An infrared scene simulation system and method

Abstract

An embodiment of the present invention relates to an infrared scene simulation system and method. The system includes a model construction module for constructing a model to be simulated, where the model to be simulated includes a background model and a target model; a scene construction module for setting the positions and movement trajectories of the background model and the target model to form a preset visible light scene and setting scene parameters of the visible light scene; an atmosphere calculation module for calculating the atmospheric transmission transmittance, the background and surface scattering radiation intensity, and the direct solar irradiance under the scene parameters; a thermal feature solving module for calculating the temperature fields of the background model and the target model; an infrared characteristic calculation module for calculating a first infrared radiance image of the visible light scene based on the temperature fields and simulation parameters; and a sensor effect calculation module for introducing sensor effects to the first infrared radiance image based on sensor parameters to generate a final infrared simulation image. This system can obtain infrared images under any scene with high imaging efficiency.

Description

Technical Field

[0001] The embodiments of the present invention relate to the field of optoelectronic imaging technology, and particularly to an infrared scene simulation system and method. Background Art

[0002] In nature, all objects can radiate infrared rays, and the imaging process does not require active illumination. Therefore, infrared images have extremely high reference value.

[0003] In related technologies, infrared images are usually obtained by relying on infrared detectors in the field. However, this method not only consumes a large amount of manpower, material resources and financial resources, but also it is very difficult to obtain infrared images of targets in complex environments and bad climates, and the imaging efficiency is low.

[0004] Therefore, there is an urgent need for an infrared scene simulation system and method to solve the above technical problems. Summary of the Invention

[0005] The embodiments of the present invention provide an infrared scene simulation system and method, which can obtain infrared images under any scene and have high imaging efficiency.

[0006] In a first aspect, the embodiments of the present invention provide an infrared scene simulation system, including:

[0007] A model construction module, configured to construct a model to be simulated, where the model to be simulated includes a background model and a target model;

[0008] A scene construction module, configured to set the positions and movement trajectories of the background model and the target model to form a preset visible light scene, and set scene parameters of the visible light scene, where the scene parameters include environmental parameters, simulation parameters, and camera and sensor parameters;

[0009] An atmosphere calculation module, configured to calculate the atmospheric transmission transmittance, the background and surface scattering radiation intensity, and the solar direct irradiance under the scene parameters;

[0010] A thermal feature solving module, configured to calculate the temperature fields of the background model and the target model based on the calculation results of the atmosphere calculation module;

[0011] An infrared characteristic calculation module, configured to calculate a first infrared radiance image of the visible light scene based on the temperature fields and the simulation parameters;

[0012] A sensor effect calculation module, configured to introduce a sensor effect into the first infrared radiance image based on the sensor parameters to generate a final infrared simulation image.

[0013] In a possible design, it further includes a database, where the database includes a model library, a material library, and an atmospheric environment mode library; wherein,

[0014] The model library includes different target models and background models;

[0015] The material library includes parameters of different types of materials;

[0016] The atmospheric environment mode library includes environmental parameters of different atmospheric environment modes, and the environmental parameters include the temperature, humidity, and aerosol concentration of the atmosphere.

[0017] In a possible design, the model construction module is further configured to import the target model and the background model to be simulated from the model library, and add materials to the target model and the background model to obtain a target model and a background model containing material information, and the materials are obtained from the material library.

[0018] In a possible design, the target model and the background model containing material information can be stored in the model library to update the model library.

[0019] In a possible design, the scene construction module is further configured to call the environmental parameters in the atmospheric environment mode library.

[0020] In a possible design, it further includes a parameter interface, and the parameter interface is used to connect to an external plugin to expand the functions of the simulation system.

[0021] In a possible design, the calculation results of the model construction module, the scene construction module, the atmospheric calculation module, the thermal characteristic solving module, the infrared characteristic calculation module, and the sensor effect calculation module can be stored and output separately.

[0022] In a second aspect, an embodiment of the present invention further provides an infrared scene simulation method, which is applied to the simulation system in any of the above designs, and the method includes:

[0023] Construct a background model and a target model to be simulated, and edit the materials of the background model and the target model;

[0024] Set the positions and movement trajectories of the background model and the target model to form a preset visible light scene, and set the scene parameters of the visible light scene, where the scene parameters include environmental parameters, simulation parameters, and camera and sensor parameters;

[0025] Calculate the atmospheric transmission transmittance, background and surface scattering radiation intensity, and direct solar irradiance under the scene parameters;

[0026] Calculate the temperature fields of the background model and the target model;

[0027] Calculate a first infrared radiance image of the visible light scene based on the temperature field and the simulation parameters;

[0028] Introduce sensor effects to the first infrared radiance image based on the sensor parameters to generate a final infrared simulation image.

[0029] This application provides an infrared scene simulation system, including a model construction module, a scene construction module, an atmosphere calculation module, a thermal feature solving module, an infrared characteristic calculation module, and a sensor effect calculation module. This simulation system is an infrared scene simulation software. When an infrared image of a certain scene is required, only a visible light scene composed of a target model and a background model needs to be constructed, and then for the constructed visible light scene, atmosphere calculation, thermal feature solving, infrared characteristic calculation, and calculation result correction are carried out to obtain an infrared simulation image, without the need for on-site detection. Therefore, this simulation system is not affected by complex environments and harsh climates, can obtain infrared images of any scene, and has high imaging efficiency. Brief Description of the Drawings

[0030] To more clearly illustrate the technical solutions in the embodiments of the present invention or in the prior art, the following will briefly introduce the accompanying drawings required for the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other accompanying drawings can be obtained based on these drawings without creative efforts.

[0031] Figure 1 It is a schematic diagram of an infrared scene simulation system provided by an embodiment of the present invention;

[0032] Figure 2 It is a schematic diagram of an infrared scene simulation system provided by another embodiment of the present invention;

[0033] Figure 3 It is a schematic flowchart of an infrared scene simulation method provided by an embodiment of the present invention;

[0034] Figure 4 It is a visible light scene inside a certain power plant constructed by using this simulation system provided by an embodiment of the present invention;

[0035] Figure 5 It is provided by an embodiment of the present invention for Figure 3 The infrared image obtained by simulating and calculating the shown visible light scene.

[0036] Reference Signs:

[0037] 1 - Model Construction Module;

[0038] 2 - Scene Construction Module;

[0039] 3 - Atmospheric calculation module;

[0040] 4 - Thermal feature solving module;

[0041] 5 - Infrared characteristic calculation module;

[0042] 6 - Sensor effect calculation module;

[0043] 7 - Database. Detailed implementation manner

[0044] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0045] As Figure 1 shown, the embodiments of the present invention provide an infrared scene simulation system, and the system includes:

[0046] Model construction module 1, configured to construct a model to be simulated, and the model to be simulated includes a background model and a target model;

[0047] Scene construction module 2, configured to set the positions and movement trajectories of the background model and the target model to form a preset visible light scene, and set the scene parameters of the visible light scene, where the scene parameters include environmental parameters, simulation parameters, and camera and sensor parameters;

[0048] Atmospheric calculation module 3, configured to calculate the atmospheric transmission transmittance, background and surface scattering radiation intensity, and direct solar irradiance under the scene parameters;

[0049] Thermal feature solving module 4, configured to calculate the temperature fields of the background model and the target model based on the calculation results of the atmospheric calculation module 3;

[0050] Infrared characteristic calculation module 5, configured to calculate the first infrared radiance image of the visible light scene based on the temperature field and the simulation parameters;

[0051] Sensor effect calculation module 6, configured to introduce sensor effects to the first infrared radiance image based on the sensor parameters to generate a final infrared simulation image.

[0052] This embodiment provides an infrared scene simulation system, including a model construction module 1, a scene construction module 2, an atmosphere calculation module 3, a thermal feature solving module 4, an infrared characteristic calculation module 5, and a sensor effect calculation module 6. This simulation system is infrared scene simulation software. When an infrared image of a certain scene is required, only a visible light scene composed of a target model and a background model needs to be constructed, and then for the constructed visible light scene, atmosphere calculation, thermal feature solving, infrared characteristic calculation, and calculation result correction are performed, and the infrared simulation image of this visible light scene can be obtained without field detection. Therefore, this simulation system is not affected by complex environments and harsh climates, can obtain infrared images of any scene, and has high imaging efficiency.

[0053] In this embodiment, the background model can be a terrain model, a sky model, or an ocean model, and the target model can be a vehicle, a building, a ship, an aircraft, etc. The target model can be one or more, and can be of the same type or different types. In addition, the environmental parameters include parameters such as temperature, humidity, wind speed, and aerosol concentration in different regions, seasons, times, and weathers, the simulation parameters include simulation accuracy and shadows, etc., the camera parameters include position, angle, field of view, and near and far cross-sections, etc., and the sensor parameters include resolution, band, spectral responsivity, and response time, etc.

[0054] It should be noted that introducing sensor effects into the first infrared radiance image is based on convolution, geometric, and optical transfer functions, introducing noise and aberrations into the first infrared radiance image, and changing its saturation and distortion, etc., so that the obtained infrared simulation image is closer to the infrared image detected by a real camera.

[0055] As Figure 2 shown, in some embodiments, it further includes a database 7, and the database 7 includes a model library, a material library, and an atmospheric environment mode library; wherein,

[0056] The model library includes different target models and background models;

[0057] The material library includes parameters of different types of materials;

[0058] The atmospheric environment mode library includes environmental parameters of different atmospheric environment modes, and the environmental parameters include the temperature, humidity, and aerosol concentration of the atmosphere.

[0059] Based on this database 7, when constructing a simulation scene, the corresponding data can be directly imported from the database 7, improving the efficiency of the simulation.

[0060] In some embodiments, the model construction module 1 is further configured to import the target model and the background model to be simulated from the model library, and add materials to the target model and the background model to obtain the target model and the background model containing material information, and the materials are obtained from the material library.

[0061] In this embodiment, when it is necessary to construct a target model or a background model, it is possible to first check whether there is a corresponding model in the model library. If there is, the corresponding model is directly imported into the model construction module 1. If the material in the model does not meet the actual requirements, the corresponding material is retrieved from the material library and added to the corresponding parts of each model. In addition, the models in the model library include white models and models with material textures, and the materials include cement, steel, glass, etc.

[0062] In some embodiments, the target model and the background model containing material information can be stored in the model library to update the model library, and the updated model library can be used for the next simulation calculation.

[0063] In some embodiments, the scene construction module 2 is further configured to call the environmental parameters in the atmospheric environment mode library. When there are no parameters that meet the requirements in the atmospheric environment mode library, the environmental parameters can also be customized and the defined parameters are updated to the atmospheric environment mode library.

[0064] In some embodiments, it further includes a parameter interface, which is used to connect to external plugins to expand the functions of the simulation system. For example, plugins with specific functions can be customized and added as needed to build a system function toolbox to meet the needs of different customers.

[0065] In some embodiments, the calculation results of the model construction module 1, the scene construction module 2, the atmospheric calculation module 3, the thermal feature solving module 4, the infrared characteristic calculation module 5, and the sensor effect calculation module 6 can be stored and output separately, so that each module can be used separately and the output can provide result files for other calculation needs.

[0066] In some embodiments, the hardware of the simulation system is composed of a computing operating system with a domestically self-developed CPU, operating system, and storage medium.

[0067] As Figure 3 shown, the embodiment of the present invention provides an infrared scene simulation method, which is applied to the infrared scene simulation system in any of the above embodiments. The method includes:

[0068] Step 300, construct a background model and a target model to be simulated, and edit the materials of the background model and the target model;

[0069] Step 302, set the positions and movement trajectories of the background model and the target model to form a preset visible light scene, and set the scene parameters of the visible light scene. The scene parameters include environmental parameters, simulation parameters, and camera and sensor parameters;

[0070] Step 304, calculate the atmospheric transmission transmittance, background and surface scattering radiation intensity, and direct solar irradiance under the scene parameters;

[0071] Step 306, calculate the temperature fields of the background model and the target model;

[0072] Step 308, calculate the first infrared radiance image of the visible light scene based on the temperature fields and the simulation parameters;

[0073] Step 310, introduce the sensor effect to the first infrared radiance image based on the sensor parameters to generate the final infrared simulation image.

[0074] The following uses a specific embodiment to illustrate the effects of the simulation system and method of the present invention:

[0075] As Figure 4 shown, it is a visible light scene inside a certain power plant constructed by using the infrared simulation system of the present invention. It can be seen from the figure that the visible light scene includes terrain, vehicles, factory buildings, cooling towers, etc.

[0076] Therefore, when constructing the visible light simulation scene, first import the terrain model of the power plant and the target models such as vehicles, factory buildings, and cooling towers based on the model construction module 1, and edit and add materials to the corresponding components of each model. The materials are obtained from the material library;

[0077] Then, according to the user's needs, adjust the positions of each model and the environmental parameters, simulation parameters, camera and sensor parameters based on the scene construction module 2 to complete the construction of the visible light scene.

[0078] After the visible light scene is constructed, the atmospheric transmittance, scattered radiation intensity, and direct solar irradiance files can be generated based on the atmospheric calculation module 3;

[0079] Then calculate and generate the temperature field files of the above-mentioned models based on the thermal feature solving module 4;

[0080] Then calculate the first infrared radiance image of the above-mentioned visible light scene based on the infrared characteristic calculation module 5, and generate a visible light scene display window;

[0081] Finally, based on the sensor effect calculation module 6, introduce the sensor effect to the above-mentioned first infrared radiance image, obtain the final infrared image and display it through the display window, as Figure 5 shown.

[0082] From Figure 4 and Figure 5 it can be seen that by using the simulation system of the present invention, a clear infrared effect image of the constructed visible light scene can be obtained.

[0083] In addition, by using the system of the present application, as long as the positions and trajectories of each model, simulation parameters, environmental parameters, camera and sensor parameters are adjusted, the infrared radiation characteristics of a specific scene at any time period and in any atmospheric environment can be obtained and displayed in real time dynamically.

[0084] It can be understood that the infrared scene simulation system provided in this embodiment and the infrared scene simulation method provided in the above embodiment have the same beneficial effects, which will not be elaborated here.

[0085] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the element.

[0086] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An infrared scene simulation system, characterized in that, Including: A model construction module (1) for constructing a model to be simulated, where the model to be simulated includes a background model and a target model; A scene construction module (2) for setting the positions and movement trajectories of the background model and the target model to form a preset visible light scene, and setting scene parameters of the visible light scene, where the scene parameters include environmental parameters, simulation parameters, and camera and sensor parameters; An atmosphere calculation module (3) for calculating the atmospheric transmission transmittance, background and surface scattered radiation intensity, and direct solar irradiance under the scene parameters; A thermal feature solving module (4) for calculating the temperature fields of the background model and the target model based on the calculation results of the atmosphere calculation module (3); An infrared characteristic calculation module (5) for calculating a first infrared radiance image of the visible light scene based on the temperature field and the simulation parameters; A sensor effect calculation module (6) for introducing a sensor effect to the first infrared radiance image based on the sensor parameters to generate a final infrared simulation image.

2. The simulation system according to claim 1, characterized in that It further includes a database (7), where the database (7) includes a model library, a material library, and an atmospheric environment mode library; among them, The model library includes different target models and background models; The material library includes parameters of different types of materials; The atmospheric environment mode library includes environmental parameters of different atmospheric environment modes, and the environmental parameters include the temperature, humidity, and aerosol concentration of the atmosphere.

3. The simulation system according to claim 2, wherein The model construction module (1) is further configured to import the target model and the background model to be simulated from the model library, and add materials to the target model and the background model to obtain a target model and a background model containing material information, where the materials are obtained from the material library.

4. The simulation system according to claim 3, characterized in that, The target model and the background model containing material information can be stored in the model library to update the model library.

5. The simulation system according to claim 2, wherein The scene construction module (2) is further configured to call the environmental parameters in the atmospheric environment mode library.

6. The simulation system according to any one of claims 1-5, characterized in that It further includes a parameter interface, and the parameter interface is used to connect to an external plugin to expand the functions of the simulation system.

7. The simulation system according to any one of claims 1-5, characterized in that, The calculation results of the model construction module (1), the scene construction module (2), the atmosphere calculation module (3), the thermal feature solving module (4), the infrared characteristic calculation module (5), and the sensor effect calculation module (6) can be stored and output separately.

8. An infrared scene simulation method, characterized in that, Applied to the simulation system according to any one of claims 1-7, the method includes: Constructing a background model and a target model to be simulated, and editing the materials of the background model and the target model; Setting the positions and movement trajectories of the background model and the target model to form a preset visible light scene, and setting scene parameters of the visible light scene, where the scene parameters include environmental parameters, simulation parameters, and camera and sensor parameters; Calculating the atmospheric transmission transmittance, background and surface scattered radiation intensity, and direct solar irradiance under the scene parameters; Calculating the temperature fields of the background model and the target model; Calculating a first infrared radiance image of the visible light scene based on the temperature field and the simulation parameters; Introduce sensor effects to the first infrared radiance image based on the sensor parameters to generate a final infrared simulation image.

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