42 results about "Texture atlas" 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.

Systems and methods are provided for optimizing the geometric stretch of a parametrization scheme. Given an arbitrary mesh, the systems and methods construct a progressive mesh (PM) such that all meshes in the PM sequence share a common texture parametrization. The systems and methods minimize geometric stretch, i.e., small texture distances mapped onto large surface distances, to balance sampling rates over all locations and directions on the surface. The systems and methods also minimize texture deviation, i.e., “slippage” error based on parametric correspondence, to obtain accurate textured mesh approximations. The technique(s) begin by partitioning the mesh into charts using planarity and compactness heuristics. Then, the technique(s) proceed by creating a stretch-minimizing parametrization within each chart, and by resizing the charts based on the resulting stretch. Then, the technique(s) simplify the mesh while respecting the chart boundaries. Next, the parametrization is re-optimized to reduce both stretch and deviation over the whole PM sequence. The charts may then be packed into a texture atlas for improved texture mapping in connection with a parametrization scheme.

Systems and methods for displaying volume data on an arbitrary three-dimensional polygonal surface are disclosed. For each polygon in the polygonal surface, a two-dimensional texture tile is created and these texture tiles are combined to form texture atlases. Each texture atlas is allocated a specific amount of memory in a texture cache. Each polygon in the polygonal surface may be scan-converted and the resulting texels may be placed in the texture cache. Voxels that do not intersect any polygon in the polygonal surface may not be scan-converted. This method may result in reduced use of texture cache.

The present invention provides a method and system for compressing data implemented by a computer, and a storage medium. Mesh-based raw video data (or 3D video data) includes a sequence of frames, each of which includes geometry data (e.g., triangle meshes or other meshes) and texture map(s) defining one or more objects. The raw 3D video data is segmented based on consistent mesh topology across frames. For each segment, a consistent mesh sequence (CMS) is defined and a consistent texture atlas (CTA) is generated. The CMS and CTA for each segment are compressed and stored as compressed data files. The compressed data files can be decompressed and used to render displayable images.

A node gathering unit (11) has a polygon group and a texture image group as inputs, and determines nodes corresponding to a texture image group to bind. Said polygon group has a relationship represented by multiple detail levels in a tree structure, and expresses a model by means of the multiple detail levels. Each member of said texture image group is allocated uniquely to the polygon group. A texture atlas generation unit (12): uses node information generated by the node gathering unit (11) to bind the texture image group and generate a texture atlas group; and transforms texture coordinates of the vertices of the polygon group, said texture coordinates being transformed in correspondence to drawing positions.

Position based media pipeline systems and methods for volumetric displays provide content to a volumetric display having at least two pixels arranged in a 3D coordinate space. A three-dimensional (3D) pixel position dataset and a 3D animation are provided and a first volume representation based on the 3D animation is created. A second volume is created based on the first volume and including color data. A texture atlas is assembled based on the second volume and volumetric image data is generated based on the texture atlas. The position based media pipeline outputs the volumetric image data to one or more graphic controllers. The volumetric image data can be output whereby a user can preview the volumetric image data in addition to output to the volumetric display.

An exemplary method for simplifying a texture of a three-dimensional model includes simplifying a first three-dimensional model to determine a second three-dimensional model. The first three-dimensional model has a higher resolution than the second three-dimensional model. The method also includes allocating a texture atlas for the second three-dimensional model. The method further includes filling in the texture atlas for the second three-dimensional model. Filling in the texture atlas may include determining a location on the second three-dimensional model corresponding to a pixel in the texture atlas for the second three-dimensional model, determining a location on the first three-dimensional model corresponding to the determined location on the second three-dimensional model, determining a color value texture mapped to the first three-dimensional model at the determined location on the first three-dimensional model, and setting the determined color value to the pixel in the texture atlas for the second three-dimensional model.

A GPU accelerated volume rendering method from flat textures (also known as texture atlas) is disclosed. The method is not restricted to a specific rendering technique. The method is fast as it requires no reordering or copying passes. An image processing system is also provided. Addressing of two dimensional flat textures is accomplished based on the viewing direction. A first addressing scheme is used for the x direction, a second addressing scheme is used for the y direction and a third addressing scheme is used for the z direction, where x, y, and z refer to the axes of Cartesian coordinate system.

Systems and methods for reducing the amount of texture cache memory needed to store a texture atlas by using uniquely grouped refined triangles to create each texture atlas.

The texture mapping device includes: a texture atlas generating unit (10) that combines a plurality of textures to generate a texture atlas (41), and generates arrangement information (32) of textures for drawing in the texture atlas (41); an information storage unit (330) storing polygon information (33) in which vertex coordinates of polygons in the output image (42) and vertex texture coordinates corresponding to the vertex coordinates in an image drawn on the polygon by the drawing texture are set; a pixel coordinate calculation section (22) that detects the position of a pixel filled with a polygon in the output image (42), and calculates pixel-corresponding texture coordinates corresponding to the position of the pixel in the drawn image; and a coordinate conversion section (23) that The pixel-corresponding texture coordinates are converted into coordinates within the range of the rendering texture on the texture atlas (41).

A texture atlas scheduling method, comprising the following steps: determining basic information and data structures for texture streaming scheduling; creating an actual physical texture and saving the texture loaded into memory; creating an indirect index buffer and saving the Mipmap in the Position information on the physical texture; according to the level of detail information of the texture, the inflow and outflow of the texture are carried out, and according to the rectangular texture packing algorithm, the position information of the currently inflowing texture is found on the physical texture; the texture is rendered and the UV is repositioned Coordinate for sampling calculation. The texture atlas scheduling method of the present invention is based on the rectangular texture packing algorithm, and by merging the textures, the number of DrawCalls is effectively reduced, so that the rendering efficiency is improved; through the texture scheduling, the memory usage can be reduced, and the progressive loading can be performed. The necessary texture resources reduce memory pressure; it can effectively reduce the pressure on the graphics processing unit during the rendering process.