48 results about "Polarized spectroscopy" patented technology

The invention discloses a polarization spectrum modulation type multispectral stereo imaging method which solves the problem that in the prior art, an existing polarization spectrum imaging scheme does not achieve three-dimensional reconstruction of a target and achieves the purpose that the three-dimensional reconstruction of the target is not achieved under the condition that active illumination or special marks are not needed. Synchronous high-precision reconstruction of physical attributes and three-dimensional geometry of the surface of the target is realized; the method comprises the following steps: uniformly modulating polarization information and spectral information of incident light of a target through a three-way optical filter and a polaroid to obtain modulated incident light information; performing aliasing acquisition of a plurality of polarization spectrum components on the modulated incident light information through a multi-color detector combination to obtain aliasing light intensity; performing linear solution on the aliasing light intensity to obtain each polarization spectrum component vector, calculating the polarization degree and the polarization angle of each channel, and further deriving a surface zenith angle and an azimuth angle; reconstructing the three-dimensional morphology of each spectrum channel through normal gradient field frequency domain integration; and finally, fusing the multi-spectral three-dimensional data to obtain a multi-spectral three-dimensional imaging result.

The invention discloses an intermediate infrared polarization spectrum imaging method and device. The method comprises the following steps: carrying out joint coding on an intermediate infrared light beam carrying to-be-measured target space, spectrum and polarization information by adopting an intermediate infrared polarization spectrum modulator consisting of metasurface units which are arranged in an array and have non-correlation response characteristics; projecting the coding light field to a two-dimensional detector array to generate a two-dimensional coding image under single exposure; and decoding the two-dimensional coding image through a reconstruction unit so as to reconstruct and obtain a space-spectrum-polarization four-dimensional data cube of the target to be measured. The problem that polarization information cannot be rapidly obtained in the prior art is solved, target full information can be obtained under single exposure, and the system has the advantages of being high in imaging speed, simple in structure, easy to miniaturize and the like.

The invention discloses a road intelligent diagnosis method based on an AI large model, and relates to the technical field of road engineering detection, and the method comprises the following steps: building a unified time base line, constructing a phase reference field, injecting a calibration pulse, separating dynamic shadow time sequence texture and crack initial features in a road image sequence, and obtaining a road image sequence; generating prior information of dynamic shadows and cracks; under the constraint of prior information, polarization spectrum three-dimensional coding imaging is carried out, polarization angle distribution and spectrum gradient are extracted, a feature dictionary of dynamic shadows and cracks is constructed, and phase drift in the prior information is calibrated. According to the method, a unified time base line and a phase reference field are constructed, and accurate distinguishing of dynamic shadows and cracks is realized by combining polarization spectrum imaging and anti-fact distillation; the point cloud and acceleration data are fused for geometric reconstruction, and through phase conjugate extinguishing and closed-loop feedback, the continuity and accuracy of diagnosis are significantly improved, and maintenance error decisions caused by misjudgment are avoided.

The application provides a satellite-borne multi-viewing-angle polarization spectrum imaging system for aerosol optical parameter measurement, and belongs to the technical field of optical imaging. The system is loaded on a satellite platform and comprises a telescope objective, a multi-slit assembly, a light-splitting prism, a collimating lens group, a plane grating group, an imaging lens group, a depolarization light-splitting prism group, a polaroid group and a detector group. The system is based on static multi-viewing-angle synchronous observation design, and realizes high-precision detection of aerosol optical parameters through multi-viewing-angle, hyperspectral and full-polarization multi-dimensional information fusion.

The application relates to the field of spectrum measuring instruments, in particular to a circularly polarized spectrum measuring instrument capable of synchronous adjustment, which comprises an angle table installed on the surface of a base, an input box and a receiving box installed on the angle table near the center line on both sides, laser emitters and receiving plates respectively installed on one side of the input box and the receiving box, input polarizers and receiving polarizers respectively installed in the input box and the receiving box for emitting and receiving circularly polarized light, and a detection table arranged on the surface of the base and used for bearing a detected object. Laser emitters and receiving plates respectively arranged on one side of the input box and the receiving box are used for separately detecting incident and outgoing angles, the incident and outgoing angles of polarized light are simulated before sample detection, synchronous adjustment of the input polarizer and the receiving polarizer is carried out, the detection automation degree of the circularly polarized spectrum measuring instrument is further improved, and the detection efficiency is improved to a certain extent.

The application discloses a kind of full polarization spectral imaging device and detection method, contain sequentially arranged polarization modulator, imaging spectrometer, data acquisition processing display system to incident light;Polarization modulator is single fixed retarder and single fixed linear polarizer sequentially arranged along incident light, can carry out spectral modulation to full stokes parameter, it has the superiority of simple, ultra-compact, miniaturization, anti-system error in structure.By constructing complete imaging physical model or constructing imaging physical model based on compressed sensing, then using untrained artificial neural network realizes the full stokes parameter image reconstruction under each narrow waveband, and the deep neural network of "black box operation" is endowed with physical meaning.The reconstructed polarization spectral resolution can be consistent with the resolution of the imaging spectrometer used;And it has the characteristics of strong anti-noise ability, so as to ensure high-quality reconstruction.

The invention discloses a wine quality AI visual detection method, and relates to the technical field of wine quality detection. The method comprises the following steps: pretreating a wine sample; polarization spectrum images in different wave bands and different polarization directions are collected through a multispectral polarization imaging system and preprocessed; segmenting a microorganism region based on a polarization degree threshold, and extracting polarization spectrum feature vectors of microorganisms; extracting morphological feature vectors of the microorganisms; fusing the two feature vectors to construct a feature fusion matrix, and inputting the feature fusion matrix into an improved attention mechanism convolutional neural network model for training to obtain a wine quality AI detection model; after a sample to be detected is processed, the model is input to obtain a quality index predicted value, and quality grade judgment is achieved. According to the invention, the multispectral polarization imaging technology and microbial morphological characteristic analysis are combined, the anti-interference capability is strong, the detection precision and efficiency are high, the rapid, lossless and accurate detection of the wine quality is realized, and the practical value is high.

The invention belongs to the field of polarization measurement, and particularly relates to a space solar spectrum magnetic field telescope based on multi-wave-plate polarization modulation, which comprises a telescope system, a relay system and a spectrum imaging system, the telescopic system comprises a first 1 / 2 wave plate, a 1 / 4 wave plate and a second 1 / 2 wave plate; when neither the first 1 / 2 wave plate nor the second 1 / 2 wave plate fails, the second wave plate is kept static, and the first wave plate and the third wave plate rotate in the same direction according to a preset different-speed asynchronous motion time sequence, so that the full-stokes component of the solar polarization spectrum is measured; when any one of the first 1 / 2 wave plate and the second 1 / 2 wave plate breaks down, the 1 / 4 wave plate is started, and the 1 / 4 wave plate and the other normally working 1 / 2 wave plate rotate in the same direction according to the re-planned different-speed asynchronous motion time sequence, so that the measurement of the full stokes component of the solar polarization spectrum is maintained. According to the invention, full Stokes measurement can be realized, and the blank of space solar vector magnetic field detection capability in China is filled.

This application relates to the field of optical polarization measurement technology, specifically to a wide-spectrum, high-bandwidth static spectral modulation Stokes polarization measurement device, comprising a polarization modulation module, a spectral sampling module, and a high extinction ratio polarizer. The polarization modulation module includes a phase retarder and a linear polarizer; the spectral sampling module has sub-nanometer spectral resolution; the high extinction ratio polarizer includes a halogen tungsten lamp and a Glan Taylor prism for generating high-purity linearly polarized light; the obtained demodulation factor and the modulation spectrum acquired by the spectral sampling module are used to invert the Stokes parameters using zero-heterodyne coherent demodulation technology. This application employs a phase retarder with high birefringence, which, for the same thickness, produces an optical path difference tens of times greater than that of quartz, increasing the Stokes polarization measurement bandwidth by a factor of the response and improving the measurement accuracy of polarization spectral parameters. Simultaneously, the zero-heterodyne coherent demodulation method is used to eliminate the dispersion interference of the phase retarder through calibration.

The invention discloses a circular polarization spectrometer and a spectrum analysis method thereof, and relates to the technical field of circular polarization spectrum analysis. A chiral structure layer of a circularly polarized photoelectric detector of the circular polarization spectrometer comprises a left-handed chiral structure array and a right-handed chiral structure array which are independent from each other and are in mirror symmetry, and a photosensitive layer comprises a first photosensitive unit and a second photosensitive unit. The first photosensitive unit is electrically connected with the first signal detection module through the first electrode group, the second photosensitive unit is electrically connected with the second signal detection module through the second electrode group, and the circularly polarized photoelectric detector is used for collecting a left-handed response current signal and a right-handed response current signal under monochromatic light with the same wavelength; and the circular polarization spectrometer calculates the left-hand circularly polarized light intensity and the right-hand circularly polarized light intensity according to a formula. The circular polarization spectrometer can synchronously and quantitatively separate left-handed and right-handed circularly polarized light on a monochromatic wavelength point, and the device stability and the process compatibility are high.

The application discloses a three-dimensional light-thermal parameter reconstruction method and system for a combustion process, and belongs to the field of combustion diagnosis.The application solves the problems of low measurement accuracy in a high-temperature environment and poor accuracy of extracting effective signals in a complex background existing in the prior art light field parameter measurement.The application adopts a polarization spectrum camera and a light field camera to synchronously perform multi-angle data acquisition on a combustion area, and acquires polarization spectrum data and light field data of the combustion area;light field depth information is extracted from the light field data, a three-dimensional structure of the combustion area is constructed by combining the light field depth information with a light field reconstruction algorithm, spectral analysis is performed on the polarization spectrum data, and polarization degree and polarization angle information of the polarization spectrum are acquired;the three-dimensional structure is combined with a CT reconstruction algorithm; a three-dimensional distribution field of particulate matters in the combustion process is acquired; and based on the polarization spectrum information and the preprocessed light field data, the three-dimensional temperature field and the concentration field distribution of gases in the combustion area are calculated by using the optimized three-dimensional structure.The application is mainly used for combustion product parameter acquisition.

The invention relates to a polarization spectrum device, in particular to an integrated polarization spectrum device for noninvasive blood glucose measurement and a blood glucose measurement method, and solves the technical problem of low blood glucose measurement precision caused by the problems of low optical parameter dimension, complex algorithm processing, overfitting and the like of the existing noninvasive blood glucose measurement device. According to the integrated polarization spectrum device for noninvasive blood glucose measurement, polarization signals and multispectral signals are obtained through the polarization path and the spectrum path respectively, compared with a traditional blood glucose measurement method, the optical information dimension of the integrated polarization spectrum device is effectively improved, efficient complementation of spectrum information and polarization information can be achieved, and therefore the blood glucose measurement precision is improved. The invention further provides a blood glucose measurement method, the LSTM neural network is adopted for blood glucose prediction, the problem of overfitting of high-dimensional polarization spectrum information by a traditional BP neural network can be avoided, and the blood glucose prediction precision is improved.

The ghost elimination method based on polarization-spectrum coupling of the ghost elimination method of the present application comprises a reflection layer, which reflects the radiation light of an imaged object and generates a ghost signal; a rotatable polarizer, the rotation angle theta is matched with the black phosphorus crystal axis direction of the black phosphorus spectrum polarization coupled infrared photodetector; the black phosphorus spectrum polarization coupled infrared photodetector is sequentially arranged from bottom to top as follows: SiO2 / Si substrate as an insulating support layer, graphene layer on the SiO2 / Si substrate, InSe thin film covering the graphene layer to form a type II heterojunction interface, black phosphorus layer on the InSe thin film as a core photosensitive layer, Cr / Au metal composite electrode deposited on the graphene layer and the black phosphorus layer respectively, the in-plane anisotropy ratio PER(lambda) of the black phosphorus layer changes with the wavelength, and the difference between the light response value I~alpha T 4 / PER(lambda) distinguishes the real signal from the ghost signal, and provides a miniaturized, self-driven ghost elimination system and method.

The invention relates to a method and a device for detecting defects of a thin-wall layer coated with solder paste. The method comprises the following steps: performing dual-wavelength polarized light scanning on thin-wall layer solder paste on a PCB (Printed Circuit Board) to obtain a polarization spectrum data set; performing pulse laser irradiation and ultrasonic signal acquisition on the thin-wall layer solder paste to obtain a thermo-acoustic coupling response data set; performing fluorescence lifetime imaging scanning on the thin-wall layer solder paste mixed with the quantum dots in advance to obtain a fluorescence parameter data set; and inputting the polarization spectrum data set, the thermal-acoustic coupling response data set and the fluorescence parameter data set into an attention guidance deformation convolutional network for feature extraction and fusion, and outputting a comprehensive detection report. According to the invention, the detection capability of different depth areas is enhanced, the accurate characterization of the internal acoustic characteristics of the thin-wall layer is realized, and the defect detection precision of the thin-wall layer is improved.

The present application relates to the technical field of optical device calibration, and particularly relates to a kind of polarization radiation joint calibration method of secondary imaging spectral polarization camera, method includes: according to the digital signal value of each polarization pixel output of incident non-polarized monochromatic light, determine the spectral band corresponding to each polarization pixel, establish calibration pixel group based on spectral band, establish the mapping relationship of polarization element and filter element;Measure the dark current characteristics of polarization element, construct dark current correction matrix;Different wavelength, different linear polarization angle complete linear polarization monochromatic light is input in turn, and calibration data is collected;Pretreatment calibration data, pretreatment includes dark current correction;Based on calibration pixel group, extract the effective response value in pretreated calibration data;With the spectral stokes vector of incident light field as input, with effective response value as output, solve system response matrix.The present application significantly improves calibration accuracy and inversion accuracy of polarization spectral imaging detection.

The application discloses a circularly polarized spectrometer and a spectral analysis method thereof, and relates to the technical field of circularly polarized spectrum analysis. The chiral structure layer of the circularly polarized photodetector of the circularly polarized spectrometer comprises a left-handed chiral structure array and a right-handed chiral structure array which are independent and mirror-symmetric; the photosensitive layer comprises a first photosensitive unit and a second photosensitive unit; the first photosensitive unit is electrically connected with a first signal detection module through a first electrode group; the second photosensitive unit is electrically connected with a second signal detection module through a second electrode group; the circularly polarized photodetector is used for collecting left-handed response current and right-handed response current signals under monochromatic light of the same wavelength; and the circularly polarized spectrometer is used for calculating left-handed circularly polarized light intensity and right-handed circularly polarized light intensity according to a formula. The circularly polarized spectrometer can synchronously and quantitatively separate left-handed and right-handed circularly polarized light intensity at a monochromatic wavelength point, and has high device stability and process compatibility.

The present application relates to the technical field of color detection, in particular to a kind of antique flax stick active dyeing color difference calculation optimization method and system.The present application includes real-time monitoring fabric motion state, calculating motion speed and displacement, determining the timing and position compensation parameters of spectrum acquisition;Through polarized light source, the surface of the fabric to be measured is illuminated at the acquisition position, and polarized spectral data is collected in the normal direction of the fabric surface to obtain reflectance spectral information;Ultraviolet light source is used to excite the surface of the fabric to be measured, and fluorescence spectral data is collected to identify different fiber regions;The fiber density distribution in the fiber region is calculated, and a layered weight system is constructed;Based on the reflectance spectral information, the color difference of the fiber region is calculated, the color difference characteristics are extracted, and the antique quantification result is measured;According to the antique quantification result, set the color difference threshold standard, and adjust the color difference threshold according to the evolution trend;Based on the layered weight system and the color difference threshold, the color difference value of the fiber region is weighted calculated, and the comprehensive color difference evaluation result is obtained.

This invention discloses an experimental method for measuring the electron-hole recombination emission rate. The apparatus for this method includes a laser chip (with an anti-reflection coating on only one end of its horizontal two-sided end face), a plano-convex lens, a polarizer, a fiber optic coupler, an optical fiber, and a spectrometer. The plano-convex lens, polarizer, plano-convex lens, and fiber optic coupler are placed sequentially on the same horizontal line on both sides of the chip. The fiber optic coupler is connected to the spectrometer via an optical fiber. First, energy is applied to the laser chip, causing it to emit light from both sides. The spectra from both sides are focused onto the fiber optic coupler by the plano-convex lens and then transmitted to the spectrometer via the optical fiber. By rotating the polarizer, different polarization spectra can be selected to obtain specific spectral images under transverse electric / magnetic field modes. Finally, by substituting the spectral data from both ends into the established formula, the electron-hole recombination rate of the laser chip can be calculated.

The application discloses a kind of underwater target spectral reflectivity reconstruction methods based on difference calculation, solve the technical problem that present underwater object spectral reflectivity acquisition method exists measurement inaccuracy or only applicable to close-up shooting, cannot be used for the calculation of long-distance object spectral reflectivity;The method of the application, without additional ranging equipment, only using a polarized spectral imager is moved to obtain two groups of images similar to binocular imaging, the distance, angle information of light source, imager and target point are calculated by binocular measurement algorithm and stereoscopic geometry model, combined with the water attenuation coefficient measured in situ by attenuator and Lambert-Beer law, the original incident and emission radiance value of target object can be calculated, so that the real spectral reflectivity of target is reconstructed.

The invention belongs to the technical field of optical metrology testing, and particularly relates to a dispersion polarization spectral imaging system and method based on a Savart polariscope channel. The system comprises a demodulation module, and a front lens group, a polarization modulation module and a grating spectrometer which are sequentially arranged along the direction of an optical axis, the front lens group receives parallel light reflected by a target and enables the parallel light to enter the polarization modulation module, the polarization modulation module separates the parallel light to obtain interferograms with different wavelengths, and the grating spectrometer is used for receiving the interferograms. And the grating spectrometer performs dispersion on the interferograms with different wavelengths, and the demodulation module demodulates the interferograms with different wavelengths at different positions to obtain a polarization image of the target. According to the invention, target multispectral polarization information detection can be realized, the target multispectral polarization information can be obtained, and the detection efficiency is greatly improved.

The application provides an all-day water body circular polarization hyperspectral measurement method and device. The method provided by the application comprises the following steps: emitting circular polarization white light and linear polarization white light to a first spectrometer and a second spectrometer respectively, constructing a first equation based on received circular polarization white light information, and constructing a second equation based on received linear polarization white light information; solving a first correction coefficient and a second correction coefficient by simultaneously solving the first equation and the second equation; emitting a circular polarization white light source above a horizontal plane of a water area to be measured, receiving scattering light information of substances in the water area to be measured, and correcting the received scattering light information based on the first correction coefficient and the second correction coefficient; and determining a target substance attribute corresponding to a measured circular polarization spectrum curve based on the measured circular polarization spectrum curve and a circular polarization spectrum curve standard library search. The all-day water body circular polarization hyperspectral measurement method and device provided by the application are used to realize all-day circular polarization hyperspectral accurate detection of water bodies.

The invention discloses a polarization spectrum information acquisition method based on an acousto-optic tunable filter, and belongs to the technical field of optical polarization and spectral imaging. According to the method, a detection light path comprising a diaphragm, a phase delayer, a front lens group, an acousto-optic tunable filter, a rear lens group, a reflector, a polarization analyzer, an imaging lens group and a detector is constructed, incident light is subjected to polarization beam splitting by using the polarization sensitive characteristic of the acousto-optic tunable filter, and the diffraction spectrum is detected under the condition that the diffraction spectrum is not influenced. Transmission light is led out through a reflecting mirror, and spectrum and polarization information is obtained through the transmission o light and the transmission e light; acquiring light intensity information of a target in different spectrum channels by combining the light intensity difference of transmitted light of the acousto-optic tunable filter in the power-off state and the power-on state; a polarization information resolving model is established based on a polarization transformation matrix theory, flexible resolving of target polarization information is realized through combined modulation of a phase delayer and a polarization analyzer, and the method is suitable for detection in various scenes.

The invention provides a common-aperture visible light and near-infrared polarization spectrum imaging device and method, and relates to the technical field of optical systems.The imaging device comprises a visible near-infrared telescope, a near-infrared imaging assembly, a visible light imaging assembly, a compensating mirror set, an LCVR assembly and an LCTF assembly; the system works cooperatively under a common-caliber framework composed of the near-infrared imaging assembly, the visible light imaging assembly and the light splitting assembly, visible light and near-infrared light are subjected to polarization spectrum imaging at the same time, the voltage of the LCVR assembly and the voltage of the LCTF assembly are accurately controlled, flexible modulation of the polarization state and wavelength of light is achieved, high-quality polarization spectrum information is obtained, and high-precision imaging is achieved. The polarization spectrum imaging system has the advantages of being high in efficiency and dynamic, effectively reducing light energy loss, achieving efficient polarization and spectrum modulation of a dynamic scene, and solving the technical problems that an existing polarization spectrum imaging system is large in size, low in integration level, low in response speed and serious in light energy loss.

The invention discloses a target identification method based on polarization spectral imaging. Relates to the technical field of photoelectric detection and recognition, in particular to a target recognition method based on polarization spectral imaging. According to the invention, a density peak value clustering wave band selection method based on image entropy is adopted, characteristic wave bands are extracted, and a multi-scale information fusion algorithm and a deep learning technology are combined, so that efficient detection and identification of a camouflage target are realized, and the accuracy and robustness of target identification are remarkably improved. The method comprises the following steps: obtaining and preprocessing a polarization spectrum data cube; for the data processed in the step S1, extracting a characteristic wave band; carrying out multi-scale fusion on the polarization spectrum under the characteristic wave band, and calculating a fusion image; and inputting the fused image into a YOLOv11 model for classification to obtain a classification result of target identification.

The invention provides an infrared polarization-spectrum-light field combined imaging system, which relates to the technical field of infrared imaging and comprises a front imaging group, a collimating lens, an amplitude division lens array, a light filter array, a first polaroid array, a second polaroid array and a micro lens array which are sequentially arranged along the optical axis direction of incident light, the amplitude division lens array divides the collimated light beam into a plurality of light beams; the optical filter array comprises J * J optical filter units, and each optical filter unit performs spectrum selection on light beams; the first polaroid array is used for synchronously acquiring various polarization state images in each spectrum channel; the second polaroid array is used for suppressing polarization crosstalk of the micro-lens array and eliminating scattered stray light; and the microlens array is used for performing high-dimensional angle decomposition on the acquired multi-spectral and multi-polarization-state image to complete spatial angle discretization measurement of light field information. According to the invention, synchronous acquisition of multi-spectrum, polarization and light field information of a thermal infrared radiation wave band is realized.

This invention provides a single-stage hyperspectral image dehazing and reconstruction method based on joint polarization spectral priors, comprising the following steps: Step 1, haze imaging modeling; Step 2, acquiring joint polarization spectral compressed observation data; Step 3, constructing a single-stage polarization spectral reconstruction neural network; Step 4, network training and optimization. The integrated reconstruction architecture proposed in this invention effectively overcomes the limitations of traditional "two-stage" methods. By directly establishing an end-to-end mapping from compressed observations to clear hyperspectral images, it avoids the cumbersome computational steps involved in dehazing followed by reconstruction (or vice versa), significantly improving inference efficiency.

This invention discloses a microfluidic-based polypeptide-based helical fiber with circularly polarized luminescence and its preparation method, belonging to the field of nanotechnology. Utilizing multiple hydrogen bonding interactions between polypeptides and based on the solute conformational confinement and ordered solvent diffusion mechanism of a microfluidic laminar flow chip, this invention develops a polypeptide-based circularly polarized luminescent material with excellent luminescence performance. Circular dichroism spectroscopy and circular polarization spectroscopy tests show that the helical fiber material obtained by this invention exhibits mirror-symmetric signals. Compared with materials obtained by traditional solution stirring, the polypeptide-based helical fibers prepared in the microfluidic chip by this invention not only have a more uniform morphology but also a larger... g lum value( L -Peptide / TBI and D The luminescence asymmetry factor of -Peptide / TBI is ±1.9×10⁻⁶. ‑3 Furthermore, this method has a certain degree of universality and is applicable to the assembly of other macromolecules, including polymers, nucleic acids, and proteins.

The application belongs to the field of polarization measurement, and particularly relates to a space solar spectrum magnetic field telescope based on multi-wave plate polarization modulation, which comprises a telescopic system, a relay system and a spectral imaging system; the telescopic system comprises a first 1 / 2 wave plate, a 1 / 4 wave plate and a second 1 / 2 wave plate; when neither the first 1 / 2 wave plate nor the second 1 / 2 wave plate fails, the second wave plate is kept static, the first wave plate and the third wave plate are rotated in the same direction according to a preset different-speed non-synchronous motion time sequence, and measurement of full Stokes components of solar polarization spectrum is realized; when any one of the first 1 / 2 wave plate or the second 1 / 2 wave plate fails, the 1 / 4 wave plate is started, and is rotated in the same direction with the other normal 1 / 2 wave plate according to a re-planned different-speed non-synchronous motion time sequence, so as to maintain the measurement of full Stokes components of solar polarization spectrum. The application can realize full Stokes measurement, and fills the gap of the space solar vector magnetic field detection capability in China.

The application discloses a kind of spectral reconstruction methods based on full system polarization calibration and data demodulation, comprising:1. using wide-band light source, calibration linear polarizer, calibration achromatic quarter-wave plate to the channel type polarized spectrometer full system to be calibrated is polarized calibration;2. by the channel type polarized spectrometer full system after calibration measurement spectral power distribution, and the polarization effect of system is calculated to create Mueller matrix;3. using sparse dictionary to sparse representation of stokes parameter, and construct target equation;4. using least square method to solve target equation, complete spectral reconstruction.The application improves the traditional channel type polarized spectral calibration method, and the polarization calibration is carried out to the full system, and the polarization effect of system can be more accurately obtained, so that more accurate reconstruction result is obtained.

The invention provides a polarization spectrum three-dimensional imaging method and device using an intelligent algorithm, and relates to the field of three-dimensional imaging, a three-dimensional model and a polarization spectrum image are collected, and the three-dimensional model and the polarization spectrum image are processed to obtain a real normal, combined polarization information, normal prior information and spectral information; constructing a polarization spectrum three-dimensional normal reconstruction model based on physical constraints by using the combined polarization information, the normal prior information and the spectral information, training the polarization spectrum three-dimensional normal reconstruction model by using a real normal to obtain an optimal polarization spectrum three-dimensional normal reconstruction model, and setting a loss function and an evaluation index to evaluate the model; and inputting the polarization spectrum information of the target scene into the polarization spectrum three-dimensional normal reconstruction model to generate a prediction normal of the target scene, and reconstructing a three-dimensional shape of the target according to the prediction normal. According to the polarization spectrum three-dimensional imaging method and device using the intelligent algorithm, the reconstruction precision of the three-dimensional normal is effectively improved.