TWI387940B - Traffic information analysis system and method using geographic information module and aerial map - Google Patents

Description

Traffic information analysis system and method using geographic information module and aerial photograph

The invention relates to a traffic information analysis system and method using a geographic information module and an aerial photograph, in particular to a system for collecting traffic information by using a geographic information module assisting aerial image analysis technology.

In the intelligent traffic management system, traffic information collection is the cornerstone of it. A good source of traffic information can be used to achieve subsequent applications. Today's traffic information collection method is no more than using artificial intersections to calculate traffic flow, or at a fixed point. Traffic information collection is carried out by counting the number of passing vehicles and the speed of the vehicle by erecting a camera or a vehicle detector. However, manually collecting traffic flow information usually takes 2 ^to 3 people to record at the same intersection. The data can not be immediately reported and analyzed, and can only be used as historical data for future reference.

For traffic information collection by means of fixed-point camera or vehicle detector, it is necessary to set up a camera or vehicle detector on each road segment, and after a period of shooting, the traffic analysis can be performed, not only in timeliness, but also in time. The traffic flow data obtained is only the "section" flow or driving speed of the road section. If the accuracy of the data is to be improved, the camera or vehicle detector must be widely distributed throughout the road section; if an accident is to be made For detection, it is also necessary to deploy a large number of cameras in order to remove dead ends and achieve full monitoring.

There are other methods that use image processing to deal with aerial photos, first distinguish the road area, and then analyze the traffic flow for the road area. The method used is more complicated and the efficiency is also poor.

It can be seen that there are still many shortcomings in the above-mentioned methods of use. It is not a good design and needs to be improved.

In view of the shortcomings derived from the above-mentioned conventional methods, the inventors of the present invention have improved and innovated, and after years of painstaking research, they have successfully developed and developed a traffic information analysis system using geographic information modules and aerial photos. method.

The purpose of the present invention is to provide a traffic information analysis system and method using a geographic information module and an aerial photo map, which is to expand the functions of a traditional camera or vehicle detector traffic information collecting system to a geographic information module and an aerial photo traffic. An information gathering system to quickly obtain overall traffic information and provide an easy-to-use image analysis method for aerial photography to obtain traffic information.

A traffic information analysis system and method using the geographic information module and the aerial photo map, which can achieve the above object, comprising: an aerial photographing device for photographing an aerial photograph and a target positioning for obtaining a traffic information area The module is connected to the aerial photography device for capturing the aerial image and adding the latitude and longitude information, a wireless communication system, which is connected with the aerial photography device, and returns the captured aerial image. To the traffic flow analysis system for traffic information analysis and a geographic information module, which uses the coordinates carried in the aerial photo to identify a specific area as a road area and corresponds to the road name and an image analysis module. The image of the road area in the aerial image is analyzed to obtain traffic information, and a database for storing traffic information analyzed by the image analysis module to provide subsequent applications.

Please refer to FIG. 1 and FIG. 2 , which is a traffic information analysis system using a geographic information module and an aerial photograph, comprising: an aerial photographing device 1 for photographing an area for obtaining a traffic information area. According to the figure, a label positioning module 11 is connected to the aerial image capturing device for capturing the aerial image and adding the latitude and longitude information; wherein the aerial image capturing device 1 can use the satellite shooting mode. , an aerial photography mode, or a global positioning system (GPS) positioning method; a wireless communication system 2, which is connected to the aerial image capturing device 1 and transmits the captured aerial image for traffic information analysis; wherein The wireless communication system 2 can use a radio mode; a traffic flow analysis system 3 is connected through the wireless communication system 2 to the aerial image capturing device 1, and further includes: a geographic information module 31, which utilizes the aerial image The coordinates identify a specific area as a road area and correspond to the road name; an image analysis module 32 analyzes the image of the road area in the aerial image to obtain traffic information; 33. The system is configured to store traffic information that is analyzed by the image analysis module to provide a follow-up application. The geographic information module 31 further includes pre-stored data of all road areas that need to obtain traffic information, such as forming a road. The latitude and longitude points of the area polygon, the line segment, and various attribute data of the road area.

The geographic information module 31 further includes an image of the road section without any means of transportation as a base map for comparison, such as road markings, traffic signs, road trees, etc., and various types of vehicles, for example, : Model images of cars, buses, connecting cars, locomotives, pedestrians, etc., for identification.

Referring to FIG. 3, the present invention provides a method for analyzing traffic information using a geographic information module and an aerial photograph, and includes a geographic information module to assist in identifying a road area to be tested in the aerial photograph, and further includes: steps A: The geographic information module calculates an aerial photo with latitude and longitude coordinates data and all road regions to obtain a road region 301 intersecting with the aerial image; Step 2: latitude and longitude coordinates of the road region where the aerial image is intersected Converted to pixel coordinates 302 in the aerial image; Step 3: The pixel coordinates of the road area are used as input data 303 of the traffic information image analysis system.

Please refer to FIG. 4, which is a method for analyzing traffic information using a geographic information module and an aerial photograph, including a step of estimating traffic flow information by using a total area of a road occupied by a vehicle, and each of the steps will be distinguished. The proportion of the type of vehicle to the area of the road area determines the traffic flow value of the road, the correspondence between the proportion of the vehicle and the traffic flow, and the correspondence of each road can be recorded according to the width characteristics of each road. For example, 10% of the area of the vehicle corresponds to 20% of the traffic flow; 50% of the area of the vehicle corresponds to 100% of the traffic flow, and further includes: Step 1: The corresponding road area and no vehicle in the aerial picture The base image is compared to obtain an image 401 of the non-base image; step 2: comparing the image of the non-base image with the feature image of each model to determine whether the image of the non-base image is traffic Tool 402; Step 3: Calculate the total area of the image area belonging to the vehicle, and calculate the area of the road area Fraction 403; Step 4: Look up the table by vehicle area ratio to determine the current traffic flow 404 of the road.

Please refer to FIG. 5, which is a method for analyzing traffic information using a geographic information module and an aerial photo map, and includes a step of estimating traffic speed by using traffic flow information, which is based on the speed limit data of each road. The corresponding relationship between the feasible vehicle speed and the traffic flow is stored in the database for reference. When the speed limit of a certain road is 60km, the traffic flow 50% corresponds to a speed of 55km; the traffic flow 80% corresponds to a speed of 40km; The relationship includes: Step 1: Obtain the current traffic flow 501; Step 2: Check the current traffic flow to obtain the feasible vehicle speed information 502.

Please refer to FIG. 6 , which is a traffic information analysis method using a geographic information module and an aerial photo map according to the present invention, including a traffic accident for comparing the same area of the same area of the vehicle in the same time in the aerial photograph of the continuous time. The monitoring step is to analyze the area and location data of various vehicles by the image analysis module in the database; and compare them through the program, and find that the same position is in the same position for a period of time (x minutes). The area is occupied by the vehicle, and it can be determined that there is a possibility of a traffic accident, and further includes: Step 1: comparing the corresponding road area in the aerial picture with the base image without the vehicle to obtain The non-base image area image 601; step 2: comparing the non-base image area image with the characteristic image of each type of vehicle to determine whether the non-base image area image is the vehicle 602; Step 3: will belong to the traffic The position, size, and characteristics of the image area of the tool are recorded 603; Step 4: Compare the historical data of continuous time, whether the same exists Vehicle image area 604 of setting, size, and feature; Step 5: If a vehicle image area of the same position, size, and feature exists in the aerial picture of continuous time, a traffic accident alarm is issued, and the monitoring personnel perform manual comparison. Confirm if it is a traffic accident event 605.

Please refer to FIG. 7 , which is a method for analyzing traffic information using a geographic information module and an aerial image according to the present invention, including a road for comparing non-vehicle regions of the same size and the same area in an aerial photograph of continuous time. The damage monitoring step is used for traffic accident monitoring. If the image analysis module finds an area in the road area that does not belong to the base map, but the area cannot match the image pattern of any vehicle, and the area After a period of time, its position and size have not changed, it can be judged as suspected road damage, including: Step 1: Compare the corresponding road area in the aerial picture with the base image without vehicle, Obtaining an area image 701 of the non-base image; Step 2: Comparing the area image of the non-base image with the feature image of each model vehicle to determine whether the area image of the non-base image is the vehicle 702; Step 3: The location, size, and characteristics of the non-vehicle image area are recorded 703; Step 4: Compare historical data of continuous time, whether or not Non-vehicle image area 704 of the same position, size, and feature; Step 5: If a non-vehicle image area of the same position, size, and feature exists in the aerial picture of continuous time, a road damage alarm is issued, and the monitoring personnel perform manual Compare to confirm if the road is damaged 705.

Please refer to FIG. 8 , which is a method for analyzing traffic information using a geographic information module and an aerial photo map, and includes a step of integrating traffic information obtained by an aerial photograph of different regions, and is a plurality of aerial photographs. The regional traffic information generated is integrated into a wide range of traffic information. As long as the traffic information obtained by the roads of the same road code is combined, the following includes: Step 1: Temporarily store the traffic information obtained from the aerial maps of different regions. 801 in the database; Step 2: Average the traffic information of different areas in the database but belonging to the same road for data integration 802.

The traffic information analysis system and method using the geographic information module and the aerial photo map provided by the invention have the following advantages when compared with other conventional technologies:

1. The present invention can obtain instant and correct traffic information.

2. The invention can reduce the personnel cost, and can provide a wide range of accurate traffic flow information, and the economic benefits are very obvious.

3. The present invention utilizes a geographic information system to assist image analysis to improve processing performance.

The detailed description of the preferred embodiments of the present invention is intended to be limited to the scope of the invention, and is not intended to limit the scope of the invention. The patent scope of this case.

To sum up, this case is not only innovative in terms of technical thinking, but also able to enhance the above-mentioned multiple functions compared with conventional articles. It should fully comply with the statutory invention patent requirements of novelty and progressiveness, and apply in accordance with the law. I urge you to approve this article. Invention patent application, in order to invent invention, to the sense of virtue.

1‧‧‧ aerial photographing device

11‧‧‧Coordinate positioning module

2‧‧‧Wireless communication system

3‧‧‧ Traffic Flow Analysis System

31‧‧‧Geographic Information Module

32‧‧‧Image Analysis Module

33‧‧‧Database

1 is a structural diagram of a traffic information analysis system and method using a geographic information module and an aerial image; FIG. 2 is a function of a traffic information analysis system and method using a geographic information module and an aerial image according to the present invention; FIG. 3 is a flow chart of a first step of utilizing a geographic information module and an aerial image according to the present invention; FIG. 4 is a flow chart of a second step of utilizing a geographic information module and an aerial image according to the present invention; The present invention is a flowchart of a third step of utilizing a geographic information module and an aerial photograph; FIG. 6 is a flow chart of a fourth step of utilizing a geographic information module and an aerial photograph according to the present invention; The fifth step flow chart of the information module and the aerial picture; FIG. 8 is a flow chart of the sixth step of using the geographic information module and the aerial picture according to the present invention.

1. . . Air picture shooting device

2. . . Wireless communication system

3. . . Traffic flow analysis system

Claims (14)

A traffic information analysis system using a geographic information module and an aerial photograph, comprising: an aerial photographing device for photographing an aerial photograph of a region for obtaining traffic information; a standard positioning module, and an aerial photograph The picture capturing device is connected to capture the aerial picture and add the latitude and longitude information; a wireless communication system is connected with the aerial picture capturing device, and the taken aerial picture is transmitted back for traffic information analysis; The information module uses the coordinates carried in the aerial photograph to identify a specific area as a road area and corresponds to the road name; an image analysis module analyzes the image of the road area in the aerial photograph to obtain traffic information. A database for storing traffic information analyzed by the image analysis module to provide subsequent applications. For example, the traffic information analysis system using the geographic information module and the aerial image according to the first aspect of the patent application, wherein the aerial image capturing device can use the satellite shooting mode. For example, the traffic information analysis system using the geographic information module and the aerial image according to the first aspect of the patent application, wherein the aerial photography device can use the aerial photography mode. For example, the traffic information analysis system using the geographic information module and the aerial image according to the first aspect of the patent application, wherein the coordinate positioning module can use the global positioning system positioning method. For example, the traffic information analysis system using the geographic information module and the aerial image according to the first aspect of the patent application, wherein the wireless communication system can use the radio mode. The traffic information analysis system using the geographic information module and the aerial image as described in claim 1, wherein the geographic information module further includes pre-stored data of all road areas that need to obtain traffic information, such as forming a road. The latitude and longitude points of the area polygon, the line segment, and various attribute data of the road area. For example, the traffic information analysis system using the geographic information module and the aerial image according to the first aspect of the patent application, wherein the image analysis module further includes an image when there is no vehicle in each road section as a comparison bottom. Diagrams, as well as sample images of various types of vehicles, for identification. A traffic information analysis method using a geographic information module and an aerial photograph, comprising: a geographic information module to assist in identifying a road area to be tested in an aerial photograph; and estimating traffic flow by using a total area of the road occupied by the vehicle The steps of information; the step of estimating the speed of the feasible vehicle by using the traffic flow information; the step of monitoring the traffic accident by comparing the vehicle area of the same size in the same time in the aerial photograph of the continuous time; The steps of road damage monitoring in the non-vehicle area of the same size in the same area; the steps of integrating the traffic information obtained by the aerial maps of different areas. For example, the method for analyzing the traffic information using the geographic information module and the aerial image as described in claim 8 of the patent application, wherein the step of identifying the road area to be tested in the aerial image by the geographic information module may further include: Step 1: The geographic information module calculates an aerial photo with latitude and longitude coordinates data and all road regions to obtain a road region where the aerial image is intersected; Step 2: Convert the latitude and longitude coordinates of the road area intersecting with the aerial picture into the pixel coordinates in the aerial picture; Step 3: Use the pixel coordinates of the road area as the input data of the traffic information image analysis module. The method for analyzing traffic information using the geographic information module and the aerial image as described in claim 8 of the patent application, wherein the step of estimating traffic flow information by using the total area of the road occupied by the vehicle may further include: Step 1: Comparing the corresponding road area in the aerial image with the base image without the vehicle to obtain the image of the area of the non-base image; Step 2: Comparing the image of the area of the non-base image with the feature image of each type of vehicle To determine whether the image of the area of the non-base image is a vehicle; Step 3: Calculate the total area of the image area belonging to the vehicle and calculate the percentage of the road area; Step 4: Determine the table by the area ratio of the vehicle to determine The current traffic flow of the road. For example, the method for analyzing the traffic information using the geographic information module and the aerial photo according to the scope of claim 8 wherein the step of estimating the speed of the feasible vehicle by using the traffic flow information may further include: Step 1: Using the patent application scope The 9 steps are used to obtain the current traffic flow; Step 2: to check the current traffic flow to obtain the information of the feasible vehicle speed. For example, the traffic information analysis method using the geographic information module and the aerial photo map described in claim 8 of the patent application, wherein the traffic accident monitoring is performed by comparing the vehicle areas of the same size and the same area in the aerial photograph of the continuous time. The steps may further include: Step 1: the corresponding road area in the aerial photo and the basis of no vehicle The bottom image is compared to obtain an image of the non-base image; step 2: comparing the image of the non-base image with the feature image of each model to determine whether the image of the non-base image is a vehicle; Step 3: Record the location, size, and features of the image area belonging to the vehicle; Step 4: Compare the historical data of continuous time, whether there is a vehicle image area of the same position, size, and characteristics; Step 5: If continuous In the image of the vehicle in the same position, size and feature in the time, the traffic accident alarm is issued, and the monitoring personnel perform manual comparison to confirm whether it is a traffic accident event. For example, the method for analyzing traffic information using the geographic information module and the aerial photograph according to item 8 of the patent application scope, wherein the road damage is performed by comparing non-vehicle regions of the same size in the same time in the aerial photograph of the continuous time. The monitoring step may further include: Step 1: comparing the corresponding road area in the aerial photograph with the base image without the vehicle to obtain the area image of the non-base image; Step 2: image the area of the non-base image Comparing with the feature images of each type of vehicle to determine whether the image of the non-base image is a vehicle; Step 3: Recording the location, size, and features of the image area belonging to the non-vehicle; Step 4: Alignment Historical data of continuous time, whether there is a non-vehicle image area of the same position, size, and feature; Step 5: If the non-vehicle image area of the same position, size, and feature exists in the aerial picture of continuous time, the road is damaged. The alarm is manually checked by the monitoring personnel to confirm whether the road is damaged. Use of geographic information module and aerial photo as described in item 8 of the patent application scope The traffic information analysis method, wherein the step of integrating the traffic information obtained by the aerial photographs of different regions may further comprise: Step 1: temporarily storing the traffic information obtained by the aerial photographs of different regions in the database; 2. The traffic information data of different areas in the database but belonging to the same road are averaged for data integration.