79results about How to "Increase sampling density" patented technology

Methods and systems for performing three dimensional LIDAR measurements with multiple illumination beams scanned over a three dimensional environment are described herein. In one aspect, illumination light from each LIDAR measurement channel is emitted to the surrounding environment in a different direction by a beam scanning device. The beam scanning device also directs each amount of return measurement light onto a corresponding photodetector. In some embodiments, a beam scanning device includes a scanning mirror rotated in an oscillatory manner about an axis of rotation by an actuator in accordance with command signals generated by a master controller. In some embodiments, the light source and photodetector associated with each LIDAR measurement channel are moved in two dimensions relative to beam shaping optics employed to collimate light emitted from the light source. The relative motion causes the illumination beams to sweep over a range of the three dimensional environment under measurement.

The invention discloses a three-dimensional optimizing route selection method based on an airborne laser radar. The method comprises the following steps of: carrying out flight design according to a feasible route of a line, and acquiring flight field data by the laser radar according to design parameters; carrying out united computation on laser ranging data and POS system positioning data to obtain laser point cloud data through pre-processing the data; post-processing the data to obtain a point cloud classification map, a digital elevation model (DEM), a digital surface model (DSM), a contour line and a digital orthoimage map (DOM); importing into a three-dimensional optimizing route selection system, selecting a line route, checking peripheral landform of a line corridor, and carrying out optimization design on the line; combining with a three-dimensional image and a plane section, carrying out operations of pre-arranging poles and arranging poles in a route selection software, and outputting an image route diagram; and drawing the plane section of the route, and carrying out alignment survey. The method utilizes the section view and the orthoimage in the three-dimensional optimizing route selection system to realize the operations of pre-arranging the poles and arranging the poles, so as to generate a plane section diagram needed by power industry department, and the operation efficiency of route selection is improved.

A sample archive method and system implement a plurality of sample carriers configured to support a plurality of sample nodes in a predetermined spatial relationship, sample storage devices for selectively placing the plurality of sample carriers in an archive, and sample node removal apparatus for locating and removing selected ones of the plurality of sample nodes. Alternative embodiments are disclosed wherein the sample node removal apparatus comprises a laser and a mechanical clipping tool, which may be manually operated or automated. An optical component may be operative to detect the location of selected sample carriers in the archive, selected ones of the plurality of sample nodes, or both. A positioning component may position the sample node removal apparatus responsive to signals transmitted by the optical component. Various apparatus and methods of archiving samples and preparing the same for analysis are also disclosed.

Methods of characterizing a nucleic acid library by digital assay.

A high-definition map system receives sensor data from vehicles travelling along routes and combines the data to generate a high definition map for use in driving vehicles, for example, for guiding autonomous vehicles. A pose graph is built from the collected data, each pose representing location and orientation of a vehicle. The pose graph is optimized to minimize constraints between poses. Points associated with surface are assigned a confidence measure determined using a measure of hardness / softness of the surface. A machine-learning-based result filter detects bad alignment results and prevents them from being entered in the subsequent global pose optimization. The alignment framework is parallelizable for execution using a parallel / distributed architecture. Alignment hot spots are detected for further verification and improvement. The system supports incremental updates, thereby allowing refinements of sub-graphs for incrementally improving the high-definition map for keeping it up to date

Methods and systems for performing three dimensional LIDAR measurements with multiple illumination beams scanned over a three dimensional environment by one or more optical phase modulation devices are described herein. In one aspect, illumination light from each LIDAR measurement channel is emitted to the surrounding environment in a different direction by an optical phase modulation device. The optical phase modulation device also directs each amount of return measurement light onto a corresponding photodetector. The illumination pulse output of each LIDAR measurement channel is synchronized with commanded changes of state of each corresponding optical phase modulation device. In some embodiments, each optical phase modulation device is associated with a single LIDAR measurement channel. In some embodiments, multiple LIDAR measurement channels are associated with a single modulation device. In some embodiments, a one dimensional optical phase modulation device is employed. In other embodiments, a two dimensional optical phase modulation device is employed.

A method and apparatus for process control in the processing of a substrate is disclosed in the present invention. Embodiments of the present invention utilize a first analysis tool to determine changes in a substrate's geometry. The substrate geometry data is used to generate sampling plan that will be used to check areas of the substrate that are likely to have errors after processing. The sampling plan is fed forwards to a second analysis tool that samples the substrate after it has been processed. It is emphasized that this abstract is provided to comply with the rules requiring an abstract that will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims.

Feature-matching methods for attempting to match visual features in one image with visual features in another image. Feature-matching methods disclosed progressively sample the affine spaces of the images for visual features, starting with a course sampling and iteratively increasing the density of sampling. Once a predetermined threshold number of unambiguous matches has been satisfied, the iterative sampling and matching can be stopped. The iterative sampling and matching methodology is especially, but not exclusively, suited for use in fully affine invariant feature matching applicants and can be particularly computationally efficient for comparing images that have large differences in observational parameters, such as scale, tilt, object-plane rotation, and image-plane rotation. The feature-matching methods disclosed can be useful in object / scene recognition applications. The disclosed methods can be implemented in software and various object / scene recognition systems.

A mass spectrometer for efficiently ionizing a sample with less carry-over. The ratio of the amount of sample gas to that of a whole headspace gas is increased by decreasing the pressure inside of a sample vessel in which the sample is sealed thereby efficiently ionizing the sample.

Methods and systems for performing three-dimensional (3-D) LIDAR measurements with multiple illumination beams scanned over a 3-D environment are described herein. In one aspect, illumination light from each LIDAR measurement channel is emitted to the surrounding environment in a different direction by a beam scanning device. The beam scanning device also directs each amount of return measurement light onto a corresponding photodetector. In some embodiments, a beam scanning device includes a scanning mirror rotated in an oscillatory manner about an axis of rotation by an actuator in accordance with command signals generated by a master controller. In some embodiments, the light source and photodetector associated with each LIDAR measurement channel are moved in two dimensions relative to beam shaping optics employed to collimate light emitted from the light source. The relative motion causes the illumination beams to sweep over a range of the 3-D environment under measurement.

The invention discloses a new asymmetrical panoramic video mapping method and a corresponding inverse mapping method. The mapping method comprises the steps of mapping a sphere corresponding to a panoramic image or a video A into a two-dimensional image or a video B; projecting the sphere to an isosceles rectangular pyramid with a quadrate bottom surface, and then projecting the rectangular pyramid to a plane; adopting isometrical projection for a region of a main viewpoint in projection and adopting a higher sampling density to ensure high video quality of the region of the main viewpoint; and adopting a lower sampling density for a region of non-viewpoint to save a code rate. With the asymmetrical mapping technology for the panoramic video, the resolution ratio of other regions in the video is greatly reduced and the code rate needed for encoding of a virtual-reality video is effectively saved on the premise of guaranteeing the video quality of the region of the main viewpoint unchanged. The asymmetrical mapping technology for the panoramic video provides a method for mapping the video from the plane to the sphere; and through the method, a planar video can be mapped back to thesphere for rendering and viewing.

Provided is an SPEN (spatiotemporally-encoded) single-scanning magnetic resonance imaging spiral sampling and reconstructing method, relating to a magnetic resonance imaging method. 90 DEG linear scanning pulses and 180 DEG linear scanning pulses combine with corresponding SPEN gradients, and in a trigger period, protons in a space spin to obtain a quadratic phase relevant with a spatial position; in a sampling period, a spiral sampling gradient after optimization collets data, and obtains spatial domain magnetic resonance imaging data with T2*weighting in a superfast speed; and finally, spiral sampling data are reconstructed through a specific grid algorithm and a super-resolution reconstructing method based on compression perception, so as to obtain super-resolution high quality magnetic resonance images. The method greatly improves the image quality of SPEN single-scanning imaging, and provides a great imaging tool for the fields requiring superfast imaging.

Systems and methods of providing biological and non-biological samples, as well as selected analyses thereof, to a remote client are disclosed. In some embodiments, such systems and methods include some or all of the following: maintaining a sample archive comprising a plurality of discrete sample nodes; receiving a request for a sample or an analysis thereof from a remote client, the request including identification of a selected sample node from the plurality of discrete sample nodes and identification of a selected assay; retrieving the selected sample node from the archive; preparing the selected assay; and performing the selected assay for the selected sample node. As noted above, samples and results of analyses may be transmitted to the remote client. In some embodiments, a system and method may retrieve, prepare, and package in excess of 100, 200, or 500 samples per day.

The invention discloses a tunnel section outline measuring method and device based on vision measurement. The measuring method comprises the steps that a structural light source is installed on a measuring trolley to ensure that structural plane light emitted by the structural light source and the inner wall of a detected tunnel intersect, and a marking light bar used for indicating the section outline of the inner wall of the tunnel is formed on the inner wall; a plurality of graph sensors are installed on the measuring trolley, framing ranges of the graph sensors form a ring-belt-like framing range together, and the marking light bar is completely included in the ring-belt-like framing range; co-plane calibration is uniformly conducted on the graph sensors to acquire the mapping relation between plane two-dimensional coordinates and pixel coordinates; the measuring trolley is driven to axially advance along the detected tunnel and conduct graph collection on the way, two-dimensional coordinates of the marking light bar are conversed through the mapping relation, and full-section outline data of the detected tunnel are formed by combination of the two-dimensional coordinates of the marking light bar and position information of all collected points. The tunnel section outline measuring method and device based on vision measurement achieve mobile-type measurement, and are high in measuring speed and precision.

A method of providing crime risk data in the absence or partial absence of officially reported data uses a scoring system based on images of locations within particular regions where crime data is to be assessed. The collected crime data may be normalized to actual crime data were both exist to calibrate the proxy crime data derived from the images.

The invention relates to a method for the three-dimensional measurement of high sampling density color structured light based on green stripe segmentation. In previous researches, color encoding is mostly used for space encoding and direct encoding, and most of the color encoding can be used for measuring dynamic objects, but because of the influences caused by the color fidelity and the resolution ratio of a CCD camera, the color encoding has low measurement accuracy for three-dimensional objects and is very difficult to be used for accurate measurement of objects. The method comprises the following steps of: 1) continuously projecting red and blue gray code encoded structured light segmented based on green stripes to the three-dimensional objects required to be measured or reconstructed in turn, and shooting each breadth of projection patterns; 2) performing red, green and blue color stripe segmentation on each breadth of the shot projection patterns to acquire the color values of pixels of each breadth of the patterns; 3) extracting centers and left and right boundaries of the green stripes in each breadth of the shot patterns, and acquiring the coding values of the centers and the left and right boundaries of the green stripes according to the corresponding color values of the pixels of the previous breadths of the patterns; and 4) performing sub-pixel positioning on the centers and the left and right boundaries of the green stripes, and realizing the measurement and the reconstruction of the three-dimensional objects according to system calibration parameters. The method is applied to a three-dimensional measuring technique.

The invention relates to a wave-aberration indoor detection method of a large-caliber photoelectric detection system at different elevations. An objective target plate and illumination system, a small-caliber collimating optical system with a variable diaphragm, a first turning beam-splitting prism, a second turning beam-splitting prism, a measuring head third turning beam-splitting prism, a measuring head first beam-splitting prism, a second beam-splitting prism, a first photoelectric auto-collimator, a third beam-splitting prism and a second photoelectric auto-collimator are successively arranged on a detection optical path. According to the technical scheme of the invention, the wave-aberration indoor detection method of the large-caliber photoelectric detection system at different elevations is mainly used for detecting the wave aberration of the large-caliber photoelectric detection system at different elevations. In this way, the imaging quality at different elevations and the stability quantitative assessment thereof are realized.

The invention discloses a tower footing section extracting method based on airborne laser radar data, which comprises the following steps of: determining a pole tower coordinate through line optimization design and tier pole positioning; automatically generating an appointed tower footing range according to design requirements; automatically generating a digital elevation model (DEM); editing the DEM by combining a high resolution orthoimage with point cloud data; determining a tower foot directional line and a tower foot coordinate according to the tower footing range, a tower type, a corner angle and the like; and automatically generating tower footing sections in batches. According to the tower footing section extracting method based on the airborne laser radar data, full-line tower footing section measurement can be completed indoors, and manual out-field work measurement is replaced, thus workload of fields, specially hill and high mountain areas, is greatly lowered, working efficiency is greatly increased, and remarkable economic and social benefits are achieved.

A shared aperture antenna array including an array of antennas is disclosed. Elements of neighboring antennas are shared to create additional antennas. The shared elements include radiating patches and apertures. Each antenna shares an aperture with neighboring antennas. The array of antennas may be linear or two-dimensional. A phase shifting network with single-pole-single-throw reflective switches may be coupled to the antennas.

The invention discloses a suspended swing arm contourgraph for ultra-large diameter surface shape detection, belongs to the technical field of optical detection and aims at solving the problem that when a swing arm contourgraph existing in the prior art is used for measuring a large-diameter optical element surface shape, the arm is too long to cause reduction of detection accuracy. The suspended swing arm contourgraph for ultra-large diameter surface shape detection comprises a suspension device, a connecting piece A, an air-borne turntable, a connecting piece B, a measuring arm, a weight balancing piece, a connecting piece C and a displacement sensor, wherein the air-borne turntable is connected with the suspension device through the connecting piece A in a suspended mode; the measuring arm is fixed to the air-borne turntable through the connecting piece B; a measuring head of the displacement sensor is fixed to one end of the measuring arm through the connecting piece C; the weight balancing piece is arranged at the other end of the measuring arm. By the adoption of the suspended swing arm contourgraph for ultra-large diameter surface shape detection, the accuracy and stability of swing arm contour detection can be improved.

A sample exchange device (1), in particular, for an NMR spectrometer, comprising a circumferential chain (22), sample receptacles (7) which are disposed on the chain (22) at equal distances and are connected to each other via webs (23), and a measuring or transfer position (9), wherein each sample receptacle (7) can be moved to the measuring or transfer position (9) by moving the chain (22), characterized in that a chain guidance is provided which guides the circumferential chain (22) along a meandering path. The inventive sample exchange device is particularly economic and does not impair the analysis of the samples.

The invention relates to the field of small animal imaging, solves the problems that in the prior art, the image resolution is low and the image acquisition time is long, provides a photon counting-type dynamic diffusion fluorescence tomography system which has high sensitivity and image resolution and achieves the purpose of dynamic diffusion fluorescence tomography with short measurement time. In order to achieve the purpose, the invention adopts the technical scheme as follows: the photon counting-type dynamic diffusion fluorescence tomography device comprises a light source system used for fluorescence excitation, an imaging chamber system used for fixing and moving a detected object, a light switch used for switching a detection passage, a light-filtering system used for filtering off excited light signals, a detection system used for detecting light signals, and a computer used for integrated control of an attenuator, the light switch, a motor-driven light filtering wheel, a photomultipler tube and a photon counting module as well as image reconstruction. The invention is mainly applied to small animal imaging.

The invention relates to a method and system for enhancing the layering of a depth map. The method comprises: dividing the depth value range in the depth map into N depth value zones with the same size; generating a first distribution histogram of the depth map in the N depth value zones with the same size; redividing the depth value range into N depth value zones with different size according to the speed at which the depth value distribution changes in the first distribution histogram; generating a second distribution histogram of the depth map in the redivided N depth value zones with the different size; and generating a new depth map according to the second distribution histogram. By adopting the method and system, the new depth map with higher layering effects and higher distinguishing capabilities can be generated according to the distribution characteristics of the original depth map.

The invention relates to a water quality analysis system based on a water-area dynamic sampling analysis method. The water quality analysis system comprises a body, a water quality detection unit, a water sample storage unit, a water sample acquisition unit and a position control unit. The water sample storage unit moves up and down relative to the body, and a water inlet valve and a water outlet valve of the water sample storage unit are respectively installed on a water inlet and a water outlet. A cushion chamber is arranged at the water inlet valve. An impeller unit of the water sample storage unit is arranged in the cushion chamber and comprises a variable-pitch impeller set, a positioning bearing and a rotating shaft, and the blade shape of an n (n is no less than 1 and no more than N) variable-pitch impeller in the variable-pitch impeller set, from one end of the variable-pitch impeller close to the water inlet valve to the other end, satisfies the following locus equations: Xi is equal to r*cos(Thetai+2Pi*n / N), Yi is equal to r*sin(Thetai+2Pi*n / N), and Zi is equal to (n-1)*(L+a) / N+(Thetai / 2Pi)<m>*[L-(N-1)a] / N. The water sample acquisition unit conveys a water sample in the cushion chamber. The position control unit enables the water sample storage unit to move up and down.

A sample exchange device (1), in particular, for an NMR spectrometer, comprising a circumferential chain (22), sample receptacles (7) which are disposed on the chain (22) at equal distances and are connected to each other via webs (23), and a measuring or transfer position (9), wherein each sample receptacle (7) can be moved to the measuring or transfer position (9) by moving the chain (22), characterized in that a chain guidance is provided which guides the circumferential chain (22) along a meandering path. The inventive sample exchange device is particularly economic and does not impair the analysis of the samples.

The invention relates to the field of computational intelligence, and relates to a multi-scale quantum harmonic oscillator concurrent optimization system and method. The method in the invention is composed of three embedded iteration processes: scale iteration, quantum harmonic oscillator iteration and energy level iteration. By adopting the method provided by the invention, sampling points to be compared at each time are fewer and are easier to fully iterate, so the result is accurate. According to the concurrency of the multi-scale quantum harmonic oscillator multimode optimization method, the Multi-scale quantum harmonic oscillator concurrent optimization method is proposed, and the method can be concurrently operated on a cluster. By adopting the concurrent method, the operational speed is effectively accelerated.

The invention discloses a coating uniformity online detection system for paper-making reconstituted tobacco. The detection system comprises a near-infrared spectrum detection device, a mechanical movement scanning device, a reconstituted tobacco transferring device, a coating uniformity intelligent control device and a computer. A detector moves in a staggered mode to acquire spectrum data of different positions of reconstituted tobacco, and online fast detection of coating uniformity is achieved by means of a data processing and analyzing algorithm. The coating uniformity online detection system for the paper-making reconstituted tobacco performs real-time online detection on coating uniformity of the reconstituted tobacco in the production process, detection speed is high, and detection precision is high. When a detection result does not accord with requirements of uniformity production, information is fed back, coating uniformity can be conveniently controlled, production quality of the paper-making reconstituted tobacco is guaranteed, and production efficiency is improved.