62 results about "Scattering radiation" patented technology

The invention relates to an electrochromic window multi-scene control method, system and device based on indoor human body thermal comfort and a medium. The method comprises the steps that a perception data set is constructed; based on the sensing data set, performing multi-parameter coupling calculation of solar incidence azimuth deviation constraint and dynamic projection overlapping to obtain a direct radiation component, performing window space coupling analysis and double space compensation calculation to obtain a scattered radiation component, and performing fusion to obtain an individual thermal radiation influence value; determining a scene category based on the perception data set, and establishing a thermal radiation evaluation benchmark by adopting a mode matched with the scene category; and if the thermal radiation evaluation benchmark exceeds a preset threshold value, the required transmissivity of the window faces is obtained through a full-transmissivity radiation distribution method, the corresponding window faces are adjusted to the target transmission gradient according to the required transmissivity, and coupling control over the wind direction and / or power of the air conditioning system is selectively triggered. According to the invention, by constructing a multi-dimensional dynamic sensing system and an intelligent control framework, collaborative optimization of human body thermal comfort and building energy efficiency is realized.

A method for training an algorithm for machine learning for a correction of recordings obtained by an imaging apparatus. A number of output images are recorded. Moreover a smaller number of first, high-quality scattered radiation images are simulated from the output images. A corresponding number of second, low-quality scattered radiation images is further simulated, wherein the simulation is undertaken with a number of photons reduced by at least an order of magnitude. The algorithm is trained with the second, low-quality scattered radiation images as input data and the first, high-quality scattered radiation images as output data.

A computer-implemented method for determining an estimation of a two-dimensional scattered radiation distribution in a two-dimensional X-ray image that is based on an imaging procedure performed by an X-ray detector is provided. The method includes receiving the X-ray image, applying an estimation algorithm to the X-ray image or to a two-dimensional intermediate image determined from the X-ray image. The estimation algorithm determines a respective two-dimensional partial scattered radiation image for a plurality of physical scatter processes such that image values of pixels of the respective partial scattered radiation image in each case describe an estimated value for a respective scattered radiation dose that was applied to a respective detector region of the X-ray detector assigned to the respective pixel during acquisition of the X-ray image by the respective physical scatter process. The estimation of the scattered radiation distribution is determined based on the plurality of partial scattered radiation images.

The invention discloses a DEM-based earth surface solar radiation prediction method, equipment and a medium. The method comprises the following steps: correcting a direct radiation reference value based on nonlinear attenuation of a cloud layer to direct radiation to obtain actual direct radiation; based on the enhancement effect of the cloud layer on the scattered radiation, correcting the scattered radiation reference value to obtain first actual scattered radiation; according to a preset shadow judgment criterion, calculating actual horizontal plane direct radiation after the actual direct radiation reaches the earth surface by taking the condition that the slope surface back to the sun has no direct radiation as a constraint; calculating second actual scattered radiation after the first actual scattered radiation reaches the earth surface according to the control of the sky vision field factor of the earth surface area on the scattered radiation; calculating reflected radiation generated after the actual direct radiation and the first actual scattered radiation reach the earth surface based on the Lambert reflection law; therefore, the total solar radiation is obtained. According to the invention, high-precision quantification of earth surface solar radiation under complex terrain conditions is realized.

A system for determining at least one biomechanical property of a reproductive cellular structure includes a radiation source for generating illuminating radiation, at least one optic for directing the illuminating radiation onto at least a portion of the reproductive cellular structure, a detector for detecting at least a portion of radiation scattered from the reproductive cellular structure, a spectrometer for generating a frequency spectrum of the detected scattered radiation, and an analyzer. The analyzer is configured to identify at least one Brillouin frequency shift in the frequency spectrum for the at least a portion of the reproductive cellular structure, and determine viability of the reproductive cellular structure based on the at least one Brillouin frequency shift.

A lithographic apparatus includes a projection system and an inspection system including a radiation system, a photonic integrated circuit system, and a detector system. The projection system projects an image of the patterning device onto a substrate. The radiation system directs radiation toward a target on the substrate to generate scattered radiation from the target. The radiation system includes a radiation source for generating radiation and an optical system for focusing the radiation onto a target. A photonic integrated circuit system includes a waveguide system integrated on a board and a radiation coupler disposed at a waveguide of the waveguide system. The radiation coupler initiates at least a portion of the scattered radiation into the waveguide system. A detector system receives the scattered radiation from the waveguide system and generates a measurement signal based on the scattered radiation.

The invention discloses an antenna near-field coupling partitioning method for scattered radiation collaborative design of a planar antenna, and relates to the technical field of antennas. The method comprises the following steps: acquiring electromagnetic field distribution data of an antenna under a target working frequency; then, according to the electromagnetic field distribution data, calculating a field function partition criterion index of the space around the antenna, so as to divide a function area of the near field of the antenna; and finally, according to the field function partition criterion index, dividing the function areas of the near field of the antenna, and loading different electromagnetic function structures in different function areas. According to the method, a systematic and quantifiable design criterion is adopted, the method is used for near-field coupling partition of the planar antenna, the layout of electromagnetic functional structures with different functions is guided, and therefore the collaborative decoupling design of the radiation performance and scattering performance of the antenna is achieved.

The application discloses a kind of inclined surface hourly solar radiation calculation method and related equipment, belong to solar energy resource assessment and building energy saving technical field.The method includes: obtaining horizontal plane solar radiation data and space-time information, and the inclination and azimuth of target inclined surface;Calculate solar elevation angle, solar incidence angle, clear sky index and horizontal plane scattering radiation ratio;Two scattering radiation conversion coefficients are obtained by using two basic models respectively;At least according to clear sky index, horizontal plane scattering radiation ratio and solar incidence angle to determine dynamic weight;Two scattering radiation conversion coefficients are weighted and summed with dynamic weight, to obtain combined scattering radiation conversion coefficient, and then obtain inclined surface hourly solar total radiation.The method is combined by dynamic weight based on weather state and solar position real-time change to two basic models with obvious difference in weather adaptability, overcome the limitation that single model is only accurate under certain weather, and does not depend on multi-regional long-term measured data, improve the calculation accuracy and applicability under all weather types.

The present invention relates to a system and method for non-contact temperature measurement of a portion (3') of an object (3) coated with a layer of a luminescent material from the zinc oxide family. Using a light source (1) emitting in a wavelength range covering at least partially a range between 360 and 480 nm, and means for measuring light intensity as a function of wavelength (5) covering at least part of the range of the light source (1), the light intensity is measured as a function of the wavelength of radiation scattered by the portion of the object. Then, from the measurement of the light intensity as a function of wavelength, a value of at least one parameter is determined, and the temperature of the portion (3') of the object (3) is determined from the value of the parameter and a predetermined lookup table. Figure 2 to be published

This invention relates to the field of radiation sterilization technology and discloses an irradiation sterilization device for cosmetics, comprising: support legs and a transmission belt frame mounted on top of them. A rotating shaft is disposed inside the transmission belt frame, and a conveying platform is disposed outside the rotating shaft. An electron beam chamber is disposed outside the transmission belt frame, and a support platform is fixedly mounted on the top of the electron beam chamber. Vertical poles are symmetrically fixed on the top of the support platform, and a retaining pin is disposed on the lower surface of the top of each vertical pole. This invention uses a follow-up shielding part to automatically conform to the top of the cosmetics and block scattered radiation, thus preventing excessive radiation burns to the cosmetics while eliminating irradiation dead zones, resulting in more uniform and thorough sterilization. A linkage part directly links the height of the cosmetics with the conveying speed, adapting to cosmetics of different heights and pre-matching a reasonable irradiation time. A temperature control and speed adjustment part automatically fine-tunes the conveying speed based on temperature feedback, ensuring that the irradiation dose remains stable within the acceptable range.

The invention provides a shielding system for a surgical table for shielding a body from scattered radiation during a medical intervention. The shielding system comprises a frame attachable to the surgical table and a shield comprising a material for blocking radiation, the shield being configured to be mounted on the frame, wherein the shielding system is adapted to be folded by displacement of at least one part or parts of the shield in a vertical direction. The invention also provides a surgical table comprising such a shielding system. The system further comprises a hinging mechanism, wherein the frame is attachable to the surgical table by the hinging mechanism to allow movement of the frame and repositioning of the shield in a substantially horizontal direction.

The invention provides a photovoltaic panel solar radiation quantity prediction method and device. The method comprises the steps of collecting a sky image and synthesizing the sky image into an HDR image; analyzing sky radiation information according to the HDR image; establishing a real-time sky model according to the sky radiation information; and calculating the incident radiation quantity of the photovoltaic panel, wherein the incident radiation quantity of the photovoltaic panel comprises direct solar radiation, sky scattering radiation and ground reflection radiation. According to the photovoltaic panel solar radiation quantity prediction method and device provided by the invention, the prediction of the solar radiation quantity of the photovoltaic panel in a complex shielding environment is realized, and the defect that an ideal sky model cannot describe an actual external environment is effectively avoided by constructing a shielding-oriented high-resolution sky radiation field; through fusion of the HDR image and the real-time sky model and in combination with the shielding relationship, the distribution accuracy of the incident radiation on the surface of the photovoltaic panel in time and space dimensions is improved.

The application relates to a photovoltaic array layout optimization method and device based on irradiation and shadow dynamic coupling, and the method comprises the following steps: constructing a total irradiance model about a photovoltaic component inclination angle and a photovoltaic component azimuth angle according to direct solar radiation, scattering radiation and reflected radiation of the inclined surface of the photovoltaic component; calculating a shadow loss factor by combining a critical unshaded spacing and an actual spacing of front and rear rows of the photovoltaic component array, and coupling the shadow loss factor to the total irradiance model to obtain an effective irradiance model; constructing an optimization objective function based on the effective irradiance model by taking the maximization of annual effective irradiance as an optimization objective; and adopting the lemur optimization algorithm to perform comprehensive balance optimization of dynamic irradiance benefits and shadow losses on the optimization objective function by taking the photovoltaic component inclination angle, the photovoltaic component azimuth angle and the actual spacing as optimization variables to obtain an optimal variable combination. The application can solve the core problems of large irradiation calculation error, static shadow evaluation and low optimization efficiency.

A method comprising obtaining at least two signals based on scattered radiation from a metrology target and detected by a radiation sensor of a metrology system obtaining a first data set comprising the phases of the at least two signals calculating from the first data set a correction of an intensity value of a signal as detected by a radiation sensor.

In order to reduce a computing effort for correcting initial images from an imaging apparatus, a scatter model is used to simulate scattered-radiation images, and corresponding initial images are selected from the original initial images. These are used to train a neural network. The neural network may be used to calculate scattered-radiation single images that may be used to correct each individual initial image into a corrected initial image.

The invention provides a multistage scanning imaging system and method based on diffraction imaging, and relates to the technical field of radiation imaging. The system comprises a first transmission scanning stage and a second transmission scanning stage, the first transmission scanning stage comprises a first ray source and a first detection assembly, the first ray source is used for emitting a first ray for scanning an inspected object, and the first detection assembly is used for detecting a first transmission ray transmitted by the inspected object to generate a first detection signal; the signal processing device is configured to process the first detection signal to generate a transmission image, and obtain an object of interest in the inspected object according to the transmission image; the second diffraction scanning stage comprises a second ray source and a second detection assembly, the second ray source is used for emitting second rays for scanning the inspected object, and the second detection assembly is used for detecting scattered rays scattered by at least the interested object so as to generate a second detection signal; the signal processing device is configured to process the second detection signal to generate a diffraction image, and obtain material information of the object of interest according to the diffraction image.

The invention discloses a scattered radiation prediction correction method based on an ANN neural network algorithm, and belongs to the field of atmospheric environment monitoring and ecological meteorological modeling, and the method comprises the following steps: S1, data collection and preprocessing; s2, constructing a model training set; s3, constructing and training an ANN model; s4, model verification and performance evaluation; s5, calculation and correction of scattered radiation fractions; the method aims at solving the problems that scattered radiation fraction (Kd) data in an existing observation network is missing and a traditional empirical model is large in prediction error. Through constructing a trained neural network model, scattered radiation reconstruction of an unobserved site is realized, and high-quality input is further provided for an ecological model.

The invention relates to a computer-implemented method for ascertaining a single scattered radiation image for an X-ray image point to be observed of an X-ray image, comprising the following steps: obtaining an X-ray image; providing an estimation algorithm; -ascertaining a single scattered radiation image for each X-ray image point to be observed by applying an estimation algorithm to the X-ray image.

A system (10) for detecting brain abnormalities in a brain of a patient includes a headband (15) configured to be worn on a head of a patient. The headband (15) includes at least one light source (75) configured to generate at least one pulsed incident beam of light (IBNIR) directed toward a portion of the brain (45) of the patient and at least one detector (80) configured to detect at least one backscattered beam of light (BSBNIR) from the portion of the brain (45) of the patient. The headband (15) further includes a controller (90) configured to calculate an insertion loss (IL) and an insertion phase difference (I PD ). It is then determined if the patient has a brain abnormality based on the calculated insertion loss (IL) and the insertion phase difference (I PD ).

The invention relates to a device (1) for detecting scattered radiation (170) in the beam path of a laser system, comprising: an annular body (5) which is formed with a light guide channel (14) located inside the body; wherein the main body (5) has a first opening (6) and a second opening (7), which are spaced apart from each other in a wall of the main body (5), in particular along an inner circumference of the main body (5), and which each form a channel for scattered radiation (170) to enter the light guide channel (14); the light guide channel (14) has a detection section (3), in which the radiation intensity of the scattered radiation (170) received by the light guide channel (14) can be detected.

Disclosed is a method of and apparatus for metrology or inspection of a structure on a substrate. The method comprises providing first radiation to a first region of a generation medium to generate measurement radiation; providing, simultaneously with the provision of first radiation at the first region, either second radiation to at least a first subregion of the first region so as to suppress generation of the measurement radiation within the first subregion or second radiation to at least a second subregion of the first region to enhance generation of the measurement radiation within the second subregion; illuminating the structure with the measurement radiation; and capturing scattered radiation, having scattered from the structure as a result of the illuminating step.

Systems, methods, and computer software are provided for determining deviations of a target, such as in a photolithography process. One metrology system (400) includes a radiation source (412) configured to irradiate a target (418) to generate scattered radiation from the target (419), an optical fibre (460) positioned to transmit the scattered radiation (419) to a detector (430, 430'), a programmable processor (432), and a non-transitory computer readable medium having instructions recorded thereon. The instructions, when executed by a computer having the programmable processor (430), cause operations including generating a fibre input image (462) of at least a portion of the target, determining a distortion of the fibre input image (462), determining a deviation of the target (418) based at least on correcting for the distortion.

Disclosed is a method for measuring alignment on an alignment mark, and associated apparatuses. The method comprises illuminating the alignment mark with illumination comprising at least one wavelength; capturing the scattered radiation scattered from the alignment mark as a result of said illumination step, and determining at least one position value for said alignment mark from an angularly resolved representation of said scattered radiation, wherein said alignment mark, or a feature thereof, is smaller than said at least one wavelength in at least one dimension of a substrate plane.

One or more example embodiments relates to a computer-implemented method for determining individual scattered-radiation images for X-ray image points to be considered in an X-ray image.

The invention relates to the technical field of radiotherapy auxiliary instruments, and discloses a modularized head anti-scattering shielding device for body radiotherapy, which comprises two base assemblies, a side wall shielding assembly, a top cover shielding assembly, a neck flashboard assembly and a bottom shielding assembly, the two side wall shielding assemblies are used for being fixed to the edges of the two sides of a bed board and serve as a bearing foundation of the whole shielding device, the two side wall shielding assemblies are symmetrically arranged left and right, the two side wall shielding assemblies are detachably connected to the top of the base assembly in an inserted mode, and neck avoiding channels are formed in the front faces of the two side wall shielding assemblies. According to the invention, through the organic combination of the base, the side wall, the top cover and the bottom assembly, and the combination of the labyrinth type embedded structure and the bottom composite shielding layer, multidirectional scattered radiation and backscattering are effectively blocked, traditional protection blind areas are thoroughly eliminated, and comprehensive protection is provided for sensitive organs of the head and the neck.

A method for segmentation of high-contrast objects in X-ray images includes receiving an X-ray projection image through an interface. The X-ray projection image includes a plurality of pixels. An image processing processor determines, for one or more pixels of the received X-ray projection image, whether the respective pixel is a shadow pixel representing a projection mapping of a high-contrast object. High-contrast object segmentation of one or more high-contrast objects is generated for the X-ray projection image based on the shadow pixels. The determination of shadow pixels includes, for the respective pixel of the received X-ray projection image, determining a ratio of the scattered radiation intensity to be assigned to the primary radiation intensity to be assigned to the pixel, comparing the ratio with a scatter-primary threshold value, and classifying the pixel, wherein the pixel is classified as a shadow pixel if the ratio is greater than the scatter-primary threshold value.

The invention provides a multistage scanning imaging system and method based on diffraction imaging, and relates to the technical field of radiation imaging. The system comprises a first transmission scanning stage which comprises a first ray source and a first detection assembly, the first ray source is used for emitting a first ray for scanning an inspected object, and the first detection assembly is used for detecting a first transmission ray transmitted by the inspected object to generate a first detection signal; the signal processing device is configured to process the first detection signal to generate a transmission image, and obtain an object of interest in the inspected object according to the transmission image; the second diffraction scanning stage comprises a second ray source and a second detection assembly, the second ray source is used for emitting second rays for scanning the inspected object, and the second detection assembly is used for detecting scattered rays scattered by at least the interested object so as to generate a second detection signal; the signal processing device is further configured to process the second detection signal to generate a diffraction image, and obtain material information of the object of interest according to the diffraction image.

A method is provided for measuring at least one biomechanical property of a reproductive cell structure. The method includes illuminating the reproductive cell structure with radiation; detecting at least a portion of the radiation scattered by the illuminated reproductive cell structure; analyzing the frequency spectrum of the detected scattered radiation to identify at least one Brillouin frequency shift in that spectrum; and determining the biomechanical property based on that Brillouin frequency shift. The method also includes determining a viability index of the reproductive cell structure based on the biomechanical property.

One or more example embodiments relates to a computer-implemented method for determining a scattered radiation estimation for an X-ray beam detector with detector elements, wherein an anti-scatter grid is in front of the X-ray beam detector, wherein in at least one direction, at least two respective detector elements are between respective adjacent lamellae of the anti-scatter grid.

Disclosed is a sensor, comprising: at least one phase modulating projection grating element being configured to scatter measurement radiation and impose a phase modulation onto the resultant scattered radiation; at least one detector being configured to receive radiation derived from reflected radiation comprising said scattered radiation subsequent to reflection from a surface to be measured; and at least one processor unit being operable to determine a measurement signal comprising a parameter of said radiation received at the detector, and determine a height of said surface from a phase of said measurement signal.