摘要:
Provided is an apparatus for targeted advertising based on images of passersby. A passerby image extraction unit extracts an image of a passerby. A trait information extraction unit extracts trait information regarding the passerby from the extracted image. A targeted advertisement obtainment unit obtains a targeted advertisement to be displayed based on the trait information. A targeted advertisement display unit displays the targeted advertisement.
摘要:
Provided are a camera tracking system and method and a live video compositing system using the same, which track a main camera with a sub-camera attached to the main camera and thus stably calculate the motion of the main camera even in a dynamic case where most of a static background is occluded by a moving foreground object. The camera tracking system and the live video compositing system can connect feature point tracks that are cut by a foreground object which dynamically moves in an image. Accordingly, the camera tracking system and the live video compositing system can perform the more accurate and quick tracking of a camera even in a case where a foreground object occludes background by dynamically moving.
摘要:
A method for restoration of building structure using infinity homographies calculated based on parallelograms includes: calculating, using two or more parallelograms, an infinity homography between those cameras which refer to an arbitrary camera; restoring cameras and the building structure on an affine space using the computed infinity homography and homologous points between images; and transforming the restored result onto the metric space using constraints on orthogonality of vectors joining the restored three-dimensional points, the ratio of lengths of the vectors and intrinsic camera parameters. As a result, intrinsic camera parameters, camera positions on the metric space and the structure of the building are restored. All the restoration is possible even when intrinsic camera parameters corresponding to all the images are not constant.
摘要:
A remote shading-based three-dimensional (3D) streaming apparatus includes a 3D streaming server and a 3D streaming client. The 3D streaming server includes a 3D primitive extraction unit for extracting 3D primitives from 3D scene data provided thereto; a 2D primitive conversion unit for converting the extracted 3D primitives into 2D primitives; a 2D scene and network packet construction unit for constructing 2D scene data and network packets; a network packet transmission unit for transmitting the network packets to a 3D streaming client. The 3D streaming client includes a 2D scene reconstruction unit for reconstructing 2D scene data from the network packets; a 2D primitive extraction unit for extracting 2D primitives from the 2D scene data; a 2D rasterizing unit for determining screen pixel values within a primitive region; and a display unit for providing 3D and/or virtual reality contents using the determined screen pixel value.
摘要:
A camera tracking apparatus for calculating in real time feature information and camera motion information based on an input image includes a global camera tracking unit for computing a global feature map having feature information on entire feature points; a local camera tracking unit for computing in real time a local feature map having feature information on a part of the entire feature points; a global feature map update unit for receiving the computed feature information from the global and local camera tracking units to update the global feature map; and a local feature selection unit for receiving the updated feature information from the global feature map update unit to select in real time the feature points contained in the local feature map. The local camera tracking unit computes the local feature map for each frame, while the global camera tracking unit computes the global feature map over frames.
摘要:
The present invention relates to a device and a method for allowing a user to reproduce new 3-D scene from one or two or more given 2-D video frames that already exist. The present invention provides a device and a method for automating post-image processing requiring a lot of manual work, thereby making it possible to produce and edit new 3-D representation from the existing 2-D video.
摘要:
Disclosed herein is a method and apparatus for generating graphic tentacle motions. In the method, a 3D tentacle is divided into a 1D center line and a 2D surface based on information about an initial mesh of the 3D tentacle. New locations of sample points of the center line in a new frame are determined from initial locations of sample points of the center line, based on a tentacle root motion. New locations of sample points of the surface in the new frame are determined from initial locations of sample points of the surface, based on both the initial locations of the center line sample points and the tentacle root motion. The surface is coupled to the center line using the locations of the sample points of both the center line and the surface in the new frame.
摘要:
An apparatus for detecting a pose in motion capture data includes: a motion data input unit which receives motion data of characters; a virtual marker attaching unit for forming a point cloud by attaching virtual markers to joints of an end-effector of each character; and a scaling unit for, when a frame has different character size from an a character size of an original frame to be compared is detected, scaling the character size. The apparatus further includes an ICP algorithm execution unit for finding a matching transformation matrix between the original frame and each frame of the motion data, of which character size has been scaled, by applying an ICP algorithm, and determining a frame, in which character's pose has the smallest difference from that in the original frame based on a sum of the distances between the virtual markers chosen by sampling the matched two poses.
摘要:
A multi-core multi-thread based Kanade-Lucas-Tomasi (KLT) feature tracking method includes subdividing an input image into regions and allocating a core to each region; extracting KLT features for each region in parallel and in real time; and tracking the extracted features in the input image. Said extracting the features is carried out based on single-region/multi-thread/single-core architecture, while said tracking the features is carried out based on multi-feature/multi-thread/single-core architecture.
摘要:
Disclosed is an animation method of deformable objects using an oriented material point and generalized spring model. The animation method comprises the following steps of: modeling a structure of a deformable object into oriented material points and generalized springs; initializing forces and torques acting on the material points, calculating the forces acting on the material points owing to collision of the material points and gravity, calculating the spring forces and torques acting on the material points, obtaining new positions and postures of the material points; updating positions, velocities, postures and angular velocities of the material points based upon physics, and displaying and storing updated results. The oriented material point and generalized spring model of the invention contains the principle of the conventional mass-spring model, but can animate deformable objects or express their structures in more intuitive manner over the conventional mass-spring model. Also, the material point and generalized spring model of the invention can express elongate deformable objects such as hair and wrinkled cloth, which cannot be expressed in the prior art, so as to animate features of various objects.