CN115412664A - Intelligent target polarization imaging device and method - Google Patents
Intelligent target polarization imaging device and method Download PDFInfo
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
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Abstract
The invention belongs to the field of optical detection theory research, and particularly relates to an intelligent target polarization imaging device and method. The imaging device comprises a positioning unit, a small-sized weather instrument, a visible light camera, a main control computer, a two-dimensional turntable and a polarization imaging system; the main control computer is respectively connected with the positioning unit, the small-sized meteorological instrument and the two-dimensional rotary table through cables, and is respectively connected with the visible light camera and the polarization imaging system through network cables, and the visible light camera and the polarization imaging system are fixed on the two-dimensional rotary table. The method comprises the steps of firstly determining the geographical position and time through a positioning unit to know the position of the sun, then knowing the ambient light environment through a visible camera and a weather instrument, calculating the polarized light background of the environment where a target is located in advance, knowing how polarization compensation is better, and then shooting by using a polarization camera, so that the speed is high and the contrast is higher.
Description
Technical Field
The invention belongs to the field of optical detection theory research, and particularly relates to an intelligent target polarization imaging device and method.
Background
The photoelectric imaging equipment is mainly based on intensity imaging such as visible light camera or thermal infrared imager, namely, by acquiring the spatial distribution characteristics of the whole light intensity information of the target including the background, the interested target can be identified and tracked from the space by combining with an information processing means in the later period. The mode can play a role in normal weather and environment, but the detection performance is reduced in the weather environments such as haze, smoke dust and the like, and targets are often difficult to identify and distinguish. The polarization imaging detection has different polarization characteristics of different targets in background environments such as haze, water mist, cloud layers, forest lands, deserts and the like, plays advantages in military application, performs imaging, disguising targets, extracting target detail characteristics and the like under poor meteorological conditions, obtains wide attention in the military and civil fields, and becomes the key point of research of various countries.
The photoelectric system performance and the imaging effect are seriously influenced by the dynamic and static physical characteristics of adverse meteorological conditions and complex environments, the position of sunlight and the radiation intensity of ambient background light under different weather such as weather, snow, haze and the like, wherein the intensity and angle information of polarized light play a key role in the final imaging effect and target identification. However, no device for performing polarization imaging by calculating light field characteristics under a complex environment has been found so far, and therefore, an intelligent target polarization imaging device is urgently required to be developed.
For intelligent target polarization imaging, the miniaturization of the equipment is an important technical characteristic, and the modular design is a main technical basis for the standardization and the generalization of the equipment and the improvement of reliability and maintainability. Reliable environmental information acquisition and high-speed data processing are also main key technologies. In order to realize intelligent target polarization imaging, the device also needs to have the following functions: acquiring geographic position coordinates and time: the geographic position coordinates and time at the imaging moment are accurately obtained, and the sun zenith angle at the current moment is calculated, so that the influence of the sun zenith angle on the ambient light during imaging can be eliminated; (2) obtaining environmental meteorological parameters: in order to adapt to the reliable imaging effect in a severe environment, the environmental meteorological parameters of the current area must be acquired; (3) intelligent information fusion: in order to ensure reliability and imaging quality, a fast and intelligent information fusion technology is required.
Disclosure of Invention
In order to solve the above problems, the present invention provides an intelligent target polarization imaging apparatus and method.
The invention provides an intelligent target polarization imaging device, which comprises a positioning unit 1, a small-sized meteorological instrument 2, a visible light camera 3, a main control computer 4, a two-dimensional turntable 5 and a polarization imaging system 6, wherein the main control computer 4 is connected with the positioning unit; the main control computer 4 is respectively connected with the positioning unit 1, the small-sized weather instrument 2 and the two-dimensional rotary table 5 through cables, the main control computer 4 is respectively connected with the visible light camera 3 and the polarization imaging system 6 through network cables, and the visible light camera 3 and the polarization imaging system 6 are fixed on the two-dimensional rotary table 5.
Further, the positioning unit 1 acquires the geographic position coordinates and the time information in real time.
Further, the small-sized weather instrument 2 acquires weather information of the current geographical position in real time, including information of temperature, humidity, air pressure, visibility, wind direction, wind speed and rainfall.
Further, the visible light camera 3 acquires an ambient visible light image and a solar azimuth visible light image.
Further, the main control computer 4 calculates a solar zenith angle and a solar azimuth angle according to information provided by the positioning unit 1, the small-sized weather instrument 2 and the visible light camera 3, analyzes surrounding environment characteristics, visibility and atmospheric state, obtains a main direction and an optimal imaging angle of atmospheric polarized light, and controls the two-dimensional turntable 5 and the polarization imaging system 6 to complete imaging.
Further, the two-dimensional turntable 5 bears the visible light camera 3 and the polarization imaging system 6, and under the action of the main control computer 4, the visible light camera 3 and the polarization imaging system 6 keep synchronous motion, and the imaging angles of the visible light camera 3 and the polarization imaging system 6 are adjusted.
Further, the polarization imaging system 6 adopts a polarization camera capable of completing polarization image information acquisition, and has 0-degree, 45-degree, 90-degree, 135-degree and circular polarization image output.
The present invention provides an imaging method of the imaging apparatus as described above, the imaging method including the steps of:
s1, placing the device to a position to be observed to ensure that no shielding object exists in the direction of the position of the sun;
s2, switching on a device power supply, and communicating the main control computer 4 with the positioning unit 1 and the small-sized weather instrument 2 respectively to acquire geographic position coordinates, time information and current environment weather information;
s3, a main control computer 4 calculates the current sun position according to the geographical position coordinates and the time information, controls a two-dimensional turntable 5 to enable a visible light camera 3 to point to the sun for imaging, judges weather and atmospheric information from the imaging result, and controls the two-dimensional turntable 5 to return;
s4, the main control computer 4 calculates a solar zenith angle and a solar azimuth angle according to information provided by the positioning unit 1, the small-sized weather instrument 2 and the visible light camera 3, and integrates and analyzes the characteristics of the current peripheral environment light field;
and S5, the main control computer 4 controls the two-dimensional turntable 5 to enable the polarization imaging system 6 to enter a scanning shooting state, and adjusts the polarization parameters of the camera at different shooting angles to perform polarization compensation and finish scanning shooting.
As a whole, the present invention further provides an electronic device, including a memory and a processor, where the memory stores a computer program, and the electronic device is characterized in that the processor implements the steps of the imaging method when executing the computer program.
As a whole, the present invention also provides a computer-readable storage medium for storing computer instructions, wherein the computer instructions, when executed by a processor, implement the steps of the imaging method described above.
The invention has the beneficial effects that:
(1) Aiming at the defect of low contrast ratio of the intensity imaging target background in a complex light environment, a polarization imaging mode is adopted, and the contrast ratio of the target background is effectively improved.
(2) The method comprises the steps of firstly determining the geographic position and time through a positioning unit to know the position of the sun, then knowing the ambient light environment through a visible camera and a weather instrument, calculating the polarized light background of the environment where a target is located in advance, knowing how polarization compensation is better, ensuring reliability and imaging quality, and then shooting with a polarization camera, so that the speed is high, and the contrast is higher.
Drawings
FIG. 1 is a block diagram of an intelligent target polarization imaging apparatus according to the present invention.
Detailed Description
In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions of the present invention are clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the present invention is not limited by the following examples, and specific embodiments can be determined according to the technical solutions and practical situations of the present invention. Well-known methods, procedures, components and circuits have not been described in detail so as not to obscure the present invention.
The composition diagram of the intelligent target polarization imaging device provided by the embodiment is shown in fig. 1, and includes a positioning unit 1, a small-sized weather instrument 2, a visible light camera 3, a main control computer 4, a two-dimensional turntable 5 and a polarization imaging system 6; the main control computer 4 is respectively connected with the positioning unit 1, the small-sized weather instrument 2 and the two-dimensional rotary table 5 through cables, the main control computer 4 is respectively connected with the visible light camera 3 and the polarization imaging system 6 through network cables, and the visible light camera 3 and the polarization imaging system 6 are fixed on the two-dimensional rotary table 5.
The positioning unit 1 acquires the geographic position coordinate and the time information in real time, and the Beidou module GNSS2000 of Shenzhen conducting electronic technology Limited company can acquire the geographic position coordinate and the time information in real time, and can output the pulse per second with the positioning precision of 1m and the time precision of 1ms.
The small-sized weather instrument 2 acquires weather information of the current geographical position in real time, wherein the weather information comprises information of temperature, humidity, air pressure, visibility, wind direction, wind speed and rainfall.
The visible light camera 3 acquires an ambient visible light image and a solar azimuth visible light image.
The main control computer 4 calculates the sun zenith angle and the sun azimuth angle according to the information provided by the positioning unit 1, the small-sized weather instrument 2 and the visible light camera 3, analyzes the surrounding environment characteristics, the visibility and the atmospheric state, obtains the main direction and the optimal imaging angle of atmospheric polarized light, and controls the two-dimensional turntable 5 and the polarization imaging system 6 to complete imaging.
The two-dimensional turntable 5 bears the visible light camera 3 and the polarization imaging system 6, so that the visible light camera 3 and the polarization imaging system 6 keep synchronous motion under the action of the main control computer 4, and the imaging angles of the visible light camera 3 and the polarization imaging system 6 are adjusted. The imaging angle can be adjusted in two dimensions, including adjustment of the pitch angle and adjustment of the horizontal angle.
The polarization imaging system 6 adopts a polarization camera capable of completing polarization image information acquisition, adopts CCD and CMOS as imaging unit devices, and has 0-degree, 45-degree, 90-degree, 135-degree and circular polarization image output.
The present embodiment provides an imaging method of the imaging apparatus as described above, the imaging method including the steps of:
s1, the device is placed at a position needing to be observed, and no shielding object is guaranteed in the sun position direction. In order to adapt to different working requirements, the device can also set three different working modes: first, horizontal auto-scan imaging; secondly, pitching automatic scanning imaging; thirdly, automatically scanning and imaging the area; the identification work of the specific target around the environment can be completed by matching with subsequent target identification software or artificially observing the polarization image.
And S2, switching on a power supply of the device, and communicating the main control computer 4 with the positioning unit 1 and the small-sized weather instrument 2 respectively to acquire the geographic position coordinates, time information and current environmental weather information.
And S3, the main control computer 4 calculates the current sun position according to the geographic position coordinates and the time information, controls the two-dimensional turntable 5 to enable the visible light camera 3 to point to the sun for imaging, judges information such as weather clearness degree and atmospheric illumination degree from imaging results, and controls the two-dimensional turntable 5 to return.
And S4, the main control computer 4 calculates a sun zenith angle and a sun azimuth angle according to information provided by the positioning unit 1, the small-sized meteorological instrument 2 and the visible light camera 3, and fuses and analyzes the current peripheral environment light field characteristics including an atmospheric state, a sunlight main direction and polarization characteristics, and an environment background reflection main direction and polarization characteristics by combining temperature, humidity, atmospheric pressure, visibility, wind direction and wind speed and rainfall information.
And S5, the main control computer 4 controls the two-dimensional turntable 5 to enable the polarization imaging system 6 to enter a scanning shooting state, and adjusts the polarization parameters of the camera at different shooting angles to perform polarization compensation and finish scanning shooting.
The memory in the embodiments of the present application may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The non-volatile memory may be a Read Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash memory. Volatile memory can be Random Access Memory (RAM), which acts as external cache memory. By way of example, but not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), dynamic Random Access Memory (DRAM), synchronous Dynamic Random Access Memory (SDRAM), double data rate SDRAM, enhanced SDRAM, SLDRAM, synchronous Link DRAM (SLDRAM), and direct rambus RAM (DR RAM). It should be noted that the memories of the methods described herein are intended to comprise, without being limited to, these and any other suitable types of memories.
In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the application to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wire (e.g., coaxial cable, fiber optic, digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that incorporates one or more of the available media. The usable medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a Digital Video Disk (DVD)), or a semiconductor medium (e.g., a Solid State Disk (SSD)), among others.
In implementation, the steps of the above method may be performed by instructions in the form of integrated logic circuits of hardware or software in a processor. The steps of the method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware processor, or implemented by a combination of hardware and software modules in a processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in a memory, and a processor reads information in the memory and combines hardware thereof to complete the steps of the method. To avoid repetition, it is not described in detail here.
It should be noted that the processor in the embodiments of the present application may be an integrated circuit chip having signal processing capability. In implementation, the steps of the above method embodiments may be performed by integrated logic circuits of hardware in a processor or instructions in the form of software. The processor described above may be a general purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components. The various methods, steps, and logic blocks disclosed in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in a memory, and a processor reads information in the memory and completes the steps of the method in combination with hardware of the processor.
Claims (5)
1. An intelligent target polarization imaging device is characterized by comprising a positioning unit (1), a small-sized weather instrument (2), a visible light camera (3), a main control computer (4), a two-dimensional turntable (5) and a polarization imaging system (6); the main control computer (4) is respectively connected with the positioning unit (1), the small-sized meteorological instrument (2) and the two-dimensional rotary table (5) through cables, the main control computer (4) is respectively connected with the visible light camera (3) and the polarization imaging system (6) through network cables, and the visible light camera (3) and the polarization imaging system (6) are fixed on the two-dimensional rotary table (5); the positioning unit (1) acquires geographic position coordinates and time information in real time, the small-sized weather instrument (2) acquires weather information of the current geographic position in real time, wherein the weather information comprises information of temperature, humidity, air pressure, visibility, wind direction, wind speed and rainfall, the visible light camera (3) acquires an environment visible light image and a sun direction visible light image, the main control computer (4) calculates a sun zenith angle and a sun azimuth angle according to the information provided by the positioning unit (1), the small-sized weather instrument (2) and the visible light camera (3), analyzes surrounding environment characteristics, visibility and atmospheric state to obtain an atmosphere polarized light main direction and an optimal imaging angle, controls the two-dimensional turntable (5) and the polarization imaging system (6) to complete imaging, the two-dimensional turntable (5) bears the visible light camera (3) and the polarization imaging system (6), and enables the visible light camera (3) and the polarization imaging system (6) to keep synchronous motion under the action of the main control computer (4), and adjusts the imaging angles of the visible light camera (3) and the polarization imaging system (6).
2. The intelligent object polarization imaging device according to claim 1, wherein the polarization imaging system (6) employs a polarization camera capable of completing the collection of polarization image information, having 0 degree, 45 degree, 90 degree, 135 degree and circular polarization image outputs.
3. An imaging method of the imaging apparatus according to any one of claims 1 to 2, characterized by comprising the steps of:
s1, placing the device to a position to be observed to ensure that no shielding object exists in the direction of the position of the sun;
s2, switching on a power supply of the device, and communicating a main control computer (4) with the positioning unit (1) and the small-sized meteorological instrument (2) respectively to acquire a geographic position coordinate, time information and current environmental meteorological information;
s3, a main control computer (4) calculates the current sun position according to the geographical position coordinates and the time information, controls a two-dimensional turntable (5) to enable a visible light camera (3) to point to the sun for imaging, judges weather and atmospheric information from an imaging result, and controls the two-dimensional turntable (5) to return;
s4, the main control computer (4) calculates a solar zenith angle and a solar azimuth angle according to information provided by the positioning unit (1), the small-sized weather instrument (2) and the visible light camera (3), and integrates and analyzes the characteristics of the current peripheral environment light field;
and S5, the main control computer (4) controls the two-dimensional turntable (5) to enable the polarization imaging system (6) to enter a scanning shooting state, and adjusts the polarization parameters of the camera at different shooting angles to perform polarization compensation and finish scanning shooting.
4. An electronic device comprising a memory and a processor, the memory storing a computer program, wherein the processor implements the steps of the method of claim 3 when executing the computer program.
5. A computer readable storage medium storing computer instructions which, when executed by a processor, perform the steps of the method of claim 3.
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| CN115824413A (en) * | 2023-02-14 | 2023-03-21 | 长春理工大学 | Self-adaptive underwater polarization detection device, method, equipment and medium |
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