into P pictures by referring to previous I or P pictures. Since B pictures are compressed with reference to previous and subsequent pictures, they are most efficient. In the compression / restore process, less error occurs and I, P, and B are distinguished to improve the compression efficiency.

Accordingly, the digitally compressed image is composed of several GOPs as shown in FIG. 5, and the GOPs are grouped still images divided into I, P, and B pictures. Usually, when a scene change occurs and it is not correlated with an adjacent picture, an I picture has all the information on one screen.

In the present invention, if an I picture is extracted from a continuous GOP due to the characteristics of an image, it is highly likely that a relatively continuous picture is extracted, and if I pictures are extracted at intervals of a certain second or more, an independent still picture is likely to be obtained. high.

On the other hand, if you want to obtain an independent still picture in a more reliable way than to obtain a capture screen stochastically, the independent pictures may be selected through technical calculations on the extracted I pictures.

That is, as illustrated in FIGS. 3 and 4, an image having a color difference width larger than a predetermined reference value among a plurality of images is extracted, and in particular, the color difference width is a picture difference with respect to a macro block unit. Determine by calculating

As shown in FIG. 3, as a result of calculating the picture difference with a subtractor 151b by dividing the current picture and the previous picture through the delay buffer 151a for the same size picture, the larger the subtraction width is. The difference between the two images may be determined to be large.

In addition, as shown in FIG. 4, since one still picture is composed of several macro blocks, when the picture difference is calculated for each macro block unit, it is possible to determine whether the picture has a large color difference or a small picture. do.

If such picture difference technology is used, it is also possible to technically select a still picture having a high value as a slide composition screen among the extracted I pictures.

In addition, if the system performance is excellent, the extracted I-picture may be used as it is, but the slide that will be used in the audio-visual storage list is enough for the user to judge the video even though the size is small.

One way to reduce the load on the system is to reduce the color level to 8 bits, and resizing the HD high-resolution picture for use with the storage list can also reduce the load on the system. have.

Therefore, the present invention performs a step of constructing a plurality of slide picture list by adjusting the characteristics of the picture extracted in the step (S220 ~ S230).

6, the photo feature adjusting unit 152 of the present invention includes a plurality of image input units 152a, a vertical size adjusting unit 152b, and a horizontal size adjusting unit 152c. Organize the photo list by adjusting the horizontal and / or vertical size of the extracted photo.

Alternatively, although not shown in the drawing, it is also preferable to configure a picture list by adjusting the color level of the extracted picture.

As described above, when the color level is lowered and resized for the I picture selected from the video, the slide list for the storage list can be configured for one video. If the sequence of tasks takes a lot of time, it's possible to save the slides separately when saving the video, so that you can quickly create a save list whenever the user requires an audiovisual save list.

Thereafter, the step of displaying the list of pictures configured in the step on the screen (S240).

In this case, the photo list storage unit 170 stores the photo list configured in the photo list processing unit 150, and the display unit 140 displays the photo list configured in the photo list processing unit 150 on the screen.

For example, as shown in FIG. 7, a slide list window 141 in which a list of slide photos is arranged on one side of the screen of the display unit 140, and a preview display window for implementing a video description and a preview function of an image. 142 and a main scene display window 143 composed of thumbnails of several photographs of the main scenes.

In addition, the photo list stored in the photo list storage unit 170 is linked to the video data of the image data storage unit 180 so that a corresponding video may be displayed when a specific photo is selected (S250 to S260).

As described above, the present invention can provide the user with the storage list based on the audiovisual material rather than the text, so that the user can more easily search and view the desired image.

That is, when it is necessary to show the storage list at the user's request, a slide consisting of a capture screen is configured by sampling still images with a predetermined rule from a pre-sampled or instant video. This configuration list does not necessarily consist of a capture screen alone, and may capture some 'metabolism' of the video depending on the user's setting.

In this way, if the slide is composed of the capture screen and the voice, the user can easily search for and view a desired image by providing the user with the stored list based on the audiovisual material instead of the text.

The present invention described above can be applied to conventional video display devices, namely flat panel display devices such as PDPs and LCDs, as well as PVRs, projection TVs, general TVs, CRT monitors, and other video devices, analog TVs, digital TVs, and The same applies to satellite TV. In addition, it can of course be applied to all NTSC, PAL, SECAM method.

Although the preferred embodiments of the present invention have been illustrated and described above, the present invention is not limited to the above-described embodiments, and the present invention is not limited to the above-described embodiments without departing from the spirit of the present invention as claimed in the claims. Anyone skilled in the art can make various changes and, of course, such changes are within the scope of the appended claims.

As described above, an image display apparatus and a method for displaying a photo list of image data according to the present invention, by providing the image data as a photo list to intuitively recognize the image data, by using the existing storage list based on the character Rather than being able to provide to the user based on audiovisual materials, the user can more easily and quickly search for and view the desired image.

In addition, I pictures may be extracted from the GOP, or a picture difference for each macro block may be calculated to extract a specific picture according to the color difference width, and the picture list may be configured by adjusting the horizontal and / or vertical size of the extracted picture. By configuring the picture list by adjusting the color level of the extracted picture, it is possible to extract a picture list of independent and more effective scenes from a plurality of video data, and to reduce the load on the system.

In addition, there is an effect that it is not necessary to prepare a list of characters translated into national languages (Korean, English, Japanese, Chinese, etc.).

Claims (15)

An image data storage unit for storing image data; Color difference width is determined by calculating a picture difference for each macroblock unit among the images stored in the image data storage unit, extracts an image in which the color difference width is larger than a predetermined reference value, selects a specific picture, and adjusts the characteristics of the selected picture. A photo list processor configured to configure a plurality of slide photo lists; A photo list storage unit for storing a photo list configured in the photo list processing unit; And a display unit configured to display a list of pictures configured by the picture list processing unit on a screen. The method of claim 1, The picture list processing unit; A photo extracting unit for extracting an image having a color difference width larger than a predetermined reference value from a plurality of images and selecting a specific photo from the image data; A photo feature adjusting unit for adjusting a feature of the picture extracted by the photo extracting unit; And a list construction unit constituting a plurality of slide picture lists with the pictures adjusted by the picture feature adjusting unit. The method of claim 2, The photo list processing unit; An image display apparatus for displaying a photo list of image data, characterized by extracting an I picture from a group of pictures (GOP). delete delete The method of claim 2, The photo feature adjusting unit And a picture list of image data, wherein the picture list is configured by adjusting a horizontal and / or vertical size of the extracted picture. The method of claim 2, The photo feature adjusting unit And a picture list of image data, wherein the picture list is configured by adjusting a color level of the extracted picture. The method of claim 1, The photo list stored in the photo list storage unit, And displaying a list of pictures of the image data, wherein the selected picture is linked with the corresponding video data of the image data storage unit to display the corresponding video. a) determining a color difference width by calculating a picture difference for each macroblock unit among stored images according to a picture list display request, and selecting a specific picture by extracting an image having a color difference width larger than a predetermined reference value; b) constructing a plurality of slide picture lists by adjusting a feature of the picture selected in the step; c) displaying the photo list configured in the step on the screen; image display method for displaying a photo list of the image data. The method of claim 9, Step a) A picture display method of displaying a picture list of picture data, characterized by extracting an I picture from a group of pictures (GOP). delete delete The method of claim 9, Step b) is An image display method of displaying a photo list of image data, characterized by constituting a photo list by adjusting the horizontal and / or vertical size of the extracted photo. The method of claim 9, Step b) is An image display method of displaying a photo list of image data, characterized by constituting a photo list by adjusting a color level of the extracted photo. The method of claim 9, The list of pictures displayed in step c) is And displaying a list of pictures of the image data, wherein the selected picture is linked with the corresponding video data so as to display the corresponding video.

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