Imaging device and imaging method based on multi-dimensional optical perception

Abstract

The invention relates to the technical field of optical imaging, in particular to imaging equipment and an imaging method based on multi-dimensional optical perception, the equipment comprises a lens, a rotary dimming mechanism, a fast reflecting mirror, a broadband visible light high-speed camera and a controller, and a turntable of the rotary dimming mechanism is provided with an optical filter and polaroids with different polarization angles; a target light source enters from the lens, passes through the rotary dimming mechanism and is reflected to the broadband visible light high-speed camera by the fast reflecting mirror; the controller is in communication connection with the rotary dimming mechanism, the fast reflecting mirror and the broadband visible light high-speed camera, the controller cooperatively controls the rotary dimming mechanism, the fast reflecting mirror and the broadband visible light high-speed camera, the inherent space registration error of a multi-aperture system is fundamentally eliminated, and meanwhile, the equipment is compact in overall structure, low in cost and high in practicability. Miniaturization, light weight and low power consumption are realized, and microsecond-level cooperative control of the fast reflecting mirror, the rotary dimming mechanism and the broadband visible light high-speed camera is realized through dual-path FPGA cooperative processing.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of optical imaging technology, and in particular to an imaging device and method based on multi-dimensional optical perception. BACKGROUND

[0002] Traditional optical imaging technology is mainly based on intensity information, and the detection, identification and recognition ability of the target will decrease sharply in complex environments (such as fog, smoke, underwater, complex background camouflage). Multi-dimensional optical perception technology, i.e. obtaining the spectral information, polarization information, phase information, etc. of the target at the same time, provides a new solution path to improve the target recognition ability in complex environments.

[0003] Most of the existing multi-dimensional optical perception systems are multi-aperture spectral systems. Such systems use multiple independent imaging sensors, each of which is configured with different filters, polarizers or spectral prisms in front of each sensor to receive different physical quantities of optical information. The superposition of multiple lenses, sensors and independent electronic systems results in a huge volume, weight and power consumption of the overall system, making it difficult to deploy on unmanned aerial vehicles, handheld devices or satellite platforms with strict load requirements, greatly limiting its application scenarios. At the same time, the multi-sensor multi-aperture has registration errors, and it is difficult to ensure that the optical path is parallel, resulting in a deviation in the collection of multiple physical quantities. SUMMARY

[0004] Therefore, the technical problem to be solved by the present application is to overcome the defects in the prior art, thereby providing an imaging device and method based on multi-dimensional optical perception.

[0005] An imaging device based on multi-dimensional optical perception, comprising: a lens, a rotary light adjusting mechanism, a quick return mirror, a wide-band visible light high-speed camera and a controller, a plurality of filters and polarizers with different polarization angles are arranged on the rotating disc of the rotary light adjusting mechanism; The target light source is incident from the lens, passes through the rotary light adjusting mechanism, and is reflected by the quick return mirror to the wide-band visible light high-speed camera; The controller is in communication connection with the rotary light adjusting mechanism, the quick return mirror and the wide-band visible light high-speed camera, and the controller cooperatively controls the rotary light adjusting mechanism, the quick return mirror and the wide-band visible light high-speed camera.

[0006] Further, the controller is specifically an FPGA, and the dual-channel FPGA performs the following operation steps in parallel, one channel drives the quick return mirror to reflect and performs image shift compensation, and the other channel predicts the lead trigger time required by the wide-band visible light high-speed camera based on the data of the rotary light adjusting mechanism, the quick return mirror and the wide-band visible light high-speed camera Δt Lead trigger time Δt satisfies the formula: Δt = t FSM响应 + t ​camera延迟 - t 转盘到位 ； t 转盘到位 Time required for the rotating light adjustment mechanism to position the rotating disc; t FSM响应 Response time of the fast mirror; t camera延迟 Delay time of the wide-band visible light high-speed camera.

[0007] Further, the fast mirror image movement compensation needs to meet the formula: θ FSM = f • v 目标 •t 曝光 •π•180 ; θ FSM Angle required for the fast mirror image movement compensation; f Focal length of the lens; t 曝光 Exposure time of the visible light high-speed camera; v 目标 Speed of the target light source.

[0008] Further, the multi-dimensional optical perception-based imaging device further comprises an adaptive optical module; The adaptive optical module comprises a deformable mirror, a beam splitter and a wavefront sensor, the deformable mirror and the beam splitter are arranged in sequence between the rotating light adjustment mechanism and the fast mirror, and the wavefront sensor is arranged on the light splitting path of the beam splitter. The target light source enters from the lens, then passes through the rotating light adjustment mechanism and the deformable mirror in sequence, the beam splitter splits the target light source into two beams, one of which is received by the wavefront sensor, and the other is reflected by the fast mirror to the wide-band visible light high-speed camera.

[0009] Further, the wavefront sensor and the deformable mirror are both in communication connection with the controller, the wavefront sensor obtains wavefront distortion information, and the controller generates a control instruction based on the wavefront distortion information to make the deformable mirror reshape the wavefront.

[0010] Further, the rotating light adjustment mechanism further comprises a fixed plate, a motor and a potentiometer; The motor is fixedly connected to the fixed plate, the output end of the motor is connected to the rotating disc, the fixed plate is further provided with a potentiometer, the output end of the potentiometer is connected with a first gear, the rotating disc is provided with a second gear engaged with the first gear, and the motor and the potentiometer are both in communication connection with the controller.

[0011] Further, the fast mirror comprises a control driving circuit, an azimuth voice coil motor group, a pitch voice coil motor group, an angle measuring sensor, a flexible support assembly and a mirror; The azimuth voice coil motor group, the pitch voice coil motor group, the flexible support assembly and the mirror are sequentially connected; the angle measuring sensor measures the deflection angle of the mirror and transmits the measurement data to the controller, the controller generates a control signal based on the measurement data and transmits the control signal to the control driving circuit, and the control driving circuit controls the azimuth voice coil motor group and the pitch voice coil motor group to correspondingly deflect in the azimuth direction and the pitch direction.

[0012] Further, the filter comprises a near-infrared waveband filter with a wavelength of 800nm-1700nm and a visible light waveband filter with a wavelength of 400nm-800nm. The polarization angles of the polarizer include 0°, 45°, 90° and 135°.

[0013] The present application also comprises an imaging method based on the above-mentioned multi-dimensional optical perception-based imaging device, which is specifically as follows: the target light source is shot from the lens, then sequentially passes through the rotary light adjusting mechanism and the deformable mirror, the beam splitter divides the target light source into two beams, one of which is received by the wavefront sensor, the wavefront sensor obtains wavefront distortion information and sends it to the FPGA, the FPGA generates a control instruction through a reconstruction algorithm, and the deformable mirror corrects the distortion based on the control instruction; the other beam is reflected to the wide waveband visible light high-speed camera by the fast mirror; the controller controls the motor to rotate the turntable to switch different filters and polarizers into the light path; two-way FPGA is used for parallel control, one controls the fast mirror to compensate for image shift, and the other simultaneously predicts the turntable arrival time to trigger the wide waveband visible light high-speed camera exposure in advance; the wide waveband visible light high-speed camera synchronously collects the optical signals modulated by the filter and the polarizer, and outputs a multi-dimensional information pulse stream containing polarization state and spectral characteristics.

[0014] Further, during the exposure of the wide waveband visible light high-speed camera, the controller controls the motor of the rotary light adjusting mechanism to keep the turntable rotating at a constant speed.

[0015] The technical scheme of the present application has the following advantages: 1. The present application integrates the rotary light adjusting mechanism, the fast mirror and the wide waveband visible light high-speed camera in a single aperture co-light path, and cooperatively controls them by the controller, which fundamentally eliminates the inherent spatial registration error of the multi-aperture system, and at the same time, the overall structure of the device is compact, realizing miniaturization, light weight and low power consumption.

[0016] 2.The application adopts FPGA as a controller, and realizes microsecond-level cooperative control of the fast mirror, the rotary light adjusting mechanism and the wide-band visible light high-speed camera through double-channel FPGA cooperative processing, one channel drives the fast mirror to compensate for image shift, and the other channel predicts the advance trigger time and triggers the advance trigger time exposure in advance, so that the problem of time delay caused by serial control does not occur.

[0017] 3.The adaptive optics module composed of the deformable mirror, the beam splitter and the wavefront sensor enables the imaging device to have active aberration correction capability in a complex dynamic environment, can perceive and correct the wavefront distortion caused by atmospheric turbulence and other factors in real time, so that the system can still obtain a high-resolution image close to the diffraction limit under extreme conditions such as strong scattering and weak light, and significantly improves the environmental adaptability and imaging clarity of the device.

[0018] 4.The controller controls the rotating disc to be in a uniform motion state during the exposure of the wide-band visible light high-speed camera, avoids the vibration caused by the acceleration and deceleration of the rotating disc, and sets an inertial sensor (IMU) on the base of the fast mirror, so that the controller realizes the feedforward control of the fast mirror by Kalman filtering combined with the IMU data and the image flow; this design can effectively prevent image blur and ensure that a clear image can still be obtained in a dynamic environment. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or the prior art description. Obviously, the drawings described below are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0020] Figure 1 FIG. 1 is a structural schematic diagram of the imaging device based on multi-dimensional optical perception; Figure 2 FIG. 2 is a structural schematic diagram of the rotary light adjusting mechanism; Figure 3 FIG. 3 is a schematic diagram of the wavefront reshaping of the deformable mirror.

[0021] Explanation of reference signs: 1-lens; 2-rotary light adjusting mechanism; 3-deformable mirror; 4-beam splitter; 5-fast mirror; 6-wide-band visible light high-speed camera; 7-wavefront sensor; 8-controller; 9-base; 21-polarizer; 22-rotating disc; 23-fixed plate; 24-motor; 25-potentiometer. DETAILED DESCRIPTION

[0022] The technical solutions of the present application will be described clearly and completely below in conjunction with the drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0023] In the description of the present application, it should be noted that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0024] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0025] In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0026] Please refer to Figures 1 to 3 An imaging device based on multi-dimensional optical perception, comprising: a lens 1, a rotating light adjusting mechanism 2, a quick return mirror 5, a wide-band visible light high-speed camera 6 and a controller 8, the working waveband of the wide-band visible light high-speed camera 6 is 400-1700nm, the frame frequency can reach above 260FPS, mainly for detecting visible light, visible light polarization and near-infrared waveband, can realize multi-physical quantity collaborative extraction, can synchronously output the pulse stream of polarization state and spectral characteristics.

[0027] The rotary dimming mechanism 2 has a turntable 22 equipped with multiple filters and polarizers 21 with different polarization angles. The filters include near-infrared filters with wavelengths of 800nm ​​to 1700nm and visible light filters with wavelengths of 400nm to 800nm. The polarization angles of the polarizers 21 include 0°, 45°, 90° and 135°. The filters and polarizers 21 are evenly arranged on the turntable 22, so that the entire device can achieve coordinated imaging of visible light, near-infrared light and polarization.

[0028] The target light source enters from the lens 1, passes through the rotary dimming mechanism 2, and is reflected by the fast-reflecting mirror 5 to the broadband visible light high-speed camera 6; The controller 8 is communicatively connected to the rotary dimming mechanism 2, the fast-reflecting mirror 5, and the wideband visible light high-speed camera 6. The controller 8 coordinates the control of the rotary dimming mechanism 2, the fast-reflecting mirror 5, and the wideband visible light high-speed camera 6.

[0029] Please continue reading. Figure 1 and Figure 2 The rotary dimming mechanism 2 also includes a fixed plate 23, a motor 24, and a potentiometer 25; The motor 24 is fixedly connected to the fixed plate 23. The output end of the motor 24 is connected to the turntable 22. A potentiometer 25 is also provided on the fixed plate 23. A first gear is connected to the output end of the potentiometer 25. A second gear is provided on the turntable 22 and meshes with the first gear. The rotation ratio of the first gear and the second gear is 1:1, that is, the number of teeth of the first gear and the second gear are equal. The potentiometer 25 is connected to the turntable 22 through the two gears with equal number of teeth. The motor 24 is a stepper motor. The motor 24 drives the turntable 22 to rotate. The potentiometer 25 measures the rotation angle of the turntable 22 to achieve precise insertion of the polarizer 21 and the filter into the optical path. The motor 24 realizes the insertion and exit of the polarizer 21 and the filter, thereby realizing the function of multispectral and polarization imaging. The motor 24 and the potentiometer 25 are both connected to the controller 8. The potentiometer 25 sends the measured data to the controller 8. The controller 8 sends start / stop commands or speed control commands to the motor 24.

[0030] The imaging device based on multidimensional optical sensing also includes an adaptive optics module; The adaptive optics module includes a deformable mirror 3, a beam splitter 4, and a wavefront sensor 7. The deformable mirror 3 and the beam splitter 4 are arranged sequentially between the rotary dimming mechanism 2 and the fast-reflecting mirror 5. The wavefront sensor 7 is arranged in the beam splitting path of the beam splitter 4. This allows the target light source to enter from the lens 1 and then pass sequentially through the rotary dimming mechanism 2 and the deformable mirror 3. The beam splitter 4 splits the target light source into two beams. One beam is received by the wavefront sensor 7, and the other beam is reflected by the fast-reflecting mirror 5 to the broadband visible light high-speed camera 6.

[0031] The wavefront sensor 7 and the deformable mirror 3 are in communication connection with the controller 8, the wavefront sensor 7 acquires wavefront distortion information, and the controller 8 generates a control instruction based on the wavefront distortion information to make the deformable mirror 3 reshape the wavefront.

[0032] The fast mirror 5 includes a control driving circuit, an azimuth voice coil motor group, a pitch voice coil motor group, an angle measuring sensor, a flexible support assembly and a reflecting mirror; the azimuth voice coil motor group, the pitch voice coil motor group, the flexible support assembly and the reflecting mirror are connected in sequence; the azimuth voice coil motor group and the pitch voice coil motor group drive the reflecting mirror to deflect in the azimuth direction and the pitch direction, the flexible support assembly is responsible for supporting the reflecting mirror and simultaneously provides a low-friction deflection structure for the reflecting mirror; the angle measuring sensor measures the deflection angle of the reflecting mirror and transmits the measurement data to the controller 8, and the controller 8 generates a control signal based on the measurement data and transmits it to the control driving circuit, which controls the azimuth voice coil motor group and the pitch voice coil motor group to correspondingly deflect in the azimuth direction and the pitch direction.

[0033] The bandwidth of the fast mirror 5 is 500Hz, and real-time image shift compensation needs to be performed according to the speed of the target light source. Since time is needed for calculation compensation, if the traditional serial control is adopted, i.e. waiting for the rotating disc 22 to be in place before triggering the wide-band visible light high-speed camera 6, the time window will be wasted. Therefore, in the embodiment, the controller 8 selects an FPGA, and performs the following operation steps through double-channel FPGA parallel processing, one channel drives the fast mirror 5 to reflect and perform image shift compensation through PID, and the other channel predicts the required lead trigger time of the wide-band visible light high-speed camera 6 based on the data of the rotating light adjusting mechanism 2, the fast mirror 5 and the wide-band visible light high-speed camera 6 Δt ; Lead trigger time Δt satisfies the formula: Δt = t FSM响应 + t camera延迟 - t 转盘到位 ； t 转盘到位 is the time required for the rotating disc 22 of the rotating light adjusting mechanism 2 to be in place; t FSM响应 is the response time of the fast mirror 5; t camera延迟 is the delay time of the wide-band visible light high-speed camera 6.

[0034] An inertial sensor (IMU) is arranged on the base of the fast mirror 5, and the controller 8 combines the IMU data and image flow through Kalman filtering to realize the feedforward control of the fast mirror 5; in terms of vibration control, the start and stop of the rotating disc 22 will induce the shaking of the wide-band visible light high-speed camera 6, in addition to the normal mechanical vibration isolation, the rotating disc 22 needs to keep rotating at a constant speed during exposure to avoid the influence of acceleration and deceleration vibration on the picture quality; the image shift compensation of the fast mirror 5 needs to meet the formula: θ FSM = f • v 目标 •t 曝光 •π•180 ; θ FSM is the angle required for image shift compensation of the fast mirror 5; f is the focal length of the lens 1; t 曝光 is the exposure time of the visible light high-speed camera 6; v 目标 is the speed of the target light source.

[0035] Please continue to refer to Figure 1 , the imaging device based on multi-dimensional optical perception further comprises a base 9, and the base 9 is used for mounting the lens 1, the rotating light adjusting mechanism 2, the deformable mirror 3, the beam splitter 4, the fast mirror 5, the wide-band visible light high-speed camera 6, the wavefront sensor 7, the controller 8 and the base 9.

[0036] The application further comprises an imaging method, which is realized based on the imaging device based on multi-dimensional optical perception described above, and the method specifically comprises the following steps: the target light source is shot from the lens 1, then sequentially passes through the rotating light adjusting mechanism 2 and the deformable mirror 3, the beam splitter 4 divides the target light source into two beams, one beam is received by the wavefront sensor 7, the wavefront sensor 7 obtains wavefront distortion information and sends the wavefront distortion information to the FPGA, the FPGA generates a control instruction through a reconstruction algorithm, and the deformable mirror 3 corrects the distortion based on the control instruction; the other beam is reflected to the wide-band visible light high-speed camera 6 through the fast mirror 5; the controller 8 drives the rotating disc 22 to rotate through the motor 24 to switch different filters and polarizers 21 into the light path; two-way FPGA is controlled in parallel, one way is to control the fast mirror 5 to compensate the image shift through PID control, and the other way is to predict the arrival time of the rotating disc 22 to trigger the exposure of the wide-band visible light high-speed camera 6 in advance; the wide-band visible light high-speed camera 6 synchronously collects the optical signals modulated by the filters and polarizers 21, and outputs a multi-dimensional information pulse stream containing polarization state and spectral characteristics.

[0037] During the exposure of the wide-band visible light high-speed camera 6, the controller 8 controls the motor 24 of the rotary light adjusting mechanism 2 to keep the rotating disc 22 rotating at a constant speed, so as to avoid the mechanical vibration caused by acceleration and deceleration from affecting the image quality.

[0038] Obviously, the above embodiments are merely exemplary and are not intended to limit the embodiments. Based on the above description, one of ordinary skill in the art can make other different forms of changes or modifications. Here, it is not necessary and impossible to enumerate all the embodiments. The obvious changes or modifications derived therefrom are still within the protection scope of the present application.

Claims

1. An imaging device based on multidimensional optical sensing, characterized in that, include: Lens (1), rotating dimming mechanism (2), fast reflex mirror (5), wideband visible light high-speed camera (6) and controller (8), the rotating dimming mechanism (2) has multiple filters and polarizers (21) with different polarization angles on the turntable (22). The target light source enters from the lens (1), passes through the rotary dimming mechanism (2), and is reflected by the fast-reflecting mirror (5) to the wideband visible light high-speed camera (6). The controller (8) is connected in communication with the rotary dimming mechanism (2), the fast mirror (5) and the wideband visible light high-speed camera (6), and the controller (8) coordinates the control of the rotary dimming mechanism (2), the fast mirror (5) and the wideband visible light high-speed camera (6).

2. The imaging device based on multidimensional optical sensing according to claim 1, characterized in that, The controller (8) is specifically an FPGA. The dual-channel FPGA processes the following steps in parallel: one channel drives the fast-reflecting mirror (5) to reflect and perform image shift compensation, while the other channel predicts the required advance trigger time of the wideband visible light high-speed camera (6) based on the data from the rotating dimming mechanism (2), the fast-reflecting mirror (5), and the wideband visible light high-speed camera (6). Δt ; Advanced trigger time Δt Satisfying the formula: Δt=t FSM响应 + t camera延迟 - t 转盘到位 ； t 转盘到位 The time required for the turntable (22) of the rotary dimming mechanism (2) to reach its position; t FSM响应 The response time of the fast-reflecting mirror (5); t camera延迟 The delay time is the time of the wideband visible light high-speed camera (6).

3. The imaging device based on multidimensional optical sensing according to claim 2, characterized in that, The image shift compensation of the fast-reflecting mirror (5) must satisfy the following formula: θ FSM = f•v 目标 •t 曝光 •π•180 ； θ FSM The angle required for image shift compensation for the fast-reflecting mirror (5); f The focal length of lens (1); t 曝光 The exposure time of the visible light high-speed camera (6); v 目标 The velocity of the target light source.

4. The imaging device based on multidimensional optical sensing according to claim 3, characterized in that, It also includes an adaptive optics module; The adaptive optics module includes a deformable mirror (3), a beam splitter (4), and a wavefront sensor (7). The deformable mirror (3) and the beam splitter (4) are arranged sequentially between the rotary dimming mechanism (2) and the fast-reflecting mirror (5). The wavefront sensor (7) is arranged on the beam splitter (4) in the beam splitting path. The target light source enters through the lens (1), and then passes through the rotating dimming mechanism (2) and the deformable mirror (3) in sequence. The beam splitter (4) splits the target light source into two beams. One beam is received by the wavefront sensor (7), and the other beam is reflected by the fast-reflecting mirror (5) to the wideband visible light high-speed camera (6).

5. The imaging device based on multidimensional optical sensing according to claim 4, characterized in that, Both the wavefront sensor (7) and the deformable mirror (3) are connected to the controller (8). The wavefront sensor (7) acquires wavefront distortion information, and the controller (8) generates control commands based on the wavefront distortion information to enable the deformable mirror (3) to reshape the wavefront.

6. The imaging device based on multidimensional optical sensing according to claim 1, characterized in that, The rotary dimming mechanism (2) also includes a fixed plate (23), a motor (24) and a potentiometer (25); The motor (24) is fixedly connected to the fixed plate (23). The output end of the motor (24) is connected to the turntable (22). A potentiometer (25) is also provided on the fixed plate (23). A first gear is connected to the output end of the potentiometer (25). A second gear that meshes with the first gear is provided on the turntable (22). The motor (24) and the potentiometer (25) are both connected to the controller (8).

7. The imaging device based on multidimensional optical sensing according to claim 1, characterized in that, The fast-reflecting mirror (5) includes a control drive circuit, an azimuth voice coil motor assembly, an elevation voice coil motor assembly, an angle measuring sensor, a flexible support assembly, and a reflector; The azimuth voice coil motor, pitch voice coil motor, flexible support assembly and reflector are connected in sequence; the angle sensor measures the deflection angle of the reflector and transmits the measurement data to the controller (8). The controller (8) generates a control signal based on the measurement data and transmits it to the control drive circuit. The control drive circuit controls the azimuth voice coil motor and pitch voice coil motor to deflect in azimuth and pitch respectively.

8. The imaging device based on multidimensional optical sensing according to claim 1, characterized in that, The filters include near-infrared filters with wavelengths of 800nm ​​to 1700nm and visible light filters with wavelengths of 400nm to 800nm. The polarization angles of the polarizer (21) include 0°, 45°, 90° and 135°.

9. An imaging method, said method being implemented based on the imaging device based on multidimensional optical sensing as described in claim 5, characterized in that, The method is as follows: the target light source enters through the lens (1), and then passes through the rotary dimming mechanism (2) and the deformable mirror (3) in sequence. The beam splitter (4) splits the target light source into two beams. One beam is received by the wavefront sensor (7). The wavefront sensor (7) acquires the wavefront distortion information and sends it to the FPGA. The FPGA interprets and generates control commands through the reconstruction algorithm. The deformable mirror (3) performs wavefront reshaping based on the control commands to correct the distortion. The other beam is reflected by the fast-reflecting mirror (5) to the wideband visible light high-speed camera (6). The controller... (8) By controlling the motor (24) to rotate the turntable (22) to switch different filters and polarizers (21) into the optical path; by controlling two FPGAs in parallel, one path controls the fast mirror (5) to perform image shift compensation, and the other path simultaneously predicts the arrival time of the turntable (22) to trigger the exposure of the broadband visible light high-speed camera (6) in advance; by synchronously acquiring the optical signal modulated by the filter and polarizer (21) through the broadband visible light high-speed camera (6), a multi-dimensional information pulse stream containing polarization state and spectral characteristics is output.

10. The imaging method according to claim 9, characterized in that, During exposure by the broadband visible light high-speed camera (6), the controller (8) controls the motor (24) of the rotary dimming mechanism (2) to keep the turntable (22) rotating at a constant speed.

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