Abstract: The present invention provides a cylindrical three-dimensional (3D) image display apparatus and method. The cylindrical 3D image display apparatus includes a spiral screen unit configured such that a plurality of individual screens, each being spirally formed, form a shape of a cylinder, and such that the spiral screen unit display an image on the cylinder. A 3D image control unit is configured to display a 3D image by controlling transparency of each of the plurality of individual screens, based on a display sequence of slice images of the 3D image projected from above or below the cylinder.

Abstract: The present invention relates to an apparatus and method for generating a texture of a 3D reconstructed object depending on a resolution level of a 2D image. The apparatus includes a 3D object reconstruction unit for extracting, from images captured from at least two areas located at different distances, information about a 3D object and information about cameras, and then reconstructing the 3D object. A resolution calculation unit measures size of a space area, covered by one pixel of each of the images in a photorealistic image of the 3D object, and then calculates resolutions of the images. A texture generation unit generates textures for respective levels corresponding to classified images by using the images classified according to resolution level. A rendering unit selects a texture for a relevant level depending on a size of the 3D object on a screen, and then renders the selected texture.

Abstract: Disclosed herein is a camera calibration apparatus. The camera calibration apparatus includes an image reception unit and a camera calibration unit. The image reception unit receives images, in which a same background is captured, from respective cameras placed at locations which are different from each other. The camera calibration unit calculates an entire matrix using canonic topographies for all parallelograms located on respective surfaces which are different from each other within each of the images, and calculates infinite hymnographies between the cameras using the entire matrix at the same time.

Abstract: Disclosed herein are an image matting apparatus using multiple cameras and a method of generating alpha maps. The apparatus includes a multi-camera unit, a depth estimation unit, an alpha map estimation unit, and an image matting unit. The multi-camera unit acquires a main image generated when a main camera captures an object at a specific camera angle, and acquires a plurality of sub-images generated when a sub-camera captures the object at different camera angles. The depth estimation unit estimates a depth value, corresponding to a distance between the main camera and the object, for each cluster. The alpha map estimation unit estimates an alpha map of the main image using the depth value estimated by the depth estimation unit. The image matting unit extracts a foreground from the main image using the alpha map, and performs image matting using the extracted foreground.

Abstract: An apparatus for producing digital cartoons includes: an image collection unit for collecting photorealistic image data; and a cartooning processor for performing a rendering process including image abstraction and edge generation on the photorealistic image data collected by the image collection unit to generate cartooned images. The apparatus further includes a stylization unit for producing a cartoon page having various shapes of cartoon frames, resizing the cartooned images to place the resized images into the cartoon frames and adding cartoon elements to the images placed in the cartoon frames.

Abstract: Disclosed herein is an apparatus and method for extracting correspondences between aerial images. The apparatus includes a line extraction unit, a line direction determination unit, a building top area extraction unit, and a correspondence extraction unit. The line extraction unit extracts lines corresponding buildings from aerial images. The line direction determination unit defines the directions of the lines as x, y and z axis directions based on a two-dimensional (2D) coordinate system. The building top area extraction unit rotates lines in the x and y axis directions so that the lines are arranged in parallel with the horizontal and vertical directions of the 2D image, and then extracts building top areas from rectangles. The correspondence extraction unit extracts correspondences between the aerial images by comparing the locations of the building top areas extracted from the aerial images.

Abstract: Disclosed herein are an apparatus and method for creating animation by capturing the motions of a non-rigid object. The apparatus includes a geometry mesh reconstruction unit, a motion capture unit, and a content creation unit. The geometry mesh reconstruction unit receives moving images captured by a plurality of cameras, and generates a reconstruction mesh set for each frame. The motion capture unit generates mesh graph sets for the reconstruction mesh set and generates motion data, including motion information, using the mesh graph sets. The content creation unit creates three-dimensional (3D) content for a non-rigid object by generating a final transformation mesh set, having a topology similar to that of the reconstruction mesh set, using the motion data.

Abstract: Disclosed herein is an apparatus for generating a digital actor based on multiple images. The apparatus includes a reconstruction appearance generation unit, a texture generation unit, and an animation assignment unit. The reconstruction appearance generation unit generates a reconstruction model in which the appearance of a target object is reconstructed in such a way as to extract 3-Dimensional (3D) geometrical information of the target object from images captured using multiple cameras which are provided in directions which are different from each other. The texture generation unit generates a texture image for the reconstruction model based on texture coordinates information calculated based on the reconstruction model. The animation assignment unit allocates an animation to each joint of the reconstruction model, which has been completed by applying the texture image to the reconstruction model, in such a way as to add motion data to the joint.

Abstract: Disclosed are a parallel computing method for particle based simulation that may decrease a calculation delay due to data communication by simultaneously performing the data communication and a simulation calculation and increasing parallelism of a task, and an apparatus thereof. The parallel computing method for particle based simulation according to an exemplary embodiment to the present invention may include decomposing the whole calculation domain of a manager node into a plurality of sub-domains based on a grid macro-cell based orthogonal recursive bisection (ORB) method; allocating the decomposed sub-domains to worker nodes; and performing load balancing with respect to the worker nodes.

Abstract: An apparatus for receiving data in a communication system includes a parser configured to receive multimedia data and analyze the multimedia data into a plurality of tokens; a plurality of decoding units configured to receive input tokens corresponding to them among the plurality of tokens and decode the multimedia data; and a scheduler configured to schedule the plurality of tokens and transmit the respective input tokens to the plurality of decoding units at precise times, wherein the plurality of decoding units decode the multimedia data by the input tokens transmitted from the scheduler and provide a multimedia service.

Abstract: An apparatus for processing an effect using style lines, includes a contour line creation unit for creating contour lines using polygons of a three-dimensional (3D) object and location information of a camera; a style line creation unit for putting edge lists, extracted at the time of creating the contour lines, into groups, and creating one or more style lines for each of the groups; and an effect processing unit for representing a line style by inserting the created style lines inside and outside a contour line corresponding to the group. Therefore, representation to appear to have been drawn by a human hand is enabled by adding style lines to existing contour lines in order to represent a line style that belongs to various styles of non-photo realistic rendering.

Abstract: Provided are a system and method for extracting a curvature adapted mesh from a three dimensional implicit function data. The system includes an initial mesh generation module, a curvature geometry module, a space division module, and a final mesh extraction module. The initial mesh generation module generates an initial mesh by receiving implicit function data. The curvature geometry module receives the initial mesh from the initial mesh generation module, calculates a directional curvature of a curved surface, generates a Delaunay vertex set used for Delaunay triangulation, and recalculates an implicit function.

Abstract: A method for producing cartoon animation using character animation and mesh deformation is provided. The system includes a motion analysis module, a mesh deformation module, a motion deformation module, and a skinning module. The motion analysis module receives existing motion data having information about non-deformed motions of a character, and extracts parameters from the existing motion data by analyzing an animation value that a character's each joint has. The mesh deformation module receives existing mesh data having information about an external appearance of a character and existing skinning data having information for cohering the parameters or bones with mesh, and generates deformed mesh data. The motion deformation module receives the existing motion data and deforms motion using the parameters. The skinning module receives the deformed mesh data, the deformed motion data, and the existing skinning data and generates character animation data having cartoon like motion.

Abstract: Disclosed herein is a method and apparatus for creating a 3D avatar. The method of creating a three dimensional (3D) avatar includes receiving body information of a user and storing the body information in a DataBase (DB), and creating a 3D avatar for the user by modifying standard data, predetermined based on body information about various persons and stored in the DB, based on the body information of the user.

Abstract: Disclosed herein is a 3D urban modeling apparatus and method. The 3D urban modeling apparatus includes a calibration unit for calibrating data about a translation and a rotation of at least one capturing device at a time that input aerial images and terrestrial images were captured. A building model generation unit generates at least one 3D building model based on the aerial images and the terrestrial images to which results of the calibration have been applied. A terrain model generation unit generates a 3D terrain model by converting an input digital elevation model into a 3D mesh. A texture extraction unit extracts textures related to the building model and the terrain model from the aerial images and the terrestrial images. A model matching unit generates a 3D urban model by matching the building model with the terrain model, which are based on the textures, with each other.

Abstract: Disclosed are an apparatus and a method for automatic control of multiple cameras capable of supporting an effective camera view angle in a broadcast, a movie, etc. The automatic control apparatus of multiple cameras includes: a first main camera; a first camera driver controlling an operation of the first main camera; a second main camera; a second camera driver controlling an operation of the second main camera; at least one auxiliary camera; at least one third camera driver controlling an operation of the at least one auxiliary camera; and an interoperation processor changing a view angle of the at least one auxiliary camera by controlling the at least one third camera driver in accordance with a view angle changing reference changed by changing the view angle of the first main camera, the second main camera, or the first and second main cameras.

Abstract: Provided are a portable multi-view image acquisition system and a multi-view image preprocessing method. The portable multi-view image acquisition system may include: a portable studio including a plurality of cameras movable up, down, left and right; and a preprocessor performing a preprocessing including a subject separation from a multi-view image that is photographed by the plurality of cameras.

Abstract: Disclosed herein is a method and system for transforming the muscles of a character model. The muscles of a target model are created using the muscle information of a reference model. The system includes a reference model processor and a target model processor. The reference model processor creates a reference feature volume, that is, a 3D geometric shape, based on the skeleton and appearance information of the reference model, and subordinates the muscle information of the reference model to the feature volume. The target model processor deforms the reference feature volume to be suitable for the target model, and applies the muscle information of the reference model to the target model, thereby creating muscles for the target model based on the extent of the deformation of the reference feature volume.

Abstract: The present invention relates to a method for automatic rigging and shape surface transfer of a 3-D standard mesh model based on muscles and Nurbs by using parametric control. The method for automatic rigging and appearance surface transfer of 3-D standard mesh model based on muscle and Nurbs by using parametric control includes: extracting a joint-skeleton structure from scan data of dynamic objects having a skeleton structure, or input 3-D mesh models, generating a muscle and a appearance surface based on anatomy information, and generating a standard mesh model that approximates the appearance of the models by using the extracted joint-skeleton structure and the generated muscle and appearance surface; and performing the transfer of the standard mesh model by controlling the parameter so that the occupying error between the multi-view image information of the dynamic objects and the projection image information of the approximating standard mesh model is in the predetermined allowable error range.

Abstract: Provided is a method of simulating various viscoelastic fluids having viscosity, elasticity, and plasticity, based on smoothed particle hydrodynamics (SPH), which is widely used in fluid simulation using particles. Artificial forces related with viscosity, elasticity, and plasticity are added to address fundamental numerical limitations of a SPH method due to use of particle approximation and to improve expression of characterized motions of a viscoelastic fluid. Since the artificial forces are added, and parameters are adjusted according to the adding of the artificial forces, a fluid can be realistically expressed, and the control of a fluid motion is facilitated.