Abstract: A method for decoding an image based on an intra prediction, comprising: obtaining a first prediction pixel of a first region in a current block by using a neighboring pixel adjacent to the current block; obtaining a second prediction pixel of a second region in the current block by using the first prediction pixel of the first region; and decoding the current block based on the first and the second prediction pixels.

Abstract: Disclosed are an apparatus and a method for providing mixed reality for a virtual experience service, and more particularly, an apparatus and a method for providing mixed reality contents for learning a virtual experience based on a story that provides a service in which a user in a real world appears in a virtual world having the story to undergo a virtual experience. The method picks up the user image in the real world and synthesizes the picked-up image with a desired position of a 3D virtual world. According to the present disclosure, a realistic experience based learning can be provided while a spatial limit is overcome.

Abstract: Provided is an on-line broadcasting study system and method that provides e-book content of a mobile terminal and educational broadcasting content of a smart TV in an associated manner. The mobile terminal processes and outputs e-book content including association information indicating association with specific broadcasting content received from an educational content server, and transmits a broadcasting content transmission request selected according to a user input signal for selecting broadcasting content associated with e-book content, to the smart TV. The smart TV transmits the broadcasting content transmission request of the mobile terminal to a broadcasting content server, and receives and outputs broadcasting content searched for and acquired by the broadcasting content server by using the association information according to the broadcasting content transmission request.

Abstract: Disclosed herein is a content playback apparatus and method for providing an interactive augmented space. The content playback apparatus includes an augmented space recognition unit and an interaction processing unit. The augmented space recognition unit reconfigures a real space into a virtual space based on one depth image extracted from the real space, matching one or more primitive objects to the virtual space, and projects one or more virtual 3D objects, mapped to the primitive objects and combined with the reconfigured virtual space, onto the real space. The interaction processing unit recognizes one or more gesture interactions of a user related to the virtual 3D objects projected onto the real space and projects the virtual 3D objects onto the real space by incorporating deformations of the virtual 3D objects resulting from the recognized gesture interactions.

Abstract: An apparatus for recognizing multi-user interactions includes: a pre-processing unit for receiving a single visible light image to perform pre-processing; a motion region detecting unit for detecting a motion region from the image to generate motion blob information; a skin region detecting unit for extracting information on a skin color region from the image to generate a skin blob list; a Haar-like detecting unit for performing Haar-like face and eye detection by using only contrast information from the image; a face tracking unit for recognizing a face of a user from the image by using the skin blob list and results of the Haar-like face and eye detection; and a hand tracking unit for recognizing a hand region of the user from the image.

Abstract: Disclosed herein is a three-dimensional (3D) object recognition system and method. The 3D object recognition system includes a storage unit for storing an extended randomized forest in which a plurality of randomized trees is included and each of the randomized trees includes a plurality of leaf nodes, training means for extracting a plurality of keypoints from a training target object image, and calculating and storing an object recognition posterior probability distribution and training target object-based keypoint matching posterior probability distributions, and matching means for extracting a plurality of keypoints from a matching target object image, matching the extracted keypoints to a plurality of leaf nodes, recognizing an object using the object recognition posterior probability distributions, and matching the keypoints to keypoints of the recognized object using training target object-based keypoint matching posterior probability distributions stored at the matched leaf nodes.