A method and device for drawing a road traffic accident scene map

Abstract

The present application discloses a method and device for drawing a road traffic accident scene map, the method comprising: constructing a three-dimensional oblique real-scene model of a target accident scene based on oblique photography technology; using a preset measurement tool to measure the target size in the three-dimensional oblique real-scene model, and performing geometric analysis based on the target size to obtain the accident scene spatial parameters, the target size including distance, width, angle and radius; drawing the accident object in the three-dimensional oblique real-scene model according to the preset abstract graphic symbol to obtain the accident scene relationship map; mapping the accident scene spatial parameters to the three-dimensional oblique real-scene model and the accident scene relationship map respectively to obtain the corresponding on-site record map and on-site scale map. The present application solves the technical problems that the existing technology has large data deviation, low efficiency, and limitations, resulting in the lack of accuracy in the survey results and the inability to provide reliable reference files for accident analysis.

Description

Technical Field

[0001] The present application relates to the technical field of traffic accident investigation, and in particular to a method and device for drawing a road traffic accident scene map. Background Art

[0002] After a road traffic accident occurs, the accident scene cannot be preserved for a long time. Therefore, after the accident scene is handled, traffic must be restored quickly to avoid serious traffic jams. The traffic accident scene map can truly reflect the conditions of each element at the accident scene and is one of the indispensable documents in the handling and analysis of traffic accidents. At present, the accident handling departments in most parts of my country still use the method of drawing the scene map with a ruler. First, manual measurement is taken, and then the site scale map is manually drawn on the standard drawing. Some units have applied image-based measurement software and methods, that is, measurement and marking are carried out based on the two-dimensional image of the accident scene taken.

[0003] There are still some problems with the existing image rendering technology. For example, the scale of the scene map drawn by the ruler is seriously out of balance, the measured data lacks accuracy, and cannot well reflect the situation at the scene of the traffic accident. In addition, manual measurement is labor-intensive, inefficient, and has large errors. Moreover, the measurement angle based on two-dimensional images is limited, and the rendering has great limitations. This leads to poor actual accident survey results and cannot provide reliable reference documents for subsequent accident analysis. Summary of the invention

[0004] The present application provides a method and device for drawing a road traffic accident scene map, which is used to solve the technical problems that the existing technology has large data deviations, low efficiency, and limitations, resulting in inaccurate survey results and inability to provide reliable reference documents for accident analysis.

[0005] In view of this, the first aspect of the present application provides a method for drawing a road traffic accident scene map, comprising:

[0006] Construct a three-dimensional oblique real-scene model of the target accident scene based on oblique photography technology;

[0007] Using a preset measuring tool to measure the target size in the three-dimensional tilted real scene model, and performing geometric analysis based on the target size to obtain the accident scene spatial parameters, wherein the target size includes distance, width, angle and radius;

[0008] Draw the accident object in the three-dimensional tilted real scene model according to the preset abstract graphic symbols to obtain the accident scene relationship diagram;

[0009] The spatial parameters of the accident scene are respectively mapped to the three-dimensional tilted real-scene model and the accident scene relationship diagram to obtain corresponding on-site record diagrams and on-site proportional diagrams.

[0010] Preferably, the three-dimensional oblique real scene model of the target accident scene is constructed based on the oblique photography technology, including:

[0011] Obtain accident images at different locations of the target accident scene based on oblique photography technology;

[0012] Performing data analysis and processing on the accident image to obtain position information and posture data, wherein the data analysis and processing includes geometric correction, light uniformity and color uniformity;

[0013] After high-density point cloud data is generated according to the position information and the posture data, a three-dimensional inclined real scene model based on texture mapping is constructed through the high-density point cloud data.

[0014] Preferably, the method further comprises: measuring the target size in the three-dimensional tilted real scene model by using a preset measuring tool, and performing geometric analysis based on the target size to obtain the spatial parameters of the accident scene;

[0015] Rendering the three-dimensional tilted real scene model for visual display;

[0016] The displayed three-dimensional tilted real scene model is adjusted to a preset measurement viewing angle through rotation, scaling and translation operations.

[0017] Preferably, the step of drawing the accident object in the three-dimensional tilted real scene model according to the preset abstract graphic symbol to obtain the accident scene relationship diagram includes:

[0018] Selecting a preset fixed object in the three-dimensional tilted real scene model to draw a reference symbol, wherein the reference symbol includes a reference point and a reference line;

[0019] Based on the reference symbol, the accident object is drawn at the corresponding spatial position of the three-dimensional inclined real scene model using a preset abstract graphic symbol to obtain an accident scene relationship diagram.

[0020] Preferably, the spatial parameters of the accident scene are respectively mapped to the three-dimensional tilted real scene model and the accident scene relationship diagram to obtain corresponding on-site record diagram and on-site scale diagram, and then further includes:

[0021] Conduct accident analysis and damage assessment analysis based on the on-site record diagram and the on-site proportional diagram to obtain analysis results.

[0022] A second aspect of the present application provides a device for drawing a road traffic accident scene map, comprising:

[0023] A three-dimensional construction module, used to construct a three-dimensional oblique real-scene model of the target accident scene based on oblique photography technology;

[0024] A data measurement module, used to measure the target size in the three-dimensional tilted real scene model using a preset measurement tool, and perform geometric analysis based on the target size to obtain the spatial parameters of the accident scene, wherein the target size includes distance, width, angle and radius;

[0025] An image drawing module, used for drawing the accident object in the three-dimensional tilted real scene model according to preset abstract graphic symbols to obtain an accident scene relationship diagram;

[0026] The data mapping module is used to map the spatial parameters of the accident scene to the three-dimensional tilted real-scene model and the accident scene relationship diagram respectively, so as to obtain a corresponding on-site record diagram and an on-site proportional diagram.

[0027] Preferably, the three-dimensional building module comprises:

[0028] An image acquisition submodule is used to acquire accident images of different directions of the target accident scene based on oblique photography technology;

[0029] A data analysis submodule is used to perform data analysis on the accident image to obtain position information and posture data, wherein the data analysis includes geometric correction, light uniformity and color uniformity;

[0030] The model building submodule is used to generate high-density point cloud data according to the position information and the posture data, and then build a three-dimensional inclined real scene model based on texture mapping through the high-density point cloud data.

[0031] Preferably, it also includes:

[0032] A model display module, used for rendering the three-dimensional tilted real scene model for visual display;

[0033] The angle adjustment module is used to adjust the displayed three-dimensional inclined real scene model to a preset measurement viewing angle through rotation, scaling and translation operations.

[0034] Preferably, the image drawing module comprises:

[0035] A reference selection submodule, used for selecting a preset fixed object in the three-dimensional tilted real scene model to draw a reference symbol, wherein the reference symbol includes a reference point and a reference line;

[0036] The object drawing submodule is used to draw the accident object at the corresponding spatial position of the three-dimensional inclined real scene model based on the reference symbol using a preset abstract graphic symbol to obtain an accident scene relationship diagram.

[0037] Preferably, it also includes:

[0038] The accident analysis module is used to perform accident analysis and damage assessment analysis based on the on-site record diagram and the on-site proportional diagram to obtain analysis results.

[0039] It can be seen from the above technical solutions that the embodiments of the present application have the following advantages:

[0040] In the present application, a method for drawing a road traffic accident scene map is provided, including: constructing a three-dimensional oblique real-scene model of the target accident scene based on oblique photography technology; using a preset measurement tool to measure the target size in the three-dimensional oblique real-scene model, and performing geometric analysis based on the target size to obtain the accident scene spatial parameters, the target size including distance, width, angle and radius; drawing the accident object in the three-dimensional oblique real-scene model according to preset abstract graphic symbols to obtain an accident scene relationship map; mapping the accident scene spatial parameters to the three-dimensional oblique real-scene model and the accident scene relationship map respectively to obtain a corresponding scene record map and a scene scale map.

[0041] The method for drawing a road traffic accident scene map provided by the present application can restore the accident scene more accurately by constructing an inclined three-dimensional real-scene model, ensure the information capture from all angles in multiple directions, and overcome the limitations of two-dimensional image drawing; the three-dimensional inclined real-scene model carries coordinate information, so the measurement operation is performed on the three-dimensional inclined real-scene model using a measuring tool to ensure data accuracy; the accident objects at the accident scene can be described according to preset abstract graphic symbols to quickly generate a relationship diagram of the accident scene, which can not only improve the efficiency of drawing, but also ensure the reliability of data. Therefore, the present application can solve the technical problems of the existing technology that the data deviation is large, the efficiency is low, and there are limitations, resulting in the lack of accuracy of the survey results and the inability to provide reliable reference files for accident analysis. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 A schematic flow chart of a method for drawing a road traffic accident scene map provided in an embodiment of the present application;

[0043] Figure 2 Another schematic diagram of a flow chart of a method for drawing a road traffic accident scene map provided in an embodiment of the present application;

[0044] Figure 3 A schematic structural diagram of a device for drawing a road traffic accident scene map provided in an embodiment of the present application. DETAILED DESCRIPTION

[0045] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0046] For easier understanding, see Figure 1 , Embodiment 1 of a method for drawing a road traffic accident scene map provided by the present application includes:

[0047] Step 101: construct a three-dimensional oblique real-scene model of the target accident scene based on oblique photography technology.

[0048] Oblique photography uses multiple sensors on the same flying platform to simultaneously collect images from five different angles, including one vertical angle, four oblique angles, etc. The main features are: it can reflect the real situation around the ground object, realize single image measurement, can collect the side texture of the object, and has a small amount of data. Based on the multi-directional images obtained, a three-dimensional oblique real scene model of the accident scene can be constructed. The three-dimensional oblique real scene model in this embodiment is in the format of OBJ or OSGB.

[0049] Step 102: Use a preset measurement tool to measure the target size in the three-dimensional tilted real-scene model, and perform geometric analysis based on the target size to obtain the accident scene spatial parameters. The target size includes distance, width, angle and radius.

[0050] The three-dimensional tilted real-life model has coordinates, so the measuring tool can directly measure the precise target size, such as the key size of the car, people, and road at the accident scene, as well as the distance between objects and people, the distance between objects, angles and other information, so that the data can accurately control the spatial distribution of the accident scene. In addition, key data information that cannot be directly measured can be obtained through geometric analysis and calculation, thus forming the spatial parameters of the accident scene.

[0051] Step 103: Draw the accident object in the three-dimensional tilted real-scene model according to the preset abstract graphic symbol to obtain the accident scene relationship diagram.

[0052] Presetting abstract graphic symbols can speed up the image drawing process. They are mainly used to describe specific accident objects, such as accident vehicles, people, scattered objects and other important information. A set of symbols can be preset to facilitate image drawing; as long as the abstract graphic symbols corresponding to each accident object are different and recognizable, the specific settings can be specified according to the actual situation. For example, a rectangular frame can be used to represent a vehicle, and a combination of circles and line segments can be used to describe a person, which is concise and clear. The accident scene relationship diagram is drawn on the basis of a three-dimensional tilted real scene model. After drawing, it can be exported to form a specific image file for use in survey and analysis.

[0053] Step 104 , mapping the accident scene spatial parameters to the three-dimensional tilted real scene model and the accident scene relationship diagram respectively, to obtain the corresponding scene record diagram and scene scale diagram.

[0054] In order to make the pictures and data of the accident scene more intuitive to the staff and provide more convenient reference information, the spatial parameters of the accident scene obtained by measurement and analysis are mapped to the three-dimensional tilted real-life model and the accident scene relationship diagram. The resulting on-site record map and on-site scale map can not only show the spatial distribution of each target object in the accident, but also provide specific data information, which can improve the reliability of the surveyor's analysis.

[0055] The method for drawing a road traffic accident scene map provided by the embodiment of the present application can restore the accident scene more accurately by constructing an inclined three-dimensional real-scene model, ensure the information capture from all angles in multiple directions, and overcome the limitations of two-dimensional image drawing; the three-dimensional inclined real-scene model carries coordinate information, so the measurement operation is performed on the three-dimensional inclined real-scene model using a measuring tool to ensure data accuracy; the accident objects at the accident scene can be described according to the preset abstract graphic symbols to quickly generate a relationship diagram of the accident scene, which can not only improve the efficiency of drawing, but also ensure the reliability of data. Therefore, the embodiment of the present application can solve the technical problems of the existing technology that the data deviation is large, the efficiency is low, and there are limitations, resulting in the lack of accuracy of the survey results and the inability to provide reliable reference files for accident analysis.

[0056] For easier understanding, see Figure 2 The present application provides a second embodiment of a method for drawing a road traffic accident scene map, comprising:

[0057] Step 201: Acquire accident images of different directions of the target accident scene based on oblique photography technology.

[0058] Drones equipped with oblique photography technology can be used to capture images from different directions at the accident scene to obtain multiple accident images for basic screening, but at least one accident image must be retained from each shooting direction.

[0059] Step 202: Perform data analysis and processing on the accident image to obtain position information and posture data. The data analysis and processing includes geometric correction, light uniformity, and color uniformity.

[0060] In addition to geometric correction, light uniformity and color uniformity, data analysis and processing also include operations such as synonymous point matching and regional network joint adjustment. The specific operations can be referred to the existing technology and will not be described in detail here.

[0061] Step 203: After generating high-density point cloud data according to the position information and the posture data, a three-dimensional tilted real scene model based on texture mapping is constructed through the high-density point cloud data.

[0062] The high-density point cloud data generated based on the position information and posture data can construct a TIN (irregular triangulated network) model, and then construct a three-dimensional tilted model through texture mapping. The model has coordinate information and texture information; the format is OBJ or OSGB.

[0063] Step 204: Render the three-dimensional tilted real scene model for visual display.

[0064] Step 205: adjust the displayed three-dimensional tilted real scene model to a preset measurement viewing angle through rotation, scaling and translation operations.

[0065] Visual display and angle adjustment operations are preparations for subsequent measurements, which facilitate accurate measurement. The preset measurement angle is set according to the actual situation and is not limited here.

[0066] Step 206: Use a preset measurement tool to measure the target size in the three-dimensional tilted real-scene model, and perform geometric analysis based on the target size to obtain the accident scene spatial parameters. The target size includes distance, width, angle and radius.

[0067] Different size information may require different measurement tools, so there may be multiple preset measurement tools, such as using an automatic measurement tool to measure the distance of road lines, a road width measurement tool to measure the width of a road, a distance measurement tool to measure the distance between two accident objects, an angle measurement tool to measure the angle between objects, and a curve radius measurement tool to measure the radius of a road curve, etc. If there are other measurement needs, other measurement tools may be added, such as slope measurement, etc.

[0068] The geometric analysis of target size is mainly the process of calculating data such as the distance, angle and width between accident objects. Finally, the target size and the calculated data information together constitute the spatial parameters of the accident scene, which are used to quantitatively describe the accident scene.

[0069] Step 207: Select a preset fixed object in the three-dimensional tilted real scene model to draw a reference symbol, where the reference symbol includes a reference point and a reference line.

[0070] The reference symbols are generally selected as fixed objects, so the preset fixed objects have a certain degree of versatility and can also be selected according to actual conditions. The reference points in the preset fixed objects of this embodiment include street lights and traffic lights; the reference lines include road edges or road markings, and extension lines.

[0071] Step 208: Based on the reference symbol, the accident object is drawn at the corresponding spatial position of the three-dimensional tilted real scene model using a preset abstract graphic symbol to obtain an accident scene relationship diagram.

[0072] Using the benchmark points and benchmark lines as reference standards, we began to depict accident objects in the three-dimensional tilted real-scene model, mainly including motor vehicles, non-motor vehicles, people, livestock, scattered objects, etc. Each object can be expressed using different preset abstract graphic symbols, which is concise, clear and fast. In addition to these main accident objects, there is also some main traffic information in the scene, such as zebras, roads, safety facilities and other on-site elements.

[0073] In addition to ensuring the accuracy of the accident object expression, the main purpose of depicting the accident object on the three-dimensional inclined real-scene model is to express the spatial distribution characteristics between the accident objects and provide important reference information.

[0074] Step 209: Map the accident scene spatial parameters to the three-dimensional tilted real scene model and the accident scene relationship diagram respectively to obtain the corresponding scene record diagram and scene scale diagram.

[0075] The three-dimensional tilted real-scene model and the accident scene relationship diagram can only describe the relationship between the accident objects perceptually, while the accident scene spatial parameters can quantitatively describe the spatial position relationship between objects, which is more accurate and reliable. Therefore, it is necessary to map the parameters to the two scene diagrams to provide richer accident scene information. In addition to adding parameter information to the diagram, specific orientation information such as east, south, west, and north are generally recorded based on the model projection coordinate information; in addition, some information about the time of the accident scene, the weather at the scene, the location of the accident, and the nature of the road surface will also be added. In addition, the corresponding drawing instructions, drawing time, and person in charge need to be supplemented in the end. All this information is used to improve the accident scene image, making it a more reliable and rigorous on-site survey map, providing more reliable accident information to the staff.

[0076] Step 210: Perform accident analysis and damage assessment analysis based on the on-site record diagram and the on-site scale diagram to obtain analysis results.

[0077] The method for drawing a road traffic accident scene map provided by the embodiment of the present application can restore the accident scene more accurately by constructing an inclined three-dimensional real-scene model, ensure the information capture from all angles in multiple directions, and overcome the limitations of two-dimensional image drawing; the three-dimensional inclined real-scene model carries coordinate information, so the measurement operation is performed on the three-dimensional inclined real-scene model using a measuring tool to ensure data accuracy; the accident objects at the accident scene can be described according to the preset abstract graphic symbols to quickly generate a relationship diagram of the accident scene, which can not only improve the efficiency of drawing, but also ensure the reliability of data. Therefore, the embodiment of the present application can solve the technical problems of the existing technology that the data deviation is large, the efficiency is low, and there are limitations, resulting in the lack of accuracy of the survey results and the inability to provide reliable reference files for accident analysis.

[0078] For easier understanding, see Figure 3 The present application also provides an embodiment of a device for drawing a road traffic accident scene map, comprising:

[0079] A three-dimensional construction module 301 is used to construct a three-dimensional oblique real scene model of the target accident scene based on oblique photography technology;

[0080] The data measurement module 302 is used to measure the target size in the three-dimensional tilted real scene model using a preset measurement tool, and perform geometric analysis based on the target size to obtain the accident scene spatial parameters, where the target size includes distance, width, angle and radius;

[0081] An image drawing module 303 is used to draw the accident object in the three-dimensional tilted real scene model according to the preset abstract graphic symbols to obtain the accident scene relationship diagram;

[0082] The data mapping module 304 is used to map the spatial parameters of the accident scene to the three-dimensional tilted real scene model and the accident scene relationship diagram, so as to obtain the corresponding scene record diagram and the scene scale diagram.

[0083] Furthermore, the three-dimensional construction module 301 includes:

[0084] The image acquisition submodule 3011 is used to acquire accident images of different positions of the target accident scene based on the oblique photography technology;

[0085] The data analysis submodule 3012 is used to perform data analysis on the accident image to obtain position information and posture data. The data analysis includes geometric correction, light uniformity and color uniformity.

[0086] The model building submodule 3013 is used to generate high-density point cloud data according to the position information and the posture data, and then build a three-dimensional tilted real scene model based on texture mapping through the high-density point cloud data.

[0087] Furthermore, it also includes:

[0088] The model display module 305 is used to render the three-dimensional tilted real scene model for visual display;

[0089] The angle adjustment module 306 is used to adjust the displayed three-dimensional tilted real scene model to a preset measurement viewing angle through rotation, scaling and translation operations.

[0090] Furthermore, the image drawing module 303 includes:

[0091] The reference selection submodule 3031 is used to select a preset fixed object in the three-dimensional tilted real scene model to draw a reference symbol, and the reference symbol includes a reference point and a reference line;

[0092] The object drawing submodule 3032 is used to draw the accident object at the corresponding spatial position of the three-dimensional tilted real scene model based on the reference symbol and using the preset abstract graphic symbol to obtain the accident scene relationship diagram.

[0093] Furthermore, it also includes:

[0094] The accident analysis module 307 is used to perform accident analysis and damage assessment analysis based on the on-site record diagram and the on-site proportional diagram to obtain analysis results.

[0095] In the several embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0096] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0097] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0098] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for executing all or part of the steps of the method described in each embodiment of the present application through a computer device (which can be a personal computer, a server, or a network device, etc.). The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (full name in English: Read-Only Memory, English abbreviation: ROM), random access memory (full name in English: Random Access Memory, English abbreviation: RAM), disk or optical disk and other media that can store program codes.

[0099] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A method for drawing a road traffic accident scene map, characterized in that: include: A three-dimensional oblique real-scene model of the target accident scene is constructed based on oblique photography technology. The modeling process is as follows: Obtain accident images at different locations of the target accident scene based on oblique photography technology; Performing data analysis and processing on the accident image to obtain position information and posture data, wherein the data analysis and processing includes geometric correction, light uniformity and color uniformity; After generating high-density point cloud data according to the position information and the posture data, constructing a three-dimensional tilted real scene model based on texture mapping through the high-density point cloud data; Using a preset measuring tool to measure the target size in the three-dimensional tilted real scene model, and performing geometric analysis based on the target size to obtain the accident scene spatial parameters, wherein the target size includes distance, width, angle and radius; The accident object is drawn in the three-dimensional tilted real scene model according to the preset abstract graphic symbol to obtain the accident scene relationship diagram. The drawing process is as follows: Selecting a preset fixed object in the three-dimensional tilted real scene model to draw a reference symbol, wherein the reference symbol includes a reference point and a reference line; Based on the reference symbol, the accident object is drawn at the corresponding spatial position of the three-dimensional tilted real scene model using a preset abstract graphic symbol to obtain an accident scene relationship diagram; The spatial parameters of the accident scene are respectively mapped to the three-dimensional tilted real-scene model and the accident scene relationship diagram to obtain corresponding on-site record diagrams and on-site proportional diagrams.

2. The method for drawing a road traffic accident scene map according to claim 1, characterized in that: The method of measuring the target size in the three-dimensional tilted real scene model by using a preset measuring tool and performing geometric analysis based on the target size to obtain the spatial parameters of the accident scene also includes: Rendering the three-dimensional tilted real scene model for visual display; The displayed three-dimensional tilted real scene model is adjusted to a preset measurement viewing angle through rotation, scaling and translation operations.

3. The method for drawing a road traffic accident scene map according to claim 1, characterized in that: The spatial parameters of the accident scene are respectively mapped to the three-dimensional tilted real scene model and the accident scene relationship diagram to obtain a corresponding on-site record diagram and an on-site proportional diagram, and then further includes: Conduct accident analysis and damage assessment analysis based on the on-site record diagram and the on-site proportional diagram to obtain analysis results.

4. A device for drawing a road traffic accident scene map, characterized in that: include: A three-dimensional construction module is used to construct a three-dimensional oblique real scene model of the target accident scene based on the oblique photography technology, and the three-dimensional construction module includes: An image acquisition submodule is used to acquire accident images of different directions of the target accident scene based on oblique photography technology; A data analysis submodule is used to perform data analysis on the accident image to obtain position information and posture data, wherein the data analysis includes geometric correction, light uniformity and color uniformity; A model building submodule, for generating high-density point cloud data according to the position information and the posture data, and then building a three-dimensional tilted real scene model based on texture mapping through the high-density point cloud data; A data measurement module, used to measure the target size in the three-dimensional tilted real scene model using a preset measurement tool, and perform geometric analysis based on the target size to obtain the spatial parameters of the accident scene, wherein the target size includes distance, width, angle and radius; An image drawing module is used to draw the accident object in the three-dimensional tilted real scene model according to the preset abstract graphic symbols to obtain the accident scene relationship diagram, and the image drawing module includes: A reference selection submodule, used for selecting a preset fixed object in the three-dimensional tilted real scene model to draw a reference symbol, wherein the reference symbol includes a reference point and a reference line; An object drawing submodule, for drawing the accident object at the corresponding spatial position of the three-dimensional tilted real scene model using a preset abstract graphic symbol based on the reference symbol to obtain an accident scene relationship diagram; The data mapping module is used to map the spatial parameters of the accident scene to the three-dimensional tilted real-scene model and the accident scene relationship diagram respectively, so as to obtain a corresponding on-site record diagram and an on-site proportional diagram.

5. The device for drawing a road traffic accident scene map according to claim 4, characterized in that: Also includes: A model display module, used for rendering the three-dimensional tilted real scene model for visual display; The angle adjustment module is used to adjust the displayed three-dimensional inclined real scene model to a preset measurement viewing angle through rotation, scaling and translation operations.

6. The device for drawing a road traffic accident scene map according to claim 4, characterized in that: Also includes: The accident analysis module is used to perform accident analysis and damage assessment analysis based on the on-site record diagram and the on-site proportional diagram to obtain analysis results.

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