32 results about "UV mapping" patented technology

A method for texturing of 3D model in 2D environment includes (a) generating a texture map set for 3D model data; (b) UV unwrapping the 3D model data on each of projected planes to obtain a UV map set for each projected plane; (c) performing a 2D image authoring on the UV map set for each projected plane to produce an edited image; and (d) mapping the texture map set and the UV map set by reflecting the edited image to the texture map set and the UV map sets that are generated previously until a desired texture map set is completed.

A system, program product, and method including scanning an object or entity with a three-dimensional (3D) scanning module of a computing system; providing at least one of a three-dimensional (3D) image model and a 3D mesh model from the scanned, rendered, created, or uploaded object or entity; retopologizing at least one of the three-dimensional (3D) image model and 3D mesh model; applying a UV mapping process to at least one of the retopologized three-dimensional (3D) image model and 3D mesh model, where the “U” and “V” of the UV are a two-dimensional axes of a UVW coordinate plane; projecting a two-dimensional (2D) image to at least one of the three-dimensional (3D) image model and 3D mesh model to visualize or determine if the two-dimensional (2D) image has the correct size relative to at least one of the three-dimensional (3D) image model and 3D mesh model.

Systems and methods for physical asset inspection are provided. According to one embodiment, a probe is positioned to multiple data capture positions with reference to a physical asset. For each position: odometry data is obtained from an encoder and/or an IMU; a 2D image is captured by a camera; a 3D sensor data frame is captured by a 3D sensor, having a view plane overlapping that of the camera; the odometry data, the 2D image and the 3D sensor data frame are linked and associated with a physical point in real-world space based on the odometry data; and switching between 2D and 3D views within the collected data is facilitated by forming a set of points containing both 2D and 3D data by performing UV mapping based on a known positioning of the camera relative to the 3D sensor.

The invention discloses a digital twinning method and system based on 3D model matching. The method comprises four steps of model and texture training, model matching, texture fusion and scene placement. The model and texture training is an offline preprocessing step, and the model matching, the texture fusion and the scene placement are real-time processing steps. In the model training, a multi-viewpoint silhouette image is used to learn a three-dimensional structure, and polygon mesh three-dimensional reconstruction is realized. In the texture training, a texture flow is obtained through fixed UV mapping, and reasoning from 2D images to 3D textures is achieved. In the model matching, a reconstructed model and a model of a database are used for performing IOU iterative calculation, and the model with an IOU value closest to 1 is obtained as a matched specified model. In the texture fusion, the matched specified model is fused with the 3D texture flow subjected to texture reasoning to form a standard 3D model. In the scene placement, the 3D model is accurately placed in a 3D scene. According to the digital twinning method, the 3D model scene is automatically generated, and the digital twinning efficiency is improved.

In various embodiments, an interactive multi-mesh garment modeling system may allow a user to employ solid modeling techniques to create one or more representations of garment objects whose motions are typically determined by computer simulations. Accordingly, in one aspect, the interactive multi-mesh garment modeling system may automatically generate one or more meshes that satisfy the requirements for computer simulations from a source mesh modeled by a user using solid modeling techniques. For each polygon associated with a UV mapping of one of these meshes, gradients of U and V for the polygon can be determined with respect to a 3D representation of an object that are substantially orthogonal and of uniform magnitude and that approximate the original gradients of U and V for the polygon. In another aspect, each polygon in a plurality of polygons of a 2D parameterization of an object can be reshaped based on individually corresponding polygons in a 3D representation of the object.

The invention provides a making method and apparatus of three-dimensional comics. The method mainly comprises following steps: receiving and storing a comics script and a plan; designing a role draftaccording to the comics script; performing three-dimensional role modeling, UV extension, UV sticker drawing, three-dimensional role model skeleton binding, three-dimensional role model skinning, three-dimensional scene modeling and three-dimensional prop modeling according to the role design draft, and obtaining three-dimensional role, scene, and prop models through sticker, binding and skinning;performing comics storyboard designing and drawing on the comics script, the plan, and the three-dimensional role, scene and prop models to obtain a comics storyboard draft; performing movement modeling matching according to the storyboard by employing the three-dimensional role model, and producing a three-dimensional comics manuscript through rendering; making a comics sketch according to the three-dimensional comics manuscript; and performing outline drawing and coloring on the three-dimensional comics manuscript, and adding lines, onomatopoetic words and effect lines. According to the method and apparatus, the three-dimensional comics with large amount and excellent quality can be obtained.

The invention discloses a real-time dynamic generating method for features on a bird body model. The method comprises the specific steps that UV mapping is carried out on a polygon model of a bird body, a vertex local coordinate system is set up on each vertex, and direction vectors of feather rods in the features located in the vertex local coordinate systems are set; a particle system is generated, all particles are restrained on the faces of a polygon, repulsive force among the particles serves as the width of the features, after evolution is carried out to the static state, the positions of all the particles are the positions of folliculus pili, and the types of the features are determined randomly; after the bird model is animated and deformed, the vertex local coordinate systems are updated, the direction of the feature rods of the features at the moment of current frames is calculated, the positions of the folliculus pili serve as coordinate origins to set up a feature local coordinate system, feature reference NURBS surface patches are set up according to the set width and the set length, the features are generated on the NUBRS surface patches, and the steps are repeated for all the frames in animation. The method can achieve no-penetration covering among the features, and generate the dynamic features in real time.

The invention provides a method and a device for efficiently previewing CG assets. The method comprises the steps of: mapping UDIM space multi-quadrant UV into an initial UV quadrant through adoptingan arrangement algorithm by means of UV editing software; acquiring any point coordinates in the initial UV quadrant in the UV mapping relation; according to the coordinates corresponding relation ofany point in the initial UV quadrant, acquiring a space point and an edge, corresponding to the point in the initial UV quadrant, in the UDIM space multi-quadrant UV; determining each piece of channelmapping information required by a material to which a plane belongs according to space points and edges of the UDIM space multi-quadrant UV, sampling according to resolution to obtain mapping information of a corresponding map in the initial space UV quadrant, and determining mapping information in a preview UV space; and acquiring different preview requirements of the user, and displaying the UVcorresponding mapping relationship and the mapping information according to the preview requirements. According to the method and the device, asset output of two downstream links can be provided without additionally increasing the workload, the manual time for UV making and mapping making in two times is saved, and the color preview effect basically consistent with the rendering effect can be obtained.

The invention discloses a coherent roaming implementation method for a virtual tourism three-dimensional simulation scene, and belongs to the computer simulation technology, the method comprises the following steps: recording a panoramic video of a scene to be simulated at a rate of 20-60 frames per second; converting a video frame of the panoramic video into a UV map in a scene in a Unity 3D environment; establishing a 3D scene in the form of UV mapping animation; using a rocker controller configured with software to drag to rotate at all angles and controlling a predefined user to substitutefor a role to advance, retreat, advance left and right and steer; playing a panoramic video in a positive time sequence to be matched with a simulated advancing picture; matching a simulated backwardpicture through reverse playing; stretching the panoramic picture frame in a non-linear mode to achieve left-right advancing and steering in a matched mode; when the rocker is in a relaxed state, enabling the video to pause to the last frame of UV chartlet before the rocker is loosened and keeps still. Free, smooth and coherent roaming of a three-dimensional simulation scene is achieved, and thevisual reality sense and the interesting sense are improved.

The invention discloses an image training data set generation method, device and equipment and a computer readable storage medium. The method comprises the steps: scanning a target scene, so as to obtain the three-dimensional data of the target scene; inputting the three-dimensional data into three-dimensional CG software, and constructing a three-dimensional model corresponding to the target scene by utilizing the three-dimensional CG software; performing UV mapping expansion on the three-dimensional model to obtain a virtual scene corresponding to the target scene; triggering an engine of the three-dimensional CG software, generating a plurality of images by utilizing the engine and the virtual scene, and labeling the images when the images are generated so as to obtain an image trainingdata set. According to the technical scheme, the generation efficiency of the image training data set is improved through automatic generation of the images and automatic labeling of the labels, andthe generation cost of the image training data set is reduced.

The invention relates to a virtual object control method and device, electronic equipment and a storage medium. The method comprises the steps of obtaining a first image containing a first object, obtaining an initial UV map of a three-dimensional model corresponding to the first object, mapping the first image to the initial UV map according to the contour and the size of the first object to obtain a UV map of the first object, displaying the UV map of the first object on the three-dimensional model to obtain a three-dimensional virtual object, obtaining adjusting parameters of the three-dimensional virtual object, the adjusting parameters comprising at least one of deformation parameters, breathing frequency parameters and shaking parameters, and adjusting the three-dimensional virtual object according to the adjusting parameters. According to the method, the reconstruction from the two-dimensional image containing the object to the three-dimensional virtual object is realized in a UV mapping mode, the operation is simple, and the expansion is convenient; and the three-dimensional virtual object can be adjusted according to the obtained adjustment parameters, so that the trueness and the user experience are improved.

The present invention provides a horizontal calibration method and system for a panoramic image or video, and a portable terminal. The method comprises: receiving images or video frames of two circles after being imaged by two cameras having opposite photographing directions; obtaining a horizontal calibration matrix during photographing; and pasting, according to the horizontal calibration matrix, the images or video frames of the two circles to a left hemispherical curved surface and a right hemispherical curved surface of a spherical panoramic mathematical model in a UV mapping manner, respectively so that the panoramic images or video frames pasted in the spherical panoramic mathematical model are horizontal. According to the present invention, when an image or a video frame photographed by a panoramic camera is not horizontal, the panoramic image or the video frame pasted in a spherical panoramic mathematical model is still horizontal.

The invention provides a finger three-dimensional model texture mapping method based on UV mapping, and the method comprises the following steps: obtaining a coordinate set and a triangular patch set of all vertexes forming a finger contour from a finger three-dimensional grid model; selecting original points of coordinate systems of any three cameras to establish a space plane, and solving an equation of the space plane where all the cameras are located; mapping triangular patch textures of the model from three dimensions to two dimensions, and performing interpolation and average gray value processing; and writing the obtained two-dimensional texture information back to the texture-free finger model in a UV mapping manner to obtain a finger three-dimensional grid model with the texture information. The finger three-dimensional mesh model reconstructed by the method basically retains complete finger texture and fits actual human fingers, finger feature information can be less lost, the influence of finger recognition caused by finger postures and positions can be effectively solved, and the finger three-dimensional mesh model has a great effect on improvement of finger recognition precision.