Electronics and Telecommunications Research Institute

Korea Research Institute of Chemical Technology

Changwon National University Industry Academy Cooperation Corps

Young Hee Kim

Bon Ki Koo

Ki Hong Kim

Jin Ho Kim

Kyung Hwan Park

Ji Young Park

Jin Seo Kim

Hyuk Jeong

Yong-Ki Park

Kwang Hyun Shim

Gil Haeng Lee

Seung Hyup Shin

Moon Wook Ryu

Seung Taik Oh

Soon Chan Park

Man Jai Lee

Hong Zhou Jin

Jae Hui Park

Soon Hyoung Pyo

Byung Seok Roh

Jang Hee Kim

Disclosed are a charge sensitive amplifier capable of minimizing a variation in a signal voltage of an output signal by applying a bias direct current to a gate of a feedback transistor, and a radiation sensor including the same. According to the charge sensitive amplifier and the radiation sensor including the same, it is possible to minimize a variation in a signal voltage of a charge sensitive amplifier output signal by applying a current, which is formed by mirroring a current bias circuit designed to be insensitive to PVT variations, to a gate of a feedback transistor. Furthermore, it is possible to reduce a variation in charging time and enable high-speed sensing by charging the signal voltage to the level of a common voltage VCOM by using a constant current supplied through a bandgap reference (BGR) circuit.

Charge sensitive amplifier and radiation sensor including the same

An apparatus and method for generating synthetic training data for motion recognition. The method includes generating a three-dimensional (3D) human body model in real time according to motion of a human body, converting volume data of the 3D human body model into a 3D linear structure and extracting skeletal joint information, generating a data set of a human body image and skeletal joint information by rendering the 3D human body model and the skeletal joint information, and providing the data set of the image and the skeletal joint information as synthetic training data for motion recognition.

Apparatus and method for generating synthetic training data for motion recognition

Provided are an apparatus and method for tracking a camera that reconstructs a real environment in three dimensions by using reconstruction segments and a volumetric surface. The camera tracking apparatus using reconstruction segments and a volumetric surface includes a reconstruction segment division unit configured to divide three-dimensional space reconstruction segments extracted from an image acquired by a camera, a transformation matrix generation unit configured to generate a transformation matrix for at least one reconstruction segment among the reconstruction segments obtained by the reconstruction segment division unit, and a reconstruction segment connection unit configured to rotate or move the at least one reconstruction segment according to the transformation matrix generated by the reconstruction segment division unit and connect the rotated and moved reconstruction segment with another reconstruction segment.

Camera tracking apparatus and method using reconstruction segments and volumetric surface

An apparatus for 3D reconstruction based on multiple GPUs and a method thereof are disclosed. The 3D reconstruction apparatus according to the present invention includes a 3D reconstruction apparatus, comprising: a camera configured to generate depth data for 3D space; a first GPU configured to update first TSDF volume data with first depth data generated for a first area and predict a surface point of an object which is present in the space from the first updated TSDF volume data; a second GPU configured to update second TSDF volume data with second depth data generated for a second area and predict a surface point of an object which is present in the space from the second updated TSDF volume data; and a master GPU configured to combine a surface point predicted from the first TSDF volume data and a surface point estimated from the second TSDF volume data.

Apparatus for 3D reconstruction based on multiple GPUS and method thereof

A method for calculating a force acting on an interface between immiscible fluids in an SPH (Smoothed Particle Hydrodynamics) based fluid simulation includes: calculating a force caused by viscosities of the fluids; calculating a force caused by pressures of the fluids; calculating an external force applied to the fluids from outside; and calculating an interactive force caused by interaction between the fluids. The force acting on the interface between the immiscible fluids are obtained by using sum of the force caused by the viscosities, the force caused by the pressures, the external force and the interactive force. The interactive force is a surface tensional force calculated based on a pressure acting on the interface between the fluids.

Method for calculating force acting on interface between immiscible fluids in fluid simulation

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

The present invention relates to a method and an apparatus for preparing polysilicon, more specifically to a method and an apparatus for preparing polysilicon in granule form by equipping a fluidized bed reactor with a nozzle that provides an etching gas including hydrogen chloride in order to effectively prevent silicon from depositing on the outlet surfaces of the reaction gas supplying means and to be able to operate the reactor continuously in the bulk production of polysilicon granules.

Method and apparatus for preparing polysilicon granules

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Daejeon, South Korea

Young Hee Kim