CN113612940A - Night vision infrared thermal imager - Google Patents
Night vision infrared thermal imager Download PDFInfo
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- CN113612940A CN113612940A CN202110773078.7A CN202110773078A CN113612940A CN 113612940 A CN113612940 A CN 113612940A CN 202110773078 A CN202110773078 A CN 202110773078A CN 113612940 A CN113612940 A CN 113612940A
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- 230000004297 night vision Effects 0.000 title claims abstract description 39
- 238000001931 thermography Methods 0.000 claims abstract description 23
- 230000005855 radiation Effects 0.000 claims description 40
- 238000004891 communication Methods 0.000 claims description 12
- 238000001514 detection method Methods 0.000 claims description 12
- 238000001914 filtration Methods 0.000 claims description 6
- 230000003321 amplification Effects 0.000 claims description 5
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 5
- 230000007613 environmental effect Effects 0.000 claims description 4
- 230000003993 interaction Effects 0.000 claims description 3
- 238000003384 imaging method Methods 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 abstract description 3
- 230000007547 defect Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 abstract description 2
- 238000003331 infrared imaging Methods 0.000 abstract 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/30—Transforming light or analogous information into electric information
- H04N5/33—Transforming infrared radiation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/95—Computational photography systems, e.g. light-field imaging systems
- H04N23/951—Computational photography systems, e.g. light-field imaging systems by using two or more images to influence resolution, frame rate or aspect ratio
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- Theoretical Computer Science (AREA)
- Radiation Pyrometers (AREA)
- Studio Devices (AREA)
Abstract
The invention discloses a night vision infrared thermal imager, which is used for acquiring night images and comprises a thermal imaging module, a first infrared imaging module and a second infrared imaging module, wherein the thermal imaging module is used for passively acquiring a detected object to form first infrared information; and the night vision module is used for actively collecting the detected object to form second infrared information. The night vision infrared thermal imager disclosed by the invention carries out night imaging on a detected object in a mode of combining the night vision module and the thermal imaging module, overcomes the defect of imaging at night by each module in the background technology, has different color discrimination at different temperatures, has detail sense and pertinence, and has the advantages of good imaging effect, high definition, convenience in observation and the like.
Description
Technical Field
The invention belongs to the technical field of night vision devices, and particularly relates to a night vision infrared thermal imager.
Background
The infrared night vision device is a military night vision device utilizing a photoelectric conversion technology. It is divided into two types, active and passive: the former uses an infrared searchlight to irradiate a target and receives reflected infrared radiation to form an image; the latter do not emit infrared radiation and rely on the infrared radiation of the target itself to form a "thermal image", so it is also known as a "thermal imager".
However, although the image observed by the active night vision device has the details in place, the color tone is single, no pertinence is provided, the difference between the detected objects cannot be distinguished, and for the passive thermal imaging device, although the different temperatures can be represented by the colors of the image, the picture is rough, and the detail sense is insufficient.
Therefore, the above problems are further improved.
Disclosure of Invention
The invention mainly aims to provide a night vision infrared thermal imager, which carries out night imaging on a detected object in a mode of combining a night vision module and a thermal imaging module, overcomes the defect of imaging at night by each module in the background technology, has different color discrimination degrees at different temperatures, has detail sense and pertinence, and has the advantages of good imaging effect, high definition, convenience in observation and the like.
In order to achieve the above object, the present invention discloses a night vision infrared thermal imager for collecting night images, comprising:
the thermal imaging module is used for passively collecting the detected object to form first infrared information;
the night vision module is used for actively collecting the detected object to form second infrared information;
the processing and analyzing module is used for respectively receiving the first infrared information sent by the thermal imaging module and the second infrared information sent by the night vision module and fusing the first infrared information and the second infrared information;
the night vision module and the thermal imaging module are respectively in information interaction with the processing and analyzing module through the communication module.
As a further preferred technical solution of the above technical solution, the thermal imaging module includes an infrared detector, a first image processor, and a first infrared processor, wherein:
the processing and analyzing module sends a first detection instruction to the thermal imaging module through the communication module, the first infrared processor triggers the infrared detector to detect after receiving the first detection instruction so as to receive the infrared radiation emitted by the detected object, and the infrared radiation is transmitted to the first infrared processor after being processed by the first image processor so as to judge whether the currently received infrared radiation is the infrared radiation emitted by the detected object;
if the received infrared radiation is emitted by the detected object, the infrared radiation is judged to be first infrared information, and the first infrared information is transmitted to the processing and analyzing module through the communication module;
if at least one part of the received infrared radiation is not emitted by the detected object, the detected object is subjected to environmental treatment and then is detected again through the infrared detector until all the received infrared radiation is ensured to be emitted by the detected object.
As a further preferred technical solution of the above technical solution, before the first infrared processor analyzes and judges the current infrared radiation, the first image processor performs first equalization calculation and second equalization calculation in addition to amplification and filtering of the infrared radiation signal, wherein:
the first equalization calculation is to perform equalization calculation on the infrared detector, balance the characteristics of the infrared detector and compensate errors brought by the infrared detector;
the second equalization calculation is equalization calculation of infrared radiation characteristics, infrared radiation with different wavelengths has different signal intensities, and errors caused by different wavelengths are compensated.
As a further preferable technical solution of the above technical solution, the night vision module includes an infrared transmitter, an infrared receiver, a second image processor, and a second infrared processor, wherein:
the processing and analyzing module sends a second detection instruction to the night vision module through the communication module after receiving the first infrared information, the second infrared processor triggers the infrared emitter to perform infrared irradiation on the detected object after receiving the second detection instruction, and the infrared receiver receives infrared rays reflected by the detected object and transmits the infrared rays to the second infrared processor after processing the infrared rays by the second image processor so as to form second infrared information.
As a further preferable technical solution of the above technical solution, before the second infrared processor transmits the reflected infrared rays to the processing and analyzing module, the second image processor performs first equalization calculation and second equalization calculation in addition to amplification and filtering of the signal of the reflected infrared rays, wherein:
the first equalization calculation is to perform equalization calculation on the infrared receiver, balance the characteristics of the infrared receiver and compensate errors brought by the infrared receiver;
the second time of equalization calculation is equalization calculation by reflected infrared characteristics, infrared rays with different wavelengths have different signal intensities, and errors caused by different wavelengths are compensated.
As a further preferable technical solution of the above technical solution, the processing and analyzing module fuses the first infrared information and the second infrared information, and the night vision module and the thermal imaging module have equal distances to the detected object, so as to ensure that the first infrared information and the second infrared information of the detected object are overlapped and fused.
Detailed Description
The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art. The basic principles of the invention, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the invention.
In the preferred embodiment of the present invention, those skilled in the art should note that the present invention relates to infrared processors. An infrared detector, an infrared receiver, and the like can be regarded as the prior art.
Preferred embodiments.
The invention discloses a night vision infrared thermal imager, which is used for collecting night images and comprises:
the thermal imaging module is used for passively collecting the detected object to form first infrared information;
the night vision module is used for actively collecting the detected object to form second infrared information;
the processing and analyzing module is used for respectively receiving the first infrared information sent by the thermal imaging module and the second infrared information sent by the night vision module and fusing the first infrared information and the second infrared information;
the night vision module and the thermal imaging module are respectively in information interaction with the processing and analyzing module through the communication module.
Specifically, the thermal imaging module comprises an infrared detector, a first image processor and a first infrared processor, wherein:
the processing and analyzing module sends a first detection instruction to the thermal imaging module through the communication module, the first infrared processor triggers the infrared detector to detect after receiving the first detection instruction so as to receive the infrared radiation emitted by the detected object, and the infrared radiation is transmitted to the first infrared processor after being processed by the first image processor so as to judge whether the currently received infrared radiation is the infrared radiation emitted by the detected object;
if the received infrared radiation is emitted by the detected object, the infrared radiation is judged to be first infrared information, and the first infrared information is transmitted to the processing and analyzing module through the communication module;
if at least one part of the received infrared radiation is not emitted by the detected object, the detected object is subjected to environmental treatment and then detected by the infrared detector again until all the received infrared radiation is ensured to be emitted by the detected object (for example, environmental light and other heat radiation).
More specifically, before the first infrared processor analyzes and judges the current infrared radiation, the first image processor performs first equalization calculation and second equalization calculation besides amplifying and filtering the infrared radiation signal, wherein:
the first equalization calculation is to perform equalization calculation on the infrared detector, balance the characteristics of the infrared detector and compensate errors brought by the infrared detector;
the second equalization calculation is equalization calculation of infrared radiation characteristics, infrared radiation with different wavelengths has different signal intensities, and errors caused by different wavelengths are compensated.
Further, the night vision module includes an infrared transmitter, an infrared receiver, a second image processor, and a second infrared processor, wherein:
the processing and analyzing module sends a second detection instruction to the night vision module through the communication module after receiving the first infrared information, the second infrared processor triggers the infrared emitter to perform infrared irradiation on the detected object after receiving the second detection instruction, and the infrared receiver receives infrared rays reflected by the detected object and transmits the infrared rays to the second infrared processor after processing the infrared rays by the second image processor so as to form second infrared information.
Further, before the second infrared processor transmits the reflected infrared rays to the processing and analyzing module, the second image processor performs a first equalization calculation and a second equalization calculation in addition to the amplification and filtering of the signal of the reflected infrared rays, wherein:
the first equalization calculation is to perform equalization calculation on the infrared receiver, balance the characteristics of the infrared receiver and compensate errors brought by the infrared receiver;
the second time of equalization calculation is equalization calculation by reflected infrared characteristics, infrared rays with different wavelengths have different signal intensities, and errors caused by different wavelengths are compensated.
Preferably, the processing and analyzing module fuses the first infrared information and the second infrared information, and the night vision module and the thermal imaging module have equal distances to the detected object, so as to ensure that the first infrared information and the second infrared information of the detected object are fused in an overlapping manner.
It is worth mentioning that the present patent application relates to an infrared processor. Technical features such as an infrared detector and an infrared receiver should be regarded as the prior art, and specific structures, operation principles, control modes and spatial arrangement modes which may be involved of the technical features are conventional in the art, and should not be regarded as the invention points of the present patent, and the present patent is not further specifically described in detail.
It will be apparent to those skilled in the art that modifications and equivalents may be made in the embodiments and/or portions thereof without departing from the spirit and scope of the present invention.
Claims (6)
1. A night vision infrared thermal imager for collecting night images, comprising:
the thermal imaging module is used for passively collecting the detected object to form first infrared information;
the night vision module is used for actively collecting the detected object to form second infrared information;
the processing and analyzing module is used for respectively receiving the first infrared information sent by the thermal imaging module and the second infrared information sent by the night vision module and fusing the first infrared information and the second infrared information;
the night vision module and the thermal imaging module are respectively in information interaction with the processing and analyzing module through the communication module.
2. The night vision infrared thermal imager of claim 1 wherein the thermal imaging module includes an infrared detector, a first image processor and a first infrared processor, wherein:
the processing and analyzing module sends a first detection instruction to the thermal imaging module through the communication module, the first infrared processor triggers the infrared detector to detect after receiving the first detection instruction so as to receive the infrared radiation emitted by the detected object, and the infrared radiation is transmitted to the first infrared processor after being processed by the first image processor so as to judge whether the currently received infrared radiation is the infrared radiation emitted by the detected object;
if the received infrared radiation is emitted by the detected object, the infrared radiation is judged to be first infrared information, and the first infrared information is transmitted to the processing and analyzing module through the communication module;
if at least one part of the received infrared radiation is not emitted by the detected object, the detected object is subjected to environmental treatment and then is detected again through the infrared detector until all the received infrared radiation is ensured to be emitted by the detected object.
3. The night vision infrared thermal imager of claim 2, wherein the first image processor performs a first equalization solution and a second equalization solution in addition to the amplification and filtering of the infrared radiation signal before analyzing and judging the current infrared radiation, wherein:
the first equalization calculation is to perform equalization calculation on the infrared detector, balance the characteristics of the infrared detector and compensate errors brought by the infrared detector;
the second equalization calculation is equalization calculation of infrared radiation characteristics, infrared radiation with different wavelengths has different signal intensities, and errors caused by different wavelengths are compensated.
4. The night vision infrared thermal imager of claim 3 wherein the night vision module includes an infrared transmitter, an infrared receiver, a second image processor and a second infrared processor, wherein:
the processing and analyzing module sends a second detection instruction to the night vision module through the communication module after receiving the first infrared information, the second infrared processor triggers the infrared emitter to perform infrared irradiation on the detected object after receiving the second detection instruction, and the infrared receiver receives infrared rays reflected by the detected object and transmits the infrared rays to the second infrared processor after processing the infrared rays by the second image processor so as to form second infrared information.
5. The night vision infrared thermal imager of claim 4, wherein the second infrared processor performs a first equalization solution and a second equalization solution in addition to the amplification and filtering of the reflected infrared signal before transmitting the reflected infrared signal to the processing and analyzing module, wherein:
the first equalization calculation is to perform equalization calculation on the infrared receiver, balance the characteristics of the infrared receiver and compensate errors brought by the infrared receiver;
the second time of equalization calculation is equalization calculation by reflected infrared characteristics, infrared rays with different wavelengths have different signal intensities, and errors caused by different wavelengths are compensated.
6. The night vision infrared thermal imager of claim 5, wherein the processing and analyzing module fuses the first infrared information and the second infrared information, and the night vision module and the thermal imaging module are located at the same distance from the detected object to ensure that the first infrared information and the second infrared information of the detected object are fused in an overlapping manner.
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