Abstract: A method and apparatus for expressing a rigid area based on expression control points that express a motion change of the rigid area with respect to an input expression. The method and apparatus express the rigid area by interpolating a change of expression of an avatar using a weight applied to an expression vector related to a plurality of expression samples to express the input expression and also using a transformation matrix set corresponding to the rigid area of each of the plurality of expression samples.

Abstract: A method and apparatus for realistically expressing teeth performs rendering on a shape model of the teeth using a hybrid normal map based on materials and characteristics of the teeth in order to more realistically express the teeth.

Abstract: Provided is a camera motion estimation method and apparatus that may estimate a motion of a depth camera in real time. The camera motion estimation apparatus may extract an intersection point from plane information of a depth image, calculate a feature point associated with each of planes included in the plane information using the extracted intersection point, and extract a motion of a depth camera providing the depth image using the feature point. Accordingly, in an environment where an illumination environment dynamically varies, or regardless of a texture state within a space, the camera motion estimation apparatus may estimate a camera motion.

Abstract: Provided is a method and apparatus for realistically reproducing an eyeball that may verify and analyze a material property and a deformation property with respect to each of constituent portions of an eyeball and may render each of the constituent portions based on the analyzed priorities, thereby more realistically reproducing the eyeball.

Abstract: A multi-layered augmented reality system and method may extract a target object and a background from an image frame, may track the target object and the background, may apply different coordinate systems to a first virtual object corresponding to the target object and a second virtual object corresponding to the background, and may independently control the first virtual object and the second virtual object.

Abstract: A method and an apparatus search an image using a feature point. The image search method extracts at least one feature point from an image and describes the extracted at least one feature point in stages, thereby generating a hierarchical feature point descriptor. In addition, the method may search for information matching the feature point descriptor from a local database (DB) included in a terminal or a remote DB included in a server.

Abstract: Provided is an image processing apparatus for extracting a three-dimensional (3D) feature point from a depth image. An input processing unit may receive a depth image and may receive, via a user interface, selection information of at least one region that is selected as a target region in the depth image. A geometry information analyzer of the image processing apparatus may analyze geometry information of the target region within the input depth image, and a feature point extractor may extract at least one feature point from the target region based on the geometry information of the target region.