Electronics and Telecommunications Research Institute

Seung Taik Oh

Bon Ki Koo

Wook Ho Son

Il Kwon Jeong

Beom Ryeol Lee

Young Hee Kim

Seung Hyup Shin

Man Jai Lee

Byung Seok Roh

Jang Hee Kim

Manjai Lee

Soon Hyoung Pyo

Ho Yong Seo

Disclosed is a method for processing interaction between a user and hologram using a volumetric data type object wave field. A method for processing interaction between a user and hologram for user's action using a volumetric data type object wave field includes: capturing user action on the holographic image of the object and solving collision between user and object; computing the updated position and rotation of the object by time integration of rigid body equation in collision; calculating the relative position and rotation of the hologram plane with respect to local object coordinates; transforming the hologram in the pre-computed volumetric object wave field grid according to the relative position and rotation of the hologram plane in local object coordinates and reading the object wave fields at all the pixels of the transformed hologram plane in order to generate a new hologram for the transformed object caused by user action.

Method for processing interaction between user and hologram using volumetric data type object wave field

A system and a method perform buoyance of a 3D hologram image on a hologram display screen in a projection mode. A system of displaying a digital hologram includes: a composite hologram unit configured to generate a hologram array by receiving hologram data of a fringe pattern and by compositing background image and a foreground image using the received fringe pattern; a hologram projection unit configured to project a hologram image through a wide-angle lens by applying a light to the hologram array; and a hologram display unit configured to perform space buoyance of the hologram image projected by the hologram projection unit on a 3D hologram display screen. The digital hologram content is managed in real time, and transmission of the digital hologram content to a remote place and site adaptive display of hologram image media may be achieved.

System of displaying digital hologram based on projection and method thereof

A three-dimensional (3D) remeshing apparatus includes a curved surface geometry module for calculating one or more geometric elements, including a normal and a curvature, based on data of an input mesh, a vertex grouping module for grouping vertices of the mesh into a general group, an edge group, and an apex group using information of the curvature calculated by the curved surface geometry module, and a projection module for searching for one or more tangent planes corresponding to one or more of the vertices grouped by the vertex grouping module, projecting one or more corresponding vertices on each of the tangent planes, and restoring one or more edges of the input mesh.

Remeshing method and apparatus for restoring sharp features of mesh made smooth enough

Provided are a system for generating a surface mesh surrounding particles on a 3D space. An implicit function module receives particle data containing three-dimensional location and radius data of the particles, grids the particles into rectangular parallelepiped shape, and generates implicit function data having implicit function value determining the surface at grid points. A mesh module generates a mesh through a pre-process of substituting the implicit function value of the gird point, where the implicit function value is defined, by zero when the a distance between a grid point where the implicit function value of the implicit function data and the vertex of the mesh is within a set distance. Accordingly, the system and method are useful for visualizing the results of particle simulations used in basic science and engineering. In particular, the system and method can generate high-quality mesh in computer graphics of fluid simulation using the particles.

System and method for generating surface mesh surrounding particles

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Daejeon, South Korea

Seung Taik Oh