KR100947581B1 - Method and apparatus for tagging location data into multimedia data - Google Patents

Abstract

The present invention discloses a method and apparatus for tagging location information in multimedia data. The present invention inserts and extracts location information into a data area instead of a header area of multimedia data so as not to affect the encoding and decoding processes of standardized multimedia data. Therefore, the present invention is free to install the software simply to install the software in the electronic devices that are commonly used to implement the location information tagging method of the present invention, without having to purchase a separate electronic device to use the location information It can be inserted into the multimedia information and extract it.

Description

Method and apparatus for tagging location information into multimedia data

The present invention relates to a method and apparatus for tagging location information, and more particularly, to a method and apparatus for tagging location information on multimedia data generated in a mobile portable terminal.

Recently, various LBS-based services using the Internet or wireless communication networks have been introduced. In the conventional LBS-based services, the mobile communication terminal acquires the location information and transmits the location information combined with the multimedia data.

For example, a user discovers a fire scene while passing a road, takes a picture of the fire scene, and transmits the location information to the fire authorities or a broadcasting company.

However, in the conventional method, the user terminal combines and transmits the location information data to the multimedia data. Since the multimedia data mostly conforms to international standards, the header information of the bitstream of the multimedia data is changed when the location information is combined. Therefore, the receiving terminal that receives the multimedia data combined with the location information should decode the multimedia data according to a new decoding method rather than the general multimedia decoding method.

Therefore, in order to use a conventional LBS-based service, a user terminal or the like that receives multimedia data combined with location information is generally difficult to be implemented as a popular multimedia device, and purchase a separate electronic device for using such a service. There was a problem that must be done, and therefore, there was a problem that the service itself cannot be activated.

SUMMARY OF THE INVENTION An object of the present invention is to provide a method and apparatus for tagging and using location information on multimedia data through software processing without changing the basic format of standardized multimedia data.

The position information tagging apparatus of the present invention for achieving the above-described technical problem, the position measuring unit for generating position information by measuring its position; A format analyzer for analyzing the format of the multimedia data; A data analyzer configured to analyze the multimedia data according to the format of the multimedia data and to select a position of a data region bit string of the multimedia data into which the position information is to be inserted; And a position information tagging unit for inserting the position information into the position of the bit string selected by the data analyzer.

Also, when the format of the multimedia data is a still image, the data analyzer may select, as the location information insertion position, a field in which no data is recorded among the bit strings in which the multimedia data is compressed in a predetermined number of bytes.

In addition, when the format of the multimedia data is a still image, the data analyzer selects, as a location information insertion position, a pixel in the pixel array of the multimedia data that has a smaller difference in pixel value from adjacent pixels than a preset value. The tagging unit may remove pixel values of the selected pixel and insert position information.

In addition, when the format of the multimedia data is a still image, the data analyzer selects a predefined pixel as a location information insertion position in a pixel array of multimedia data, and the location information tagging part selects a pixel value of the selected pixel. You can remove it and insert location information.

In addition, when the format of the above-described multimedia data is a moving picture, the data analyzer may select a predefined area as a location information insertion position from a prediction frame in a predefined order among the basic frames and the prediction frames constituting the moving picture. Can be.

On the other hand, the multimedia data processing apparatus of the present invention for achieving the above-described technical problem, Communication unit for receiving the multimedia data inserted the position information; A tagging algorithm analyzer for analyzing the format of the multimedia data; And a location information extraction unit for extracting location information inserted into the data area of the bit string of the multimedia data according to the format of the multimedia data.

In addition, when the format of the multimedia data is a still image, the location information extracting unit may extract location information from a field in which no data is recorded among bit streams compressed in a predetermined number of bytes.

In addition, when the format of the multimedia data is a still image, the location information extracting unit extracts the location information from the pixel value of the pixel whose difference in pixel value from adjacent pixels is larger than a predefined value in the pixel array of the multimedia data. The pixel value of the pixel may be interpolated using the pixel values of adjacent pixels.

In addition, when the format of the multimedia data is a still image, the location information extracting unit may extract location information from a pixel value of a predefined pixel and interpolate the pixel value of the pixel adjacent to the pixel value. .

In addition, when the format of the multimedia data is a moving picture, the location information extracting unit may extract location information from an area corresponding to a predefined area in a prediction frame in a predefined order.

On the other hand, the location information tagging method of the present invention for achieving the above technical problem, (a) the location information tagging device for analyzing the format of the multimedia data; (b) the location information tagging device analyzing the multimedia data according to the format of the multimedia data and selecting the location of the data area bit string of the multimedia data into which the location information is to be inserted; (c) measuring location of the location information tagging device to generate location information; And (d) inserting the location information into the position selected in the step (b).

In addition, when the format of the multimedia data is a still image, the above-mentioned step (b) may select a field where no data is recorded among the bit strings in which the multimedia data is compressed in a predetermined number of bytes as the location information insertion position. .

In addition, in the case where the format of the multimedia data described above is a still image, step (b) selects, as a positional information insertion position, a pixel in the pixel array of the multimedia data whose difference in pixel value from adjacent pixels is smaller than a preset value. In step (d), the pixel value of the selected pixel may be removed and position information may be inserted.

In addition, when the format of the multimedia data described above is a still image, step (b) selects a predefined pixel as the position information insertion position in the pixel array of the multimedia data, and step (d) You can remove pixel values and insert location information.

In addition, when the format of the above-described multimedia data is a video, step (b) is a position of the position information insertion position in the predefined frame in the prediction frame of the predefined order of the base frame and the prediction frame constituting the video Can be selected.

On the other hand, the location information tagging method of the present invention for achieving the above-described technical problem, (e) a communication unit for receiving the multimedia data inserted the location information; (f) analyzing the format of the multimedia data; And (g) extracting location information inserted in the data area of the bit string of the multimedia data according to the format of the multimedia data.

In addition, when the format of the above-mentioned multimedia data is a still image, step (g) may extract position information from a field in which no data is recorded among the bit strings compressed in a predetermined number of bytes.

Also, in the case where the format of the above-mentioned multimedia data is a still image, step (g) is performed by the position information from the pixel value of the pixel whose difference in pixel value from adjacent pixels in the pixel array of the multimedia data is larger than a predefined value. May be extracted, and the pixel value of the pixel may be interpolated using the pixel values of adjacent pixels.

In addition, when the format of the above-mentioned multimedia data is a still image, step (g) extracts position information from a pixel value of a predefined pixel and interpolates the pixel value of the pixel using the pixel values of adjacent pixels. Can be.

In addition, when the format of the above-described multimedia data is a moving picture, step (g) may extract location information from an area corresponding to a predefined area in a prediction frame in a predefined order.

The present invention inserts and extracts location information into a data area instead of a header area of multimedia data so as not to affect the encoding and decoding processes of standardized multimedia data.

Therefore, the present invention is free to install the software simply to install the software in the electronic devices that are commonly used to implement the location information tagging method of the present invention, without having to purchase a separate electronic device to use the location information It can be inserted into the multimedia information and extract it.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. However, hereinafter, the description will be focused on the process of tagging the location information on the multimedia data, but it is a matter of course that the time information for generating the multimedia data can be tagged in the same manner as the location information. Therefore, it should be noted that the location information described below is a concept including time information.

1 is a diagram showing the configuration of an entire system according to a preferred embodiment of the present invention. Referring to FIG. 1, the entire system of the present invention includes a user terminal 200 and a multimedia data processing apparatus 300.

First, the user terminal 200 generates or edits multimedia data, measures its location information, tags the measured location information on the multimedia data, and transmits the measured location information to the multimedia data processing apparatus 300 through a wired or wireless communication network.

The user terminal 200 may be implemented as a PDA, a mobile phone, a navigation, a PMP, or the like, and when each of them is provided with an image capturing means such as a camera, the user terminal 200 may directly generate video and still image data. If not provided, the location information may be tagged and transmitted by editing the video data stored therein.

In addition, when the GPS module is installed inside, the user terminal 200 receives a GPS signal from the satellite 110 to measure a location, and the user terminal 200 is implemented as a mobile communication terminal such as a mobile phone. When the receiving module is not installed, it measures its position using the position of the mobile communication network base station 120. Since the configuration for measuring this position is a generalized technology, detailed description thereof will be omitted.

The multimedia data processing apparatus 300 is not limited in configuration as long as it extracts and uses location information from the multimedia data received from the user terminal 200. Accordingly, the multimedia data processing apparatus 300 may be implemented as a broadcaster server, an internet portal server, or the like, and includes the multimedia data processing device 300 as a user terminal 200 that may receive and reproduce multimedia data tagged with location information from another user terminal 200. It is a concept.

2 is a block diagram showing a functional configuration of a user terminal 200 according to a preferred embodiment of the present invention. 2, the user terminal 200 includes an image capturing unit 210, a position measuring unit 220, a communication unit 230, a format analyzing unit 240, a data analyzing unit 250, and a location information tagging unit ( 260, an input unit 270, a display unit 280, and a data storage unit 290. The function of each component is as follows.

The image capturing unit 210 is implemented as a camera and photographs an object to the outside to generate a still image or a video and output it to a multimedia DB.

When the user terminal 200 is implemented by navigation or the like, the position measuring unit 220 is implemented as a GPS module, receives the GPS signal from the satellite 110, generates and compresses location information, and then stores the data storage unit 290. Print it out and save it. In addition, when the user terminal 200 is implemented as a mobile phone or the like, that is, when the location measuring unit 220 is not implemented as a GPS module, the location measuring unit 220 is received from the neighboring base station 120 It measures its own location using the signal, compresses the location information and outputs it to the data storage unit 290 to store it. The position information generated by the position measuring unit 220 may be composed of coordinate values according to standards such as WGS84, BESSEL, and KATEC. Since the method of measuring the position is a well-known technique, a detailed description thereof will be omitted.

The communication unit 230 transmits the multimedia data tagged with the location information to the multimedia data processing apparatus 300 through a wired or wireless communication network. In addition, the communication unit 230 communicates with the base station 120 to perform a function as a general mobile communication terminal.

The input unit 270 is implemented as a keypad or a touch screen to receive selection information on a menu from a user, and receives text data from the user when the user creates a document.

The display unit 280 displays various menus for using the service of the present invention to the user, and displays documents, moving pictures, and still images stored in the data storage unit 290.

The format analyzer 240 examines header information of the data stored in the data storage unit 290 and analyzes whether the data is still image data, video data, or text data. As a method of analyzing the format of data, various conventionally known methods may be applied.

The data analyzer 250 analyzes the multimedia data and selects a position to insert the position information in the data area among the bit strings of the multimedia data, and the position information tagging unit 260 selects the position information in the data analyzer 250. Insert location to tag location information.

The data storage unit 290 is a basic data storage unit 292 for storing general data necessary for using the user terminal 200, and temporarily stores the location information and multimedia data, and the multimedia with the compressed multimedia data and location information tagged And a multimedia data storage unit 294 for storing data.

4A and 4B are diagrams for describing an algorithm for tagging location information according to a preferred embodiment of the present invention.

First, the functions of the data analyzer 250 and the location information tagging unit 260 will be described in detail with reference to FIG. 4A, which describes a method of tagging location information on still image data. Referring to FIG. As shown, the original still image having a certain number of pixels (illustrated as 200 * 100 in FIG. 4A) is encoded to be stored in the data storage 290 or for transmission.

An example of encoded still image data is shown in Fig. 4A (b). As shown in (b) of FIG. 4A, the original still image is compressed into a bit string of a constant number of bytes (e.g., 8 bytes) while being scanned every row of the pixel array. At this time, when the compression ratio is good, as shown in (b), there exists a space on the bit string that is not occupied by the encoded data, and the data analyzing unit 250 has a constant size (for example, 4 bytes) of the present invention. Analyze whether there is enough empty space frame to insert the location information.

When there is enough space to insert the location information, the location information tagging unit 260 has a value that cannot be used in general compressed image data at the end of the bit string, as shown in FIG. 4A (b). Predetermined identification information (illustrated as " F " in Fig. 4A) is inserted into the bit string, and positional information is inserted into the remaining empty frame space.

When it is difficult to insert the position information into the compressed bit string as a result of the data analysis, the data analyzer 250 may insert the position information so that the image quality is not affected by examining each pixel value of the pixel array as shown in (c) of FIG. 4A. Selects a pixel which can be selected, and the location information tagging unit 260 inserts each byte of the location information instead of the pixel value of the selected pixel, and the pixel value where the location information is inserted in the decoding process is compensated using the adjacent pixel value. .

The method of selecting a pixel in the data analyzer 250 may be implemented in various ways. In the simplest manner, it is possible to choose to insert the positional information into the second, fourth, sixth and eighth pixels of the first pixel row when the pixels in a predefined order, for example, the positional information is four bytes. . This example is illustrated in (c) of FIG. 4A.

In addition, the position information inserted so that the error between the arithmetic mean of adjacent pixel values and the corresponding pixel value is less than or equal to a certain value so that the error at the time of decoding can be minimized and the inserted position information can be easily identified when decoding. A pixel value in which a difference between a value and a corresponding pixel value or a difference between an inserted position information value and an adjacent pixel value is greater than or equal to a predetermined value may be selected.

This method is based on the fact that each pixel of the image does not change abruptly, so that even if one pixel value removed from the series of pixel values is compensated by an arithmetic mean value of adjacent pixel values, the image quality is not degraded.

4B is a diagram for explaining a method of inserting location information into video data. 4B, the functions of the data analyzer 250 and the location information tagging unit 260 performed on the video data will be described.

In general, the video is composed of at least 24 frames per second, and the video generated by the image capturing unit 210 may be stored in the data storage unit 290 as it is, but to improve the storage efficiency, Compression and storage are common.

The video compression scheme can be implemented in various ways according to the standard, but the general scheme includes a basic frame including all pixel values (including the case of applying only the spatial compression technique without applying the temporal compression technique, as shown in FIG. 4B). Is set at a constant frame interval, and frames located between the basic frames are compressed by applying a temporal compression technique by performing motion prediction of an object in the image from the base frame or a preceding frame.

In a preferred embodiment of the present invention, the data analyzer 250 selects a frame and a position on the frame among the frames between the basic frames, and the position information tagging unit 260 uses the position information as the data analyzer. Insert at the position selected at (250). In the preferred embodiment of the present invention, the positional information is inserted at the edge (data corresponding to the edge of the image information) of the second frame of the video.

On the other hand, in the case of inserting the positional information into the document data, a method of inserting the positional information into the empty space of the compressed bit string among the methods of inserting the positional information into the still image data described above is used. Therefore, a detailed description of the method of inserting the location information in the document will be omitted.

Such a method is referred to as a lossless tagging technique, and is processed as necessary as lossy data that damages very little information about documents, images, and videos. That is, all multimedia data files are composed of a header portion and a data portion, and the data portion is composed of binary data by a compression method or the like. This method refers to a method of adding location information to a portion corresponding to 1 to 4 bytes of a double data part, and is called a loss tagging technique as an alternative to a format that configures a high compression ratio and a unique header / data part.

3 is a block diagram illustrating a detailed configuration of a multimedia data processing apparatus 300 according to a preferred embodiment of the present invention. Referring to FIG. 3, the multimedia data processing apparatus 300 of the present invention includes a tagging algorithm analyzing unit 310, a location information extracting unit 320, a decoding unit 330, a communication unit 340, and a data storage unit. do.

The tagging algorithm analyzing unit 310 analyzes the multimedia data received from the user terminal 200 and examines whether the location information is tagged in the video, the still image, or the document data. (320).

The location information extractor 320 extracts location information according to the information input from the tagging algorithm analyzer 310.

For example, when the position information is inserted into the still image data, the position information extracting unit 320 first examines the compressed bit string in a predetermined number of bytes (for example, 8 bytes), and inserts the position information into the corresponding bit string. It checks whether the identification information indicated is included, and if the identification information is included, the location information is extracted from the corresponding bit string.

When the position information is not inserted into the compressed bit string of the still image data, the position information is extracted to correspond to a predefined position information insertion method.

For example, when the user terminal 200 is prescribed to insert position information into predetermined pixels (second, fourth, sixth, and eighth pixels in the example of FIG. 4A) in the pixel columns. Extracts the first pixel value as position information and interpolates the pixel using adjacent pixels. As described above, in general, the pixel value in the image is gradually changed rather than rapidly changed. In the preferred embodiment of the present invention, the pixel value in which the position information is inserted is interpolated using an arithmetic mean of adjacent pixel values. However, it should be noted that the interpolation method can be applied in various ways.

On the other hand, the user terminal 200 satisfies a case where the difference between the position information and the pixel value is large (above a predetermined value) or at the same time a pixel that satisfies a condition that the difference between adjacent pixel values is small (below a predetermined value). In the case of inserting the location information, the location information extractor 320 searches for a pixel having a value that is much larger than an adjacent pixel value from the first column of the first row of the still image decoded by the decoder 330. The information is extracted and interpolated pixel values into which position information is inserted using adjacent pixel values.

As described above, in the still image, each pixel value rarely changes abruptly. As shown in (b) of FIG. 4A, the pixel value suddenly changes from 130 to 240, and then rapidly changes to 135 again. In general, since it is difficult to occur and the distribution of pixel values of the still image as a whole has a pixel value of about 120 to 140, it can be seen that position information is inserted into an abnormal pixel exceeding 230.

Meanwhile, in the case of a video, the location information extracting unit 320 extracts location information inserted in a specific region of a predefined frame. As described above, since the location information is inserted in only a part of the plurality of frame images constituting the video, even if the location information is decoded in the inserted state and displayed to the user, the user does not detect this and thus without deterioration in image quality. Location information can be extracted.

On the other hand, when the position information is inserted into the document, the position information can be extracted from the bit string after the identification information indicating that the position information is inserted among the bit strings in which the document is compressed.

The decoder 330 decodes the multimedia data received from the communication unit 340 and outputs it to the user through the display unit 350.

The display unit 350 is implemented by an LCD, a CRT, or the like to display multimedia data to the user.

The input unit 360 is implemented by a keypad, a mouse, a keyboard, etc. to receive selection information from an administrator or a user.

5 is a flowchart illustrating a preferred embodiment of a method of tagging location information in multimedia data of the present invention.

A method of tagging location information into multimedia data according to an exemplary embodiment of the present invention will be described with reference to FIG. 5. However, since the overall function has been described with reference to FIGS. 1 to 4B, it will be briefly described.

The user photographs a moving image or a still image (hereinafter referred to as "multimedia data") using his user terminal 200 (S500). The multimedia data photographed by the image capturing unit 210 of the user terminal 200 is stored as it is or compressed and stored in the data storage unit.

Meanwhile, the user may read the multimedia data from the data storage unit in order to tag and transmit the location information to the multimedia data stored in the data storage unit without capturing an image directly.

Thereafter, the user terminal 200 analyzes the format of the photographed multimedia data or the multimedia data read from the data storage to identify whether the multimedia data is a video or a still image (S510).

The user terminal 200 analyzes the multimedia data according to the file format and selects a position to insert the location information (S520). Method of selecting the position to insert the position information in the still image and video Since the same as the method described above with respect to the function of the data analysis unit 250 shown in FIG. 2 will not be described in detail.

Meanwhile, the user terminal 200 measures its location using a GPS module or base station information (S530), generates location information according to a predetermined standard form, and compresses the generated location information (S540). Processes for generating position information (S530 and S540) are the same as those of the position measuring unit 220 of FIG. 2, and thus detailed description thereof will be omitted.

When the location information is generated, the user terminal 200 inserts the location information into the predetermined location of the multimedia data and transmits the location information to the multimedia data processing apparatus 300 (S550). The method of inserting the location information into the multimedia data is the same as the function of the location information tagging unit 260 described above.

The multimedia data in which the location information is inserted through the aforementioned steps S500 to S550 are transmitted to the multimedia data processing apparatus 300. For example, when a user passes a downtown area and photographs the appearance of a building in which a fire has occurred, the user inserts location information and transmits the location information to a fire control center or a broadcaster.

Meanwhile, the multimedia data processing apparatus 300 receives multimedia data tagged with location information (S560) or reads multimedia data stored in advance from the database 370 (S565).

Thereafter, the multimedia data processing apparatus 300 analyzes the multimedia data to determine whether the multimedia data is a moving picture or a still image (S570).

After the format of the multimedia data tagged with the location information is determined, the multimedia data processing apparatus 300 extracts the location information from the multimedia data (S580). Since the method of extracting the location information is the same as the method of extracting the location information of the location information extracting unit 320 of FIG. 3, a detailed description thereof will be omitted.

The extracted location information may be used in various fields with multimedia data. For example, in the above-described example, the fire control center can grasp the current fire state from the fire video, extract the location information and dispatch the firefighters to the site of the fire, and the broadcaster broadcasts the location information while broadcasting the fire video. Inform viewers immediately to prevent traffic congestion.

In the above-described embodiment, it is assumed that the location information is tagged to the multimedia data and transmitted to another multimedia data processing apparatus 300 or another user terminal 200. However, the user terminal of the present invention merely implemented by a digital camera. As soon as you take a picture while traveling with 200, the location information may be tagged and stored in the picture data as soon as the picture is taken, and may be modified to read the location information in real time when viewing the picture later.

The invention can also be embodied as computer readable code on a computer readable recording medium. The computer-readable recording medium includes all kinds of recording devices in which data that can be read by a computer system is stored. Examples of computer-readable recording media include ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical data storage, and the like, which are also implemented in the form of a carrier wave (for example, transmission over the Internet). It also includes. The computer readable recording medium can also be distributed over network coupled computer systems so that the computer readable code is stored and executed in a distributed fashion.

So far I looked at the center of the preferred embodiment for the present invention. Those skilled in the art will appreciate that the present invention can be implemented in a modified form without departing from the essential features of the present invention. Therefore, the disclosed embodiments should be considered in descriptive sense only and not for purposes of limitation. The scope of the present invention is shown in the claims rather than the foregoing description, and all differences within the scope will be construed as being included in the present invention.

1 is a diagram showing the configuration of an entire system according to a preferred embodiment of the present invention.

2 is a block diagram illustrating a functional configuration of a user terminal according to a preferred embodiment of the present invention.

3 is a block diagram illustrating a detailed configuration of a multimedia data processing apparatus according to a preferred embodiment of the present invention.

4A and 4B are diagrams for describing an algorithm for tagging location information according to a preferred embodiment of the present invention.

5 is a flowchart illustrating a preferred embodiment of a method of tagging location information in multimedia data of the present invention.

Claims (21)

A location measuring unit measuring location of the user and generating location information; A format analyzer for analyzing the format of the multimedia data; A data analyzer configured to analyze the multimedia data according to a format of the multimedia data and to select a location of a data region bit string of multimedia data into which position information is to be inserted; And And a location information tagging unit for inserting the location information into a location of a bit string selected by the data analysis unit. The method of claim 1, If the format of the multimedia data is a still image, And the data analyzer selects, as the location information insertion position, a field in which the data is not recorded among the bit strings in which the multimedia data is compressed in a predetermined number of bytes. The method of claim 1, If the format of the multimedia data is a still image, In the pixel array of the multimedia data, the data analyzer selects a pixel having a difference in pixel value from adjacent pixels smaller than a preset value as a location information insertion position, And the location information tagging unit removes a pixel value of the selected pixel and inserts location information. The method of claim 1, If the format of the multimedia data is a still image, The data analyzer selects a predefined pixel as a location information insertion position in the pixel array of the multimedia data, And the location information tagging unit removes a pixel value of the selected pixel and inserts location information. The method of claim 1, If the format of the multimedia data is a video, And the data analyzing unit selects a predefined region as a location information insertion position in a prediction frame having a predefined order among the basic frames and the prediction frames constituting the video. Communication unit for receiving the multimedia data embedded with the location information; A tagging algorithm analyzer for analyzing a format of the multimedia data; And And a location information extraction unit for extracting location information inserted into a data area of a bit string of the multimedia data according to the format of the multimedia data. The method of claim 6, If the format of the multimedia data is a still image, And the location information extracting unit extracts location information from a field in which data is not recorded among bit streams compressed in a predetermined number of bytes. The method of claim 6, If the format of the multimedia data is a still image, The location information extracting unit extracts location information from a pixel value of a pixel in which a difference between pixel values from adjacent pixels is greater than a predefined value in the pixel array of the multimedia data, and converts the pixel value of the pixel into a pixel of adjacent pixels. And interpolating using a value. The method of claim 6, If the format of the multimedia data is a still image, And the location information extracting unit extracts location information from a pixel value of a predefined pixel, and interpolates the pixel value of the pixel by using pixel values of adjacent pixels. The method of claim 6, If the format of the multimedia data is a video, And the location information extracting unit extracts location information from an area corresponding to a predefined area in a prediction frame in a predefined order. (a) analyzing, by the location information tagging device, the format of the multimedia data; (b) the location information tagging device analyzing the multimedia data according to the format of the multimedia data and selecting a location of a data area bit string of the multimedia data into which the location information is to be inserted; (c) measuring location of the location information tagging device to generate location information; And and (d) inserting the location information into the location selected in the step (b), by the location information tagging apparatus. The method of claim 11, If the format of the multimedia data is a still image, The step (b) of the step of tagging the location information to the multimedia data, characterized in that for selecting the location information insertion position of the field in which the data is not recorded among the bit stream in which the multimedia data is compressed by a certain number of bytes. The method of claim 11, If the format of the multimedia data is a still image, In the step (b), in the pixel array of the multimedia data, a pixel whose difference in pixel value from adjacent pixels is smaller than a preset value is selected as the location information insertion position, In the step (d), the location information tagging method of the multimedia data, wherein the pixel value of the selected pixel is removed and the location information is inserted. The method of claim 11, If the format of the multimedia data is a still image, In step (b), in the pixel array of the multimedia data, a predefined pixel is selected as a position information insertion position, In the step (d), the location information tagging method of the multimedia data, wherein the pixel value of the selected pixel is removed and the location information is inserted. The method of claim 11, If the format of the multimedia data is a video, In the step (b), the location information tagging of the multimedia data comprises selecting a predefined area as a location information insertion position in a prediction frame in a predefined order among the basic frames and the prediction frames constituting the video. Way. (e) a communication unit configured to receive multimedia data into which location information is inserted; (f) analyzing a format of the multimedia data; And and (g) extracting location information inserted into a data area of a bit string of the multimedia data according to the format of the multimedia data. The method of claim 16, If the format of the multimedia data is a still image, And (g) extracting the location information from the field in which no data is recorded among the bit streams compressed in a predetermined number of bytes. The method of claim 16, If the format of the multimedia data is a still image, In the pixel array of the multimedia data, the step (g) extracts position information from a pixel value of a pixel in which a difference between pixel values of adjacent pixels is greater than a predefined value, and extracts the pixel value of the pixel from the adjacent pixels. A method of tagging location information in multimedia data, comprising interpolating using pixel values. The method of claim 16, If the format of the multimedia data is a still image, In the step (g), the location information is extracted from the pixel value of the predefined pixel, and the location information tagging method of the multimedia data using the pixel value of the adjacent pixels is interpolated. The method of claim 16, If the format of the multimedia data is a video, And (g) extracting location information from a region corresponding to a predefined region in a prediction frame of a predefined sequence. 21. A recording medium in which a method of tagging position information in a multimedia data according to any one of claims 11 to 20 is readable by a computer and recorded by executable program code.

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