31 results about "Shortwave infrared" patented technology

The invention discloses a geological No.1 satellite remote sensing image inter-band relative registration method and a geological No.1 satellite remote sensing image inter-band relative registration device, relates to the technical field of image data processing, and can accurately perform remote sensing image inter-band relative registration without changing the original pixel value of a remote sensing image under the condition that the quality of the remote sensing image is poor. The method comprises the following steps: registering all short-wave infrared band images corresponding to a geological No.1 satellite remote sensing image band based on a self-selected region offset calculator to obtain a registered short-wave infrared band image; registering all the first focal plane module band images, all the second focal plane module band images and the first focal plane module band images and the second focal plane module band images based on a self-selected area offset calculator to obtain registered visible light band images; and performing registration between the registration short-wave infrared band image and the registration visible light band image on the basis of time frame selection and resampling so as to complete the relative registration between the geologic first satellite remote sensing image bands.

This invention provides a catadioptric shortwave infrared imaging spectrometer, comprising, in order of light incidence, an entrance slit, a plane mirror, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, a grating, and an imaging sensor. The plane mirror, together with the upper portions of the first, second, third, fourth, fifth, sixth, and seventh lenses, forms a collimation system. The grating, together with the lower portions of the seventh, sixth, fifth, fourth, third, second, and first lenses, and the imaging sensor, together form an imaging system. Collimation and imaging share a single lens group, resulting in a compact structure, easier aberration correction, simpler assembly and adjustment, better image quality, lower tolerance sensitivity, and reduced assembly difficulty.

This invention discloses a detection-adjustment integrated digital twin grain storage system and method based on hyperspectral shortwave infrared, including a hyperspectral grain storage lidar front-end, a three-dimensional grain condition twin, a LoRa Internet of Things (IoT) system, and back-end execution devices. The lidar front-end collects point cloud spectra and constructs a spectral-grain condition inversion map using a database. By integrating parameters such as storage temperature and humidity, and gas concentration, a dynamic grain condition prediction model is established, generating a three-dimensional grain condition twin. The IoT system enables front-end and back-end interactive control, achieving synchronous fusion of the map and data, and remote feature extraction. The back-end execution devices include temperature and atmosphere control storage devices, which automatically adjust the temperature and gas composition inside the storage area based on feedback from the twin, suppressing insects and mold and extending the storage period. This invention constructs a "detection-modeling-feedback" closed loop, solving the problems of difficult insect and mold monitoring, bran interference, and lagging regulation.

A method of characterizing a device under test (DUT) includes illuminating the DUT with a broadband optical beam within an optical field of view (FOV), illuminating the DUT with an X-ray beam within an X-ray FOV overlapping the optical FOV, and concurrently acquiring X-ray metrology information, e.g., one or more X-ray images utilizing various modalities, such as absorption, phase contrast difference, darkfield, small angle X-ray scattering (SAXS) and / or fluorescence, from the X-ray FOV and a plurality of optical images of the optical FOV, each of the optical images corresponding to respective selected wavelengths of the broadband optical beam from each of ultraviolet, visible, and infrared wavelengths, for example including deep ultraviolet, near infrared, or short-wavelength infrared wavelengths. The DUT may be one or more substrates, e.g., stacked, and include electronic devices such as three-dimensional integrated devices.

A method of calibrating a sensing system for determining a position of a feature of an object includes defining reference positions within a three-dimensional reference system; determining corresponding positions within an image frame of an image sensor and positions within a sensor frame of a further sensor; and generating a mapping linking the reference positions and the positions. A position of the feature of the object may be determined based on the mapping. There is also provided a method for monitoring a workpiece, the method comprising: obtaining shortwave infrared images; determining a corresponding image position of a feature of the workpiece or of an automated welding system using a machine-learned model; and determining a position of the feature.

The invention discloses a satellite remote and laser communication integrated load with multiple frequency bands sharing a light path, and belongs to the technical field of integrated satellite loads, the satellite remote and laser communication integrated load comprises a main optical system adopting an off-axis three-reflection anastigmatic telescope and covering a 400 nm-14 [mu] m wave band, and a light splitting sub-system adopting an off-axis three-reflection anastigmatic telescope and covering a 400 nm-14 [mu] m wave band; through precise light splitting design, dynamic resource scheduling and real-time compensation control, high-precision laser communication is achieved while the multi-band remote sensing performance is guaranteed, the real-time data return requirement of a future high-resolution remote sensing satellite is met, and the real-time data return requirement of the future high-resolution remote sensing satellite is met. According to the invention, hierarchical light-splitting full-spectrum coverage and multi-band efficient cooperative work are realized, the load weight is effectively reduced, the load power consumption is reduced, the requirement for in-orbit stable operation of an integrated load is met, and the problem that multifunctional integration is not easy to realize in a limited load space is solved.

This invention relates to a visible light / shortwave infrared dual-band common-aperture optical system, comprising a common-aperture section, a planar beam splitter, a visible light channel subsystem, and a shortwave infrared channel subsystem. The common-aperture section is located at the front end of the optical system and consists of a primary mirror and a secondary mirror arranged coaxially. The planar beam splitter is located in the optical path behind the secondary mirror. Full-band light from the object side is reflected sequentially by the primary and secondary mirrors before reaching the planar beam splitter, where it is split and then enters the visible light channel subsystem and the shortwave infrared channel subsystem for imaging in different bands. The optical system achieves dual-band common-aperture, realizing a long focal length and large aperture design for the dual-band system, improving the system's target detection / identification capability, and has the advantages of high spatial resolution, long operating distance, and high identification probability. At the same time, it effectively simplifies the system structure, reduces the system size, reduces assembly and adjustment difficulty, and achieves a low obstruction ratio and high imaging quality.

The invention discloses a methane smoke plume recognition and emission estimation method based on multi-constraint background selection, and belongs to the technical field of greenhouse gas remote sensing monitoring and hyperspectral inversion. According to the method, satellite-borne or airborne short-wave infrared hyperspectral observation data is subjected to preprocessing such as radiometric calibration, atmospheric correction and noise suppression, a multi-constraint background pixel screening model including same-column consistency constraint, spectrum slope consistency constraint and diffusion distance constraint is constructed, and a background spectrum library is automatically obtained; based on the background library, an enhanced matched filtering algorithm is adopted to extract the methane concentration enhancement amount, and the system deviation and the false alarm rate are remarkably reduced. A smoke plume area is accurately extracted through spatial filtering, morphological segmentation and connected domain analysis, and the methane emission flux is inverted by combining an integrated quality enhancement (IME) emission estimation model with meteorological wind field data.

This invention discloses a method and apparatus for relative registration between bands of remote sensing images from the Geological Survey-1 satellite, relating to the field of image data processing technology. It enables accurate relative registration between bands of remote sensing images even when the image quality is poor, without altering the original pixel values. The method includes: registering all shortwave infrared band images corresponding to the bands of the Geological Survey-1 satellite remote sensing image using a self-selected region offset calculator to obtain a registered shortwave infrared band image; registering between all first focal plane module band images, between all second focal plane module band images, and between a first focal plane module band image and a second focal plane module band image using a self-selected region offset calculator to obtain a registered visible light band image; and registering the registered shortwave infrared band image and the registered visible light band image based on time frame selection and resampling to complete the relative registration between bands of the Geological Survey-1 satellite remote sensing image.

The utility model discloses a short-wave infrared imaging lens, which relates to the field of optical equipment and sequentially comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens from an object side to an image side, the second lens is a meniscus cap lens with negative focal power; the third lens is a biconvex lens with positive focal power; the fourth lens is a biconcave lens with negative focal power; the fifth lens is a biconvex lens with positive focal power; the sixth lens is a biconcave lens with negative focal power; the seventh lens is a biconvex lens with positive focal power; and the eighth lens is a plano-convex lens with positive focal power. According to the utility model, by reasonably controlling the positive and negative matching of the focal power of each lens of the lens, the focal power of the lenses is distributed to be positive-negative-positive-negative-positive-negative-positive-positive-positive, the staggered distribution of the positive and negative focal powers can effectively balance the low-order aberration of the lens, and the tolerance sensitivity of the lens can be reduced at the same time; the imaging quality of the lens is ensured while the lens is kept miniaturized.

An organic random polymer comprises a structure of Formula I:The organic random polymer utilizes the 3-position of a sulfur-containing five-membered heterocycle as the polymerization site rather than the end of 2-(3-oxo-2,3-dihydro-1H-inden-1-ylidene) malononitrile, and thus there are no isomers. The organic random polymer can be tailored by adjusting the y-block to absorb light in the shortwave infrared region and exhibit good thermal stability. The present invention also provides an organic optoelectronic device comprising a first electrode, an active layer, and a second electrode. The active layer contains the organic random polymer. This organic optoelectronic device demonstrates good external quantum efficiency in the near-infrared region and possesses excellent thermal stability.

There is provided a method (300) of calibrating a sensing system (100) for determining a position of a feature (236) of an object (10). The method (300) comprises: defining (310) reference positions (181, 182) within a three-dimensional reference system; determining (320, 330) corresponding positions within an image 5 frame (122) of an image sensor (120) and positions within a sensor frame (132) of a further sensor (130); and generating (340) a mapping (150) linking the reference positions and the positions. A position of the feature of the object may be determined based on the mapping. There is also provided a method (400) for monitoring a workpiece (10), the method (400) comprising: obtaining (420, 430) shortwave 10 infrared images (125, 135); determining (440) a corresponding image position of a feature of the workpiece or of an automated welding system using a machine-learned model (190); and determining (450) a position of the feature.

There is provided a method (300) of calibrating a sensing system (100) for determining a position of a feature (236) of an object (10). The method (300) comprises: defining (310) reference positions (181, 182) within a three-dimensional reference system; determining (320, 330) corresponding positions within an image frame (122) of an image sensor (120) and positions within a sensor frame (132) of a further sensor (130); and generating (340) a mapping (150) linking the reference positions and the positions. A position of the feature of the object may be determined based on the mapping. There is also provided a method (400) for monitoring a workpiece (10), the method (400) comprising: obtaining (420, 430) shortwave infrared images (125, 135); determining (440) a corresponding image position of a feature of the workpiece or of an automated welding system using a machine-learned model (190); and determining (450) a position of the feature.

A triangulation system including an illumination unit including a SWIR illumination source for emitting a light beam; optics capable of shaping the light beam into a line; an imaging unit including at least one SWIR detector configured to detect the light beam when reflected by an object in the field of view; wherein deformation of the line in relation to an initial path of the line to the imaging unit translates into at least a depth of the object in the field of view; and wherein the depth allows for calculation by an application associated with at least one processor of at least a height and profile of the object based on known parameters of the system, including at least an angle of the line, and a distance between the imaging unit and the illumination source.

Exemplary methods, systems and devices according to the exemplary embodiments of the present disclosure are provided for performing a shortwave infrared (SWIR) imaging procedure. Thus, the exemplary methods, systems and devices can apply a photon avalanching material to a substrate, and place the substrate in optical communication with a light receiving material.

The present invention provides a horizontal short-wavelength infrared light-emitting diode with an emission wavelength range of 1100 to 2000 nanometers (nm) and a method for manufacturing the same. [Solution] The horizontal light-emitting diode includes a permanent substrate, an epitaxial composite layer, a first conductivity type electrode, a second conductivity type electrode, and an ohmic contact layer. The epitaxial composite layer has a light-emitting layer with an emission wavelength of 1100 to 2000 nanometers (nm). The light-emitting layer is placed on the permanent substrate. The first conductivity type electrode is placed on the permanent substrate and electrically connected to the epitaxial composite layer. The second conductivity type electrode is placed on the epitaxial composite layer, electrically connected to the epitaxial composite layer, and located on the same side as the first conductivity type electrode and the permanent substrate. The ohmic contact layer forms an ohmic contact with the first conductivity type electrode. The ohmic contact layer is sandwiched between the epitaxial composite layer and the first conductivity type electrode. The thickness of the ohmic contact layer is 1 micrometer or less.

The invention provides a short wave infrared image transmission system and method based on a ring core optical fiber and a storage medium. The system comprises a receiving unit, a modulation unit, a transmission unit and an image processing unit. The receiving unit is used for receiving reflected light after the short-wave infrared light irradiates the surface of a target object, performing collimation processing to obtain a collimated light beam and outputting the collimated light beam to the modulation unit; the modulation unit is used for carrying out wavefront modulation on the collimated light beam to obtain a vortex light beam and outputting the vortex light beam to the transmission unit; the transmission unit comprises one or more ring core optical fibers and optical coupling components arranged at the two ends of the ring core optical fibers, and is used for outputting the vortex light beams to the image processing unit; the image processing unit is used for receiving the output light beam and sequentially executing photoelectric conversion processing and analog-to-digital conversion processing to generate a speckle image and restore the speckle image to obtain a short-wave infrared image; according to the invention, the problems of poor imaging concealment and insufficient detection flexibility of the existing infrared imaging technology can be solved, and the imaging flexibility and concealment are improved.

This invention discloses an image fusion method for improving the spatial resolution of shortwave infrared remote sensing images, comprising: step 1, inputting remote sensing images; step 2, adjusting the spatial resolution of remote sensing image B; step 3, principal component analysis of image A; step 4, overlaying and recombining images A, C, and D; step 5, setting a virtual moving window; step 6, determining dominant ground feature pixels; step 7, calculating the spectral composition of dominant ground feature pixels; step 8, spectral fitting; step 9, spectral reconstruction; and step 10, generating a high-resolution shortwave infrared image. This image fusion method for improving the spatial resolution of shortwave infrared remote sensing images has the advantages of high fidelity, simplicity, stability, reliability, and high computational efficiency. It utilizes principal component transformation to extract high-resolution spatial information from spectral images and spectral fitting to fully leverage the spectral information of multispectral and shortwave infrared images, thus improving the spatial resolution of shortwave infrared images while maintaining spectral characteristics.

The application discloses a greenhouse gas monitoring technical field, and relates to a kind of two-phase Sentinel-2 Methane Plume Dataset construction method and Methane Plume detection method.The method comprises the following steps: according to the obtained pure methane concentration field image set, construct relative plume density matrix, and the reflectivity of shortwave infrared B12 band of target area image at t time is physically attenuated and injected, according to the difference between shortwave infrared B11 band and B12 band of target area image at t-1 time, and the difference between shortwave infrared B11 band and B12 band of target area image at t time after physical attenuation injection, calculate methane index change matrix and standardize, obtain normalized methane index change matrix;The channel dimension of target area image at t time, target area image at t-1 time and normalized methane index change matrix is spliced, and methane plume sample is obtained;Relative plume density matrix is binarized to obtain plume true value label matrix of methane plume sample.

The application discloses a regional 30-meter resolution evapotranspiration estimation method cooperating with multi-satellite shortwave infrared observation, comprising the following steps: 1, obtaining meteorological radiation data of a research region and spatializing the data to form evapotranspiration model driving data; 2, obtaining satellite remote sensing data of the research region; 3, 1.24-micron shortwave infrared band reconstruction; 4, shortwave infrared moisture index calculation and remote sensing vegetation index time series reconstruction; 5, evapotranspiration estimation model construction; 6, construction of a relative evaporation ratio parameter model based on remote sensing shortwave infrared; 7, model parameter calibration; 8, verification and evaluation of regional evapotranspiration; the method of the application supports the demand of application fields such as regional water resource management, agricultural water use efficiency evaluation, regional drought monitoring and agricultural water saving, provides a train of thought for estimation of regional evapotranspiration, and the estimated evapotranspiration data product can provide key support for regional water and drought disaster monitoring and agricultural water management.

The present invention provides: a compound which is capable of performing photoelectric conversion in a short-wavelength infrared (SWIR) region and has excellent solubility; a composition; an ink; a photoelectric conversion element; and a photosensor.　Provided is a compound represented by formula (1). In formula (1), A1, A2, L1, L2, D, m, and n are as defined in the description.　Also provided is a composition which contains a p-type semiconductor material and an n-type semiconductor material, and which contains the above-described compound as the n-type semiconductor material.　Also provided is an ink which contains the above-described compound and a solvent.　Also provided is a photoelectric conversion element which comprises a positive electrode, a negative electrode, and an active layer that is provided between the positive electrode and the negative electrode and contains a p-type semiconductor material and an n-type semiconductor material, wherein the above-described compound is contained as the n-type semiconductor material.

The invention discloses a regional 30-meter resolution evapotranspiration estimation method cooperating with multi-satellite short-wave infrared observation. The method comprises the steps of 1, obtaining meteorological radiation data of a research region and spatializing the meteorological radiation data to form evapotranspiration model driving data; 2, acquiring satellite remote sensing data of a research area; 3, reconstructing a 1.24 micron short wave infrared band; 4, short wave infrared moisture index calculation and remote sensing vegetation index time sequence reconstruction; 5, constructing an evapotranspiration estimation model; 6, constructing a relative evaporation ratio parameter model based on remote sensing short wave infrared; 7, calibrating model parameters; 8, verifying and evaluating regional evapotranspiration; according to the method, the requirements of the application fields in the aspects of arid region water resource management, agricultural water efficiency evaluation, regional drought monitoring, agricultural water saving and the like are met, a thought is provided for estimation of regional evapotranspiration, and an estimated evapotranspiration data product can provide key support for the aspects of regional flood and drought disaster monitoring, agricultural water management and the like.

This invention provides a dynamic monitoring technology for characteristic parameters of reservoirs in sediment-rich rivers based on remote sensing interpretation and multi-source data fusion, belonging to the field of water conservancy engineering monitoring technology. The technology includes the following steps: S1: Remote sensing image acquisition and preprocessing; S2: Water area extraction, fusing green band and shortwave infrared band, and calculating the improved normalized difference water index; S3: Constructing a water level inversion model, integrating preprocessed daily-scale measured water level data with the concurrent water area extracted in step S2, and dividing it into training and validation sets; S4: Calculating the dynamic water storage of the reservoir; S5: Constructing a sediment concentration inversion model, integrating preprocessed daily-scale measured sediment concentration data to construct a sediment concentration inversion model. This invention uses remote sensing interpretation to achieve automated, long-term, and large-scale continuous monitoring of water and sediment parameters in sediment-rich reservoirs, significantly improving monitoring efficiency; reducing manpower and material costs, and providing technological innovation for watershed-scale dynamic water and sediment perception.

The present application relates to a kind of infrared absorption waveband atmospheric spectral transmittance measurement method, it is related to detection field, including the following steps, selecting the spectrometer capable of covering absorption waveband, and installing atmospheric absorption band filter on spectrometer;According to the minimum, maximum measurement value of spectrometer parameter selection corresponding attenuator;Spectrometer is directly aimed at solar spectrum data acquisition, reads the background average corresponding digital value measured by spectrometer;The bad point of calculated spectral data is rejected;Using the spectral calibration data in laboratory, the spectral data that has been rejected is quantitatively inversed, the radiation brightness of spectrometer is calculated;The absorption waveband spectral brightness of solar reaching ground is calculated;According to the radiation brightness of calculated spectrometer and the absorption waveband spectral brightness of solar reaching ground, atmospheric spectral transmittance is directly calculated, the present application has the advantages of expanding the measurement and inversion means of shortwave infrared absorption band atmospheric transmittance spectral research.

Provide are a curable resin composition containing ITO particles, in which a cured product obtained from the curable resin composition can exhibit high transmittance over a visible light to shortwave infrared wavelength region while maintaining a wavelength dependence of a desired refractive index; a cured product formed of the curable resin composition; and a diffractive optical element and a multilayer diffractive optical element.A curable resin composition includes particles which have a core-shell structure, in which a core portion is composed of indium tin oxide, a monofunctional or higher (meth)acrylate compound, and a dispersant; a cured product formed of the curable resin composition; and a diffractive optical element and a multilayer diffractive optical element.

The utility model relates to the field of geothermal shaft calcium carbonate scaling experiment devices, particularly discloses a reaction device for simulating calcium carbonate precipitation at different CO2 degassing rates, and solves the technical problem that the simulation requirement of a calcium carbonate scaling process of high-temperature and high-pressure geothermal fluid under the degassing condition is difficult to meet in the current experiment process. The reaction kettle is provided with an air inlet pipe with a pipe orifice positioned below the liquid level in the kettle and an air outlet pipe with a pipe orifice positioned above the liquid level in the kettle, and the outer side of the reaction kettle is sleeved with an electric jacket; the carbon dioxide storage bottle is communicated with the air inlet pipe through an air pump; the nitrogen storage bottle is communicated with the gas inlet pipe through a gas pump; the tail gas recycling box is communicated with the gas outlet pipe through a back pressure regulator; the monitoring unit comprises a temperature detector, a pressure detector and a short wave infrared camera; the central processing unit is electrically connected with the monitoring unit; the device can meet the requirement of simulating the calcium carbonate scaling process under the degassing condition of online observation of high-temperature and high-pressure geothermal fluid, and particularly can simulate the calcium carbonate precipitation process under different CO2 degassing rates.

A remote sensing image cloud detection method based on spectral feature guidance and spatial-spectral convolution includes: generating a multispectral remote sensing image training set and a test set; constructing a remote sensing image cloud detection network based on spectral feature guidance and spatial-spectral convolution, wherein the remote sensing image cloud detection network based on spectral feature guidance and spatial-spectral convolution includes sequentially cascaded encoding and decoding modules, wherein the encoding module includes a shortwave infrared cloud index guidance module and multiple sequentially cascaded spatial-spectral feature fusion modules; training the remote sensing image cloud detection network based on spectral feature guidance and spatial-spectral convolution using the training set; and inputting the test set into the trained remote sensing image cloud detection network for cloud detection. This invention extracts and fuses spectral features and spatial features respectively, effectively extracting and fusing multi-spectral remote sensing data, and achieving decoupling of spatial correlation and channel correlation in remote sensing data.

The invention discloses a satellite fire point identification method for coupling vegetation temperature and humidity covariant features, and the method comprises the following steps: obtaining high-resolution optical satellite image data, and carrying out the preprocessing of the high-resolution optical satellite image data; constructing a fire analysis effective area mask, and performing combined judgment based on a vegetation index, a water body index and a humidity index; calculating a short wave infrared band difference index, and preliminarily identifying a thermal anomaly pixel; performing morphological screening on the thermal anomaly pixels; constructing a coupling moisture temperature covariant characteristic index; logic and operation are carried out on the coupling index and the thermal anomaly agent index, a fire analysis effective area mask is combined, multi-element collaborative judgment is achieved, and a final fire point recognition result is output; carrying out post-processing and auxiliary verification on the identification result; the method is suitable for early warning and quick response of the fire.