117results about How to "Short scan time" patented technology

A method for recognizing and determining the position of at least one teat of a milking animal, including the steps: moving a scanning head including a light source to a region containing the teat or teats, capturing at least one image formed by said light, evaluating the image or images so as to determine if each image describes said teat or teats. The scanning head (1) is moved to a fixed initial position (A) in the room which is under the animal and clearly in front of an udder and thereby the teats of all known relevant animals, thereafter the scanning head is moved in determined steps (A-J) under the animal: upwards towards the animal, downwards, backwards towards the udder, upwards, downwards etc., while carrying out the scanning procedure. The invention also concerns an apparatus carrying out the process and a milking robot including such an apparatus.

The invention relates to an indoor scene three-dimensional reconstruction method based on a single depth vision sensor. The method is technically characterized by including the following steps of firstly, continuously scanning a whole indoor scene through the single depth vision sensor; secondly, conducting preprocessing including denoising, hole repairing and the like on collected depth data to obtain smooth depth data; thirdly, calculating point cloud data corresponding to the current depth frame according to the depth data collected in the second step; fourthly, conducting registration on point cloud obtained through different viewpoint depth frames to obtain complete point cloud of the indoor scene; fifthly, conducting plane fitting, achieving segmentation of the special point cloud, and establishing an independent and complete three-dimensional model of each object in the indoor scene. Scanning devices used by the method are simple; scanned data information is comprehensive, and the point cloud registration accuracy calculation efficiency is effectively improved; finally, a complete and high-quality three-dimensional model set with a geographic structure and a color map can be established for the indoor scene.

This invention describes the combination of SSFP, a method for accelerating data acquisition, and an eddy current compensation method. This synergistic combination allows acquisition of images with high signal-to-noise ratio, high image contrast, high spatial and temporal resolutions, and good immunity against system instabilities. k-t BLAST and k-t SENSE are the preferred method for accelerating data acquisition, since they allow high acceleration factors, but other methods such as parallel imaging and reduced field-of-view imaging are also applicable. Typical applications of this invention include cine 3D cardiac imaging, and 2D real-time cardiac imaging.

The invention provides a generative adversarial network-based trajectory loopback detection optimization method, which comprises the following steps that: a data collection device acquires multi-target information and outputs a target coordinate position, a posture, a trajectory and a high-low resolution image set; constructing a generative adversarial network reconstruction production simulationtarget which comprises a first generator, a second generator, three local discriminators and a global discriminator, and outputting a simulation high-low resolution image set of a coordinate position,a posture, a track and a real target of the simulation target; loop detection is carried out to correct a target trajectory: a key frame is detected, a feature repetition rate is calculated, and a dictionary is constructed for the same target based on a two-dimensional high-low resolution image set, a low resolution image set and a three-dimensional RGB point cloud to judge a loop; and optimizingthe target trajectory based on the loopback frame, and outputting an optimized trajectory. The optimal trajectory is found while the trajectory is updated in real time, and accurate information is provided for unmanned control, target detection and recognition, feasible region detection, path planning and the like.

The invention provides a target trajectory optimization method based on a DS evidence theory, and the method comprises: a data collection device obtaining multi-target information, and outputting a target coordinate position, a posture, a trajectory and a high-low resolution image set; constructing a generative adversarial network to reconstruct a simulation target, and outputting a simulation high-low resolution image set of the coordinate position, posture and track of the simulation target and a real target; detecting a key frame calculation feature repetition rate, constructing a dictionary judgment loop based on the two-dimensional high-low resolution image set and the three-dimensional target RGB point cloud, and realizing trajectory optimization; establishing a sample matrix to represent an output trajectory, including a real target trajectory, a generative adversarial network output simulation target trajectory, and an optimized trajectory after loopback detection; and performing correctness judgment on the trajectory based on the spatial features, the image features and the trajectory information by utilizing a DS evidence theory, and outputting an optimal trajectory. Theoptimal trajectory is output, and accurate information is provided for unmanned control, target recognition and detection, region detection, path planning and the like.

The invention relates to a human body three-dimensional model synthesis and body data obtaining method, and solves the technical problems of high cost, poor user experience and large measurement dataerror of an existing method. The method comprises the steps of S1: scanning a tested person to obtain a plurality of depth images, a body weight and human body resistivity; S2: obtaining an original three-dimensional model A of the tested person; S3: sending the original three-dimensional model A, the body weight and the human body resistivity of the tested person to a cloud algorithm server for performing optimization and computing, thereby obtaining a three-dimensional model B with mark information; S4: measuring the three-dimensional model B and obtaining body data of the tested person in combination with a body height, the human body resistivity and the like of the tested person; and S5: storing the three-dimensional model B and the body data of the tested person in a cloud center database for subsequent use. The method is low in equipment cost and good in user experience, and can be widely applied to the application fields of garment customization, body shape tracking, health monitoring and the like.

The invention relates to a printing plate quality detection system and method. The system comprises a detection platform, an electric device, an image acquisition device and an image processing device, wherein the image acquisition device comprises an annular optical imaging light source, an area-array camera and a laser displacement sensor; the annular optical imaging light source comprises an annular frame body, a heat radiation sheet arranged on the outer side wall of the annular frame body and a plurality of LED (Light Emitting Diode) light sources arranged on the inner wall of the annular frame body; the annular optical imaging light source is used for uniformly illuminating in a focal plane of the area-array camera; the area-array camera is used for automatically scanning a detection object which is horizontally arranged on the detection platform under the irradiation of the annular optical imaging light source to acquire a high-quality image in the horizontal plane and carry out image pattern detection; the area-array camera or the laser displacement sensor is used for acquiring the depth of the detection object in the vertical direction so as to carry out depth measurement; the image processing device is used for carrying out data processing and analysis on image information to finish the quality detection. The system and the method have the advantages of high detection precision, high detection speed and high reliability.

A fluorescent material for a scintillator to be used in a radiation detector is provided. The fluorescent material is designed to have a high fluorescent intensity and a low level of afterglow a short term of 1 to 300 ms after the termination of X-ray radiation.The above fluorescent material contains Ce as an activator. In addition, the material must contain at least Gd, Al, Ga, O, Fe, and a component M. The component M is at least one of Mg, Ti, and Ni. In addition, the composition of the material must be expressed by the general formula:(Gd1-x-zLuxCez)3+a(Al1-u-sGauScs)5−aO12 wherein 0≦a≦0.15, 0≦x≦0.5, 0.0003≦z≦0.0167, 0.2≦u≦0.6, and 0≦s≦0.1, and wherein, regarding the concentrations of Fe and M, Fe: 0.05≦Fe concentration (mass ppm)≦1, and 0≦M concentration (mass ppm)≦50.

The invention discloses an LCD panel, a drive method and an LCD device. The LCD panel comprises a plurality of thin film transistors, scanning lines and data lines which are arranged in a criss-cross mode, a scanning drive chip driving the scanning lines and a data drive chip driving the data lines. Gate electrodes of each row of the thin film transistors are connected with one scanning line, and source electrodes of each line of the thin film transistors are connected with one data line. A drain electrode of each thin film transistor is connected with a pixel electrode. The scanning drive chip comprises a compensation drive unit which is coupled with the scanning lines. When or after the compensation drive unit drives the scanning drive chip to drive the corresponding thin film transistors of the current scanning line to be conducted, the corresponding thin film transistors of the next scanning line are driven to be conducted. When or before the corresponding thin film transistors of the current scanning line receive data signals of the data drive chip, the corresponding thin film transistors of the next scanning line are closed. The LCD panel, the drive method and the LCD device can reduce power consumption of a data drive circuit.

The invention discloses a fast magnetic resonance heart real-time cine imaging method and a fast magnetic resonance heart real-time cine imaging system. The fast magnetic resonance heart real-time cine imaging method comprises the following steps: under-sampling all frames of heart data collected by each channel in parallel through use of a staggered collection method to get under-sampled data; down-sampling the under-sampled data through use of a variable-density sampling method to get an under-sampled signal; reconstructing the under-sampled signal through use of a compressed sensing reconstruction method to get an image with wraparound artifacts; converting the image with wraparound artifacts into K-space data through Fourier transform, and under-sampling the K-space data in parallel through use of the staggered collection method to get under-sampled K-space data; and reconstructing the under-sampled K-space data through use of a GRAPPA reconstruction method to get an imaging image without wraparound artifacts. According to the fast magnetic resonance heart real-time cine imaging method and the fast magnetic resonance heart real-time cine imaging system, wraparound artifacts can be removed without additionally collecting K-space data, an image of good quality can be obtained at higher acceleration multiple, and there is no need for a subject to hold his / her breath during scanning.

The invention provides a human body three-dimensional data collecting system and method based on the light coding technology. The human body three-dimensional data collecting system comprises a rotary disc. Supports are arranged on the periphery of the rotary disc, a whole-body scanner, a half-body scanner and a face five-sense-organ scanner are installed on the three supports respectively, data lines at the tail ends of the three scanners are connected into a computer, and a matched software tool for model collecting, fusing, repairing and strengthening is arranged in the computer. The human body three-dimensional data collecting system is simple in structure, low in cost, high in accuracy and short in scanning time, the advantages of the scanners in different types are combined, division operation is adopted, the aim is explicit, and high-accuracy human body characteristic three-dimensional models of the five sense organs of the human body face, the head outline, hair details, the whole-body surface outline and the like can be obtained; a high-accuracy human body three-dimensional model can be obtained by fusing and splicing the characteristic three-dimensional models collected through the different scanners through software, and follow-up model processing is avoided; the multiple scanners work at the same time, and the scanning time is greatly shortened.

A semiconductor integrated circuit inspecting apparatus inspecting a terminal provided on a mount surface of a semiconductor integrated circuit includes a light emitter, a photographing unit and an inspector. The light emitter emits a linear light obliquely to the mount surface. The photographing unit photographs the mount surface to which the light is emitted to output a photograph signal. The inspector inspects the terminal in accordance with the photograph signal. The photographing unit has N (N is a positive integer) photographing elements. The photograph signal is outputted respectively only from M (M is a positive integer smaller than the N) photographing elements of the N photographing elements.

The invention discloses an organism tissue detecting device. The device comprises a housing, and a movable antenna array; the antenna array can be rotate together with the housing to emit and receive an electromagnetic wave signal; the antenna array occupies part of the surface area of the housing. According to the organism tissue detecting device, expensive RF switch array is avoided, so that the antenna is saved. The organism tissue detecting device is able to receive scattering signals with relatively high consistency of strength level, and moreover, the quick scanning is ensured, and therefore, the scanning efficiency is raised. The invention also discloses organism tissue detecting system and method.

The invention discloses an image reconstruction method based on three-dimensional weighted filtering back projection and statistical iteration. The method comprises the following steps: firstly obtaining projection data, obtaining a projection angle, a taper angle and a fan angle of a ray corresponding to each projection data, then pre-weighting the projection data, then carrying out line-by-linefiltering on the pre-weighted projection data, then carrying out three-dimensional weighting, and carrying out back projection to obtain an initial reconstructed image, and calculating projection estimation values at all angles according to the obtained reconstructed image, comparing the projection estimation values with actual projection data, calculating an error, correcting the reconstructed image according to the error, and repeatedly iterating the process until the reconstructed image meeting the condition is obtained.

The invention discloses an ultra-wideband radar system and a method for realizing single-channel multi-frequency-point simultaneous transmission and reception. The ultra-wideband radar system comprises a control processing module, a transceiving antenna, a transmitter branch circuit and a receiver branch circuit, wherein the transmitter branch circuit and the receiver branch circuit are arranged between the control processing module and the transceiving antenna; the transmitter branch circuit receives a control command of the control processing module and generates a required multi-frequency-point digital baseband signal, carries out mixing, digital-to-analog conversion and quadrature up-conversion in sequence, outputs the required multi-frequency-point digital baseband signal and transmits the required multi-frequency-point digital baseband signal by means of the transceiving antenna; and the receiver branch circuit receives a multi-frequency-point analog echo signal from the transceiving antenna, carries out quadrature down-conversion, analog-to-digital conversion and mixing in sequence, and then outputs a multi-frequency-point baseband signal to the control processing module. The method is a method for realizing single-channel multi-frequency-point simultaneous transmission and reception. The ultra-wideband radar system and the method can realize simultaneous transmission and reception of single-channel multi-frequency-point signals, and have the advantages of small frequency interval of stepping frequency, long maximum operating distance, short scanning time and the like.

The invention relates to a method of Dixon-type MR imaging. The method comprises the steps of—generating a first imaging sequence for producing first MR echo signals at a first echo time, such that contributions from MR signals emanating from water protons and MR signals emanating from fat protons to the first MR echo signals are essentially in phase,—acquiring the first MR echo signals at a first signal-to-noise ratio,—generating a second imaging sequence for producing second MR echo signals at a second echo time, such that contributions from MR signals emanating from water protons and MR signals emanating from fat protons to the second MR echo signals are at least partially out of phase,—acquiring the second MR echo signals at a second signal-to-noise ratio which is different from the first signal-to-noise ratio, and—reconstructing a MR image from the first and second MR echo signals, wherein signal contributions from water protons and fat protons are separated. Moreover the invention relates to a MR device and to a computer program to be run on a MR device.

The invention discloses an adult male series mannequin building method based on oval Fourier description. The method includes the steps that a statistical sampling method is utilized to determine the mean value of the size of control parts of a target group; a certain tolerance range is set for the size of each control part, conditional sampling is conducted according to the mean value and the tolerance ranges, three-dimensional scanning is conducted on sampled samples, and three-dimensional model data of the samples are acquired; the three-dimensional scanning data of each sample are converted into a set of horizontal section contour curves which are arranged at uniform intervals, and each horizontal section curve aligns with the front center or the rear center of the human body, the aligned contour curves are converted into the oval Fourier series form for description; the three-dimensional mean type of the sampled group is calculated according to the characteristics of oval Fourier, and a three-dimensional virtual mannequin model is obtained. The method has the advantages that the principle is simple, the method is easy to achieve, efficiency is high and accuracy is good.

Two-dimensional or three-dimensional, time-resolved MR frame images are acquired during a dynamic study of a subject. A composite MR image is produced and this is used to reconstruct each image frame by weighting the backprojection of each projection view acquired for that image frame. The composite image may be reconstructed from views acquired separately, or it may be produced by combining views acquired during the course of the dynamic study. A number of different clinical applications of the method are described.

The invention relates to a PET imaging system and an imaging method thereof. The PET imaging method comprises the following steps: dividing a predetermined scanning section into one or more sub-scanning areas, wherein each sub-scanning area corresponds to a scanning bed; prejudging whether or not there is physiological movement in the corresponding sub-scanning area for each scanning bed; if yes, obtaining PET data of the sub-scanning area corresponding to the scanning bed in a first time period through a first data acquisition mode and obtaining the gated image of the sub-scanning area at least based on the PET data in the first time period; if not, obtaining the PET data of the sub-scanning area corresponding to the scanning bed in a second time period through a second data acquisition mode and obtaining the static image of the sub-scanning area according to the PET data in the second time period. The PET imaging system comprises a dividing unit, a judging unit, a scanning unit and a reconstruction unit, and is used for obtaining the static or gated image of the sub-scanning area through the imaging method.

A method for defining scanning parameters of a CT scan of a region of interest of an examination object (O) using a CT system is described. In an embodiment of the method, external image capture of external features of the examination object is carried out using an additional image capture unit. In addition, at least one scanning parameter in the axial direction of the CT system is determined on the basis of the external image capture. Finally, a CT scan is performed using the at least one scanning parameter determined. A CT scan range defining device is additionally described. A computed tomography system is also described.

The invention relates to a method of MR imaging of an object (10) placed in an examination volume of a MR device (1). The method comprises the steps of: subjecting the object (10) to an imaging sequence for acquiring MR signal data, wherein the MR signal data are acquired as a function of k-space position and time by using an irregular k-space sampling pattern with sub-sampling of k-space; reconstructing MR image data from the MR signal data, which MR image data comprise spatial dimensions and a frequency dimension, sparsity of the MR image data in a transform domain being exploited for suppressing sub-sampling artefacts in the MR image data. Moreover, the invention relates to a MR device (1) and to a computer program.

A magnetic resonance image is generated by executing a scan sequence that is determined by at least one scan parameter. A first value of the at least one scan parameter is determined for a first subregion of an examination region, and a second value of the at least one scan parameter is determined for a second subregion of the examination region. The determination of the first value and the determination of the second value is implemented so that a value of a physical variable influenced by the first value and the second value of the at least one scan parameter does not transgress a pre-set threshold value. Subsequently, the scan sequence is executed by a magnetic resonance scanner and a magnetic resonance image is generated. The threshold value can be based, for example, on technical efficiency of the scanner and / or a physiological limitation of an examination object.

The present invention relates to a device (1) permitting an early detection, without measurement of the fluorescence, of colonies resulting from the multiplication of micro-organisms present in a sample to be tested, said device (1) comprising: - a substantially flat and horizontal detection surface (5), on which at least one support (3) for growing the micro-organisms in the form of colonies is arranged immobile, this support (3) being of the type membrane or agar medium, - a detection system (7), such as a linear scanner, mounted movable and flat for scanning the whole or part of said surface (5), including at least one CCD sensor (8), which an optical system comprised of at least one lighting (9) and at least one optical means, such as a lens (10), is associated with, the CCD sensor (8) of the detection system (7) has a resolution higher than or equal to 2400 dpi, and the detection system (7) permits the detection by imaging of colonies having a diameter smaller than 50 [mu]m through a useful magnification higher than or equal to 60.

An ECG-prep scan is used to set an optimum time phase in both systole and diastole of the heart. At each of the different time phases, an imaging scan is started to acquire a plurality of sets of echo data. An artery / vein visually separated blood flow image is produced from the echo data. The imaging scan uses a half-Fourier technique, for example. This provides high-quality blood flow images with shorter scan time, without injecting a contrast medium. Additionally, with a readout gradient pulse applied substantially parallel with a direction of slowly flowing blood, a scan is performed in synchronism with an optimally determined cardiac time phase. The readout gradient pulse has a dephasing pulse for enhancing differences in a flow void effect depending on blood flow velocities. This enables slow-speed flows, such as blood flows in the inferior limb, to be depicted without fail.

A fluorescent material for a scintillator to be used in a radiation detector is provided. The fluorescent material is designed to have a high fluorescent intensity and a low level of afterglow a short term of 1 to 300 ms after the termination of X-ray radiation.The above fluorescent material contains Ce as an activator. In addition, the material must contain at least Gd, Al, Ga, O, Fe, and a component M. The component M is at least one of Mg, Ti, and Ni. In addition, the composition of the material must be expressed by the general formula:(Gd1-x-zLuxCez)3+a(Al1-u-sGauScs)5−aO12 wherein 0≦a≦0.15, 0≦x≦0.5, 0.0003≦z≦0.0167, 0.2≦u≦0.6, and 0≦s≦0.1, and wherein, regarding the concentrations of Fe and M, Fe: 0.05≦Fe concentration (mass ppm)≦1, and 0≦M concentration (mass ppm)≦50.

Problem:The problem is to provide a fluorescent material for a scintillator to be used in a radiation detector. In view of this, the fluorescent material must have a high fluorescent intensity and a low level of afterglow 1 to 300 ms after the termination of X-ray radiation.Solution:The above problem is solved in that the above fluorescent material contains Ce as an activator. In addition, the material contain at least Gd, Al, Ga, O, Si, and a component M. The component M is at least one of Mg, Ti, and Ni. In addition, the composition of the material must be expressed by the general formula:(Gd1−x−zLuxCez)3+a(Al1−u−sGauScs)5−aO12 wherein 0≦a≦0.15, 0≦x≦0.5, 0.0003≦z≦0.0167, 0.2≦u≦0.6, and 0≦s≦0.1, and wherein, regarding the concentrations of Si and M, 0.5≦Si concentration (mass ppm)≦10, and 0≦M concentration (mass ppm)≦50.

The invention discloses a collimating optical system, based on elliptical mirror focusing, enabling high-resolution rapid scan imaging. The system comprises a flat mirror, a condenser and a reception antenna. The condenser is an elliptical mirror. A wedge mirror is arranged between the elliptical mirror and the reception antenna. The wedge mirror receives reflected light information of the elliptical mirror, and reflects the reflected light information to the reception antenna. The flat mirror is a pitching flat mirror, the mirror surface of which faces a to-be-measured object to pitch and swing. The wedge mirror is a rotary wedge mirror, the wedge surface of which faces the elliptical mirror and the reception antenna to rotate. The system helps to overcome the disadvantages that terahertz waveband close range passive safety check imaging is low in resolution and long in time. The elliptical reflector, the rotary wedge mirror and a detector array are combined together to achieve high resolution and high-efficiency quick safety check imaging. The collimating optical system is simple in control and high in precision, and can be widely applied to the close range safety check imaging field in public places such as airports, subways and ferry wharfs.

The invention discloses a robot three-dimensional vision system and method for shoe sole and vamp scanning operation. The system comprises a visual scanning system, a robot, a three-dimensional camera, a related tool clamp, an industrial personal computer, an upper computer controller, a shoe body model and a robot working support. The visual scanning system is fixedly connected with a robot; thevisual scanning system is used for scanning a shoe body model to obtain a contour point position and transmitting the contour point position to the industrial personal computer; the industrial personal computer is used for calculating to obtain a track through upper computer software; and the visual scanning system is used for operating the shoe body model fixed on a robot working bracket througha three-dimensional camera. According to the method, the glue injection line at the joint of the shoe body and the inclined plane can be accurately obtained, different requirements can be calculated according to the glue injection line, main shoemaking industries such as glue spraying and polishing can be completed according to different processes and modes, shoe body data information is obtainedthrough three-dimensional camera scanning, the scanning time is short, the efficiency is high, the scanning beat is smaller than 12 seconds per shoe, and the scanning precision is high.