Ship target detail enhancement method and device based on infrared radiation brightness

Abstract

The invention provides a ship target detail enhancement method and device based on infrared radiation brightness. The method comprises the following steps: querying in a pre-generated target infrared radiation characteristic distribution query table by taking distance measurement parameters and meteorological parameters of a ship target as conditions to obtain radiation brightness of a ship target chimney area and a ship target main body area except the chimney area, and taking the radiation brightness as ship target radiation prior information; according to the radiation brightness of the ship target chimney area and the ship target main body area except the chimney area, in combination with the equipment radiation calibration parameters, inverting gray level distribution of the ship target chimney area and the ship target main body area except the chimney area; a'double-peak 'gray level transformation curve is generated based on gray level distribution of a ship target chimney area and a ship target main body area except the chimney area, and stretching transformation is performed on an infrared measurement image so as to highlight the ship target chimney and other main body areas, suppress a background area and realize enhancement of ship target details.

Description

Technical Field

[0001] The embodiments of the present invention relate to the technical field of infrared target detail enhancement, and in particular to a method and device for enhancing ship target details based on infrared radiation brightness. Background Art

[0002] Infrared radiation measurement of sea surface targets is a common measurement scenario in infrared testing. The strong reflection of flares suppresses the radiation of ship targets, resulting in unclear overall contours of ship targets, which is not conducive to image target interpretation and data processing. Therefore, it is necessary to enhance the sea surface ship targets.

[0003] At present, the enhancement methods for sea surface ship targets are mainly divided into conventional methods and deep learning methods; among them, the histogram equalization and global grayscale transformation methods are the most representative of the conventional methods. This enhancement method is mainly based on global image adjustment enhancement, which cannot achieve targeted enhancement of the ship target area, while the deep learning method requires a large amount of data training and the model generalization is insufficient, which cannot meet the application requirements well. In addition, the above methods have failed to solve the problem of the strong reflection of flares suppressing the radiation of ship targets, and thus cannot achieve targeted enhancement of the overall brightness and details of ship targets.

[0004] Therefore, there is an urgent need to provide a method and device for ship target detail enhancement based on infrared radiation brightness. Summary of the invention

[0005] In order to solve the problem that the traditional ship target enhancement method cannot achieve targeted enhancement of the overall brightness and details of the ship target, the embodiment of the present invention provides a ship target detail enhancement method and device based on infrared radiation brightness.

[0006] In a first aspect, an embodiment of the present invention provides a method for enhancing ship target details based on infrared radiation brightness, comprising:

[0007] Obtain infrared measurement images of ship targets, ranging parameters of ship targets and meteorological parameters;

[0008] Based on the ranging parameters and meteorological parameters of the ship target, a query is performed in the pre-generated target infrared radiation characteristic distribution query table to obtain the radiation brightness distribution of the chimney area of ​​the ship target and the main area of ​​the ship target excluding the chimney area;

[0009] Calculating the grayscale distribution of the chimney area of ​​the ship target and the main area of ​​the ship target except the chimney area according to the radiation brightness distribution of the chimney area of ​​the ship target and the main area of ​​the ship target except the chimney area;

[0010] Generate a grayscale transformation mapping curve based on the grayscale distribution of the chimney area of ​​the ship target and the main area of ​​the ship target except the chimney area;

[0011] Grayscale transformation is performed on each pixel of the infrared measurement image according to the grayscale transformation mapping curve to enhance the details of the ship target.

[0012] In a second aspect, an embodiment of the present invention further provides a device for enhancing ship target details based on infrared radiation brightness, comprising:

[0013] An acquisition unit, used to acquire infrared measurement images of ship targets, ranging parameters of ship targets and meteorological parameters;

[0014] A query unit is used to query the pre-generated target infrared radiation characteristic distribution query table based on the ranging parameters and meteorological parameters of the ship target, and obtain the radiation brightness distribution of the chimney area of ​​the ship target and the main area of ​​the ship target excluding the chimney area;

[0015] A calculation unit, configured to calculate the grayscale distribution of the chimney area of ​​the ship target and the main area of ​​the ship target excluding the chimney area according to the radiation brightness distribution of the chimney area of ​​the ship target and the main area of ​​the ship target excluding the chimney area;

[0016] A generating unit, configured to generate a grayscale transformation mapping curve based on the grayscale distribution of the chimney region of the ship target and the main body region of the ship target except the chimney region;

[0017] The enhancement unit is used to perform grayscale transformation on each pixel of the infrared measurement image according to the grayscale transformation mapping curve to enhance the details of the ship target.

[0018] In a third aspect, an embodiment of the present invention further provides an electronic device, including a memory and a processor, wherein the memory stores a computer program, and when the processor executes the computer program, the method described in any embodiment of this specification is implemented.

[0019] In a fourth aspect, an embodiment of the present invention further provides a computer-readable storage medium having a computer program stored thereon, which, when executed in a computer, enables the computer to execute the method described in any embodiment of this specification.

[0020] In a fifth aspect, an embodiment of the present invention further provides a computer program product, including a computer program, which implements the method described in any of the above embodiments when executed by a processor.

[0021] The embodiment of the present invention provides a method and device for enhancing the details of a ship target based on infrared radiation brightness. Starting from the infrared radiation characteristics of the ship target as a whole, by focusing on analyzing the infrared radiation characteristics of the chimney area of ​​the ship target and the main body of the ship except the chimney area, combining the infrared radiation calibration results of the measuring equipment, the grayscale change range of the chimney area of ​​the ship target and the main body of the ship target is inverted, the grayscale distribution characteristics are statistically analyzed, and a grayscale transformation mapping curve with the grayscale center of the ship target as the "main peak" is generated by a grayscale transformation method. Finally, the infrared measurement image is grayscale transformed based on the grayscale transformation mapping curve, thereby effectively suppressing the background brightness of the sea surface flare, thereby achieving targeted enhancement of the overall brightness and details of the ship target, which is beneficial to subsequent image target interpretation and data processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 This is a flow chart of a method for enhancing ship target details based on infrared radiation brightness provided by an embodiment of the present invention;

[0024] Figure 2 is a hardware architecture diagram of an electronic device provided by an embodiment of the present invention;

[0025] Figure 3 It is a structural diagram of a ship target detail enhancement device based on infrared radiation brightness provided by one embodiment of the present invention. DETAILED DESCRIPTION

[0026] In order to make the purpose, 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 in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0027] The specific implementation of the above concept is described below.

[0028] Please refer to Figure 1 The embodiment of the present invention provides a method for enhancing ship target details based on infrared radiation brightness, the method comprising:

[0029] Step 100: Acquire an infrared measurement image of a ship target, a ranging parameter of the ship target, and a meteorological parameter;

[0030] Step 102: using the distance measurement parameters and meteorological parameters of the ship target as conditions, querying in a pre-generated target infrared radiation characteristic distribution query table to obtain the radiation brightness distribution of the chimney area of ​​the ship target and the main area of ​​the ship target excluding the chimney area;

[0031] Step 104: calculating the grayscale distribution of the chimney region of the ship target and the main region of the ship target excluding the chimney region according to the radiation brightness distribution of the chimney region of the ship target and the main region of the ship target excluding the chimney region;

[0032] Step 106: generating a grayscale transformation mapping curve based on the grayscale distribution of the chimney area of ​​the ship target and the main area of ​​the ship target excluding the chimney area;

[0033] Step 108: Perform grayscale transformation on each pixel of the infrared measurement image according to the grayscale transformation mapping curve to enhance the details of the ship target.

[0034] In the embodiment of the present invention, starting from the infrared radiation characteristics of the ship target as a whole, by focusing on analyzing the infrared radiation characteristics of the chimney area of ​​the ship target and the main body of the ship except the chimney area, combined with the infrared radiation calibration result of the measuring equipment, the grayscale change range of the chimney area of ​​the ship target and the main body area of ​​the ship target is inverted, the grayscale distribution characteristics are statistically analyzed, and the grayscale transformation method is used to generate a grayscale transformation mapping curve with the grayscale center of the ship target as the "main peak". Finally, the infrared measurement image is grayscale transformed based on the grayscale transformation mapping curve, and the infrared measurement image is stretched to highlight the chimney area and other main body areas of the ship target, thereby effectively suppressing the background brightness of the sea surface flare, and then achieving the targeted enhancement of the overall brightness and details of the ship target, which is beneficial to the subsequent image target interpretation and data processing.

[0035] Described below Figure 1 How the various steps are performed.

[0036] For step 100 and step 102:

[0037] In some embodiments, in step 102, the infrared radiation feature distribution query table is generated based on the infrared radiation brightness of the target corresponding to different meteorological parameters and different ranging parameters in the target infrared radiation feature library.

[0038] In an embodiment of the present invention, in an existing target infrared radiation feature library, a statistical analysis is performed on the distribution of apparent infrared radiation features of ship targets (such as ships, warships, etc.) with different profiles under different meteorological parameters (such as sunny, rainy, snowy, etc.) and different observation distance parameters, and an infrared radiation feature distribution query table is generated according to the statistical analysis results. In actual application, the overall profile of the ship target is first determined based on the obtained infrared measurement image of the ship target, and further combined with the current ranging parameters and meteorological parameters as screening conditions, the infrared radiation brightness corresponding to the ship target under the same ranging parameters and meteorological parameters is queried from the target infrared radiation feature distribution query table.

[0039] Regarding step 104:

[0040] In some embodiments, the grayscale distribution of the chimney region of the ship target and the main body region of the ship target excluding the chimney region is calculated by the following formula:

[0041] DN=(Lb) / k

[0042] Where DN is one of the gray values ​​in the chimney area of ​​the ship target or the main area of ​​the ship target except the chimney area, L is the radiation brightness of the chimney area of ​​the ship target or the main area of ​​the ship target except the chimney area, and b is the slope of the linear calibration curve of the measuring equipment, with the unit of W / (sr.m 2 ), k is the offset of the linear calibration curve of the measuring device, in W / (sr.m 2 ).

[0043] Since in the ship target, the radiation brightness distribution of the chimney area is quite different from that of other main areas, therefore, in the embodiment of the present invention, the main body of the ship target is divided into two parts: the chimney area of ​​the ship target and the main area excluding the chimney area. Firstly, the infrared radiation brightness distribution of the two major parts of the radiation brightness distribution Lc1-Lc2 of the main body of the ship target and the radiation brightness distribution Lt1-Lt2 of the chimney area are searched in the pre-generated target infrared radiation characteristic distribution query table. Combined with the infrared radiation calibration result of the measuring equipment, the radiation brightness distribution values ​​of the chimney area of ​​the ship target and the main area of ​​the ship target excluding the chimney area are respectively substituted into the above formula, so as to invert the grayscale variation ranges DNc1~DNc2 and DNt1~DNt2 of the main area of ​​the ship target and the chimney area, so as to obtain the grayscale distribution of the chimney area of ​​the ship target and the main area of ​​the ship target excluding the chimney area, which is conducive to the subsequent targeted enhancement of the overall brightness and details of the ship target.

[0044] Regarding step 106:

[0045] In some implementations, step 106 includes:

[0046] Determine the grayscale center and grayscale fluctuation corresponding to each peak of the grayscale transformation mapping curve based on the grayscale distribution of the chimney area of ​​the ship target and the main area of ​​the ship target excluding the chimney area;

[0047] The grayscale transformation mapping curve is generated according to the grayscale center and grayscale fluctuation corresponding to each peak value.

[0048] In some embodiments, the grayscale center and grayscale fluctuation corresponding to each peak of the grayscale transformation mapping curve are determined by the following formula:

[0049] DN i =(DN max +DN min ) / 2

[0050] σ i =(DN max -DN min ) / m

[0051] Where, DN i is the grayscale center corresponding to the i-th peak, i is 1, 2, DN max DN is the maximum gray value in the chimney area of ​​the ship target or in the main body area of ​​the ship target except the chimney area. min is the minimum gray value in the chimney area of ​​the ship target or the main area of ​​the ship target except the chimney area, σ i is the grayscale fluctuation corresponding to the i-th peak value, m is the grayscale adjustment parameter, which is used to determine the grayscale variation range and can be selected according to the specific situation of the ship target. In the embodiment of the present invention, m is set to 6.

[0052] In some implementations, the grayscale transformation mapping curve has a relationship as follows:

[0053]

[0054] Wherein, DN_adjust is the pixel grayscale value before adjustment, DN_normal is the pixel grayscale value after adjustment (ranging from 0 to 255), DN is the pixel grayscale value of the original infrared measurement image, DN1 is the grayscale center corresponding to the first peak, DN2 is the grayscale center corresponding to the second peak, σ1 is the grayscale fluctuation corresponding to the first peak, and σ2 is the grayscale fluctuation corresponding to the second peak.

[0055] In the embodiment of the present invention, by further counting the grayscale distribution characteristics of the chimney area and the main area of ​​the ship target, a "double-peak" grayscale transformation method is used to generate a grayscale transformation mapping curve with the grayscale center of the ship target as the "main peak".

[0056] Regarding step 108:

[0057] In the embodiment of the present invention, by substituting each pixel of the initial infrared image obtained in step 100 into the grayscale transformation mapping curve function relationship generated in step 106, the grayscale of the pixels of the entire infrared image is transformed, the pixels showing the grayscale distribution range of the ship target are enhanced, and the background brightness of the sea surface flare is effectively suppressed, thereby achieving targeted enhancement of the overall brightness and details of the ship target. In addition, the enhancement method in the embodiment of the present invention has an enhancement effect on the ship target under different imaging conditions.

[0058] like Figure 2 , Figure 3 As shown, an embodiment of the present invention provides a device for enhancing ship target details based on infrared radiation brightness. The device embodiment can be implemented by software, or by hardware or a combination of software and hardware. From the hardware level, Figure 2 As shown in FIG. 1 , a hardware architecture diagram of an electronic device in which a ship target detail enhancement device based on infrared radiation brightness is provided in an embodiment of the present invention is located. Figure 3 In addition to the processor, memory, network interface, and non-volatile memory shown, the electronic device in the embodiment may also include other hardware, such as a forwarding chip responsible for processing messages, etc. Taking software implementation as an example, Figure 3 As shown, as a device in a logical sense, the CPU of the electronic device in which it is located reads the corresponding computer program in the non-volatile memory into the internal memory and runs it.

[0059] like Figure 3 As shown, this embodiment provides a ship target detail enhancement device based on infrared radiation brightness, comprising:

[0060] An acquisition unit 301 is used to acquire an infrared measurement image of a ship target, a distance measurement parameter of the ship target, and a meteorological parameter;

[0061] The query unit 302 is used to query the pre-generated target infrared radiation characteristic distribution query table based on the ranging parameters and meteorological parameters of the ship target, and obtain the radiation brightness of the chimney area of ​​the ship target and the main area of ​​the ship target excluding the chimney area;

[0062] A calculation unit 303 is used to calculate the grayscale distribution of the chimney area of ​​the ship target and the main area of ​​the ship target except the chimney area according to the radiation brightness of the chimney area of ​​the ship target and the main area of ​​the ship target except the chimney area;

[0063] A generating unit 304 is used to generate a grayscale transformation mapping curve based on the grayscale distribution of the chimney area of ​​the ship target and the main body area of ​​the ship target except the chimney area;

[0064] The enhancement unit 305 is used to perform grayscale transformation on each pixel of the infrared measurement image according to the grayscale transformation mapping curve to enhance the details of the ship target.

[0065] In one embodiment of the present invention, in the query unit 302, the infrared radiation feature distribution query table is generated based on the infrared radiation brightness of the target corresponding to different meteorological parameters and different ranging parameters in the target infrared radiation feature library.

[0066] In one embodiment of the present invention, in the calculation unit 303, the grayscale distribution of the chimney area of ​​the ship target and the main body area of ​​the ship target excluding the chimney area are calculated by the following formula:

[0067] DN=(Lb) / k

[0068] Where DN is the gray value of the chimney area of ​​the ship target or the main area of ​​the ship target excluding the chimney area, L is the radiant brightness value of the chimney area of ​​the ship target or the main area of ​​the ship target excluding the chimney area, b is the slope of the linear calibration curve of the measuring equipment, and k is the offset of the linear calibration curve of the measuring equipment.

[0069] In one embodiment of the present invention, when the generating unit 304 generates the grayscale transformation mapping curve based on the grayscale distribution of the chimney area of ​​the ship target and the main body area of ​​the ship target except the chimney area, it is used to perform the following operations:

[0070] Determine the grayscale center and grayscale fluctuation corresponding to each peak of the grayscale transformation mapping curve based on the grayscale distribution of the chimney area of ​​the ship target and the main area of ​​the ship target excluding the chimney area;

[0071] The grayscale transformation mapping curve is generated according to the grayscale center and grayscale fluctuation corresponding to each peak value.

[0072] In one embodiment of the present invention, in the generating unit 304, the grayscale center and grayscale fluctuation corresponding to each peak value of the grayscale transformation mapping curve are determined by the following formula:

[0073] DN i =(DN max +DN min ) / 2

[0074] σ i =(DN max -DN min ) / m

[0075] Where, DN i is the grayscale center corresponding to the i-th peak, i is 1, 2, DN maxDN is the maximum gray value in the chimney area of ​​the ship target or in the main body area of ​​the ship target except the chimney area. min is the minimum gray value in the chimney area of ​​the ship target or the main area of ​​the ship target except the chimney area, σ i is the grayscale fluctuation corresponding to the i-th peak, and m is the grayscale adjustment parameter.

[0076] In one embodiment of the present invention, in the generating unit 304, the grayscale transformation mapping curve has the following relational expression:

[0077]

[0078] Wherein, DN_adjust is the pixel grayscale value before adjustment, DN_normal is the pixel grayscale value after adjustment, DN is the pixel grayscale value of the original infrared measurement image, DN1 is the grayscale center corresponding to the first peak, DN2 is the grayscale center corresponding to the second peak, σ1 is the grayscale fluctuation corresponding to the first peak, and σ2 is the grayscale fluctuation corresponding to the second peak.

[0079] It is to be understood that the structure illustrated in the embodiment of the present invention does not constitute a specific limitation on a device for enhancing ship target details based on infrared radiation brightness. In other embodiments of the present invention, a device for enhancing ship target details based on infrared radiation brightness may include more or fewer components than shown in the figure, or combine some components, or split some components, or arrange the components differently. The components shown in the figure may be implemented in hardware, software, or a combination of software and hardware.

[0080] The information interaction, execution process and other contents between the modules in the above-mentioned device are based on the same concept as the embodiment of the method of the present invention. For the specific contents, please refer to the description in the embodiment of the method of the present invention, and no further description is given here.

[0081] An embodiment of the present invention further provides an electronic device, comprising a memory and a processor, wherein the memory stores a computer program, and when the processor executes the computer program, a method for enhancing ship target details based on infrared radiation brightness in any embodiment of the present invention is implemented.

[0082] An embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the processor executes a method for enhancing ship target details based on infrared radiation brightness in any embodiment of the present invention.

[0083] Specifically, a system or device equipped with a storage medium can be provided, on which software program code that implements the functions of any of the above-mentioned embodiments is stored, and a computer (or CPU or MPU) of the system or device can be enabled to read and execute the program code stored in the storage medium.

[0084] In this case, the program code itself read from the storage medium can realize the function of any one of the above-mentioned embodiments, and thus the program code and the storage medium storing the program code constitute a part of the present invention.

[0085] The storage medium embodiments for providing the program code include a floppy disk, a hard disk, a magneto-optical disk, an optical disk (such as CD-ROM, CD-R, CD-RW, DVD-ROM, DVD-RAM, DVD-RW, DVD+RW), a magnetic tape, a non-volatile memory card, and a ROM. Alternatively, the program code can be downloaded from a server computer by a communication network.

[0086] In addition, it should be clear that the functions of any of the above embodiments can be implemented not only by executing the program code read by the computer, but also by enabling an operating system operating on the computer to complete part or all of the actual operations based on instructions from the program code.

[0087] In addition, it can be understood that the program code read from the storage medium is written to a memory provided in an expansion board inserted into the computer or to a memory provided in an expansion module connected to the computer, and then based on the instructions of the program code, a CPU installed on the expansion board or expansion module is enabled to perform part or all of the actual operations, thereby realizing the functions of any of the above-mentioned embodiments.

[0088] 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 terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical factors in the process, method, article or device including the elements.

[0089] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for enhancing ship target details based on infrared radiation brightness, characterized in that: include: Obtain infrared measurement images of ship targets, ranging parameters of ship targets and meteorological parameters; Based on the ranging parameters and meteorological parameters of the ship target, a query is performed in the pre-generated target infrared radiation characteristic distribution query table to obtain the radiation brightness distribution of the chimney area of ​​the ship target and the main area of ​​the ship target excluding the chimney area; Determine the grayscale distribution of the chimney area of ​​the ship target and the main area of ​​the ship target except the chimney area according to the radiation brightness distribution of the chimney area of ​​the ship target and the main area of ​​the ship target except the chimney area; Generate a grayscale transformation mapping curve based on the grayscale distribution of the chimney area of ​​the ship target and the main area of ​​the ship target except the chimney area; Grayscale transformation is performed on each pixel of the infrared measurement image according to the grayscale transformation mapping curve to enhance the details of the ship target.

2. The method according to claim 1, characterized in that The infrared radiation characteristic distribution query table is generated based on the infrared radiation brightness of the corresponding target under different meteorological parameters and different ranging parameters in the target infrared radiation characteristic library.

3. The method according to claim 1, characterized in that The grayscale distribution of the chimney area of ​​the ship target and the main area of ​​the ship target excluding the chimney area are calculated by the following formula: DN=(Lb) / k Where DN is the gray value of the chimney area of ​​the ship target or the main area of ​​the ship target excluding the chimney area, L is the radiant brightness value of the chimney area of ​​the ship target or the main area of ​​the ship target excluding the chimney area, b is the slope of the linear calibration curve of the measuring equipment, and k is the offset of the linear calibration curve of the measuring equipment.

4. The method according to claim 1, characterized in that: The step of generating a grayscale transformation mapping curve based on the grayscale distribution of the chimney region of the ship target and the main region of the ship target except the chimney region comprises: Determine the grayscale center and grayscale fluctuation corresponding to each peak of the grayscale transformation mapping curve based on the grayscale distribution of the chimney area of ​​the ship target and the main area of ​​the ship target excluding the chimney area; The grayscale transformation mapping curve is generated according to the grayscale center and grayscale fluctuation corresponding to each peak value.

5. The method according to claim 4, characterized in that The grayscale center and grayscale fluctuation corresponding to each peak of the grayscale transformation mapping curve are determined by the following formula: DN i =(DN max +DN min ) / 2 σ i =(DN max -DN min ) / m Where, DN i is the grayscale center corresponding to the i-th peak, i is 1, 2, DN max DN is the maximum gray value in the chimney area of ​​the ship target or in the main body area of ​​the ship target except the chimney area. min is the minimum gray value in the chimney area of ​​the ship target or the main area of ​​the ship target except the chimney area, σ i is the grayscale fluctuation corresponding to the i-th peak, and m is the grayscale adjustment parameter.

6. The method according to claim 4, characterized in that The grayscale transformation mapping curve is as follows: Wherein, DN_adjust is the pixel grayscale value before adjustment, DN_normal is the pixel grayscale value after adjustment, DN is the pixel grayscale value of the original infrared measurement image, DN1 is the grayscale center corresponding to the first peak, DN2 is the grayscale center corresponding to the second peak, σ1 is the grayscale fluctuation corresponding to the first peak, and σ2 is the grayscale fluctuation corresponding to the second peak.

7. A ship target detail enhancement device based on infrared radiation brightness, characterized in that: include: An acquisition unit, used to acquire infrared measurement images of ship targets, ranging parameters of ship targets and meteorological parameters; A query unit is used to query the pre-generated target infrared radiation characteristic distribution query table based on the ranging parameters and meteorological parameters of the ship target, and obtain the radiation brightness of the chimney area of ​​the ship target and the main area of ​​the ship target excluding the chimney area; A calculation unit, configured to calculate the grayscale distribution of the chimney area of ​​the ship target and the main area of ​​the ship target excluding the chimney area according to the radiation brightness distribution of the chimney area of ​​the ship target and the main area of ​​the ship target excluding the chimney area; A generating unit, configured to generate a grayscale transformation mapping curve based on the grayscale distribution of the chimney region of the ship target and the main body region of the ship target except the chimney region; The enhancement unit is used to perform grayscale transformation on each pixel of the infrared measurement image according to the grayscale transformation mapping curve to enhance the details of the ship target.

8. An electronic device, comprising a memory and a processor, wherein the memory stores a computer program, and when the processor executes the computer program, the method according to any one of claims 1 to 6 is implemented.

9. An electronic device, comprising a memory and a processor, wherein the memory stores a computer program, and when the processor executes the computer program, the method according to any one of claims 1 to 6 is implemented.

10. A computer program product, comprising a computer program, wherein when the computer program is executed by a processor, the method according to any one of claims 1 to 6 is implemented.

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