70 results about "Displacement mapping" patented technology

A method and system for simulating a character is provided. The method of simulating a character including: optimizing motion data by using a displacement mapping and a Proportional Derivative (PD) control; and performing controller training by using the optimized motion data and controlling a motion of the character. In this instance, the optimizing includes: generating a target motion by using the displacement mapping between an input motion and a displacement parameter; and generating a simulated motion by using the target motion and an objective function.

The invention is a method and an apparatus for generating a displacement map of a first input dataset and a second input dataset of an input dataset pair. The apparatus comprisesa neural network based feature extractor (25) for processing the first input dataset and the second input dataset so as to generate a feature map hierarchy (50) comprising a base pair of feature maps (20e, 30e) and a refinement pair of feature maps (20b, 30b, 20c, 30c, 20d, 30d),a displacement unit comprising a first comparator unit for obtaining an initial displacement map using the base pair of feature maps (20e, 30e); anda displacement refinement unit for obtain an updated displacement map for the refinement pair of feature maps (20d, 30d).

The invention aims to provide a method and a device for generating an inserted frame image of a video. The method comprises steps of respectively obtaining corresponding forward optical flow displacement mapping images and backward optical flow displacement mapping images according to the continuous first frame images and second frame images in the video; Performing feature extraction on the firstframe image and the second frame image respectively to obtain a first feature image and a second feature image; According to the first characteristic image, the second characteristic image, the forward optical flow displacement mapping image and the backward optical flow displacement mapping image, respectively obtaining a first characteristic image after compensation, a first visual image aftercompensation, a second characteristic image after compensation and a second visual image after compensation through motion compensation; And inputting the result into a video frame insertion model toobtain a frame insertion image. Compared with the prior art, the method has the advantages that two continuous frames of images in the video are utilized to directly interpolate one frame of interpolated image, and the method has better robustness for inaccurate motion vectors estimated under the conditions of object shielding and large displacement, so that the interpolated image with higher image quality is obtained.

The invention discloses an input method of a three-dimensional inertia remote control device and the three-dimensional inertia remote control device. The input method includes the steps that the fixed pointing direction of the three-dimensional inertia remote control device is determined, and posture data of the fixed pointing direction are recorded; rotation and displacement changes of the three-dimensional inertia remote control device are sensed, and rotation change data and displacement change data of the rotation and displacement changes are recorded; the posture data of the fixed pointing direction, the rotation change data and the displacement change data are combined into a code, and a control instruction corresponding to the code is searched for through a database; the control instruction of the three-dimensional inertia remote control device (100) is sent. According to the input method, the posture data of the fixed pointing direction, the rotation change data and the displacement change data are used for being processed to be the control instruction so that a mainframe controlled by the device can be controlled. The complexity of using buttons can be effectively reduced, using is easy and convenient, and the application range is wide.

The invention provides a measurement method for acquiring displacement changes of an earthquake simulator. The method comprises steps of building a measurement system, identifying non-coded points and carrying out image acquisition, carrying out spatial coordinate transformation on the non-coded points on the image, carrying out three-dimensional and dynamical matching on the non-coded points on the image, carrying out sequence matching on the non-coded points on the image, tracking the image sequence, carrying out three-dimensional rebuilding, and displaying and outputting data. The invention also provides a measurement system which is used in match with the measurement method. An optical principle is used for acquiring a video image for the non-coded points identified artificially in the structure, the video image is processed based on a digital image processing technology and a related algorithm, automatic recognition and matched tracking on a measurement point position can be realized, three-dimensional rebuilding of the measurement point is thus obtained, the displacement change amount of each measurement point is acquired, and the overall measurement process is contact-free, no damages are caused, the measurement precision is high, the automatic degree is high, the measurement period is short, and the industrial advantages are huge, and the popularization and application prospect is good.

A “mesostructure renderer” uses pre-computed multi-dimensional “generalized displacement maps” (GDM) to provide real-time rendering of general non-height-field mesostructures on both open and closed surfaces of arbitrary geometry. In general, the GDM represents the distance to solid mesostructure along any ray cast from any point within a volumetric sample. Given the pre-computed GDM, the mesostructure renderer then computes mesostructure visibility jointly in object space and texture space, thereby enabling both control of texture distortion and efficient computation of texture coordinates and shadowing. Further, in one embodiment, the mesostructure renderer uses the GDM to render mesostructures with either local or global illumination as a per-pixel process using conventional computer graphics hardware to accelerate the real-time rendering of the mesostructures. Further acceleration of mesostructure rendering is achieved in another embodiment by automatically reducing the number of triangles in the rendering pipeline according to a user-specified threshold for acceptable texture distortion.

The invention discloses a method and a device for simultaneous localization and mapping (SLAM). A method for displacement computing comprises the steps of repeatedly acquiring an acceleration vector alpha and a gesture vector beta of a movable object (such as a robot or a handheld device) based on a fixed time interval delta t, obtaining displacement of the object during the time interval delta t from time of t-delta t to time of t according to measured data and instantaneous speed V' (t-delta t) estimated in advance and obtaining a gesture vector beta (t) of the movable object during the time of t, wherein delta t = n*delta t, n belongs to N, estimating displacement according to data collected by a three-dimensional camera installed on the movable object and the gesture vector beta (t), carrying out filtering on the displacement delta D (t) to obtain delta D' (t), and then achieving construction of a three-dimensional map, updating the instantaneous speed V' (t) according to obtained delta D' (t) obtained through filtering, and using the instantaneous speed V' (t) for next synchronization displacement and mapping computing.

A method for synthesizing three-dimensional images is provided. A displacement map based on distance data, is generated for a two-dimensional image. The distance data represents a distance between an image object and a position. A shifted version of the two-dimensional image is then produced based on the displacement map. The two-dimensional image and the shifted version of the two-dimensional image are then combined to produce a three-dimensional image. A system is also presented.

The invention relates to a large-stroke quick-response X-Y micro-motion workbench with double displacement magnification. The workbench comprises a pedestal, a motion platform, a top cap, leveling screws, piezoelectric ceramics, an object stage, capacitive displacement sensors, and the like, wherein the pedestal, the motion platform, and the top cap are fixed through screws; the piezoelectric ceramics are installed in displacement magnifying mechanisms and are tightly locked by screws; and the capacitive displacement sensors are installed between the object stage and rounding straight-beam flexible hinges. Improved parallelogram displacement magnifying mechanisms applicable to micro-nano structures are adopted in the workbench; joint parts of the mechanisms are connected by round flexible hinges; and the stiffness of the mechanisms determine the loading capability and quick response of the displacement magnifying mechanism. Two displacement magnifying mechanisms are connected in parallel, so that output force and output displacement are doubled, and displacement coupling of the object stage is reduced. A symmetrical structure is adopted in the micro-motion workbench to provide the workbench with relatively high bandwidth and repeated accuracy. A combination structure of rounding straight-beam and parallel-board flexible hinges is adopted, so that the micro-motion workbench is good in unidirectional displacement.

The invention discloses a spatiotemporal chaos secret communication method. The spatiotemporal chaos secret communication method comprises the steps that (1), the states of a space lattice of a one-way coupling image lattice system at a sending end are divided into odd-dimensional states and even-dimensional states, (2) displacement mapping iteration is carried out on a plaintext frame and vectors in the odd-dimensional states N times, (3) a transmission signal is obtained, (4) a driving signal of the one-way coupling image lattice system at the sending end is calculated, (5) a synchronizing signal of the one-way coupling image lattice system at a receiving end is obtained, (6) the displacement mapping iteration is decoded to obtain a decryption frame corresponding to the plaintext frame, and then spatiotemporal chaos secret communication is achieved. According to the spatiotemporal chaos secret communication method, signals are coded and decoded by means of spatiotemporal chaos, the spatial state values of the one-way coupling image lattice system are grouped, iteration and aliasing of a plaintext secret key are carried out, better confidentiality is achieved, the method can be achieved easily by means of a microprocessor, integration can be achieved easily.

An image processing device comprises the components of an image induction array, an image pre-processing unit, a depth generator and a focusing unit. The image induction array is used for acquiring a plurality of images for aiming at two objects (a first object and a second object). The image pre-processing unit is used for processing the plurality of images, thereby generating two displacement images which are related with the two objects. The depth generator is used for generating depth information according to the two displacement images. The depth image comprises distance information which is related with the first image. The focusing unit is used for generating a pair of focused images which are focused with the first object according to the depth information and the two displacement images.

One embodiment of the present invention sets forth a technique for generating a displacement map. The technique involves receiving a normal map which includes one or more normal vectors associated with a texture map, processing the one or more normal vectors to a calculate one or more depth difference vectors associated with the texture map, and generating one or more rays associated with a first texel of the texture map, where each of the one or more rays associated with the first texel traverses one or more other texels of the texture map. The technique further involves calculating, for each of the one or more rays associated with the first texel, relative depths of each of the one or more other texels traversed by the ray based on each of the depth difference vectors that correspond with the one or more other texels traversed by the ray, determining a displacement value associated with the first texel based on the relative depths calculated for the one or more rays, and storing the displacement value in a displacement map.

A computer implemented method for generating a representation of structure for use in rendering a synthesized image is provided. The representation is a view-dependent displacement mapping that represents displacements along a viewing direction. This view dependency allows the representation to be used to determine self shadows as well as shading, occlusion and silhouettes when used during rendering for synthesis.

The present invention relates to a method for generating a 3 Dimensional model of a certain object. This method first includes the step of determining an object depth representation of the object and the step of generating a texture of the object. Subsequently, a 3-Dimensional model is generated by applying displacement mapping on said object depth representation of said object and subsequently applying said texture onto said 3-dimensional model of said object generated using said displacement mapping.

With variable airgap reluctance actuators problems arise due to the relationship between actuator mass and displacement range. By providing opposed surfaces in the actuator stator core and armature which have undulations typically in the form of grooves, slots and projections, a greater displacement range can be achieved whilst maintaining performance above a rated displacement force characteristic. In such circumstances by establishing a necessary rated displacement force characteristic, an actuator can be tailored and designed to meet that characteristic over a desired displacement range which has significantly less mass in comparison with a prior actuator arrangement having flat surfaces.

The invention relates to a sky image cloud cluster movement velocity computing method based on the phase correlation principle. The method comprises the following steps that 1, an initial image and a displacement image of a sky image are acquired; 2, gray matrixes of the initial image and the displacement image are generated respectively; 3, image frequency spectrums of the initial image and the displacement image are acquired through the two-dimensional Fourier transform; 4, cross-power spectrum of the initial image and the displacement image and an inverse Fourier transform response matrix of the cross-power spectrum are computed; 5, spike pulse coordinates of the response matrix are extracted to serve as cloud cluster displacement vectors; 6, the cloud cluster movement velocity is computed according to the cloud cluster displacement and the image time interval. According to the sky image cloud cluster movement velocity computing method based on the phase correlation principle, the operation flow is simple and direct, and the cloud cluster displacement prediction consuming time can be greatly shortened; the overall movement condition of a cloud cluster in the image can be recognized more effectively, and due to normalization processing in cross-power spectrum computing, the higher robustness is achieved for global image noise.

The invention relates to a behavior identification method based on integration depth typical time wrapping and related correction. The behavior identification method solves the technical problems of low identification accuracy degree and long consumed time, and comprises the steps of: expressing a behavior of a human body as rigid body displacement, decomposing the rigid body displacement into rigid body translation and rigid body rotation, and expressing the rigid body displacement by means of a homogeneous matrix Lie group SE (3), wherein Lie Algebra is SO(3); establishing a skeleton model C(t) according to acquired skeleton data, expressing a displacement mapping relation as the homogeneous matrix Lie group SE (3), establishing the skeleton model C (t) based in a Lie algebra relative feature description method, and subjecting the skeleton model C(t) to difference value processing; aligning the skeleton model C(t) by adopting a integration depth typical time wrapping method; and correcting aligned feature samples by utilizing correlation features, and classifying the corrected feature samples by means of a support vector machine. The behavior identification method solves the problems, and is applied to the behavior identification of 3D skeletons.

The present disclosure relates to an image processing method including the following steps: receiving a deformation or displacement image; defining a meshing of the deformation image; assigning a respective pair of unknown variables to each node of the meshing; detecting one (or more) node(s) located at the boundary between two different materials of the body studied; enriching the node(s) detected; calculating a basic matrix for each basic cell of the meshing; assembling the basic matrixes in order to obtain an overall structural matrix; calculating a resilience image of the body based on the overall structural matrix.

A device is described that includes sensors that are sensitive to displacement damage, and can be configured to display a characteristic damage curve. The sensors, or diodes, can be made of one or more semiconductor materials that are sensitive to displacement damage, and can be operated in dark illumination conditions. The sensors can have multiple shields of a specific or varied thickness. The shields can be formed in different configurations, though the shielding thickness can be designed to change the level of displacement damage absorbed by the sensors. The characteristic damage curve can provide a sensor response variable that displays a functional dependence on displacement damage. For example, the characteristic damage curve can provide a sensor response variable that is one or more currents measured at one or more fixed voltages, or one or more voltages measured at one or more fixed currents.

The invention discloses a micro-displacement VR display screen which is composed of a display screen, a micro-displacement display App module, a micro-displacement driving mechanism and a driving circuit. By combining a fixation point rendering technology, existing software and hardware resources can be fully utilized, under the condition that data flow and operation burden are not greatly increased, image definition is greatly improved, VR retina resolution display is achieved, and the screen window effect of the image is eliminated. Compared with an existing VR head-mounted display, the VR head-mounted display has a wider visual field and higher definition, and enables an image to truly show three-dimensional, immersion and tentacle reachable feelings.

The invention relates to a maximum ratio channel equalization method of short wave (SW) multiple carrier-code division multiple access (MC-CDMA), which comprises the following steps: firstly, mapping data frames to be sent in a displacement mapping module into cyclic shift with original direct sequences, and delivering the cyclic shift which is subjected to serial-to-parallel conversion to inverse fast Fourier transform (IFFT) so as to be changed into time domain modulating signals; carrying out serial-to-parallel conversion on modulated parallel time domain signals, inserting pilot frequency symbols into the obtained parallel time domain signals after serial-to-parallel conversion, and sending the obtained parallel time domain signals in which the pilot frequency symbols are inserted to a receiving end by a channel; after the signals which are received by the receiving end and comprise the pilot frequency symbols and the data frames are subjected to the serial-to-parallel conversion, firstly sending to fast Fourier transform (FFT) and then evaluating the transmission functions of the SW channel by the received pilot frequency symbols; obtaining equilibrium factors of maximal ratio combining efficiency (MRCE) through the data frames received by the receiving end in accordance with the evaluated the transmission functions of the channel, and then carrying out the maximum ratio channel equalization; and carrying out correlation on each sub-carrier datum subjected to the maximum ratio equalization and sequences generated by local spreading codes, obtaining dispreading data by judgment, and receiving the next data frame by a receiver continuously. The maximum ratio channel equalization method has a preferable bit error ratio and is used to reach an anti-interference effect.

The invention provides a load detection system for a muck truck, which is used for detecting the load condition of a truck bed of the muck truck. The load detection system for the muck truck comprises a material sensing unit, a displacement sensing unit and a controller; the material sensing unit is arranged on the lateral surface of the truck bed and comprises at least one material sensor; the material sensor is used for sending a cone transmitted signal to detect the height of materials in the truck bed in a wide angle range; the displacement sensing unit is arranged at the lower part of the truck bed and comprises at least one displacement sensor; the displacement sensor is used for sending a cylindrical transmitted signal to detect displacement change of the truck bed; the controller is electrically connected with the material sensing unit and the displacement sensing unit; and the controller is used for receiving the detecting signals sent by the material sensing unit and the displacement sensing unit, comparing intensities of the two detecting signals and carrying out analysis processing to obtain a detection result. The invention adopts the novel non-contact and non-direct-stress load detection system which can detect the load condition in real time and obtain the accurate load detection result.

A computer implemented method for generating a representation of structure for use in rendering a synthesized image is provided. The representation is a view-dependent displacement mapping that represents displacements along a viewing direction. This view dependency allows the representation to be used to determine self shadows as well as shading, occlusion and silhouettes when used during rendering for synthesis.

The invention relates to a device capable of measuring limited filling pressure and displacement change in the translation process of a retaining wall in real time. The device comprises a limited filling model case system, a retaining wall translation system and a particle image velocimetry (PIV) testing system. According to a testing device, the natural stress state of the limited filling retaining wall in the translation process can be simulated really, that is to say, the stress state of the soil body in the test process is the same as that in practical engineering; high-precision soil pressure sensors are arranged on the retaining wall at equal height intervals, so that soil pressure of limited filling can be measured in real time; a high-precision camera is arranged right ahead a model case, and soil body displacement images in the whole translation process of the retaining wall can be measured in real time through the utilization of a PIV technology at the same time. According to the device, the model testing device is convenient to operate, and the related instruments are simple in structure and easy to control.

The invention discloses a human body rotating and displacement mapping method applied to a humanoid robot. The human body rotating and displacement mapping method comprises the following steps that (1) three-dimensional position information of skeletal joints of a human body is obtained through a depth camera; (2) the skeletal vector from a left hip to a right hip is constructed according to the skeletal joints of the human body; (3) the constructed skeletal vector is projected to the horizontal plane; (4) the rotating angle and direction of the human body are calculated according to the skeletal vector projected to the horizontal plane; (5) the displacement in a human body base coordinate system is calculated according to skeletal joints at the bottom of a spine and the skeletal vector projected to the horizontal plane; and (6) the calculated rotating angle and direction and the calculated displacement in the human body base coordinate system are applied to the humanoid robot. According to the human body rotating and displacement mapping method, human body rotating and displacement are mapped to the humanoid robot through the skeletal joints of the human body and the skeletal vector, and the human body rotating and displacement mapping method has the characteristics of easy and convenient operation and high real-time performance.

A methodology for generating a motion profile for an axis of a motor in a mailing apparatus, the linear or angular motion of the motor axis imparting a motion to a sheet or envelope being conveyed by the mailing apparatus. The methodology includes four processes for generating a segment of a motion profile, depending on whether, for the segment, absolute positional synchronism (of the motor axis to be controlled relative to another motor axis) is needed, or whether a so-called quick step is needed, i.e. a change in velocity corresponding to acceleration that varies during the step. The processes include: forward integration, given the jerk (acceleration per unit time) and starting acceleration as well as initial values of position and velocity; non-parabolic displacement mapping (sometimes called electronic gearing) relating the motion of the axis to be controlled to the motion of another axis where the function expressing the mapping is not parabolic in the commanded or actual position of the other axis; integration based on a velocity equation that is parabolic in time; and a parabolic displacement mapping, i.e. a displacement mapping using a function that is parabolic in the actual or commanded position of a reference axis.

The present invention discloses a test device for determination of a free expansion rate of a swelling rock. The device comprises a water adding device, a water level controller, a reaction device, atester and a controller connected in order. The reaction device is a cuboid structure and is internally provided with two permeable separators, a rock sample is arranged between the two permeable separators, and a permeable stone is arranged below the rock sample; and the tester comprises an EC tester and a displacement tester. The test device is simple, can measure displacement changes of the rock sample in up, left, right, front and back directions, can measure an EC value of solution after reaction by employing a conductivity meter, can analyze the displacement change of the rock sample andthe change of the solution EC value to analyze the free expansion rate of the swelling rock and the failure mechanism of the water-swelling swelling rock.