135 results about "Character animation" patented technology

A face feature analysis which begins by generating multiple face feature candidates, e.g., eyes and nose positions, using an isolated frame face analysis. Then, a nostril tracking window is defined around a nose candidate and tests are applied to the pixels therein based on percentages of skin color area pixels and nostril area pixels to determine whether the nose candidate represents an actual nose. Once actual nostrils are identified, size, separation and contiguity of the actual nostrils is determined by projecting the nostril pixels within the nostril tracking window. A mouth window is defined around the mouth region and mouth detail analysis is then applied to the pixels within the mouth window to identify inner mouth and teeth pixels and therefrom generate an inner mouth contour. The nostril position and inner mouth contour are used to generate a synthetic model head. A direct comparison is made between the inner mouth contour generated and that of a synthetic model head and the synthetic model head is adjusted accordingly. Vector quantization algorithms may be used to develop a codebook of face model parameters to improve processing efficiency. The face feature analysis is suitable regardless of noise, illumination variations, head tilt, scale variations and nostril shape.

Systems and methods for animating 3D characters using a non-rigged mesh or a group of non-rigged meshes that define the appearance of the character are illustrated. Certain embodiments disclose a process for the automatic rigging or autorigging of a non-rigged mesh or meshes. In one embodiment, a method of automatically rigging at least one mesh defining the external appearance of a 3D character includes creating a 3D representation of the external appearance of the 3D character defined by the at least one mesh, where the 3D representation is a single closed form mesh, identifying salient points of the 3D representation, fitting a reference skeleton to the 3D representation, calculating skinning weights for the 3D representation based upon the fitted skeleton, and automatically rigging the 3D character by transferring the skeleton and skinning weights generated with respect to the 3D representation to the at least one mesh defining the external appearance of the 3D character.

Systems and methods for generating and concatenating 3D character animations are described including systems in which recommendations are made by the animation system concerning motions that smoothly transition when concatenated. One embodiment includes a server system connected to a communication network and configured to communicate with a user device that is also connected to the communication network. In addition, the server system is configured to generate a user interface that is accessible via the communication network, the server system is configured to receive high level descriptions of desired sequences of motion via the user interface, the server system is configured to generate synthetic motion data based on the high level descriptions and to concatenate the synthetic motion data, the server system is configured to stream the concatenated synthetic motion data to a rendering engine on the user device, and the user device is configured to render a 3D character animated using the streamed synthetic motion data.

A method for generating a motion sequence of a character object in a rendering application. The method includes selecting a first motion clip associated with a first motion class and selecting a second motion clip associated with a second motion class, where the first and second motion clips are stored in a memory. The method further includes generating a registration curve that temporally and spatially aligns one or more frames of the first motion clip with one or more frames of the second motion clip, and rendering the motion sequence of the character object by blending the one or more frames of the first motion clip with one or more frames of second motion clip based on the registration curve. One advantage of techniques described herein is that they provide for creating motion sequences having multiple motion types while minimizing or even eliminating motion artifacts at the transition points.

An extensible character animation framework is provided that enables video game design teams to develop reusable animation controllers that are customizable for specific applications. According to embodiments, the animation framework enables animators to construct complex animations by creating hierarchies of animation controllers, and the complex animation is created by blending the animation outputs of each of the animation controllers in the hierarchy. The extensible animation framework also provides animators with the ability to customize various attributes of a character being animated and to view the changes to the animation in real-time in order to provide immediate feedback to the animators without requiring that the animators manually rebuild the animation data each time that the animators make a chance to the animation data.

A method and system for creating an object or character in a drawing window and simultaneously displaying the object or character in animated form wherein the animated form is available for instant playback or feedback to the user is described. A single process is used for creating the object and animating the object. The user is able to draw the object in a drawing window and have the object animated in an animation window as the object is being drawn, thereby allowing the user to immediately see the results of the animation. A single process is used to create the object or character (i.e., the “drawing” stage) and to display the object in animated form. The drawing and animation can be shown side-by-side for the user thereby enabling the user to see the animation of a character that the user had created moments before. The animation can take place in an animation window or be placed in a pre-existing context, such as an ongoing story line or a collaborative community context created by multiple users.

A conversational and embodied Virtual Assistant (VA) with Decision Support (DS) capabilities that can simulate and improve upon information gathering sessions between clinicians, researchers, and patients. The system incorporates a conversational and embodied VA and a DS and deploys natural interaction enabled by natural language processing, automatic speech recognition, and an animation framework capable of rendering character animation performances through generated verbal and nonverbal behaviors, all supplemented by on-screen prompts.

The invention discloses a virtual simulation system and method of an antagonistic event with a net based on three-dimensional multi-image display. The system comprises a network connection module, a game logic module, an interaction control module, a physical engine module, a three-dimensional rendering module and a dual-image projection display module, wherein the network connection module comprises a server sub-module and a client sub-module and is used for network communication and data transmission; the game logic module is used for storing game rules, controlling the play of character animation and performing mapping by position; the interaction control module is used for controlling corresponding game characters in a virtual tennis game scene to move and shooting three-dimensional images of different sight points; the physical engine module is used for efficiently and vividly simulating the physical effects of a tennis ball, such as rebound and collision through a physical engine and enabling the game scene to be relatively real and vivid. According to the system, the three-dimensional multi-image display operation can be performed on a same display screen, and the same game scene can be rendered in real time based on different sight angles.

An animation method, system, and storage device which takes animators submissions of characters and animations and breaks the animations into segments where discontinuities will be minimized; allows users to assemble the segments into new animations; allows users to apply modifiers to the characters; provides a semantic restraint system for virtual objects; and provides automatic character animation retargeting.

A character animation system includes a data generating unit for generating a character skin mesh and an internal reference mesh, a character bone value, and a character solid-body value, a skin distortion representing unit for representing skin distortion using the generated character skin mesh and the internal reference mesh when an external shock is applied to a character, and a solid-body simulation engine for applying the generated character bone value and the character solid-body value to a real-time physical simulation library and representing character solid-body simulation. The system further includes a skin distortion and solid-body simulation processing unit for processing to return to a key frame to be newly applied after the skin distortion and the solid-body simulation are represented.

The present invention discloses a drawing method for a vedio texture-based virtual runner. The method is mainly applied in a game. Firstly, a virtual runner video comprising animation effect and a video background picture are manufactured; then the video is used as texture to be displayed on a billboard in a game scene; the video texture and the background picture are transferred into a pixel tinter, and a video background is eliminated; the switching of a character animation in a normal skinned mesh form and the video texture is realized in terms of the distance from a view point; finally, a series of key points are stored to be used as the moving path of the virtual runner. The present invention uses character modeling based on the video to replace a normally used skinned mesh, thereby greatly reducing game rendering expense; a video animation can draw material from the reality, thereby reducing the workload of 3D character modeling.

Equilibrium forces and momentum are calculated using character skeleton node graphs having variable root nodes determined in real time based on contacts with fixed objects or other constraints that apply external forces to the character. The skeleton node graph can be traveled backwards and in so doing it is possible to determine a physically possible reaction force. The tree can be traveled one way to apply angles and positions and then traveled back the other way ‘to calculate’ forces and moments. Unless the root is correct, however, reaction forces will not be able to be properly determined. The adaptive skeleton framework enables calculations of reactive forces on certain contact nodes to be made. Calculation of reactive forces enables more realistic displayed motion of a simulated character.

There is provided a method of representing and animating a 2D (Two-Dimensional) character in a 3D (Three-Dimensional) space for a character animation. The method includes performing a pre-processing operation in which data of a character that is required to represent and animate the 2D character like a 3D character is prepared and stored and producing the character animation using the stored data.

The invention relates to a voice-based control method and a control system. The voice-based control method comprises the following steps of: collecting a voice command and associatively storing the voice command and a character animation command; predicting a scene by aiming at the voice command according to a historical voice command, and associatively storing a communication theme and a scene animation command; receiving the voice command sent by a user in an interaction process and recognizing, and predicting the communication theme according to the voice command, and finding out the scene animation command associated with the communication theme through the communication theme; and combining the found character animation command and the scene animation command. By using the voice-based control method, a virtual interaction system can be controlled by utilizing voice so that a net citizen user can experience more real life in a virtual environment.

The invention discloses a character animation drawing method and system based on motion tracking in a video, wherein the method comprises the following steps: the video containing character movement is obtained, and 3D scanning character models are obtained via 3D scanning in a standard posture; the 3D scanning character models are matched with preset standard templates, and therefore human body shapes and human body postures are obtained. When each frame is read in, an objective function is optimized according to the human body shapes and human body postures to match the standard templates with characters in the video, human body posture parameters can be obtained, and optimization of shape parameters can be realized; Kalman filtering is added to the character motions between different frames, so that the standard templates are converted back to the 3D scanning character models via corresponding matched points, and human skeletons are obtained to realize character animation drawing. This method can help effectively improve accuracy and reliability of animation production and has broad application prospects; the method is simple and easy to implement.

The invention discloses a method and a device for generating two-dimensional images. The method includes: generating a map according to the geometrical shape of a three-dimensional model and a corresponding texture map, wherein the map stores the corresponding relation between the texture map and the geometrical shape of a two-dimensional image projected by the three-dimensional model; and inputting the texture map to render the map so as to generate the two-dimensional image. When the map is generated, the three-dimensional model is projected by a camera model of pinhole imaging, the coordinate of the texture map is directly obtained during projecting, the intensity of corresponding texture points is processed by the aid of an illumination model, and transparency of the corresponding texture points is processed by designing a learning strategy of two-step projection. The corresponding relation between the geometrical shape of the two-dimensional mapped image and the texture map can be well maintained, different final images can be rendered conveniently by changing different texture maps, flexibility is improved greatly, and the network bandwidth is further saved by only transmitting the texture map as compared with that of the prior art by transmitting the whole character animation sequence.

The invention discloses a method for rendering character animation in an artistic manner with the assistance of a computer. The method is based on an illumination spherical model. The invention is characterized in that the illumination spherical model which extracts and creates an artistic style from a work of art is applied to rendering of a character model, so that coloring of an artistic style is realized conveniently and rapidly, and character animation can be manufactured as if by non-photorealistic rendering. By drawing on a method for rendering information about illumination on a sphere, the invention ensures that when a complex object which is uniform in illumination material is rendered, the illumination is consistent in an all-round manner. Because of extraction and application of the illumination spherical model, character rendering of the artistic style can be realized conveniently and rapidly only through simple interactive operation, so that rendering efficiency is improved. The invention solves the problems that the prior computer assisted animation has low rendering efficiency, and the traditional image technology cannot give expression to works of an artist flexibly.

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.