CN216899245U - Staring type hyperspectral tri-light conjugate acquisition and fusion imaging system - Google Patents
Staring type hyperspectral tri-light conjugate acquisition and fusion imaging system Download PDFInfo
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Abstract
The utility model discloses a staring type hyperspectral tri-light conjugate acquisition fusion imaging system which comprises a staring type hyperspectral imaging module, an ultraviolet light imaging unit, a visible light imaging unit and an infrared light imaging unit, wherein two light paths of an object to be detected are formed; in the first optical path of the object to be detected, the visible light imaging unit is in conjugate coupling with the ultraviolet light imaging unit or the infrared light imaging unit; and the staring type hyperspectral imaging module is in conjugate coupling with the infrared light imaging unit or the ultraviolet light imaging unit on the second light path of the object to be detected. The utility model combines spectrum detection and ultraviolet light, visible light and infrared light image detection, and overcomes the defects of low acquisition speed of other equipment, single and separate equipment, large data fusion error and the like. The method has important application value in real-time monitoring of equipment defects in the field of high-voltage power transmission and transformation, identification, classification and analysis of surrounding environment objects and the like.
Description
Technical Field
The utility model belongs to the technical field of optics, and particularly relates to a staring type hyperspectral tri-light conjugate acquisition and fusion imaging system.
Background
Due to the particularity of the production environment and the complexity of the use environment, the power transmission and transformation equipment inevitably generates some surface defects and affects the overall quality of the power transmission and transformation equipment. In the operation process of the power transmission and transformation equipment, under the comprehensive action of factors such as electricity, machinery and chemistry, mechanical damage and temperature rise (infrared characteristics) or corona/arc (ultraviolet characteristics) caused by local electric field change can occur, and the safe and reliable operation of a power transmission system is directly influenced by the operation state of the equipment, so that higher requirements are put forward on the detection of power grid equipment. The power transmission and transformation parts are used as the components of industrial products of power grids, the use quality of the power transmission and transformation parts directly influences the precision level of national life and industrial production, and the defect detection and screening of the industrial parts are more and more indelible.
In the past decades, the defect detection of the power grid equipment is mainly based on single defect feature extraction and identification. With the development of the optical image fusion technology, the three-light fusion is gradually applied to the omnibearing detection of the defects, and richer optical detection information can be provided, so that the detection accuracy is improved. However, the existing infrared temperature measurement, ultraviolet corona detection and visible light imaging means lack hyperspectral data, and are difficult to detect material attributes and the like.
The hyperspectral imaging refers to an imaging mode capable of collecting continuous hundreds of wave bands, and each pixel point on an acquired image corresponds to a spectral curve. The hyperspectral imaging technology integrates the advantages of the imaging technology and the spectrum technology, and the richness of information is greatly improved. However, most of the existing devices combining multi-dimensional detection and spectrum detection are slow in acquisition speed, the devices are separated singly and are difficult to integrate (data fusion errors are large), and in addition, a hyperspectral cube obtained by general hyperspectral atlas imaging is based on grating light splitting and mobile push-broom type, but the cost is high and the application of a three-light fusion monitoring instrument is not facilitated.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems, the utility model aims to provide a staring type hyperspectral three-light conjugate acquisition fusion imaging system, and three-light fusion data and a hyperspectral image can be fused into a hyperspectral three-light fusion image.
A staring type hyperspectral three-light conjugate acquisition fusion imaging system comprises a staring type hyperspectral imaging module, an ultraviolet light imaging unit, a visible light imaging unit and an infrared light imaging unit, and two light paths of an object to be detected are formed; in the first optical path of the object to be detected, a visible light imaging unit is in conjugate coupling with an ultraviolet light imaging unit or an infrared light imaging unit; and a staring type hyperspectral imaging module is in conjugate coupling with the infrared light imaging unit or the ultraviolet light imaging unit on the optical path II of the object to be detected.
The staring type hyperspectral imaging module, the ultraviolet light imaging unit, the visible light imaging unit and the infrared light imaging unit are respectively connected to the data processing unit.
According to the staring type hyperspectral three-light conjugate acquisition fusion imaging system, a first light path of an object to be detected, a visible light imaging unit and an ultraviolet light imaging unit are in conjugate coupling; and a second light path of the object to be detected, namely the staring type hyperspectral imaging module is in conjugate coupling with the infrared light imaging unit.
The staring type hyperspectral three-light conjugate acquisition fusion imaging system comprises a first collimating lens, an ultraviolet-visible light beam splitter, a first imaging lens, a visible light image sensor, a second imaging lens, an ultraviolet light image sensor, a second collimating lens, a visible light-infrared light beam splitter, a third imaging lens, a tunable filter, a spectral image sensor, a fourth imaging lens and an infrared image sensor; the light path of the object to be measured passes through the first collimating lens and the ultraviolet-visible light beam splitter, the visible light part can be transmitted to the first imaging lens, the visible light image sensor is imaged near the focal position of the first imaging lens, the ultraviolet light part is reflected by the ultraviolet-visible light beam splitter and imaged on the ultraviolet light image sensor through the second imaging lens.
According to the gaze-type hyperspectral three-light conjugate acquisition fusion imaging system, a light path second of an object to be measured is changed into parallel light through the second collimating lens, then the parallel light passes through the visible light-infrared light beam splitter, a visible light part transmits through the third imaging lens and the tunable filter, hyperspectral atlas data with the wavelength changing along with time are obtained in the spectral image sensor, and an infrared light part reflects through the visible light-infrared light beam splitter and then images in the infrared image sensor through the fourth imaging lens.
The tunable filter is located at the focal position of the third imaging lens.
The ultraviolet light-visible light beam splitter or the visible light-infrared light beam splitter comprises a beam splitter and a 45-degree reflector.
The utility model has the beneficial effects that:
the utility model combines the spectral detection of the tunable filter and the image detection of ultraviolet light, visible light and infrared light, and overcomes the defects of low acquisition speed of other equipment, single and separate equipment, large data fusion error and the like. The utility model has the triple advantages of speed (acquisition speed: better than 1 second), precision (the multi-mode image fusion precision is ensured by conjugate acquisition on hardware) and multi-band fusion imaging, and the hyperspectral three-optical fusion imaging technology effectively improves the multi-dimension and the integration of detection signals and is integrated with acquisition units of different wave bands in design. The method has important application value in real-time monitoring of equipment defects in the field of high-voltage power transmission and transformation, identification, classification and analysis of surrounding environment objects and the like.
Drawings
FIG. 1 is a schematic diagram of an example of a staring hyperspectral three-light conjugate acquisition fusion imaging system;
in the figure, a first collimating lens 1, an ultraviolet-visible light beam splitter 2, a first imaging lens 3, a visible light high-speed image sensor 4, a second imaging lens 5, an ultraviolet light image sensor 6, a second collimating lens 7, a visible light-infrared light beam splitter 8, a third imaging lens 9, a tunable filter 10, a spectral image sensor 11, a fourth imaging lens 12 and an infrared image sensor 13.
Fig. 2 is a schematic structural diagram of a staring type hyperspectral three-light conjugate acquisition fusion imaging system.
Detailed Description
The utility model is described below with reference to the drawings and specific examples, which are not intended to limit the utility model.
A staring type hyperspectral three-light conjugate acquisition fusion imaging system comprises a staring type hyperspectral imaging module, an ultraviolet light imaging unit, a visible light imaging unit and an infrared light imaging unit, and two light paths of an object to be detected are formed; the modules and imaging units described above may be combined two by two without violating common sense. In the first optical path of the object to be detected, a visible light imaging unit is in conjugate coupling with an ultraviolet light imaging unit or an infrared light imaging unit; and a staring type hyperspectral imaging module is in conjugate coupling with the infrared light imaging unit or the ultraviolet light imaging unit on the optical path II of the object to be detected. In addition, it is obvious to those skilled in the art that a light splitting, conjugate light path module or other optical components may be included in the light path.
The staring type hyperspectral imaging module, the ultraviolet light imaging unit, the visible light imaging unit and the infrared light imaging unit are respectively connected with the data processing unit. The connection can be a wireless or wired connection, and the data processing unit can be integrated in a staring type hyperspectral three-light conjugate acquisition fusion imaging system or located in a remote server.
According to the staring type hyperspectral three-light conjugate acquisition fusion imaging system, a first light path of an object to be detected, a visible light imaging unit and an ultraviolet light imaging unit are in conjugate coupling; and a second light path of the object to be detected, namely the staring type hyperspectral imaging module is in conjugate coupling with the infrared light imaging unit.
As shown in fig. 1 and fig. 2, the gaze-type hyperspectral three-light conjugate acquisition and fusion imaging system includes a first collimating lens 1, an ultraviolet-visible light beam splitter 2, a first imaging lens 3, a visible light image sensor 4, a second imaging lens 5, an ultraviolet light image sensor 6, a second collimating lens 7, a visible light-infrared light beam splitter 8, a third imaging lens 9, a tunable filter 10, a spectral image sensor 11, a fourth imaging lens 12, and an infrared image sensor 13; the light path of the object to be measured passes through the first collimating lens 1 and the ultraviolet-visible light beam splitter 2, so that the visible light part can be transmitted to the first imaging lens 3, the visible light part is imaged on the visible light image sensor 4 near the focal point position of the first imaging lens 3, the ultraviolet light part is reflected by the ultraviolet-visible light beam splitter 2, and the ultraviolet light part is imaged on the ultraviolet light image sensor 6 through the second imaging lens 5.
According to the gaze-fixation type hyperspectral three-light conjugate acquisition fusion imaging system, a light path second of an object to be measured is changed into parallel light through the second collimating lens 7 and then passes through the visible light-infrared light beam splitter 8, a visible light part transmits through the third imaging lens 9 and the tunable filter 10, hyperspectral atlas data with wavelength changing along with time are obtained in the spectral image sensor 11, and an infrared light part reflects through the visible light-infrared light beam splitter 8 and then is imaged in the infrared image sensor 13 through the fourth imaging lens 12. The spectral image sensor 11 can adopt a common gray-scale camera image sensor and sensitively works in a spectral detection range.
The tunable filter 10 is located at or near the focal point of the third imaging lens 9, which can greatly reduce the area of the tunable filter, reduce the cost (because the large-area tunable filter is difficult to manufacture and has high cost), and reduce the occupied space of the system.
The ultraviolet light-visible light beam splitter 2 or the visible light-infrared light beam splitter 8 comprises a beam splitter and a 45-degree reflector, and an imaging module or unit convenient for conjugate collection is placed in parallel.
Imaging of ultraviolet light, visible light and infrared light can be used for infrared temperature measurement, visible light high-speed image analysis and ultraviolet imaging detection, and hyperspectral data is acquired by combining a tunable filter spectrum scanning module to monitor defects of power equipment and identification and classification of surrounding environment objects, such as heating discharge, gradual aging and monitoring of foreign matters (such as transparent plastic cloth foreign matters) of insulating parts and high-voltage end fittings on transmission towers. The three-light imaging data and the spectrum data can be fused into a hyperspectral three-light fusion image.
The image sensor for collecting the scanning spectrum of the tunable filter, the ultraviolet light image sensor, the visible light high-speed imaging image sensor and the infrared thermal imaging image sensor are integrated in one device, hyperspectral atlas data and three-light imaging data are fused through a conjugate light path to obtain visual fusion data, so that the device can be observed on the spot conveniently, and no fusion error exists.
Because the light of the two light paths is the light emitted by the same object, the image sensor collects the homologous images, and the data has high fusion. The information processing unit can calculate the multi-dimensional data of the object to be measured according to the fusion relationship between the images of the ultraviolet light, the visible light and the infrared light and the spectral image acquired by the spectral image sensor.
The spectrum detection is realized by continuously changing the center wavelength of transmission through a tunable filter plate. The tunable filter has short modulation time and can realize rapid spectrum morphology detection by matching with high-speed projection.
The detection of ultraviolet light, visible light and infrared light is integrated in the same equipment, the tunable filter spectrum scanning module is arranged on the same light path and is conjugated with the three-light imaging, and the sizes of all optical sleeves and image sensor interfaces in the light path are uniform.
The weight of hardware and the cost of data acquisition can be reduced through the conjugate acquisition and fusion, and the software processing workload of feature level fusion of different data can be greatly reduced through the fusion of a plurality of image sensors, so that the data fusion precision is higher. The hyperspectral image and the image obtained by the common image sensor can be simply fused by software through image characteristics, and a 3 rd light splitting conjugate light path module can be introduced to form image acquisition fusion with accurately matched space points on 2 image sensor hardware, so that the image of ultraviolet light, visible light and infrared light and the hyperspectral image are accurately fused into high-dimensional data of an object to be detected. The spectrum detection in the staring type hyperspectral imaging module is realized by continuously changing the transmitted central wavelength through changing the voltage loaded on a liquid crystal box by a tunable filter.
Application scenarios: the hyperspectral three-light conjugate acquisition fusion imaging monitoring instrument can monitor facility defects near a transformer substation and identification and classification of surrounding environment objects in real time, such as heating discharge and gradual aging of an insulating part and a high-voltage end hardware on a transmission tower, and monitoring of foreign matters (such as transparent plastic cloth foreign matters) and high growth of forests around the transmission line.
The embodiments in the above description can be further combined or replaced, and the embodiments are only described as preferred examples of the present invention, and do not limit the concept and scope of the present invention, and various changes and modifications made to the technical solution of the present invention by those skilled in the art without departing from the design concept of the present invention belong to the protection scope of the present invention. The scope of the utility model is given by the appended claims and any equivalents thereof.
Claims (7)
1. A staring type hyperspectral three-light conjugate acquisition and fusion imaging system is characterized in that: the device comprises a staring type hyperspectral imaging module, an ultraviolet light imaging unit, a visible light imaging unit and an infrared light imaging unit, and two light paths of an object to be detected are formed; in the first optical path of the object to be detected, a visible light imaging unit is in conjugate coupling with an ultraviolet light imaging unit or an infrared light imaging unit; and a staring type hyperspectral imaging module is in conjugate coupling with the infrared light imaging unit or the ultraviolet light imaging unit on the optical path II of the object to be detected.
2. The gaze-type hyperspectral three-light conjugate acquisition fusion imaging system according to claim 1, wherein: the staring type hyperspectral imaging module, the ultraviolet light imaging unit, the visible light imaging unit and the infrared light imaging unit are respectively connected with the data processing unit.
3. The gaze-type hyperspectral three-light conjugate acquisition fusion imaging system according to claim 1, wherein: in the first optical path of the object to be detected, a visible light imaging unit is coupled with an ultraviolet light imaging unit in a conjugate mode; and a second light path of the object to be detected, namely the staring type hyperspectral imaging module is in conjugate coupling with the infrared light imaging unit.
4. A staring hyperspectral three-light conjugate acquisition fusion imaging system according to claim 3, wherein: the device comprises a first collimating lens (1), an ultraviolet-visible light beam splitter (2), a first imaging lens (3), a visible light image sensor (4), a second imaging lens (5), an ultraviolet light image sensor (6), a second collimating lens (7), a visible light-infrared light beam splitter (8), a third imaging lens (9), a tunable filter (10), a spectral image sensor (11), a fourth imaging lens (12) and an infrared image sensor (13); the light path of the object to be measured passes through the first collimating lens (1) and the ultraviolet-visible light beam splitter (2), the visible light part can be transmitted to the first imaging lens (3), the visible light part is imaged on the visible light image sensor (4) near the focal point position of the first imaging lens (3), the ultraviolet light part is reflected by the ultraviolet-visible light beam splitter (2), and the ultraviolet light part is imaged on the ultraviolet light image sensor (6) through the second imaging lens (5).
5. The gaze-type hyperspectral three-light conjugate acquisition fusion imaging system according to claim 4, wherein: the second light path of the object to be measured is changed into parallel light through the second collimating lens (7), then the parallel light passes through the visible light-infrared light beam splitter (8), the visible light part is transmitted through the third imaging lens (9) and the tunable filter (10), hyperspectral atlas data with the wavelength changing along with time are obtained in the spectral image sensor (11), and the infrared light part is reflected through the visible light-infrared light beam splitter (8) and is imaged in the infrared image sensor (13) through the fourth imaging lens (12).
6. A staring type hyperspectral three-light conjugate acquisition fusion imaging system according to claim 4 or 5, wherein: the tunable filter plate (10) is positioned at the focal position of the third imaging lens (9).
7. The gaze-type hyperspectral three-light conjugate acquisition fusion imaging system according to claim 4, wherein: the ultraviolet light-visible light beam splitter (2) or the visible light-infrared light beam splitter (8) comprises a beam splitter and a 45-degree reflector.
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