67 results about "Normal mapping" patented technology

The invention relates to an image rendering method. The image rendering method includes the following steps that a depth map, a normal map and a color map of an image needing to be rendered are obtained; the coordinates and the depth values in the projection space and the coordinates and the normal vectors in the world space of all points in the image needing to be rendered are obtained; according to the color map, color information of all the points in the image needing to be rendered is obtained; illumination calculation is carried out to obtain pixel colors of all the points in the image needing to be rendered; pixels are output to obtain the rendered image. The invention further relates to an image rendering device used for achieving the method. Compared with the prior art, the two-dimensional rendering speed and the three-dimensional rendering effect are combined to achieve the effects that 2D face pictures are adopted for displaying appearances of objects, and 3D shielding and lighting effects are adopted for scenes, and therefore the two-dimensional rendering speed and the three-dimensional rendering effect can be achieved.

An improved and more efficient mapping scheme between a fiber channel (FC) interface and small computer system interface (SCSI) for multiple initiator support. In accordance with the method of the present invention an alternate mapping path is provided for processing commands from a FC host to a SCSI target while a single command is being processed therebetween through the normal mapping path. The alternate mapping path may be provided by designating another command pin(s) on the SCSI chip in the gateway or bridge box as an additional mapping address(es) or may be provided by using and coupling additional port(s) on each of the targets having multiple ports wherein the additional port(s) is/are associated with an additional mapping address(es).

The display method and apparatus for a navigation system interchangeably displays a normal map image and a simplified map image in accordance with a user's preference and complexity of the map image. The method includes the steps of checking whether a simple map mode or a normal map mode is set for displaying a map image on a monitor screen of the navigation system, determining which map elements are selected to be displayed when the simple map mode is set, and displaying the map image with only the selected map elements when the simple map mode is set while displaying the map image with all the map elements when the normal map mode is set. The navigation system is designed to switch between the normal map mode and the simple map mode either manually or automatically.

The invention provides a method for optimizing a three-dimensional model for a mobile augmented reality browser. The method can reduce the waiting time of a user during browsing of a VR scene at a cell phone side and improve the user experience. The method comprises the following steps: Step 1, building a low mould model of an object based on Maya, wherein the low mould model is a model expression form for expressing a basic shape configuration of the object; Step 2, eliminating a hidden surface of the low mould model acquired in the first step, wherein the hidden surface refers to a polygon surface plate in a user invisible area; leading the low mould mode into ZBruh to perform a surface fractionizing operation, and adding model details and generating a high mould mode, wherein the high mould model is a model expression form including rich level details; Step 3, leading the high mould model acquired in the second step and the low mould model acquired in the first step into Maya, and baking a normal map for the low mould model under the reference of a texture coordinate map of the high mould model; Step 4, leading the texture coordinate map of the high mould model and the normal map for the low mould model into Photoshop to generate a color map for the low mould model, and finally, endowing the color map to the low mould model.

The invention discloses an object rendering method and device, a storage medium and an electronic device. The method comprises the steps of obtaining a target pixel point to be processed currently ina diffuse reflection map and a normal map of a to-be-rendered object; according to normal direction parameters corresponding to a pre-integration simulation module and the target pixel point, determining the first rendering color of the target pixel point, the pre-integration simulation module being used for simulating a pre-integration map, the pre-integration map being used for representing a corresponding relationship between curvature and a color band, and the normal direction parameter being used for representing a normal direction of the target pixel point in a world space coordinate system; and rendering the target pixel point by using the target rendering color. By the adoption of the technical scheme, the problem that in the prior art, expenditure is large in the role rendering process is solved.

The invention discloses an image processing method and device. The image processing method comprises steps of obtaining an interaction area where an interaction space of a first object in a current image frame is intersected with a first plane where a second object is positioned, wherein the target object in the second object is positioned in the interaction area, generating a normal map of a wave animation corresponding to the interaction area, wherein the normal map displays multiple ripples, using a first target ripple among multiple ripples to move the target object to the position corresponding to the ripple position of the first target ripple in the normal map in the current image frame. The image processing method and device solves the technical problems that the display effect of the second object is poor when the first object interacts with the second object.

The present invention discloses a GPU-based real time dynamic water surface analogy method. In the method, a FX effect document is compiled firstly; time-based periodic perturbation is added to each summit normal in the FX effect document, refraction and reflection vectors are calculated, and refraction veins and reflection veins are sampled to obtain a refraction color and a reflection color; subsequently, the refraction color and the reflection color are mixed by a simplified Fresnel mixed formulation; then a 3DS Max is used for establishing a pool model, the FX effect document is applied to the model as material, and each summit is endowed with normal by normal mapping. In the procedure, a scene is rendered into a frame cache and is used as refraction veins to be transferred to a GPU Shader; then a camera is changed to the position symmetrical with the waer surface; reflection veins are obtained by rendering again and are transferred to the GPU, thereby forming a dynamic water surface effect. The present invention uses the GPU technology to realize a dynamic water surface analogy arithmetic which can completely meet the real time requirement.

An iterative approach to vector median filtering wherein the resulting median vector need not be a member of the original data set. The iterative vector median filtering allows for fast convergence for complex computations and an output which is approximate to the mean, particularly for small data sets. In addition, a method and system for registering and matching 2.5 normal maps is provided. Registration of two maps is performed by optimally aligning their normals through 2-D warping in the image plane in conjunction with a 3-D rotation of the normals. Once aligned, the average dot-product serves as a matching metric for automatic target recognition (ATR).

The invention discloses a model surface normal calculating method. For a triangular network model spliced by a plurality of triangles and describing the surface structure of an object, through GPU rasterization, interpolation calculation is performed on each vertex and each pixel, calculation results are converted into position and normal information of the pixels, and lighting information of the surface of the model can be obtained by calculating the orientation of the normal of each pixel. The calculation of the orientation of the normal of each pixel includes two conditions: the first one is the calculation of the normal of a model without a normal map, and the second one is the calculation of the normal of a model with a normal map. The purposes of model surface transition unsmoothness elimination and small contrast are achieved.

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.

Provided are an apparatus and method for providing the optimized speed and realistic expressions in real time while rendering wrinkled skin during character animation. The wrinkled skin at each expression is rendered using a normal map and a bump map. Generalized wrinkled skin data and weight data are generated by calculating a difference of the normal and bump maps and other normal and bump maps without expressions. Then, the wrinkled skin data of a desirable character is generated using the generalized wrinkle skin data at each expression, and then the normal and bump maps expressing a final wrinkled skin are calculated using the weight at each expression in a current animation time t. Therefore, the wrinkled skin in animation is displayed.

The invention provides a method for rapidly constructing real three-dimensional character models. The method comprises the following steps of: A, obtaining a frontal character head portrait picture through a mobile phone or other photographing equipment, uploading the frontal character head portrait picture to a server, extracting features of the character head portrait picture in an original picture, and generating a detail-rich normal mao according to extracted character feature information; B, adjusting physical attributes of bones by utilizing a prepared character mode with rich bone information, so as to adjust physical expression state of the character model; and C, carrying out mapping according to facial textures of a general model, so as to generate a vivid limb-controllable three-dimensional character model.

The embodiment of the invention provides a virtual reality model rendering method and a device. The method comprises the following steps of: acquiring an object model to be rendered in a virtual reality scene. A normal map and at least one mask texture map are determined, wherein the normal map is a high-modulus normal map corresponding to the model, and at least one mask texture map is used for realizing at least one rendering effect. At least one mask texture map and a normal texture map are use for rendering that object model to be render to obtain the rendered model. The embodiment of theinvention enables the same model to be applied to different scenes, thereby realizing the resource reuse of the model and saving the production cost of the game.

A surface normal map of an object can be interactively modified to create brushstroke-like textures. In one embodiment, surface normal components along the x, y, and z axes (in object coordinate space) are mapped onto red, green, and blue color components. The object's surface is displayed in an editing interface (e.g., a painting program) with colors indicating the surface normals. The user can then modify the surface normals to achieve a desired look for the object. The modified surface normals are stored with the object-model data and are used in rendering the object, helping to create a painted appearance.

A bump mapping technique for performing graphic processing at high speeds is provided. The initial normal bump map data described by normal vectors is acquired, and then integrated to be temporarily converted into the initial height bump map data that is described in the form of height data. The transformed height data is created which describes the contents of a transformation in the form of height data, and the transformed height data is combined with the initial height bump map data to create the modified height bump map data. The modified height bump map data is partially differentiated to be thereby converted into the modified normal bump map data that is described by normal vectors, and the modified normal bump map data is stored.

The invention discloses an animation generation method. The method comprises the steps of obtaining a target animation model and an animation file; obtaining a coordinate map and a normal map according to the target animation model and the animation file; according to the coordinate map and the normal map, creating an animation material corresponding to the target animation model; when an interface corresponding to the dynamic parameter is called, obtaining a particle parameter set for the target animation model through a particle editor; and generating an animation rendering file set according to the target animation model, the coordinate map, the normal map, the animation material and the particle parameters. The invention also discloses an animation playing method and device, the animation rendering file set can be generated based on the same target animation model, and the animation rendering file set can enable the particle cluster to simulate the motion postures of a plurality ofanimation roles, thereby getting rid of the constraint of a conventional skeletal animation, and improving the animation production efficiency.

The invention discloses a normal map reconstruction processing system for 3D models. The system comprises a model import module, a slice processing module, a slice analysis module, a slice normal calculation and mapping processing module, a model updating module and a model output module, wherein the slicing processing module is connected with the model import module and is used for carrying out slice scanning processing on a to-be-processed model through passing through all the map top points by a scanning line; the slice analysis module is connected with the slice processing module and is used for carrying out analysis processing on the model slices processed by the slice processing module; the slice normal calculation and mapping processing module is connected with the slice analysis module and is used for carrying out point-by-point normal calculation by taking slices as basis so as to write in a normal map and calculating a new map UV coordinate when the top points are scanned; the model updating module is connected with the slice normal calculation and mapping processing module and is used for updating the model according to the processing result of the slice normal calculation and mapping processing module; and the model output model is connected with the model updating module and is used for outputting the updated model. The invention furthermore discloses a normal map reconstruction processing method for 3D models.

The invention provides a texture mapping method and system based on three-dimensional grid model parameter design, and the method comprises the steps of obtaining a segmentation result of a group of CT images, and carrying out the reconstruction of each tissue structural plane model according to the mark of the segmentation result, and obtaining a three-dimensional grid model; according to the mark of the segmentation result, determining the category of each tissue model, and configuring different segmentation schemes for different categories of tissues; parameterizing each segmentation result to obtain a one-to-one mapping relation from the three-dimensional model to the plane, and obtaining a preliminary parameterization result; according to the designed texture image, normalizing the preliminary parameterization result according to the position corresponding to segmentation, and obtaining correspondence between the parameterization surface and the texture image; re-combining corresponding segmentation results or suturing the model added with the segmentation lines to obtain a three-dimensional model of a certain tissue with texture coordinates; and performing normal mapping on the model with the texture coordinates. According to the invention, batch automatic texture mapping and display can be realized.

The invention discloses an animation playing method which comprises the following steps: acquiring animation models derived frame by frame according to animation playing time, acquiring model vertex color data in each animation model, and determining vertex serial numbers of vertexes contained in the animation models according to the model vertex color data; processing the model vertex color dataand the model tangent data of each animation model according to the vertex serial number of each animation model to obtain position change data and normal change data of each vertex in the animation;writing each piece of position change data and each piece of normal change data into the corresponding texture map according to a vertex sequence to obtain a position map and a normal map; and obtaining a map sampling instruction, sampling corresponding positions of the position map and the normal map according to the map sampling instruction, and rendering the position data and the normal data obtained by sampling so as to realize animation playing. The animation playing efficiency can be improved.

The invention provides a graph processing method and device, computer equipment and a storage medium, and the method comprises the steps: obtaining a texture map for rendering a target three-dimensional model; the texture chartlet comprises a color chartlet, a normal chartlet reflecting a normal direction and a brush chartlet reflecting brush drawing characteristics; based on preset illumination direction information, performing illumination processing on the normal map to obtain a normal map after illumination processing; performing first sampling processing on the normal map, the color map and the brush map after illumination processing to obtain a first sampling layer; in response to input contour line information of a target three-dimensional model, performing contour stroking processing on the first sampling layer based on the contour line information to obtain a second sampling layer; and based on the second sampling layer, performing rendering processing on the target three-dimensional model to obtain a rendered target three-dimensional model. The rendered target three-dimensional model is more vivid and closer to the watercolor drawing effect.

The invention discloses a water body interactive mapping method which comprises the following steps: emitting particles through a particle emitter, observing by using an orthogonal camera, and simulating fluctuation diagrams of two colors; converting the fluctuation diagrams of the two colors into a Bump map; calculating to obtain a corresponding normal map according to the Bump map; and realizinga water body interaction effect according to the obtained normal map and illumination calculation. The invention further discloses a water body interaction mapping system, an electronic device and acomputer readable storage medium. Therefore, vertex displacement calculation of traditional water body interaction can be replaced, and the water body interaction effect is achieved mainly through normal mapping calculation without depending on the number of vertexes.

The invention provides a method for realizing light patch dynamic illumination, a storage medium and a computing equipment. The method comprises the following steps that the main light source of the light patch is stripped off, and the illumination result of other light sources is separated out; the ambient diffuse reflection of the light patch is separated; the illumination result of the main light source is calculated again; the illumination result of the main light source is added with the illumination result of other light sources and the ambient diffuse reflection. The method, the storagemedium and the computing device for achieving the dynamic illumination of the light map are provided, so that the three-dimensional scene does not need to be re-baked again, and the original single-tension map can be continuously used. The dynamic change of the main light source and the dynamic high-light reflection and high-precision normal labeling effect can be achieved, and the environment shielding of the original light map is kept.

The invention discloses a three-dimensional geologic body texture mapping method based on machine learning, and the method comprises the following aspects: constructing a basic texture sample library, providing a method for supplementing the texture sample library, improving the precision of a three-dimensional geologic body model through Delaunay triangulation, carrying out texture mapping through tangent and normal mapping, and carrying out boundary image fusion. According to the technical method, the mapping technical problems of insufficient realistic expression, large mapping effect flaws and the like of the texture mapping can be solved, the efficiency can be improved, the error rate is greatly reduced, and a reference theoretical method is provided for research on simulation, authenticity and attractiveness of a three-dimensional geologic body texture mapping expressive force technical method in the future.