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95 results about "Visual structure" patented technology

Visual Structures is the second course in the foundations sequence and the course that refines the understanding of the visual structures vocabulary. The emphasis of the course is on the understanding and application of visual structures as a foundation for future efforts in art and design.

Stereoscopic visual structure three-dimensional distortion full-field measurement method

The invention relates to a stereoscopic visual structure three-dimensional distortion full-field measurement method, aiming at solving the problems that the existing N-R method is large in calculating amount, more time-consuming, low in accuracy and poor in robustness, a larger error of the result is produced due to the improper selection of initial value calculated by using a least square method. The method comprises the following processes: 1, collecting an image of a civil experiment test piece so as to obtain initial three-dimensional coordinates of all grid nodes; 2, carrying out subdivision matching on all the grid nodes; if mismatching occurs during the subdivision matching, performing the step 3; if the subdivision matching is correct, obtaining coordinates of the matched grid nodes; 3, carrying out image matching on the mismatched nodes under the condition of large deformation so as to obtain coordinates of the matched grid nodes; 4, constructing a shape function so as to obtain a displacement field; 5, calculating the displacement field obtained in the step 4 by using a Green strain tensor so as to obtain a strain field, and outputting the displacement field and the strain field. The stereoscopic visual structure three-dimensional distortion full-field measurement method is used for the field of structure measurement.
Owner:HARBIN INST OF TECH

Visual system and method for gas hydrate cold storage/gas storage

The invention relates to a visual device system of cool storage / gas storage for gas hydrate, which comprises a high pressure reaction kettle, a low temperature and constant temperature bath, a steady pressure and air intake system, a video monitoring system, a liquid inlet, a gas inlet, and an electronic endoscope, wherein, the end cover of the high pressure reaction kettle is provided with a temperature sensor and a pressure sensor, a permanent magnet stirring motor is fixedly arranged on the end cover of the reaction kettle in the middle of the reaction kettle and with the lower end is connected with a mixing blade. The air inlet is externally connected with the steady pressure and air intake system, signal data is input into the video monitoring system and the whole high pressure reaction kettle is positioned into the low temperature and constant temperature bath in order to realize working temperature. The design of the visual structure of the system can observe and collect reaction process images in real time; a magnetic coupling and stirring system is adopted to solve the problem of high pressure rotation sealing, and the operation is reliable without noise; the mode of adding a surfactant combined with mechanical stirring can greatly improve the generation rate of hydrate and cool storage / gas storage density.
Owner:UNIV OF SHANGHAI FOR SCI & TECH

Fault-tolerance rate distortion optimization video coding method and device based on structure similarity (SSIM) evaluation

The invention relates to a fault-tolerance rate distortion optimization video coding method and a fault-tolerance rate distortion optimization video coding device based on subjective visual structure similarity (SSIM) evaluation. The method comprises the following steps that: the SSIM is used as the distortion evaluation standard to be combined with information feedback of signal channels, and the end-to-end distortion estimation based on the SSIM evaluation is carried out at the coding end; the bit number required by the coding node is calculated according to the in-frame or inter-frame coding mode; the video fault-tolerance coding rate distortion optimization is carried out through calculating fault-tolerance Lagrangian factors, and the optimum coding mode is found under the condition of easy-to-fail network transmission. The method and the device provided by the invention solve the problem that the distortion evaluation in the traditional combined signal source signal channel video coding does not perfectly conform to the human visual characteristics. Meanwhile, the objective distortion estimation caused by signal channel transmission is introduced in the signal source code, the objective distortion transmission influence caused by errors can be inhibited, and the video coding technology adapting to the objective visual quality optimization of the fault-tolerance rate distortion optimization of the signal channel transmission is formed.
Owner:INST OF ACOUSTICS CHINESE ACAD OF SCI

Text positioning method and system based on visual structure attribute

The invention belongs to the technical field of image recognition, and particularly relates to a text positioning method and system based on the visual structure attribute. Based on the visual attribute of a text, by means of color polarity difference transformation and edge neighborhood tail end bonding, abundant closed edges are detected so that abundant candidate connection elements can be obtained, then character stroke attributive character and text colony attributive character screening is conducted, the connection elements belonging to characters are extracted from the candidate connection elements, and then the final text is positioned through multi-channel blending and repeated connection element removal. The method is high in robustness and can be adapted to the situation that multiple word language categories are mixed, or various font styles exist, or arrangement directions are random, or background interference exists and other situations, the positioned text can be directly provided for OCR software for recognition, and OCR software recognition rate can be increased. The text positioning method and system based on the visual structure attribute can be applied to image video retrieval, junk information blocking, vision assisted navigation, street view positioning, industrial equipment automation and other fields.
Owner:SHENZHEN UNIV

Visual positioning method based on side-axis visual structural galvanometer puzzle processing

The invention discloses a visual positioning method based on side-axis visual structural galvanometer puzzle processing. Firstly, the precision of a galvanometer is corrected, a galvanometer correction file is generated, and a visual error is corrected through a galvanometer correction file; drawing segmentation is then performed, the path required for each block to be processed after segmentationis calculated before processing, and only direction offset and angle rotating need to be performed in the processing process; visual positioning is then performed, and a reference point coordinate and a corresponding offset rotating amount are found; graphic transformation is conducted based on a reference point and offset rotating amount, points on a motion platform coordinate system are converted into coordinate values under a galvanometer coordinate system, and the coordinate values are directly sent to a galvanometer system for processing during processing; and a motion control platform is moved to the coordinate position of the center point under a platform coordinate system, coordinate values of feature points of processing path line segments to the galvanometer system for processing, and other blocks are sequentially processed after processing of the current block is completed until processing of all the blocks is completed.
Owner:WUHAN HGLASER ENG CO LTD

Visual carrier gas type roller powder feeder and powder feeding system

ActiveCN107399618AWith non-stop feeding functionIncrease the visualization functionWelding/cutting auxillary devicesLarge containersWorking environmentAlloy
The invention provides a visual carrier gas type roller powder feeder and a powder feeding system. The system comprises the powder feeder, a vacuum absorption device and a spray welding gun which are arranged from top to bottom; the powder feeder is provided with a powder storage cylinder, a hopper base and a roller feeding device from top to bottom; through the transparent visual structure of the powder storage cylinder, the powder feeding condition can be intuitively perceived, and the non-stop material adding function is achieved; a glass cylinder is arranged in the hopper base, the visualization function in the powder conveying flowing process can be additionally achieved, during machine debugging, observation and control over adjustment of the powder feeding amount can be facilitated, and stability observation and anti-blockage observation of the powder feeding amount during normal work are achieved; and the vacuum absorption device can effectively avoid alloy powder bonding, conveying pipeline blockage, unsmooth powder feeding and the like, and the continuous, uniform and stable powder feeding needs are achieved. The feeder is particularly suitable for the work environment where a horizontal long arm spray welding gun does work and stretches into a machining workpiece, and consequently observation cannot be conveniently achieved; and the work air pressure ranges from 0.1 Mpa to 0.5 Mpa.
Owner:WUHAN POLYTECHNIC UNIVERSITY

Analysis method for three-dimensional visual structure of asphalt mixture based on 3D printing

PendingCN111175323AMaterializeHigh geometric similarityMaterial analysis using wave/particle radiationComputer printingDigital mockup
The invention provides an analysis method for a three-dimensional visual structure of asphalt mixture based on 3D printing. The analysis method comprises steps of manufacturing an asphalt mixture testpiece; carrying out CT scanning of the asphalt mixture test piece to obtain continuous two-dimensional tomography images; processing and segmenting the images to obtain image distribution characteristics of a coarse aggregate main skeleton, asphalt mortar and gaps; reconstructing a three-dimensional structure model of the asphalt mixture; sending the three-dimensional structure model of the asphalt mixture to a 3D printer, printing a three-dimensional solid structure model, and arranging stress sensors in the printing process; analyzing the microstructure composition characteristics of the asphalt mixture, and carrying out a mechanical test. The method is advantaged in that a three-dimensional digital model of the asphalt mixture is materialized, the microstructure composition characteristics of the asphalt mixture are analyzed and the mechanical property test is realized by utilizing the three-dimensional solid structure model, and the three-dimensional microstructure composition ofeach component material of the asphalt mixture can be accurately analyzed, so the design of the asphalt mixture is digitalized, refined and visualized.
Owner:FOSHAN UNIVERSITY
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