KR100411587B1 - Apparatus and method of storing position information and motion picture synchronizingly and applying that in geographic information system - Google Patents

Abstract

The present invention relates to a method and apparatus for synchronizing video and location information, and a geographic information system using the same.

The present invention provides a self-signal or time stamp of a still image and a video obtained from a location information acquisition device such as GPS and an image acquisition device such as a digital camera, which are beginning to be attached to a portable terminal using the next generation wireless communication technology represented by IMT-2000. Synchronizes through the generator, and stores it in the form of a video in the storage device. Subsequently, the database is accessed using the decoded location information during playback, and the video and the geospatial information at the same location are synchronized and displayed on the screen.

According to the present invention, the video and the location information can be synchronized, multiplexed, stored and managed, and even in the case of playback, the contents of the map can be confirmed in real time.

Description

A method and apparatus for synchronizing video and location information, and a geographic information system using the same, and a geographical information system using the same.

The present invention relates to a method and apparatus for synchronizing and multiplexing one or more video sequences with location information (eg, GPS signals) of the video, and to a geographic information system (GIS) for providing geographic information using multiplexed information.

Until now, there are various methods of synchronizing and storing multimedia data such as video, audio, and text, and MPEG (Moving Picture Experts Group) is a representative standard.

Prior art related to this is a computer digital map and a bit by using the DGPS (differential global positioning system) device and a database of computer digital maps and a file stored in the form of a continuous bitmap in association with a database of computer digital maps. Korean Patent No. 1996-28756 (1996.) entitled "Method of Supporting and Displaying Video on Computer Numerical Map Using Satellite Navigation System, and Supporting System of Video", which is constructed so as to be mutually callable while supporting a map image. 7. There is 16).

In addition, this technique uses a relational database between the road linearity and features of a computer digital map and the roadlinearity and features of a bitmap image obtained by performing a method of supporting a bitmap image on a computer digital map using a satellite navigation device. A method for displaying a sequential bitmap image for calling a feature and a road link between a computer digital map and a bitmap image is described.

However, multimedia in the Geographic Information System (GIS) including this prior art merely shows the attribute information by connecting images and images in the form of bitmaps on a file, and in the form of a file obtained from one or more input sources. Attempts have not been made to connect and store the bundled video and location information to analyze the surrounding situation and spatial information.

The technical problem to be achieved by the present invention is to solve such a conventional problem, the purpose of providing a more realistic and realistic information to be able to view the map data representing the region and the matched with the video of the field. have.

In particular, the technical problem to be achieved by the present invention is to synchronize and multiplex the image sequence obtained from at least one image acquisition device and the position information of the image acquisition device.

In addition, the technical problem to be achieved by the present invention is to reproduce the synchronization and multiplexed information in conjunction with the geographic data, so that the contents of the map from the image can be confirmed in real time.

1 is a view showing the structure of a video processing apparatus and a synchronization information processing device according to an embodiment of the present invention.

FIG. 2 is a block diagram of the synchronization device of FIG. 1.

3 is a block diagram illustrating an apparatus for inserting location information data into a video signal when a time sequence image is stored in a video standard.

4 is a block diagram illustrating the multiplexing apparatus of FIG. 1.

5 is a detailed block diagram illustrating the packetization unit of FIG. 4.

6 is a diagram illustrating a structure of a geographic information system that reproduces a time series image and a map of a specific location synchronized with the time series image.

FIG. 7 is a diagram illustrating an example of a configuration of a user side viewer when displaying information synchronized with location information and a video using GIS map data.

A synchronization processing method according to an aspect of the present invention for achieving the above object is a method of synchronizing the position information of the image acquisition device obtained by the position acquisition device and the acquired video from at least one image acquisition device, the image Acquiring and synchronizing the image and the location information simultaneously by providing the same synchronization signal to the acquisition device and the location acquisition device; Adding a time stamp generated in synchronization with the synchronization signal to the obtained image and location information bit stream; And storing the synchronized image and the position bit string.

Here, in the storing step, when the synchronized image and the location information are stored in the hard disk, the storing is performed in the form of an indexing file using the time stamp as a key.

In the storing step, when the synchronized image and the location information are stored in a video tape according to an analog video standard by interlaced scanning, the location information is stored in a blanking period between fields.

In the storing step, when storing the synchronized video and the location information as a compressed video, one frame is encoded and the location information synchronized to the compressed bit stream is inserted into a PUD (Picture User Data). A first step of creating a bit string of the first; And a second step of adding the time stamp to the header of the packet and adding the compressed video bit string including the location information to the payload of the packet to packetize and multiplex the bit string.

In accordance with another aspect of the present invention, a synchronization processing device is a device for synchronizing position information of an acquired video and a position acquisition device acquired by at least one or more image acquisition devices. A synchronizing signal is generated by an acquiring device to generate a synchronizing signal generator and a time stamp of absolute time according to the synchronizing signal so that the image of the image acquiring device and the position information of the position acquiring device are simultaneously acquired. A synchronization device including a time stamp generator for adding the time stamp to an information bit string; And a storage device for storing the synchronized image and location information. Here, the storage device stores the synchronized image and the location information bit string in a file form using the time stamp as an index.

In addition, the recording apparatus may further include a recording device for recording the image and position information bit stream synchronized by the synchronization device on a video tape in accordance with the analog video standard by interlaced scanning.

The recording apparatus may include a vertical interval time code (VITC) inserting apparatus for inserting a time stamp generated by the time stamp generating apparatus into a predetermined scan line of the video bit string; A device for temporarily storing the location information acquired by the location acquisition device; A caption insertion device for inserting the position information in a text format into a predetermined scan line of the image bit string into which the time stamp is inserted; And an image recording device for storing the image bit string into which the time stamp and the position information are inserted, on a video tape.

In addition, the synchronization processing device having such a feature may further include a multiplexing device for encoding and multiplexing the synchronized image and the location information bit string in the synchronization device, wherein the multiplexing device is configured to synchronize the synchronized location information. An encoding device inserted into a private user data (PUD) region of a compressed bit string of a frame and outputting the same as a video elementary stream (ES); And a packetizer for packetizing and multiplexing the time stamp, the image data, and the location information data into one video PES, and outputting them in a file form.

Here, the packetizing apparatus includes an AU detecting apparatus for detecting an AU (Access Unit) in the video ES; A PES header generating device for encoding the time stamp; A storage device for storing the AU detected until the ES is reconfigured to a payload of a predetermined size; And a packet combiner configured to complete one PES packet by adding the payload to the PES header.

According to another aspect of the present invention, a geographic information system is a geographic information system that provides geographic information based on location information synchronized with a video. The geographic information system demultiplexes and decodes the location information and the multiplexed video, which are synchronized with the video. A demultiplexer for separating information; A device for temporarily storing an image output from the demultiplexer; A database in which map data is stored; And a display device for fetching map data from the database using the demultiplexed location information and synchronizing and outputting an image stored in the storage device, wherein the video and the location information are synchronized with at least one image in synchronization with the same synchronization signal. A time stamp, which is acquired and synchronized by the acquisition device and the location acquisition device, respectively, is generated in synchronization with the synchronization signal.

In addition, a geographic information system according to another aspect of the present invention is a geographic information system for providing geographic information on the basis of position information of the video acquisition device obtained by the acquisition video and the position acquisition device from at least one image acquisition device, Generating a synchronization signal by the image acquisition device and the position acquisition device to generate a synchronization signal generator and a time stamp of absolute time according to the synchronization signal to simultaneously acquire the image of the image acquisition device and the position information of the location acquisition device And a time stamp generator for adding the time stamp to the obtained image and location information bit streams; a multiplexing device for encoding and multiplexing the image and location information bit streams synchronized by the synchronization device; A demultiplexer for demultiplexing and decoding the location information and the multiplexed video synchronized with the video and separating the image and the location information; A device for temporarily storing an image output from the demultiplexer; A database in which map data is stored; And a display device for fetching map data from the database using the demultiplexed location information and synchronizing and outputting an image stored in the storage device.

In the geographic information system having such a feature, the display apparatus generates a query based on the location information of each frame of the image extracted through the demultiplexing process, and is then stored in a database using the generated query. Import the map data and synchronize the map data with the video to play on the screen.

In addition, when a specific position is designated in the reproduced map on the screen, the display apparatus searches for the image corresponding to the designated position from the storage device using the time stamp as an index and displays it on the screen.

The above objects, features and advantages will become more apparent from the following detailed description taken in conjunction with the accompanying drawings. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

First, a synchronization and multiplexing method to be applied in the present invention will be described.

Video multiplexes video, audio, and data in sync. When the encoded bitstream and other bitstreams of video or audio are combined and applied to an application, the integrated bitstream including the synchronization signal is made into a unique bitstream that is stored in a storage media or a network. It may be necessary to make it in a format suitable for a physical format or a protocol, and some auxiliary data may be added and used depending on the application.

The present invention relates to a method and apparatus for synchronizing and multiplexing a location information and an image with a PTS (Presentation Time Stamp) as an application of the video system. Here, a representative MPEG-2 system is described as an example.

The video and audio signals are respectively compressed and coded by the encoder and then transmitted to the next stage. This compressed signal is called ES (Elementary Stream) in the MPEG-2 standard. ES is a packetized elementary stream (PES) packet as the first step for transmission. In the case of video, an image is usually compressed into a single PES. The parts for synchronization in the PES header of the video are the Presentation Time Stamp (PTS) and Decoding Time Stamp (DTS) fields. The PTS represents the playback time of each access unit (in the case of video, one frame), and the DTS represents the time when decoding should start at the decoder. If the reference time coincides with the times specified by the PTS and DTS, playback or decoding of the access unit starts. The reason for the absence of the DTS field in the audio packet header is that audio data generally has the same decoding time and reproduction time.

However, in the case of video data, a difference occurs between PTS and DTS for two reasons. First, the video data stream does not have the same order of transmission and reproduction of frames. MPEG video data consists of I-frames (Intracoded-frame), P-frames (Predictive-frame), and B-frames (Bidirectionally-coded-frame). P frame information is required. Therefore, the I / P frame must then be transmitted and decoded in advance, even though the playback order is behind. An I / P frame decoded in advance according to its own DTS information has to wait until the reference time matches the time of the PTS field in the buffer. Another reason for the difference between PTS and DTS in video data is the computational overhead of the decoder.

In the present invention, only the synchronization of the video and the location information is considered without considering the audio signal, and the video may be extended to a plurality of videos. Although there may be various ways of synchronizing the location information with the storage method of the video signal, the most common synchronization of the compressed video stream and the location information will be described first.

One of the easiest ways to synchronize the video stream with the location information is to consider the location information stream as one bit stream and synchronize the two bit streams with the PTS. In other words, a synchronization signal is given to each of the video and the location information for synchronization. Another method is to multiplex video, location information, and sync signals into a single synchronized bit stream. The location information has a small amount of data of several tens of bytes, and each information comes out one frame per video, so it is easy to insert a video bit stream. MPEG stipulates that a user can arbitrarily insert data into each picture. In the case of a TV program, subtitle information is put in this user data area. In the present invention, location information is put into one bit string without any synchronization.

In addition, in case of storing the video stream in the video stream state without compressing the video stream, the time stamps such as PTS and DTS may be stored in the order of acquiring the video signals. In this case, the synchronization information may be identified by inserting a time code for each frame or field. Adding location information along with the time code also enables a single uncompressed video stream. In other words, when recording on videotape, this location information can be easily inserted.

There are two types of time codes that are inserted into TVs or films: Longitudinal Time Code (LTC) and Vertical Interval Time Code (VITC). Both are numbered per hour in the format of hours, minutes, and seconds. VITC can attach it to each field and also include an 8-bit CRC for error detection. The two specifications differ in how they store timecode. LTC stores an 80-bit code in an audio track simultaneously with a video signal. On the other hand, the VITC composed of 90 bits stores two horizontal scan lines among the blanking periods (the 10th to the 20th scanlines) of each field. Each field stores a 90-bit code twice. Refer to SMPTE 12M for details.

This time code represents the time at the time of acquiring the location information and the image, and can be easily extended by adding a time code for each image to the time when the images are simultaneously acquired even when synchronizing one or more images. Normally in computer vision, two or more different images are needed to determine the three-dimensional position. In this case, this time code makes it easy to synchronize the images.

There is also a closed captioning program in which TVs send captions in synchronization with voice. In the case of EIA 608, the subtitle is transmitted on the 21st scanline of the field and contains 2 bytes of information in one scanline. Since the MSB (most significant bit) of each byte is a parity bit, it can contain 14 bits of information per field. Closed captions carry caption or text information here. The EIA 708B is compatible with the NTSC method of the 608 and can hold 36 bytes of information. In the present invention, the location information is loaded on the TV NTSC like a caption broadcasting, and can be stored on a video tape in the NTSC method. The location information may be displayed on a map in association with a spatial geographic information system (GIS). When reproducing the stored video bit stream, the location information may continuously indicate a location synchronized with the frame image on the map.

Generally, geographic information system puts property and map data into database and manages it. In most cases, the location and geographic ranges are constructed in the form of a query to access a database, take out maps and attribute information of the area, and prepare data for display. Therefore, by designating the location information synchronized with the video and the region shown on the screen, it is possible to output the region in the form of a map from the database.

Using this, in the present invention, the multiplexed and stored video is subjected to a demultiplexing process to separate the image and the location information, and then obtain a predetermined portion of the map data stored in the database in advance using the location information of the corresponding frame. The map data is synchronized with the video and output on the screen. When specifying an arbitrary position from the map, the map data can be moved and played back to the corresponding frame in the video using time stamp information.

Now, a synchronization processing apparatus for moving pictures and location information for use in a GIS by applying the above-described synchronization and multiplexing method will be described first, and then a GIS system using the same will be described.

1 is an overall structural diagram of an apparatus for synchronizing video and location information according to an embodiment of the present invention.

The synchronization processing device of the moving picture and the location information shown in FIG. 1 includes a camera 110, a location acquisition device 120, a synchronization device 130, a multiplexing device 140, and a storage unit 150.

Here, one or more cameras 110 may be provided to obtain an image desired by a user. The position acquisition device 120 is a device for acquiring position information when the camera 110 acquires an image. The position acquisition device 120 may use GPS, etc., which has begun to be attached to a portable terminal to which the next generation wireless communication technology represented by IMT-2000 is applied. have.

In the exemplary embodiment of the present invention, the image acquired from the camera 110 and the position information acquired from the position acquisition apparatus 120 are synchronized and stored in the storage unit 150, or the image and position information and the synchronization signal are multiplexed. The storage unit 150 stores.

The synchronizing device 130 acquires a video (time series image) and location information at the same time by synchronizing the camera 110 and the position acquiring device 120 to the storage unit and synchronizes and provides the multiplexing device 140. 2, the detailed structure is shown.

As shown in FIG. 2, the synchronization device 130 includes a synchronization signal generator 131 and a time step generator 132. The synchronization signal generator 131 of the vaporization device 130 simultaneously transmits the synchronization signal to the position acquisition apparatus 120 and the camera 110 so that the image and the position information are acquired at the same absolute time. The synchronization signal generated by the synchronization signal generator 131 is also input to the time stamp generator 132, and the time stamp generator 132 generates a time stamp indicating an absolute time in synchronization with the synchronization signal.

In the case of synchronizing a plurality of cameras 100 using a time stamp, it may be extended and applied. The time stamp generated as described above is added to each image and the location information, thereby connecting the two pieces of information, and the time stamp can be used to find the location information obtained at the same time in the video stream.

The synchronized video bit stream and the location information bit stream are finally stored in the storage unit 150 by constructing a database DB using the time stamp as an index, and constructing a database DB using the location information and the file name of the video. As the storage unit 150, a storage medium such as a hard disk may be used.

When the image is input in real time from the camera, as described above, instead of storing the synchronized image bit stream and the location information bit stream in the form of an indexing file, the location information is stored using a user data area such as a caption area of the video. Can be. That is, an apparatus having the configuration as shown in FIG. 3 may be further provided and stored in a videotape according to an analog video standard by an interlaced scan method.

The recording device 160 for synchronizing and storing the moving picture and the positional information shown in FIG. 3 on a video tape includes a VITC inserter 161 for inserting a time stamp into a predetermined scan line of a video (video bit string) signal; A buffer 162 for temporarily storing the position information, a caption inserter 163 for inserting the position information in a text format on a predetermined scan line of the time stamped video signal, and a time stamp and position information inserted therein. And a VTR 164 that stores the video signal on a video tape.

Here, the time stamp inserted into the video signal is inserted into the video signal during the 10-20 th scan line in the form of a vertical interval time code (VITC) by the VITC inserter 161. After the location information is stored in the buffer 162, the caption inserter 163 encodes and inserts the text into the 21st scan line in which the caption of the video signal with the time stamp is inserted. The final bit string is stored on the video tape by the VTR 164.

Meanwhile, the synchronized location information bit stream and the video bit stream may be processed into one bit stream and a time stamp may be added.

4 illustrates a multiplexing device 140 that encodes, multiplexes, and stores the synchronized location information bit stream and the image bit stream, and includes an encoder 141 and a packetizer 142.

In general, since a video is compressed to reduce data, a compressed bit string is created in FIG. 4. In the present embodiment, the compression standard follows the standard of MPEG-2, but is not limited thereto.

As shown in FIG. 4, the synchronized video bit stream (video signal) and the location information bit stream are encoded by the encoder 141 and output as a video compressed stream. At this time, the location information is inserted into a private user data (PUD) region of the compressed bit string of the synchronized frame to make a video elementary stream (ES). On the other hand, the synchronization information is delivered to the packetized elementary stream (PES) packet header by transmitting the time stamp to a presentation time stamp (PTS), and the time stamp, video data, and location information data are packetized from the packetizer 142 to one video PES. The data is generated in a bit string by multiplexing and multiplexing and stored in a storage unit 150 which is a recording medium in a file form.

5 illustrates in detail the packetization unit of FIG. 4. The packetizer 140 includes an access unit detector (AU) 142a, a PES header generator 142b, an ES buffer 142c, and a packet combiner (MUX) 142d.

First, the AU detector 142a detects an AU (frame unit) in the video ES, and encodes a time stamp in the PES header generator 142b. On the other hand, the ES that has been detected by the AU is stored in the ES buffer 142c until reconfigured to payload of a certain size. The packet combining unit (MUX) 142d adds this payload to the PES header to complete one PES packet.

The multiplexing device 140 having such a structure has a time index and position information when images input from one or more cameras 110 are already stored in an external storage device such as a hard disk as a plurality of files in time series. Images can be organized into tables for storage management.

6 is a structural diagram of a GIS, that is, a geographic information system, which is a device that utilizes data synchronized / multiplexed using the synchronization processing device of FIG. 1. As shown in FIG. 6, the geographic information system includes a demultiplexer 210, a buffer 220, a GIS database 230, and a display 240, which include a demultiplexer and a decoder, to identify a time-series image and synchronize the same. Play the map of the location together.

As described above, the input video is assumed to be multiplexed by synchronizing the location information data and the image.

The video in which the video and the location information are synchronized is separated and decoded into the location information data and the image while passing through the demultiplexer 211 and the decoder 212 in the demultiplexer 210.

The video signal of the decoded signal is stored in the buffer 220 and waits until it is synchronized with the map data. The separated location information may be output on the screen if necessary, but in the present embodiment, the separated location information is stored as a variable and used as a basic parameter (query information) for obtaining map data from the GIS database 230.

Based on the location information, the map data of the corresponding location retrieved from the GIS database 230 is output to the screen in synchronization with the image of the buffer 220 by the display unit 240, and at this time, the video player and the map viewer ( map viewer) is used to display video and map data respectively.

FIG. 7 is a diagram illustrating an example of a configuration of a user side viewer when displaying location information and video synchronized information together with map data of a GIS.

As the video progresses sequentially, the map data is continuously updated and displayed.If necessary, if a random location is specified on the map, the control is changed to the corresponding frame of the video based on the time stamp and location information of the index table. Any section can be played repeatedly or the playback speed can be changed.

According to the embodiment of the present invention as described above, a CCD camera and a GPS capable of measuring a position can be mounted on a moving object to move along a road and acquire surrounding facilities and location information. In this case, the sequentially photographed image and the position signal may be internally synchronized and multiplexed and stored, or the bitstream may be transmitted by using wired or wireless.

The multiplexed, stored or transmitted bitstream can be displayed independently after image and location information is separated through the demultiplexer, or synchronized with the map when the map data is ready. In the case of outputting on the screen in synchronization with the map, the user or the person in charge of the work can feel a lot more real than the case of not knowing the location information or displaying it on the screen in the form of a texture. It becomes possible.

While the embodiments of the present invention have been described above, the present invention is not limited to the above embodiments, and various other modifications and changes are, of course, possible. For example, the GIS is described as reproducing map information using information stored by synchronizing image and position information by a synchronization processing device. However, the demultiplexer including the synchronization processing device, the demultiplexer, and the decoder is described. It may be implemented in a form including a buffer, a display and a map database.

According to the present invention described above, the video and the location information can be synchronized, multiplexed and stored and managed, and even in the case of playback, it is possible to check the contents of the map in real time by outputting it on the screen in conjunction with the map data of the GIS database. .

Claims (15)

A method for synchronizing the acquired video from at least one image acquisition device and the position information of the image acquisition device obtained by the position acquisition device, Providing the same synchronization signal to the image acquisition device and the location acquisition device to simultaneously acquire and synchronize the image and location information; Adding a time stamp generated in synchronization with the synchronization signal to the obtained image and location information bit stream; And Storing the synchronized image and location bit stream Synchronization processing method comprising a. The method of claim 1, The storing step, And storing the synchronized image and the location information in the form of an indexing file using the time stamp as a key. The method of claim 1, The storing step, And storing the positional information in a blanking period between fields when the synchronized image and the positional information are stored on a videotape in accordance with an analog video standard by interlaced scanning. The method of claim 1, The storing step, When storing the synchronized image and location information as a compressed video, A first step of encoding one frame into a compressed bit string and inserting position information synchronized to the frame into a picture user data (PUD) to form one bit string; And And a second step of adding the time stamp to a header of a packet and adding and compressing the compressed video bit string including the position information to the payload of the packet to packetize and multiplex the bit string. An apparatus for synchronizing the acquired video from at least one image acquisition device and the position information of the image acquisition device obtained by the position acquisition device, Generating a synchronization signal by the image acquisition device and the position acquisition device to generate a synchronization signal generator and a time stamp of absolute time according to the synchronization signal to simultaneously acquire the image of the image acquisition device and the position information of the location acquisition device And a time stamp generator for adding the time stamp to the obtained image and location information bit streams; And Storage device for storing the synchronized image and location information Synchronous processing apparatus comprising a. The method of claim 5, And the storage device stores the synchronized image and the location information bit string in a file form using the time stamp as an index. The method of claim 5, And a recording device for recording the synchronized image and the positional information bit stream in the synchronizing device on a videotape in accordance with an analog video standard in an interlaced scanning manner. The method of claim 7, wherein The recording device, A vertical interval time code (VITC) insertion device for inserting a time stamp generated by the time stamp generator into a predetermined scan line of the image bit stream; A device for temporarily storing the location information acquired by the location acquisition device; A caption insertion device for inserting the position information in a text format into a predetermined scan line of the image bit string into which the time stamp is inserted; And And an image recording device for storing the video bit string into which the time stamp and position information are inserted, on a video tape. The method of claim 5, And a multiplexing device for encoding and multiplexing the image synchronized with the location information bit string in the synchronization device. The method of claim 9, The multiplexing device, An encoding apparatus for inserting the synchronized position information into a private user data (PUD) region of a compressed bit string of a synchronized frame and outputting the synchronized position information as a video elementary stream (ES); And And a packetizer for packetizing, multiplexing, and outputting the time stamp, the image data, and the location information data into one video PES. The method of claim 10, The packetizing device, An AU detector for detecting an access unit (AU) in the video ES; A PES header generating device for encoding the time stamp; A storage device for storing the AU detected until the ES is reconfigured to a payload of a predetermined size; And And a packet combining device that completes one PES packet by adding the payload to the PES header. In a geographic information system that provides geographic information based on location information synchronized with a video, A demultiplexer for demultiplexing and decoding the location information and the multiplexed video synchronized with the video and separating the image and the location information; A device for temporarily storing an image output from the demultiplexer; A database in which map data is stored; A display device for fetching map data from the database using the demultiplexed location information and synchronizing and outputting an image stored in the storage device; Including; The video and the location information are acquired by the at least one image acquisition device and the location acquisition device, respectively, in synchronization with the same synchronization signal, and geographic information, characterized in that a time stamp generated in synchronization with the synchronization signal is added. system. A geographic information system for providing geographic information based on location information of an image acquisition device acquired by a position acquisition device and a moving image acquired from at least one image acquisition device, Generating a synchronization signal by the image acquisition device and the position acquisition device to generate a synchronization signal generator and a time stamp of absolute time according to the synchronization signal to simultaneously acquire the image of the image acquisition device and the position information of the location acquisition device And a time stamp generator for adding the time stamp to the obtained image and location information bit streams; A multiplexing device encoding and multiplexing the image synchronized with the location information bit string in the synchronization device; A demultiplexer for demultiplexing and decoding the location information and the multiplexed video synchronized with the video and separating the image and the location information; A device for temporarily storing an image output from the demultiplexer; A database in which map data is stored; A display device for fetching map data from the database using the demultiplexed location information and synchronizing and outputting an image stored in the storage device; Geographic information system comprising a. The method according to claim 12 or 13, The display device generates a query based on the location information of each frame of the image extracted through the demultiplexing process, and then imports map data stored in a database using the generated query and map data and video. Geographic information system, characterized in that for playing on the screen by synchronizing. The method according to claim 12 or 13, And the display apparatus, when a specific position is designated on the reproduced map on the screen, searches for the image corresponding to the designated position from the storage device using the time stamp as an index and displays the image on the screen.