783 results about "Three dimensional shape" patented technology

The invention discloses an optical fiber three-dimensional shape sensor based on an optical frequency domain reflection technology and an application method of the optical fiber three-dimensional shape sensor, the optical fiber three-dimensional shape sensor comprises a base material and more than three optical fibers, and all the optical fibers are spirally wound and fixed on the surface of the base material at equal intervals and constant screw pitches to form distributed sensing units; according to the application method, measurement signals of all the optical fibers are obtained, and axial strain and strain are calculated; calculating the total curvature vector of the reconstruction curve of the measured object; calculating a bending direction angle and a curvature of the reconstruction curve of the measured object; performing differential calculation on the bending direction angle to obtain the torsion rate of the reconstructed curve of the measured object; and reconstructing the three-dimensional shape of the measured object according to the curvature and the torsion of the reconstructed curve of the measured object. The invention aims to realize synchronous measurement of bending, torsion and axial strain by using a distributed sensing unit formed by a multi-fiber structure which is spirally wound at the same interval and at a constant screw pitch.

Methods, systems, and apparatus, including medium-encoded computer program products, for computer aided design of physical structures include: obtaining a design space, design criteria, and boundary conditions for numerical simulation; defining an application of the boundary conditions to a voxelized mesh, including specifying a distribution of a load to nodes of voxels in the voxelized mesh that correspond to a surface of preserve geometry; and iteratively modifying a generatively designed three dimensional shape in the design space in accordance with the design criteria and a physical response of the modeled object determined by the numerical simulation performed using the application of the boundary conditions to the voxelized mesh, wherein the distribution of the total loading value during determination of the physical response ensures an equivalence between the total loading value and a sum of loading values distributed to the respective nodes of the voxels that correspond to the surface.

The invention provides a three-dimensional shape generation method, which comprises the following steps of: extracting condition characteristics of a two-dimensional image by using an image encoder; sampling an initial noise vector from the standard normal distribution based on the condition features; under the guidance of the condition features, the trained generative model generates potential representation based on the initial noise vector; a decoder of the trained 3D VAE model reconstructs a continuous field function according to the potential representation; and extracting a three-dimensional triangular mesh model from the continuous field function. The smoothness of the generated surface and the integrity of the three-dimensional structure can be realized by the 3D VAE model, so that the aims of eliminating stepped artifacts and broken thin shells are fulfilled.

The invention relates to a three-dimensional continuous shape estimation method and system for a flexible robot, and the method comprises the steps: combining the arc length of the flexible robot and an unknown external load from the environment with a Cosserat elastic rod model and a Cosserat elastic string model, so as to generate a Lie algebraic coupling statics model representing tendon driving; the method comprises the following steps of: acquiring an external load, modeling the external load into Gaussian process noise to construct a prior probability model so as to obtain prior probability distribution of the flexible robot in the Lie algebraic space, and constructing a measurement noise model in the Lie algebraic space according to discrete measurement poses and measurement noise captured by a sensor so as to obtain a predicted measurement value. And fusing the prior probability distribution and the predicted measurement value to obtain posterior shape estimation of the flexible robot and the robot, and calculating continuous three-dimensional shape estimation of the flexible robot and first credibility of the continuous three-dimensional shape estimation according to the posterior shape estimation and a Gaussian process interpolation method. Therefore, accurate sensing of the continuous three-dimensional shape of the flexible robot is realized.

A system and method directed to detecting placement of a medical device within a patient body, the system including a medical device including a multi-core optical fiber having a plurality of core fibers. Each of the plurality of core fibers can include a plurality of sensors each configured to reflect a light signal having an altered characteristic due to strain experienced by the multi-core optical fiber. The system can further include logic configured to determine a 3D shape of the medical device in accordance with the strain of the optical fiber. The logic can be configured to define a reference plane for the 3D shape and render an image of the 3D shape on a display of the system in accordance with the reference plane.

Manufacturing a pre-molded stack of one or more lenses to be installable on a curved substrate such as a vehicle windshield includes placing a moldable stack of one or more lenses and adhesive layer(s) on a mold, applying heat and pressure to the moldable stack to produce a pre-molded stack of one or more lenses from the moldable stack, and removing the pre-molded stack from the mold. The pre-molded stack may have a compound curvature, which may match a curvature of the curved substrate. The mold may be formed using three-dimensional shape data derived from the curved substrate, such as by optically scanning the curved substrate.

There is provided an information processing apparatus and method that enable to more easily achieve scalable decoding of point cloud data. In encoding of a point cloud representing an object having a three-dimensional shape as a set of points, control is performed so as to prohibit combined use of scalable encoding that is an encoding method for generating scalably decodable coded data and scaling encoding that is an encoding method involving a change in a tree structure of geometry data. The present disclosure can be applied to, for example, an information processing apparatus, an image processing apparatus, an encoding device, a decoding device, an electronic device, an information processing method, a program, or the like.

A shape estimation apparatus estimates, based on captured images obtained by capturing an object from different directions using a plurality of image capturing apparatuses, a first element group representing a three-dimensional shape of the object, determines whether to delete elements from the first element group, and generates a second element group by deleting the elements from the first element group. With respect to a first element among elements forming a surface of the shape represented by the first element group, if a distance between the first element and a second element corresponding to a position at which a straight line connecting the first element and the image capturing apparatus that has captured the first element intersects the surface does not exceed a predetermined threshold, the first element is excluded from a deletion target.

A lyophilization container includes a first section having a first layer, a second layer aligned with the first layer, and a cavity defined by the alignment of the first and second layers, where at least one of the first and second layers is preformed to have a three-dimensional shape. A lyophilization fixture includes a base member and a lid member. The lid member is movable between a first position and a second position relative to the base member. The base member and lid member together define a housing that receives at least a portion of a lyophilization container.

Provided are a method for predicting a product strain and a system thereof. A method for predicting a product strain according to one embodiment of the present disclosure is a method performed by a computing device, the method comprising the steps of: acquiring a three-dimensional shape model of a first product; preprocessing the three-dimensional shape model and generating graph data including nodes and edges; inputting an image dataset to a measurement model for predicting shape characteristics and physical property characteristics of an object, the image dataset being obtained by imaging, from multiple angles, the object manufactured on the basis of the three-dimensional shape model, and generating manufacturing data of the first product; comparing graph data and the manufacturing data for each node unit, and generating label data including strain data for each node unit; and fine-tuning a graph data-based graph node classification model by using a strain data set composed of pairs of the graph data and the label data. The step of generating the graph data may include the steps of: generating predictive precision reference information for each unit mesh included in the three-dimensional shape model by using the three-dimensional shape model of the first product and the manufacturing data of the first product; and according to the predictive precision reference information for each unit mesh, applying a first resolution to a first unit mesh that requires first predictive precision, and a second resolution to a second unit mesh that requires second predictive precision.

A plurality of images obtained by image capturing by a plurality of cameras and camera parameters are obtained, whether or not an object of interest exists within a depth of field of each camera is determined based on the camera parameters, and processing relating to shape data representing a three-dimensional shape of the object of interest is performed based on an image of the camera for which it has been determined that the object of interest exists within the depth of field.

A lyophilization container includes a first section having a first layer, a second layer aligned with the first layer, and a cavity defined by the alignment of the first and second layers, where at least one of the first and second layers is preformed to have a three-dimensional shape. A lyophilization fixture includes a base member and a lid member. The lid member is movable between a first position and a second position relative to the base member. The base member and lid member together define a housing that receives at least a portion of a lyophilization container.

The invention discloses a rapid three-dimensional shape measurement method for multi-scale frequency shift fringe projection. According to the method, on the basis of the method described in the basic patent CN118936361B, a frequency reuse stripe pattern is constructed through multi-scale region division, and images under different frequencies are obtained by adopting a three-step phase shift strategy. And constructing a complex signal for each sub-block image, performing frequency domain transformation, fusing main frequency amplitude images in two directions, extracting a frequency domain main peak index and an amplitude based on a position invariant theorem, realizing spatial positioning of a direct illumination main component, and further completing homonymy point matching and three-dimensional reconstruction between pixels of a camera and a projector. According to the method, only 15 patterns are needed in each direction, compared with 484 patterns in each direction in a basic scheme, the pattern compression rate reaches 96.9%, and the method is suitable for high-speed three-dimensional reconstruction tasks under complex illumination and dynamic scenes and has the advantages of being small in pattern number, high in response speed and high in positioning robustness.

Provided is an in-vivo indwelling tool having a structure (2) in which a coil (10) with a longitudinal axis direction (x) is curved and a drug (50) is disposed on the surface, wherein the structure (2) has a first part (3) that is formed in a first three-dimensional shape and in which a portion of the coil (10) is curved, and a second part (4) that is formed in a second three-dimensional shape and in which a part of the coil (10) different from the first part (3) is curved in the longitudinal axis direction (x), and either the drug amount per unit length of the coil (10) in the second part (4) is less than the drug amount per unit length of the coil (10) in the first part (3), or the drug (50) is not disposed in the second part (4).

The present invention relates to a glass ceramic having a three-dimensional shape including plural R-shapes including a smallest R-shape whose average radius of curvature is 5.0×102 mm or less and a largest R-shape whose average radius of curvature is 1.0×103 mm or more, having a maximum value of retardations of 20 nm / mm or less, and having a haze value converted into a value corresponding to a thickness of 0.8 mm of 1.0% or less in the largest R-shape.

To provide an evaluation device capable of determining necessity of repair of a ring joint groove according to the state of the ring joint groove formed on a flange surface.SOLUTION: An evaluation device comprises: an acquisition section for acquiring first three-dimensional shape data of a ring joint type flange; and an evaluation section for evaluating a state of a ring joint groove formed on a flange surface of a flange on the basis of the first three-dimensional shape data. The evaluation section includes: a shape measurement section for measuring multiple first shape parameters regarding the shape of the ring joint groove; a detection section for detecting a flaw generated in an object area of the ring joint groove; a strain amount measurement section for measuring a first strain amount of a first contact surface of the ring joint groove on which a ring joint gasket abuts; and a determination section for determining necessity of repair of the ring joint groove on the basis of at least one of the multiple first shape parameters, the flaw, and the first strain amount.SELECTED DRAWING: Figure 19

The present invention relates to the field of automated identification technology, and specifically discloses an adaptive deformation correction and identification system for flexible curved barcodes. By real-time monitoring of the three-dimensional shape changes and strain distribution of the barcode area on the flexible surface, the system can accurately capture complex deformation situations, and utilizes a K-means clustering algorithm to calculate curvature eigenvalues, and Haar wavelet transform to analyze strain data to determine deformation eigenvalues, thereby comprehensively evaluating the degree of deformation of the barcode and its impact on the identification process. Based on these eigenvalues, a random forest model is constructed to predict the degree of deformation and output a deformation score to ensure high-precision identification. When severe, uncorrectable deformation is detected, the system automatically triggers an alarm mechanism, including an audible alarm, a visual signal, and a network notification, to promptly inform management personnel and ensure the stability and long-term reliability of the system.

The invention discloses an anti-fading noise phase type optical frequency domain reflection three-dimensional deformation measurement device and method, and the method comprises the steps: transmitting a detection signal, and dividing the detection signal into a measurement path and a reference path; performing mode multiplexing on the measurement path signal through a photon lantern to generate mode-multiplexed multi-path multi-mode detection light, and enabling the multi-path multi-mode detection light to enter different fiber cores of a few-mode multi-core optical fiber respectively; performing optical domain frequency mixing on the reflected light of the three-dimensional deformation information of different fiber cores of the few-mode multi-core optical fiber and the reference path signal to obtain beat frequency signals of different optical modes of each fiber core; and carrying out phase averaging on the beat frequency signals of different optical modes in each fiber core to obtain strain information of different fiber cores, and reconstructing three-dimensional deformation of the few-mode multi-core fiber by combining a Freen-Serret frame. According to the invention, effective measurement of the spatial three-dimensional shape is realized while the coherent fading noise is compensated, and the method has the characteristics of high sensitivity and high spatial resolution, and is suitable for three-dimensional shape sensing in a complex environment.

High-speed tracking processing on a large number of objects is achieved. Time-series shape data composed of a frame group in which each of frames contains 3D models representing three-dimensional shapes of a plurality of objects, respectively, is obtained. Then, tracking processing is conducted for each object based on correspondence relation information contained in the obtained time-series shape data.

The invention relates to the technical field of defect detection imaging, and discloses a high-precision three-dimensional imaging method and system based on continuous magnetic flux leakage data. Collecting surface magnetic flux leakage signals of a measured target to form an initial signal set, and extracting feature vectors by using a convolutional neural network model; separating three-dimensional space data, and obtaining initial three-dimensional position coordinates of the defect through an iterative mapping algorithm; mining spatial geometric features, determining potential geometric boundaries, and fusing data to construct a refined position model; extracting a detection subset, correcting a shape error, constructing a space reconstruction grid, filling holes, and obtaining a complete three-dimensional shape representation; and through precision calibration and signal matching verification, a high-precision three-dimensional image is output. According to the method, the defect positioning and shape reconstruction precision can be effectively improved, the imaging integrity and accuracy are guaranteed, the problems of fuzzy positioning and shape distortion of traditional magnetic flux leakage imaging are solved, and the defect detection requirements of a complex detected target are met.

An image processing apparatus of the present disclosure is an image processing apparatus for performing remote communication between a first user and a second user present in an environment different from an environment of the first user, including: an obtaining unit configured to obtain first environment information being information for determining three-dimensional shapes of surroundings around the first user, and second environment information being information for determining three-dimensional shapes of surroundings around the second user; and a determination unit configured to determine a play area for at least one of the first user and the second user for the remote communication based on the first environment information and the second environment information obtained by the obtaining unit.

To provide a bag with a stirring function and a stirring device that can reduce transportation costs. [Solution] The stirring bag 1 is characterized by comprising: a strip portion 111 cut from a flexible flat plate; a shape-changing portion 12 that receives a predetermined driving force to raise the strip portion 111 to form a three-dimensional shape and dynamically deforms the three-dimensional shape to make the strip portion 111 function as a blade for stirring the object to be stirred 1a; and a bag 13 that contains the strip portion 111, at least one part of the shape-changing portion 12, and the object to be stirred 1a, and which, when empty and not containing the object to be stirred 1a, can be folded together with the shape-changing portion 12 into a flat, foldable sheet that encloses the flat strip portion 111.

The present disclosure provides: a three-dimensional molecule having a specific three-dimensional shape; and a method for producing the same. In one aspect, the present disclosure provides a three-dimensional molecule having a polyhedral shape. The polyhedron may be a bipartite biregular polyhedron which satisfies (p, q) biregularity, or a vertex-deficient form thereof or a barrel-type vertex-deficient form derivative (where p and q are each independently selected from integers of 2 to 6). A three-dimensional molecule according to the present disclosure can have a closed three-dimensional structure, unlike a metal organic framework (MOF) in which the number of appearances of a repeating structure is not limited.

A capacitance sensor 1A comprises: a decorative layer 21 having a three-dimensional shape; and a wiring assembly 3 joined to the decorative layer 21. The wiring assembly 3 comprises: a molded base member 4 that has a three-dimensional shape and is joined to the decorative layer 21; and a wiring board 5 that has a circuit part 5a in which an electric circuit is formed, and that is stacked onto the molded base member 4 so as to face the inner surface 21b of the decorative layer 21. The circuit part 5a is not joined to the decorative layer 21.

There is provided an information processing apparatus and method to make it possible to reduce a decrease in encoding efficiency. A predictive residual that is a difference between a reflected light intensity that is attribute data of a point cloud representing an object having a three-dimensional shape as a set of points and a predicted value of the reflected light intensity generated by using a reflection model of light on a surface of the object is generated by decoding encoded data of the predictive residual, a coefficient of the reflection model is derived, a predicted value is derived by performing prediction processing by using the reflection model and the coefficient, and the reflected light intensity is generated by adding the predictive residual obtained by decoding the encoded data and the derived predicted value. The present disclosure can be applied to, for example, an information processing apparatus, an electronic device, an image processing method, a program or the like.

To prevent a reduction in measurement accuracy in a three-dimensional scanner.SOLUTION: An optical module is used for a three-dimensional scanner that acquires three-dimensional shape information of an object with light from a light source by using a focusing method, and comprises a sensor, a beam splitter, a pattern plate, a housing, and a shim. The sensor detects the light from the light source reflected on the object, and the beam splitter splits the light into an optical path reaching the object from the light source and an optical path reaching the sensor from the object. The pattern plate is arranged between the light source and the beam splitter and configured to project a reference pattern on the sensor with the light from the light source. The sensor, the beam splitter, and the pattern plate are arranged in the housing. The shim adjusts the distance between the pattern plate and the beam splitter. The housing has a recess for arranging the pattern plate. The pattern plate is rotatably supported in the recess within a predetermined angle range around an optical axis of the light from the light source.SELECTED DRAWING: Figure 3

The present application relates to a kind of metal sheet space bending method, device, electronic equipment and readable medium, wherein the above-mentioned method includes: obtaining preset face group, spreading preset face group to plane, marking the position of common boundary of adjacent curved surface, the included angle of adjacent curved surface and the edge profile of plane;Construct two-dimensional grid surface;Based on two-dimensional grid surface, construct dynamics simulation, carry out three-dimensional shape prediction, obtain three-dimensional shape prediction result, wherein three-dimensional shape prediction result includes multiple intermediate three-dimensional prediction shape;According to the corresponding relationship of the morphological change of mechanical arm movement path and metal sheet bending process, included angle and three-dimensional shape prediction result, obtain the movement path of mechanical arm;Based on movement path, metal sheet is bent in space.This method completely abandons the technical route that metal sheet must rely on die to be bent at present, can quickly test whether its bending form meets the requirements in design stage.

A housing 1 for a centrifugal compressor 40 with a centrifugal impeller 42 has a front cover 2. The front cover 2 defines a central axis 6 and has an axially oriented inlet 8, a diffuser 10 in fluid connection with the inlet 8, a collector 12 in fluid connection with the diffuser 10, and a rear cover opening which is opposite of the inlet 8 and designed to sealingly receive a rear cover 4. The diffuser has a first diffuser wall 30 and the collector has a collector wall 15. The front cover 2 is made of a three-dimensionally shaped base 22 and a separate disk-shaped diffuser wall part 24 which is attached to the three-dimensionally shaped base 22 for forming the diffuser 10 and the collector 12.

Method for creating a 3D digital model of at least one aircraft element in order to produce augmented reality image(s), the method including the steps of: a) scanning, at least one element of an aircraft so as to produce a set of digitised points representative of the 3-dimensional shape of the element, then, using a computer and / or at least one computer processing unit; b) forming, from the set of digitised points, at least one 3D mesh representative of the shape of the element; c) modifying a replica of the given mesh so as to add a missing geometric pattern corresponding, in particular, to a pattern of the element located in its inner volume and / or which is located outside the field of view of the scanner during the scanning in step a).