200 results about "Image detector" patented technology

The invention discloses a coal-fired boiler combustion instability monitoring method and system based on multi-parameter fusion, and the method comprises the steps: constructing a hearth flame imaging system which comprises an image detector, a lens, a stainless steel cavity and a cooling air channel; the flame image intensity is converted into radiation intensity through blackbody furnace calibration, and the flame temperature and emissivity are calculated based on the Planck law; extracting flame characteristic parameters including average radiation intensity, temperature, emissivity and standard deviation thereof; constructing a load-flame characteristic parameter model, and predicting parameter reference values under different loads through multiple linear regression; and calculating a combustion instability index CII, carrying out weighted fusion on the normalized deviation of the real-time measured value and the predicted value, and judging that CII is equal to 1 when the flame area is 0 or the average temperature is lower than 900 DEG C. The flame radiation image and the unit operation parameters are fused, and the limitation of traditional single-parameter monitoring is solved; combustion instability dynamic quantitative evaluation is achieved through the CII index, and the method is suitable for early warning of the deep peak regulation working condition.

A dental X-ray imaging system (100) comprises: a dental X-ray imaging unit (102) having an X-ray source part (114), an X-ray imaging detector part (116) with an X-ray detector, and a gantry part (112) for the X-ray source part (114) and the X-ray imaging detector part (116); and a control system (106). The control system (106) controls the parts of the dental X-ray imaging unit (102) to acquire an X-ray scout image (302) of the patient (300) by using a first, larger part of an active area of the X-ray detector, and to acquire panoramic dental X-ray image data of the patient (300) by using a second, smaller part of the active area of the X-ray detector being respective to the panoramic imaging. A method for a panoramic dental X-ray imaging of a patient (300), a computer program (714), and a tangible non-volatile computer-readable medium are also disclosed.

A calibration target for use with a radiographic image detector includes a target body securable to the image detector and a plurality of radiopaque linear markers, e.g. wires, fixed to the target body, wherein access to the image detector by incident radiation is at least partially blocked by the plurality of linear markers. By using the geometric properties of wires and advanced detection techniques, a precise calibration suitable for high-quality, volumetric three-dimensional CT reconstruction from biplanar X-ray images is achieved.

The utility model provides a nanoscale precision machining surface integrity detection device for precision machining, which belongs to the technical field of detection devices and comprises a machine body, a platform is arranged in the machine body, a rotating mechanism is arranged in the platform, and the rotating mechanism comprises a mounting seat, a driving motor, a speed reducer, a rotating rod and a turntable. According to the utility model, through the arrangement of the rotating mechanism, the placing disc can rotate orderly, the workpiece on the placing disc can be rapidly detected by matching with the use of an image detector, and through the arrangement of the clamping mechanism, the workpiece is kept stable in the detection process and is prevented from moving or rotating in the detection process, so that the detection efficiency is improved. The safety of the whole detection process can be ensured, the image detector can be driven to sweep or move on the to-be-detected surface of the workpiece through the arrangement of the first moving mechanism and the second moving mechanism, and it is ensured that the image detector can cover all the to-be-detected surfaces of the workpiece.

A counterbalanced imaging device is provided and includes an imaging source and an imaging detector. The counterbalanced imaging device also includes a gantry ring that physically supports the imaging source and the imaging detector. The gantry ring also enables the imaging source and the imaging detector to simultaneously rotate about a center of rotation. The gantry ring may also comprise a detachable segment having one or more counterbalance measures contained therein to align a center of gravity of the gantry ring with the center of rotation when the detachable segment is mounted onto the gantry ring.

The invention discloses a multi-wavelength laser collimator based on radial shearing. The multi-wavelength laser collimator comprises a near-field reference, a telescope objective combination, a bifocal objective and an image detector which are sequentially arranged along a light path. Aberration-free imaging of near-field light beams is achieved through a bifocal objective lens, and meanwhile far-field pointing is detected through coaxial shearing interference generated by means of amplitude light splitting. A single non-mobile sampling detection light path and a single detection sensor are used to realize simultaneous acquisition of near-field position information and far-field pointing information of a laser beam; the light spot position deviation and the fringe translation amount are analyzed through a computer, and high-precision collimation is achieved through a feedback control system. And the detection of the angle direction of the laser beams with various wavelengths can be realized by using a radial shearing interference technology. The device breaks through the limitation of traditional double-optical-path collimation, has the characteristics of simple structure, strong anti-interference performance, multi-wavelength applicability and the like, remarkably improves the collimation precision, reduces the cost, and has important application value in the field of laser precision collimation.

An X-ray imaging device emits an X-ray to irradiate an object and includes an object moving mechanism that rotates the object; an X-ray image detector to detect a projection image of the object; an object temperature adjusting mechanism configured to change a temperature of the object; and a processing unit configured to acquire a cross-sectional image of the object by a reconstruction calculation from the projection images detected by the X-ray image detector by rotating the object. The processing unit is acquires a plurality of cross-sectional images and of the object captured at a plurality of different temperatures T1 and T2, and divides an inside of the object into regions for each of substances using a distribution of pixels of each of the cross-sectional images based on CT values obtained at the plurality of temperatures T1 and T2 at which the cross-sectional images of the object are acquired.

The invention discloses a lightweight polarization television imaging assembly and a video image processing method thereof, the imaging assembly adopts a system architecture composed of an FPGA processing board, a detector board, a lens and a shell structure, and the detector board comprises four image detectors, a detector power management circuit and an interface circuit. Polarizing films in different directions are respectively pasted on each detector, and the angles are respectively 0 degree, 45 degrees, 135 degrees and 90 degrees. According to the video image processing method, the four image detectors are utilized, the miniaturization and autonomous controllable functions of the polarization detectors are achieved, all detection original images and solved polarization information images are reserved, and real-time switching of polarization multi-dimensional images is achieved.

A projection apparatus (102) for image projection of an image on a subject (114). The apparatus (102) includes an image detector (104) having a detector field of view, where the image detector (104) is configured to detect an input image of the subject 5 (114). The processor (204) is configured to generate an output image based on the input image, where the output image includes content representing at least a portion of the content of the input image. An image projector (106) has a projector field of view, where the projector field of view overlaps the detector field of view, and where the image projector (106) is configured to project the output image on a target surface (208) 10 of the subject (114).

The application belongs to the technical field of photon imaging detection, and particularly relates to a photon counting imaging detection system based on a mixed anode. The system comprises a vacuum sealed tube detector composed of a window coated with a photocathode, a microchannel plate stack and a mixed anode, and a signal processing circuit. The photocathode is used for converting photons incident through the window into photoelectrons. The microchannel plate stack is used for converting the photoelectrons into electron clouds. The mixed anode comprises a strip anode and a delay line anode arranged orthogonally, and the mixed anode transmits the collected charge short pulses of each channel to the signal processing circuit. The signal processing circuit calculates the two-dimensional coordinates of the photons based on the collected charge short pulses of each channel, and then transmits the two-dimensional coordinates of the photons to a terminal for imaging display. The application provides a photon counting imaging detection system based on a cross strip-delay line mixed anode, and solves the problem that the existing position sensitive anode detector cannot simultaneously have high spatial resolution and high temporal resolution.

Method of operation of an image sensor comprising a medium (15) including at least one photosensitive material (19; 191) capable of generating charges (190) by photoelectric effect when the sensor is exposed to incident light, and collection electrodes (181) in contact with said medium (15) associated with pixel circuits, method in which at least one electric field including at least one lateral component is created to collect said charges (190) on at least one of said collection electrodes (181), enabling their reading by the associated pixel circuit, in which said electric field is generated by creating at least one potential difference between said collection electrode (181) and at least one other area of ​​the sensor, raised to a different potential, this other area being located between at least two collection electrodes (181).

The invention relates to a dental X-ray imaging system (100) for dental X-ray imaging of a patient (300). The system (100) comprises: a dental X-ray imaging unit (102) comprising: an X-ray source portion (114), an X-ray imaging detector portion (116) comprising one X-ray detector, and a gantry portion (112) comprising the X-ray source portion (114) and the X-ray imaging detector portion (116); and a control system (106). The control system (106) is configured to: control the portion of the dental X-ray imaging unit (102) to acquire an X-ray localization image (302) of the patient (300) by using a first portion of an active area of the X-ray detector; and control the portion of the dental X-ray imaging unit (102) to acquire panoramic dental X-ray image data of the patient (300) by using a second portion of the effective area of the X-ray detector corresponding to panoramic imaging. The first portion of the active area is larger than the second portion of the active area. The invention also relates to a method for panoramic dental X-ray imaging of a patient (300), a computer program (714) and a tangible non-volatile computer readable medium.

The application provides a point target wide-area high-precision positioning method, device and equipment combined with imaging model fine and coarse calibration, relates to the technical field of optical imaging precision measurement, and aims to realize point target wide-area high-precision positioning. The method comprises the following steps: collecting point target images located at different sub-pixel positions, calibrating the PSF of a first pixel on an image detector to obtain a reference PSF model; mapping the reference PSF model to a second pixel and fitting the imaging data of the second pixel to obtain an extended PSF model; wherein the extended PSF model represents the pixel response values corresponding to different positions of the center of the image spot from the center of the pixel; and positioning the wide-area point target images collected by the image detector by using the extended PSF model and the maximum likelihood method to obtain a positioning result.

The utility model relates to the field of X-ray perspective machines, and discloses an X-ray perspective machine capable of perspective at any angle, which comprises a mounting plate and a first mounting frame, vertical plates are fixedly connected to two sides of the front end of the upper surface of the mounting plate, a first servo motor is arranged on one side of the front end of the upper surface of the mounting plate, and a second servo motor is arranged on one side of the front end of the upper surface of the mounting plate. An output shaft of the first servo motor is fixedly connected with an adjusting threaded rod, and the side, away from the first servo motor, of the adjusting threaded rod penetrates through the vertical plate on one side and is rotationally connected with the vertical plate on the other side. According to the utility model, through cooperative use of the first servo motor, the second servo motor, the third servo motor and the fourth servo motor, a worker can conveniently adjust the position of the clamping block clamping a detected electronic component between the X-ray tube rack and the flat plate image detector; therefore, the detected electronic component can be observed from different angles in a perspective manner, and the accuracy of the detection result is improved.

The invention relates to the technical field of photoelectronic imaging, in particular to a snapshot spectrum camera shooting device and method.The device comprises an imaging modulation device, an acquisition device and a computing device.The imaging modulation device comprises an imaging lens, an optical filter array and a spatial modulation device; the optical modulator is configured to generate an optical signal with modulation at an image plane position of an imaging lens; the acquisition device comprises a two-dimensional image detector configured to convert an optical signal into image data and / or video data to generate a measurement image and / or a measurement video; and the computing equipment is connected with the acquisition equipment, and is configured to read and store the measurement image and / or the measurement video from the acquisition equipment, and invert the spectral image and / or the spectral video of the target scene from the measurement image and / or the measurement video. Therefore, the problems of difficulty in improving the spatial resolution, high cost and the like caused by exponential increase of on-chip encoder device cost and process complexity when pursuing higher spatial resolution in related technologies are solved.

Methods, apparatus, systems and articles of manufacture are disclosed. An example apparatus includes a thermal image detector to determine a heat blob count based on a frame of thermal image data captured in the media environment, an audience image detector to identify a face of an audience member based on a frame of audience image data captured in the media environment, the frame of audience image data corresponding to a field of view associated with at least one heat blob included in the heat blob count, and a people meter controller to cause a people meter, which is to emit a prompt for audience identification information, not to emit the prompt for at least a first time period after the audience member is identified.

Disclosed herein is a device (1) for inspecting a material (M), in particular leather, comprising a working plane (2) adapted to provide a support plane for the material (M), a control unit (C) adapted to manage the device (1), an illumination system (15) adapted to illuminate the material (M) on the working plane (2), and at least one image detector (30) adapted to capture an image of the material (M) on the working plane (2). The control unit (C) is configured to process the image captured by the image detector (30) and to generate a digital copy of the material (M) to be inspected wherein the apparatus (1) further comprises a stretching tool (10) configured to apply a stretch to the material (M) arranged on the working plane (2) such that defects can be identified even on the material (M) in the stretched state. (Figure 1)

The utility model discloses an automatic rod coil assembling and detecting production line which comprises transfer jig conveying belts at the upper end, the lower end and the right side end, magnetic core assembling machines are arranged above the two sides of the transfer jig conveying belt on the right side, and a mechanical arm is arranged between a winding machine and the magnetic core assembling machines. The transfer jig conveying belt at the lower end penetrates through the drying furnace and then reaches the image detector on the left side; the tray placing area is arranged at the upper end of the left side, and the tray placing robot is arranged between the tray placing area and the image detector. The utility model has the advantages that the coil cannot be damaged when falling off, and the relative position of the coil and the magnetic bar cannot be changed during drying; in addition, the magnetic bar can be inserted into the coil while changing shaking, and interference between the magnetic bar and the coil is prevented; in addition, a two-time positioning method is adopted, so that the accuracy of the coil insertion position is ensured.

An agricultural machine includes a vehicle, an image detector, memory, a processing circuit, and a steering control unit. The vehicle has at least one agricultural implement affixed thereto. The image detector is mounted to the vehicle and is configured to generate first image data. The memory stores at least a first trained model of a crop row detection neural network. The processing circuit is configured to generate a crop row prediction image using the first image data, the first trained model, and a convolutional neural network. The processing circuit is further configured to generate navigational parameters based at least in part on the crop row prediction. The steering control unit is configured to control movement of vehicle based on the navigational parameters.

The application discloses a kind of self-adapting coding imaging positioning method, its steps include:1) according to the actual coding pattern of the machining form of coding board, and according to the coding pattern, the dimension number of imaging detector projection and the dimension number of expected imaging generation decoding matrix;2) the projection matrix of the imaging detector is generated, and the corresponding pixel index position of the bad pixel and the corresponding pixel of slit dead zone of imaging detector in projection matrix is obtained;3) according to pixel index position, the pixel value corresponding to the corresponding matrix element in decoding matrix is set to 0, represents that ray does not pass;When the coded pattern projection is formed on imaging detector by the modulation of the coded board after the ray bundle emitted by the ray source, the coded pattern projection is decoded and calculated using the corrected decoding matrix, and the decoding image is generated;4) the position and azimuth angle of the corresponding hotspot of the ray source are positioned from the decoding image.The application eliminates artifact, and improves positioning accuracy.

This invention relates to the field of spacecraft fire prevention technology, and discloses a fire prevention and control system and extinguishing method for hypergravity environments. The system includes: a cabin with an external accelerometer and internal smoke detectors, temperature sensors, and flame image detectors; and an extinguishing system housed within the cabin and electrically connected to a controller. The controller controls the extinguishing system to extinguish fires and / or trigger alarms based on detection data from the accelerometer, smoke detector, temperature sensor, and flame image detector. This invention couples the accelerometer to the extinguishing system, allowing the controller to control the extinguishing system based on the hypergravity multiple of the cabin, particularly adjusting the spray pressure of the air curtain nozzles and jet nozzles. This enables the extinguishing system to adapt to hypergravity environments, solving the technical problems of inaccurate initial fire detection, delayed response, and low extinguishing efficiency in hypergravity environments.

The invention provides an optical imaging image spot two-dimensional position measurement precision limit optimization method, device and equipment, relates to the technical field of optical imaging precision measurement, and aims to realize optical imaging image spot two-dimensional position measurement precision limit analysis of a small-size PSF system. The method comprises the steps of performing approximation of phase gradient distribution of a PSF in a pixel space according to an energy concentration distribution characteristic of an imaging image spot of a small-size point spread function (PSF) optical system, and obtaining a gradient distribution approximation result of the PSF; according to the gradient distribution approximation result of the PSF, estimating the two-dimensional position measurement precision limit of the imaging image spot of the small-size PSF optical system on the image detector; and calculating an implementation condition that the two-dimensional position measurement precision limit meets the minimum value, and calculating analytic estimation of the two-dimensional position measurement optimal precision limit according to the implementation condition and the two-dimensional position measurement precision limit.

A machine tool (1) comprises a table (12) on which a workpiece is placed, a main shaft (16) on which a tool (17) is mounted, a movement mechanism (18) which moves the table (12) and the tool (17) relative to one another, and a control device (20) which controls the movement mechanism (18), said machine tool (1) including: a reference instrument (31) installed in a first portion (table (12)) of the machine tool (1), said reference instrument (31) having an optical scale disposed unidirectionally; an imaging detector (32) installed in a second portion (main shaft head (15)) which moves relative to the first portion due to the movement mechanism (18), said imaging detector (32) performing detection on an image of the reference instrument (31); and an error correction device (33) which reads the optical scale from the detection image from the imaging detector (32), measures a positional error between the first portion and the second portion, and corrects the operation of the movement mechanism (18) on the basis of the measured positional error.

A fraudulent image detector (4) comprising: a first segmenter (6) configured to calculate first probability data from an image showing personal identifiable information of an individual, the first probability data indicating, for each pixel of the image, a probability that the pixel shows a security pattern; a second segmenter (8) configured to calculate second probability data from the image, the second probability data indicating, for each pixel of the image, a probability that the pixel is part of a foreground region showing the personal identifiable information or is part of a background region showing no personal identifiable information;a classifier (12) configured to calculate score data from the first probability data and the second probability data, the score data indicating a probability that the background region as a whole shows a security pattern and that the foreground region as a whole shows no security pattern; and an output module (14) configured to output a result indicating that the image is fraudulent whenever the probability indicated by the score data is greater than a threshold.;

The utility model discloses a thermal neutron imaging detector based on a TFT area array detector, comprising a housing, a TFT substrate and a scintillator layer, the TFT substrate and the scintillator layer are both arranged in the housing, the TFT substrate comprises a substrate layer and an optical adhesive layer, the scintillator layer is arranged on the optical adhesive layer, and the scintillator layer is arranged on the substrate layer. The optical adhesive layer is matched with the scintillator layer to optimize optical signal transmission and improve imaging resolution; according to the TFT area array detector, the optical adhesive layer is arranged on the surface of the substrate layer of the TFT area array detector, and the optical adhesive layer is combined with the scintillator layer, so that optical signal transmission is optimized, and the imaging resolution is improved.

The present disclosure provides a modular radiation therapy apparatus comprising a plurality of modules configured to sequentially interlock within one another in an annular arrangement, wherein the plurality of modules are individually extractable from the annular arrangement and at least a subset of the plurality of modules comprise computing elements configured to communicate with one another, the plurality of modules comprising a collimator module comprising a multi-leaf collimator (MLC) and at least one sensor, a linear accelerator (LINAC) module comprising at least one of a magnetron or a klystron, at least one imaging module comprising at least one of an image detector, an imaging source, a magnetic imaging system, a single photon emission computed tomography (SPECT) system, or a positron emission tomography (PET) system, a patient tracking module, a cooling module, and a vacuum module, and performing at least one of: monitoring a respective status of the plurality of modules via onboard sensors and computing elements to determine whether any module is in an error state and provisioning status information and module identifiers to a remote computing environment; or distributing computational workloads among the plurality of modules and communicating with a remote computing environment to offload processing tasks using federated processing operations.

A calibration target for use with a radiographic image detector includes a target body securable to the image detector and a plurality of radiopaque linear markers, e.g. wires, ixed to the target body, wherein access to the image detector by incident radiation is at least partially blocked by the plurality of linear markers. By using the geometric properties of wires and advanced detection techniques, a precise calibration suitable for high-quality, volumetric three-dimensional CT reconstruction from biplanar X-ray images is achieved.

A kind of large field of view optical system small distortion testing device and method, belong to optical system parameter detection field.Grid plate is vertically placed on optical platform, measured large field of view optical system is placed at working distance, large scale area array image detector is placed on the focal plane of measured large field of view optical system, grid plate, measured large field of view optical system optical axis and large scale area array image detector are concentrically arranged, large scale area array image detector is connected with digital-analog converter signal, digital-analog converter is connected with computer equipped with digital image processing software signal.When testing, large scale area array image detector realizes high frequency sampling to imaging information using the characteristics of its multiple pixels, then imaging information is converted into digital image after being converted by digital-analog converter, digital image is preprocessed and edge positioning by digital image processing software, determines actual imaging position and theoretical imaging position, calculates relative distortion value.The application can make the test precision of relative distortion reach below 1%.

A projection image adjustment method is applied to a projector device electrically connected with an external computer apparatus. The projection image adjustment method includes a projection lens of the projector device projecting a projection image which is transmitted from an image output source of the external computer apparatus towards a projection screen, an image detector of the projector device acquiring a detection image relevant to the projection image, an operation processor of the projector device analyzing the detection image to find borders and a border ratio of the projection screen, and transforming the border ratio into a control command for transmitting towards the external computer apparatus, so that the external computer apparatus adjusts an output image ratio of the image output source in accordance with the border ratio.

The invention provides a medium / long wave dynamic regulation and control filter for an infrared detector. The upper-layer rotatable superstructure unit layer is composed of a lower-layer fixed superstructure unit layer, and the upper-layer rotatable superstructure unit layer is driven by a micro stepping motor to rotate around a central shaft of the silicon nitride ceramic bearing. And multi-band dynamic regulation and control: through rotation of an upper-layer medium, medium wave and long wave dynamic detection of different bands can be realized. Through the design of the resonant ring units and the optimization of geometric parameters, the broadband high transmission of a target wave band and the high suppression of a non-target wave band are realized, the interference of the non-target wave band is filtered out, and the signal-to-noise ratio is improved. According to the invention, a traditional multi-stage optical filter stack or light splitting assembly is abandoned, and multiband filtering and switching are realized through a single metamaterial device. The light source is bonded to a staring type imaging detector (such as a HgCdTe focal plane array) through epoxy resin, additional light path adjustment is not needed, and integration complexity and cost are reduced.