CN110109189A - Naval target infrared control method and device - Google Patents
Naval target infrared control method and device Download PDFInfo
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- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
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- G—PHYSICS
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- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
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Abstract
This application involves a kind of naval target infrared detection method and devices, are related to infrared detection technology field, and the method for detecting targets at sea includes obtaining the infra-red radiation brightness of the correspondence background of naval target and the naval target；The infrared contrast of the naval target with the corresponding background of the naval target is obtained according to the infra-red radiation brightness of the correspondence background of the naval target and the naval target；Infrared signature transformation is carried out to the naval target with the infrared contrast of the corresponding background of the naval target according to the naval target.The application quick and precisely identifies naval target by obtaining the red infrared signature information for corresponding to background with it of naval target.
Description
Technical Field
The application relates to the technical field of infrared detection, for example to a marine target infrared control method and device.
Background
The detection of the marine target is mainly divided into radar detection, visible light detection and the like. In the offshore environment, due to the existence of high-temperature, high-humidity and high-salt environment, the attenuation of visible light in the atmosphere is very fast, and the target is difficult to observe, identify and track at medium and long distances. The radar has long detection distance and reduced atmospheric attenuation in the marine environment, but the image resolution of the radar is lower even if the most advanced synthetic aperture radar at present is utilized due to the fact that the electromagnetic wavelength of the radar is centimeter. The distinguishing and identifying of small and medium-sized targets cannot be achieved by radar. And in the infrared environment, two wave band windows with less attenuation of 3-5 microns and 8-12 microns exist in the atmosphere, so that medium and long distance detection imaging can be realized. Meanwhile, the infrared wavelength is mainly concentrated in the micron wave band, and the imaging resolution ratio of the infrared imaging device is thousands of times higher than that of a radar imaging device. Therefore, in the marine environment, the infrared imaging detection is the main target identification means.
For marine targets, sometimes for the purpose of disguising and hiding, the contrast of the infrared characteristics of the targets with the background environment needs to be reduced so as to hide the targets from being discovered by infrared imaging of the other party; sometimes, for rescue, survival or other needs to be identified, the infrared characteristics of the infrared sensor need to be enhanced compared with the background environment.
Disclosure of Invention
The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview nor is intended to identify key/critical elements or to delineate the scope of such embodiments but rather as a prelude to the more detailed description that is presented later.
According to one aspect of the disclosed embodiments, a method for infrared control of an offshore target is provided.
In some optional embodiments, the method comprises:
acquiring an infrared radiation brightness of a marine target and a corresponding background of the marine target;
acquiring the infrared contrast of the marine target and the corresponding background of the marine target according to the infrared radiation brightness of the marine target and the corresponding background of the marine target;
and performing infrared feature transformation on the marine target according to the infrared contrast of the marine target and the corresponding background of the marine target.
According to another aspect of the disclosed embodiments, an infrared control device for a marine target is provided.
In some optional embodiments, the apparatus comprises:
a detection unit configured to: acquiring an infrared radiation brightness of a marine target and a corresponding background of the marine target; acquiring the infrared contrast of the marine target and the corresponding background of the marine target according to the infrared radiation brightness of the marine target and the corresponding background of the marine target; and a transformation unit configured to: and performing infrared feature transformation on the marine target according to the infrared contrast of the marine target and the corresponding background of the marine target.
According to another aspect of an embodiment of the present disclosure, a computer is provided.
In some alternative embodiments, the computer comprises an offshore object control device as described above.
According to another aspect of an embodiment of the present disclosure, an electronic device is provided.
In some optional embodiments, the electronic device comprises:
at least one processor; and a memory communicatively coupled to the at least one processor; wherein,
the memory stores instructions executable by the at least one processor, which when executed by the at least one processor, cause the at least one processor to perform the above-described offshore object control method.
According to another aspect of an embodiment of the present disclosure, a computer-readable storage medium is provided.
In some alternative embodiments, the computer-readable storage medium stores computer-executable instructions configured to perform the above-described marine target control method.
According to another aspect of an embodiment of the present disclosure, a computer program product is provided.
In some alternative embodiments, the computer program product comprises a computer program stored on a computer readable storage medium, the computer program comprising program instructions which, when executed by a computer, cause the computer to perform the above-described marine goal control method.
Some technical solutions provided by the embodiments of the present disclosure can achieve the following technical effects:
by obtaining infrared radiation characteristic information of the marine target red and the corresponding background, the infrared characteristics of the marine target are quickly and accurately identified, and meanwhile, the infrared characteristics of the marine target can be adjusted according to the detection result.
The foregoing general description and the following description are exemplary and explanatory only and are not restrictive of the application.
Drawings
One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the accompanying drawings and not in limitation thereof, in which elements having the same reference numeral designations are shown as like elements and not in limitation thereof, and wherein:
FIG. 1 is a schematic flow chart diagram provided by an embodiment of the present disclosure;
FIG. 2 is a graph showing the calculation results of atmospheric attenuation Modtran of 3 to 5 μm;
FIG. 3 is a graph showing the results of Modtran calculation for atmospheric attenuation of 8 to 12 μm;
FIG. 4 is a schematic diagram showing comparison between the fitting equation of infrared transmittance of 3-5 μm and the calculation result of Modtran;
FIG. 5 is a schematic diagram showing comparison between an infrared transmittance fitting formula of 8 to 12 μm and a Modtran calculation result;
FIG. 6 is a schematic diagram of an error analysis of 3-5 μm;
FIG. 7 is a schematic diagram of an error analysis of 8-12 μm;
fig. 8 is a schematic structural diagram of an electronic device provided in an embodiment of the present disclosure.
Reference numerals:
100: a processor; 101: a memory; 102: a communication interface; 103: a bus.
Detailed Description
So that the manner in which the features and elements of the disclosed embodiments can be understood in detail, a more particular description of the disclosed embodiments, briefly summarized above, may be had by reference to the embodiments, some of which are illustrated in the appended drawings. In the following description of the technology, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may be practiced without these details. In other instances, well-known structures and devices may be shown in simplified form in order to simplify the drawing.
As shown in fig. 1, an embodiment of the present disclosure provides an infrared control method for an offshore target, including:
acquiring an infrared radiation brightness of a marine target and a corresponding background of the marine target;
acquiring the infrared contrast of the marine target and the corresponding background of the marine target according to the infrared radiation brightness of the marine target and the corresponding background of the marine target;
and performing infrared feature transformation on the marine target according to the infrared contrast of the marine target and the corresponding background of the marine target.
In some embodiments, the performing infrared feature transformation on the marine target according to the infrared contrast of the marine target and the corresponding background of the marine target comprises:
comparing the infrared contrast of the marine target and the corresponding background of the marine target with a set threshold, and when the infrared contrast of the marine target and the corresponding background of the marine target is greater than the infrared contrast of the marine target and the corresponding background of the marine target, performing infrared feature transformation on the marine target. Alternatively, σsky，σseaall are set thresholds which are determined according to policies and stress levels. Optionally, the area is subjected to infrared signature transformation by heating or cooling.
In some embodiments, further comprising: acquiring azimuth information of the aerial threat;
obtaining according to the position information of the aerial threat: infrared contrast of a marine target detected at an airborne threat angle to a corresponding background of the marine target.
In some embodiments, further comprising:
dividing the offshore target surface into one or more units;
obtaining, from the infrared contrast of each of the cells with its corresponding background: an infrared contrast of the marine target to a corresponding background of the marine target.
In some embodiments, further comprising: obtaining according to the position information of the aerial threat: detecting infrared contrast of each unit and a corresponding background of the unit at an airborne threat angle;
obtaining, from the infrared contrast of each of the units detected at the airborne threat angle to the unit's corresponding background: the infrared contrast of the marine target detected at the airborne threat angle to the corresponding background of the marine target.
In some embodiments, the corresponding context comprises one or more of: a marine background and a sky background.
In some embodiments, the location information of the airborne threat includes one or more of: a vertical pixel count of the airborne threat, a vertical resolution angle of the airborne threat, and a horizontal pixel count of the airborne threat.
The embodiment of the present disclosure further provides an infrared control device for an offshore target, including:
a detection unit configured to: acquiring an infrared radiation brightness of a marine target and a corresponding background of the marine target; acquiring the infrared contrast of the marine target and the corresponding background of the marine target according to the infrared radiation brightness of the marine target and the corresponding background of the marine target; and a transformation unit configured to: and performing infrared feature transformation on the marine target according to the infrared contrast of the marine target and the corresponding background of the marine target.
In some embodiments, the transformation unit is further configured to: comparing the infrared contrast of the marine target and the corresponding background of the marine target with a set threshold, and when the infrared contrast of the marine target and the corresponding background of the marine target is greater than the infrared contrast of the marine target and the corresponding background of the marine target, performing infrared feature transformation on the marine target.
In some embodiments, the detection unit is further configured to:
acquiring azimuth information of the aerial threat;
obtaining according to the position information of the aerial threat: infrared contrast of a marine target detected at an airborne threat angle to a corresponding background of the marine target.
In some embodiments, the detection unit is further configured to:
dividing the offshore target surface into one or more units;
obtaining, from the infrared contrast of each of the cells with its corresponding background: an infrared contrast of the marine target to a corresponding background of the marine target.
In some embodiments, the detection unit is further configured to:
obtaining according to the position information of the aerial threat: detecting infrared contrast of each unit and a corresponding background of the unit at an airborne threat angle;
obtaining, from the infrared contrast of each of the units detected at the airborne threat angle to the unit's corresponding background: the infrared contrast of the marine target detected at the airborne threat angle to the corresponding background of the marine target.
In some embodiments, the corresponding context comprises one or more of:
a marine background and a sky background.
In some embodiments, the location information of the airborne threat includes one or more of:
a vertical pixel count of the airborne threat, a vertical resolution angle of the airborne threat, and a horizontal pixel count of the airborne threat.
The embodiment of the disclosure also provides a computer, which comprises the offshore target control device.
Optionally, sensing the ocean background infrared features of the marine target and the surrounding sky background infrared features by using an infrared detector; and sensing the direction and distance of the air threat by using an infrared detector or a radar detector. And sensing the self infrared radiation characteristic distribution condition of the marine target by using a temperature sensor, an infrared detector and the like.
ComputingObtaining an infinite sky background;
the offshore target surface is divided into x rows and y columns of cells.
ComputingAnd obtaining the infrared contrast of the (x, y) th unit of the surface of the marine target and the corresponding part of the sky background.
ComputingAnd obtaining the infrared contrast of the (x, y) th unit of the sea target surface and the corresponding sky background detected at the air threat angle.
ComputingAnd obtaining the infrared contrast of the marine target detected at the air threat angle and the corresponding sky background.
Marine target and corresponding marine background:
computingAnd obtaining the infrared contrast of the (x, y) th unit on the surface of the marine target and the corresponding part of the marine background.
ComputingAnd obtaining the infrared contrast of the (x, y) th unit of the sea target surface detected at the air threat angle and the corresponding sea background.
ComputingAnd obtaining the infrared contrast of the marine target detected at the air threat angle and the corresponding marine background.
Wherein: and M is the vertical pixel number of the aerial threat imaging device, and M belongs to M. a is the vertical resolution angle of the airborne threat imaging apparatus.The infrared radiation brightness of the (x, y) th unit of the surface of the marine target is shown, and the background of the infrared radiation brightness is a marine background;the infrared radiation brightness of the (x, y) th unit of the surface of the marine target is shown, and the background of the infrared radiation brightness is sky background; l issky(x, y) is the infrared radiation brightness of the sky background corresponding to the (x, y) th unit of the offshore target surface; l issea(x, y) is the infrared radiation brightness of the ocean background corresponding to the (x, y) th unit on the surface of the offshore target;is sky infrared brightness at infinity corresponding to the air threat field angle a. The size of the divided units of the marine target surface is determined according to the size of the imaging unit of the aerial threat.
TransFor transmittance, two wave band windows with less attenuation of 3-5 μm and 8-12 μm exist in the atmosphere in the infrared in the marine environment, and optionally, the wave band windows with less attenuation of 3-5 μm and T in the marine environment are selectedrens，3-6＝0.01763+0.86539e-2.00713E-4×R；
8-12 mu m, T of marine environmentrens，0～1.2＝0.00976+0.98841e-1.35485E-4×R。
Optionally, taking an average value of infrared radiation brightness of the unobstructed sky or ocean background at the horizontal position on the infrared threat thermography as the L of the target corresponding unitsky(x, y) or Lsea(x, y), namely:said Lsky，nThe brightness of the infrared radiation of the unobstructed sky background, LseanIs the infrared radiation brightness of the unobstructed ocean background. N is the number of horizontal pixels of the aerial threat imaging apparatus, and X is the number of pixels occupied by the target in the horizontal direction.
For marine targets, the threat of using infrared as a detection means comes mainly from airborne, e.g. airborne aircraft. Ships on the sea surface can also use infrared as a detection means to threaten the marine targets. Since a vessel on the sea surface can be viewed as an airborne target with a very low altitude (close to horizontal, altitude close to 0 °), for this reason the present case is collectively referred to as an airborne threat. And after the searching radar finds an air threat (an airplane or a water surface ship), recording parameters such as the distance, the altitude angle, the azimuth angle, the speed and the like of the air threat from the marine target in the scheme, and finishing sensing the air threat.
The marine target is in two typical backgrounds of sea and sky, and the aerial threat can utilize infrared detection to detect the infrared radiation of the marine target, and can also detect the infrared radiation of the sea and the sky in the infrared field of view. The detected ocean and sky infrared radiation forms the infrared background of the marine target. In order to accurately calculate the infrared contrast of the marine target, the ocean and sky infrared backgrounds corresponding to the marine target need to be obtained in time. The main method comprises the following steps: and measuring the infrared radiation of the ocean and the sky around the offshore target by using a thermal infrared imager, recording the infrared radiation brightness of the ocean and the sky, forming a corresponding infrared radiation thermograph, and finishing the perception of the ocean and sky infrared background where the offshore target is located.
The infrared radiation capability of a marine target determines whether the infrared signal of the marine target is sufficient to generate an effective signal response after the infrared signal reaches an infrared detector through space propagation. The monochromatic infrared radiation capability of the target surface can meet Planck's law according to the heat transfer science.In the formula Mb，λIs the spectral radiance of a black body, i.e. the monochromatic radiance of a black body, W/(m)2·μm)；c1＝3.7418×108W·μm4/m2；c2＝1.4388×104μ m.K; λ is wavelength, μm; t is the absolute temperature of the surface of the offshore target, K. If the emissivity e of the surface is constant over the entire wavelength range, thenWherein M is the marine target surface full-wave-band hemispherical space radiance W/M2; sigma is Boltzmann constant sigma 5.67 x 10-8W/(m2·K4). In practical use, the research on target infrared radiation focuses on the ranges of several 'atmospheric infrared window' wave bands (mainly comprising 3-5 μm and 8-12 μm),whereinTo target at λ1～λ2Wave band hemisphere space radiation brightness W/m2；λ1And λ2The radiation band is 3-5 μm, 8-12 μm, etc. In the infrared lambda1～λ2Mid-band, surface infrared radiance(W/(m2 sr)) is:
in general, infrared atmospheric transmittance is a function of numerous parameters, such as temperature, humidity, wind speed, observation altitude, and observation distance.
When the atmospheric environmental conditions do not vary much and the observation altitude is horizontal, the infrared atmospheric transmittance can be considered as a function of the observation distance: τ ═ f (r), where: τ is the atmospheric transmittance; and R is an observation distance. From the calculation results shown in fig. 2 and 3, it can be determined that τ ═ f (r) satisfies the exponential change relationship. For this purpose, the exponential form relation T ═ T is usedc+A×aS×RFitting is carried out on the Modtran calculation result.
| Transmittance of 3 to 5 μm | A transmittance of 8 to 12 μm | |
| T0 | 0.01763 | 0.00976 |
| A | 0.86539 | 0.98841 |
| B | -2.00713E-4 | -1.35085E-4 |
TABLE 1 ocean Environment Infrared transmittance fast Algorithm fitting coefficients
Substituting the coefficient of table 1 into T ═ Tc+A×eS×RAnd obtaining a rapid algorithm formula. Transmittance of 3-5 μm in marine environment:transmittance of 8-12 μm in marine environment:
| serial number | Distance sample km | Relative error of 3-5 μm% | Relative error of 8-12 μm% |
| 1. | 0.1 | 2.168 | 0.149 |
| 2. | 0.5 | -0.509 | 0.048663 |
| 3. | 1 | -1.284 | -0.03746 |
| 4. | 2 | -1.189 | -0.126 |
| 5. | 3 | -0.625 | -0.134 |
| 6. | 4.5 | 0.146 | -0.08503 |
| 7. | 6 | 0.613 | -0.01364 |
| 8. | 8 | 0.834 | 0.071019 |
| 9. | 10 | 0.728 | 0.122 |
| 10. | 12 | 0.473 | 0.124 |
| 11. | 15 | -0.01588 | 0.074401 |
| 12. | 18 | -0.478 | -0.03416 |
| 13. | 21 | -0.862 | -0.159 |
TABLE 2 fitting results of 3-5 μm wave band under measurement environment
As shown in fig. 4 to 7 and table 2, infrared transmittances of 3 to 5 μm and 8 to 12 μm at 13 different distances were calculated by Modtran, and infrared transmittances of corresponding wavelength bands varying with the distance were obtained. Fitting was performed using an exponential functional relationship. Through comparison and analysis of 13 numerical sampling points, the maximum error of the rapid calculation method for the infrared transmittance of 3-5 microns is only 2.16%, and the maximum error of 8-12 microns is 0.16%. The calculation error is within the engineering application allowable range.
The method can quickly calculate the infrared transmittance of the marine environment under the condition of ensuring the precision, and can accurately control the infrared radiation characteristics of the marine target by receiving the infrared threat situation information in the air, the target and background infrared radiation characteristic information, combining a control strategy and a target background discretization processing method, wherein the error of the infrared radiation characteristics is not more than 1mw/sr. square meter.
The sea antenna is arranged in the middle of the thermal image, the sea is arranged below the sea antenna in the thermal image, the sky is arranged above the sea antenna, the sky is uneven, the background of the sky close to the sea antenna is brighter, the sea surface is slightly darker when the sea antenna is directly changed from the brightest to the sea surface, and therefore the sea antenna can be seen, but the sea antenna is also gradually changed upwards. The existing calculation only calculates a zero angle, which is not correct in practice, except the zero angle, the difference is 0.1 degree, 0.2 degree and the like, although the angle difference is small, the calculated sky background difference is large, and in order to solve the problem, the calculation of the sky background at infinity from the angle of the thermal image is more accurate. I.e. inside the sea backdrop, the upper half of the ship is above the sea antenna, i.e. inside the sky background, i.e. half of the ship is in the sea and half is in the sky. The sea-sky-line has the highest brightness value, gradually attenuates towards the sky, also gradually attenuates towards the sea, and only the gradient of attenuation is not large as that of sky-direction attenuation, but the gradient of sky-direction attenuation is large, and the brightness is slightly poor but much worse. According to the idea of contrast actual measurement, calculating each angle, converting according to the angle of view and the distance, for example, the distance is 20 kilometers away, the thermal imager has the angle of view and is fixed, bringing the angle in, and determining the area corresponding to the 20 kilometers, for example, whether the corresponding pixel unit is on the sky or in the sea, if the sky zero angle is large, calculating the infrared brightness, thus calculating a pixel, and then the second pixel has different angles when viewed from the thermal imager, and as long as the sky zero angle is adjusted, thus the whole sky background can be reproduced by the upward part of the sea antenna. Thus, by means of simulation, the background of the sea and the sky can be completely reproduced according to given parameters, and the background is already present. Aiming at the target, the brightness of the target can be calculated by knowing the temperature, the emissivity and the distance of the surface of the target and the corresponding pixel unit, the ship is projected onto the sea level according to a geometric projection method, the target and the background on the sea are reproduced, and the reproduction method is very accurate. Controlling the marine target, raising the temperature of the marine target when the marine target is obviously compared, and making the marine target different from the marine background and the sky background and stand out; if it is not wanted to be seen by others, the temperature is lowered, making it the same as the ocean background and sky background.
The disclosed embodiments also provide a computer-readable storage medium storing computer-executable instructions configured to perform the above-mentioned offshore object control method.
Embodiments of the present disclosure also provide a computer program product comprising a computer program stored on a computer-readable storage medium, the computer program comprising program instructions that, when executed by a computer, cause the computer to perform the above-mentioned marine target control method.
The computer-readable storage medium described above may be a transitory computer-readable storage medium or a non-transitory computer-readable storage medium.
An embodiment of the present disclosure further provides an electronic device, a structure of which is shown in fig. 8, where the electronic device includes:
at least one processor (processor)100, one processor 100 being exemplified in fig. 8; and a memory (memory)101, and may further include a Communication Interface (Communication Interface)102 and a bus 103. The processor 100, the communication interface 102, and the memory 101 may communicate with each other via a bus 103. The communication interface 102 may be used for information transfer. Processor 100 may invoke logic instructions in memory 101 to perform the offshore object detection method of the above-described embodiments.
In addition, the logic instructions in the memory 101 may be implemented in the form of software functional units and stored in a computer readable storage medium when the logic instructions are sold or used as independent products.
The memory 101, which is a computer-readable storage medium, may be used for storing software programs, computer-executable programs, such as program instructions/modules corresponding to the methods in the embodiments of the present disclosure. The processor 100 executes functional applications and data processing by executing software programs, instructions and modules stored in the memory 101, that is, implements the offshore object control method in the above method embodiment.
The memory 101 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function; the storage data area may store data created according to the use of the terminal device, and the like. In addition, the memory 101 may include a high-speed random access memory, and may also include a nonvolatile memory.
The technical solution of the embodiments of the present disclosure may be embodied in the form of a software product, where the computer software product is stored in a storage medium and includes one or more instructions to enable a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method of the embodiments of the present disclosure. And the aforementioned storage medium may be a non-transitory storage medium comprising: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes, and may also be a transient storage medium.
The above description and drawings sufficiently illustrate embodiments of the disclosure to enable those skilled in the art to practice them. Other embodiments may incorporate structural, logical, electrical, process, and other changes. The examples merely typify possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in or substituted for those of others. The scope of the disclosed embodiments includes the full ambit of the claims, as well as all available equivalents of the claims. As used in this application, although the terms "first," "second," etc. may be used in this application to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, unless the meaning of the description changes, so long as all occurrences of the "first element" are renamed consistently and all occurrences of the "second element" are renamed consistently. The first and second elements are both elements, but may not be the same element. Furthermore, the words used in the specification are words of description only and are not intended to limit the claims. As used in the description of the embodiments and the claims, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. Similarly, the term "and/or" as used in this application is meant to encompass any and all possible combinations of one or more of the associated listed. Furthermore, the terms "comprises" and/or "comprising," when used in this application, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method or apparatus that comprises the element. In this document, each embodiment may be described with emphasis on differences from other embodiments, and the same and similar parts between the respective embodiments may be referred to each other. For methods, products, etc. of the embodiment disclosures, reference may be made to the description of the method section for relevance if it corresponds to the method section of the embodiment disclosure.
Those of skill in the art would appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software may depend upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the disclosed embodiments. It can be clearly understood by the skilled person that, for convenience and brevity of description, the specific working processes of the system, the apparatus and the unit described above may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the embodiments disclosed herein, the disclosed methods, products (including but not limited to devices, apparatuses, etc.) may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units may be merely a logical division, and in actual implementation, there may be another division, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form. The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to implement the present embodiment. In addition, functional units in the embodiments of the present disclosure may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to embodiments of the present disclosure. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). In some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. Each block of the block diagrams and/or flowchart illustrations, and combinations of blocks in the block diagrams and/or flowchart illustrations, can be implemented by special purpose hardware-based systems that perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
Claims (15)
1. An infrared control method for offshore targets, which is characterized by comprising the following steps:
acquiring an infrared radiation brightness of a marine target and a corresponding background of the marine target;
acquiring the infrared contrast of the marine target and the corresponding background of the marine target according to the infrared radiation brightness of the marine target and the corresponding background of the marine target;
and performing infrared feature transformation on the marine target according to the infrared contrast of the marine target and the corresponding background of the marine target.
2. The method of claim 1, wherein the infrared feature transformation of the marine target according to the infrared contrast of the marine target and the corresponding background of the marine target comprises:
comparing the infrared contrast of the marine target and the corresponding background of the marine target with a set threshold, and when the infrared contrast of the marine target and the corresponding background of the marine target is greater than the infrared contrast of the marine target and the corresponding background of the marine target, performing infrared feature transformation on the marine target.
3. The method of claim 2, further comprising: acquiring azimuth information of the aerial threat;
obtaining according to the position information of the aerial threat: infrared contrast of a marine target detected at an airborne threat angle to a corresponding background of the marine target.
4. The method of claim 2, further comprising:
dividing the offshore target surface into one or more units;
obtaining, from the infrared contrast of each of the cells with its corresponding background: an infrared contrast of the marine target to a corresponding background of the marine target.
5. The method of claim 4, further comprising:
obtaining according to the position information of the aerial threat: detecting infrared contrast of each unit and a corresponding background of the unit at an airborne threat angle;
obtaining, from the infrared contrast of each of the units detected at the airborne threat angle to the unit's corresponding background: the infrared contrast of the marine target detected at the airborne threat angle to the corresponding background of the marine target.
6. The method according to claims 1 to 5, wherein the corresponding background comprises one or more of the following:
a marine background and a sky background.
7. The method of claims 3 to 5, wherein the position information of the airborne threat comprises one or more of:
a vertical pixel count of the airborne threat, a vertical resolution angle of the airborne threat, and a horizontal pixel count of the airborne threat.
8. An infrared control device for marine targets, comprising:
a detection unit configured to: acquiring an infrared radiation brightness of a marine target and a corresponding background of the marine target; acquiring the infrared contrast of the marine target and the corresponding background of the marine target according to the infrared radiation brightness of the marine target and the corresponding background of the marine target; and
a transformation unit configured to: and performing infrared feature transformation on the marine target according to the infrared contrast of the marine target and the corresponding background of the marine target.
9. The apparatus of claim 8, wherein the transform unit is further configured to:
comparing the infrared contrast of the marine target and the corresponding background of the marine target with a set threshold, and when the infrared contrast of the marine target and the corresponding background of the marine target is greater than the infrared contrast of the marine target and the corresponding background of the marine target, performing infrared feature transformation on the marine target.
10. The apparatus of claim 9, wherein the detection unit is further configured to:
acquiring azimuth information of the aerial threat;
obtaining according to the position information of the aerial threat: infrared contrast of a marine target detected at an airborne threat angle to a corresponding background of the marine target.
11. The apparatus of claim 9, wherein the detection unit is further configured to:
dividing the offshore target surface into one or more units;
obtaining, from the infrared contrast of each of the cells with its corresponding background: an infrared contrast of the marine target to a corresponding background of the marine target.
12. The apparatus of claim 11, wherein the detection unit is further configured to:
obtaining according to the position information of the aerial threat: detecting infrared contrast of each unit and a corresponding background of the unit at an airborne threat angle;
obtaining, from the infrared contrast of each of the units detected at the airborne threat angle to the unit's corresponding background: the infrared contrast of the marine target detected at the airborne threat angle to the corresponding background of the marine target.
13. The apparatus of claims 8 to 12, wherein the corresponding context comprises one or more of:
a marine background and a sky background.
14. The apparatus of claims 10 to 12, wherein the position information of the airborne threat comprises one or more of:
a vertical pixel count of the airborne threat, a vertical resolution angle of the airborne threat, and a horizontal pixel count of the airborne threat.
15. A computer comprising an apparatus as claimed in any one of claims 8 to 14.
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