Abstract:
PURPOSE: A method of describing a perceptual three-dimensional shape, a method and apparatus for searching a three-dimensional graphic model database using the describing method are provided to efficiently describe a three-dimensional object in order to manage the three-dimensional graphic model database. CONSTITUTION: A method of describing a perceptual three-dimensional shape includes a node generating step(400), an edge generating step(410), and an attributed relational graph generating step(420). The node generating step generates nodes each of which corresponds to part-based representation of the three-dimensional shape model and includes a single attribute representing the attribute of each part. The edge generating step generates edges having correlation attributes representing relationship among the nodes. The attributed relational graph generating step generates an attributed relational graph composed of the nodes and edges.
Abstract:
A three-dimensional nanostructure of phosphate-based hydroxide and a preparing method thereof are provided as a photo-catalyst to decompose environmental pollutants such as volatile organic compounds and waste water. A method for preparing a three-dimensional nanostructure represented by the formula of (A2-xA'x)PO4OH comprises the following steps of: mixing metal compounds and phosphorus compounds; adjusting the pH of the mixed compounds to 3-9; and reacting the pH-controlled compounds. In the formula, A and A' are identical or different transition metals selected from the group consisting of Cu, Ni, Co, Fe, Zn and Mn; and the x satisfies the inequality of 0
Abstract:
본 발명은 광촉매 유기 오염물질 분해 장치와 태양 전지를 결합하여 태양 전지의 기전력을 이용하는 유기 오염물질 분해 방법 및 이를 이용한 시스템에 관한 것이다. 본 발명은, 광촉매반응을 이용하여 유기 오염물질을 분해하는 방법에 있어서, 광에너지를 이용한 광촉매 유기 오염물질 분해 장치와 광에너지에 의하여 전압을 가할 수 있는 태양전지를 결합하여, 광에너지를 이용하여 태양전지에서 생산된 전압을, 광에너지를 이용하여 유기 오염물질을 분해하는 광촉매 유기 오염물질 분해 장치에 제공하여 유기 오염물질의 분해가 수행되는 것을 특징으로 하는 광촉매 유기 오염물질 분해 방법이다. 이와 같은 본 발명에 의하면, 광에너지를 이용한 광촉매 유기 오염물질 분해 장치와 태양 전지를 결합시켜, 광에너지를 활용하는 태양 전지로부터 전압을 받아 보다 저가의 비용으로 오염물질 분해량을 크게 증가시킬 수 있는 유기 오염물질 분해 방법 및 이를 이용한 시스템을 제공한다. 광촉매, 유기물, 오염물질, 분해, 태양 전지, 전압, 친환경.
Abstract:
An apparatus and a method for encoding 3-dimensional sequence data based on principal component analysis algorithm are provided to efficiently compress the 3-dimensional sequence data by differently determining quantization steps according to the singular value of each principle component and defining the number of principal components. 3-dimensional sequence data are inputted to a singular value decomposer(110) and divided into a singular value, a right side principal component and a left side principal component by SVD(Singular Value Decomposition). A quantization step determiner(120) determines the number of quantization steps and principal components by using the decomposed singular value. The information on the number of quantization steps and principal components is transmitted to a quantization unit(130). An arithmetic encoder(140) encodes the quantized data.
Abstract:
본 발명은 그래프 컷을 이용한 3차원 형상 복원방법에 관한 것으로, 2차원 밝기 영상으로부터 밝기 제약 조건과 평탄화 제약 조건으로 구성시킨 전체 에너지 함수를 제공하는 단계와, 전체 에너지 함수를 그래프 컷이라는 조합적 에너지 최소화 기법을 사용하여 국소적 에너지 최소화 값을 찾아내어 물체 표면 법선 벡터를 얻어내어 출력하는 단계와, 출력된 각 픽셀마다 주어진 표면 법선 벡터를 사용해서 물체의 3차원 형상을 복원하는 단계를 포함한다. 따라서, 물체의 자세한 특성들은 복원할 수 있으며, 기존 광역적 방법의 비교적 정확한 결과를 내지만 수행 시간이 길다는 단점과, 국소적 방법의 빠른 결과를 낼 수 있지만 전체적인 오차가 상대적으로 크다는 문제점을 해결할 수 있다는 효과가 있다.
Abstract:
PURPOSE: An apparatus for compressing three-dimensional normal mesh data by using rate-distortion optimization is provided to compress 3D(three-Dimensional) normal mesh data by using partial geometry characteristics of the 3D normal mesh data that has a semi-regular mesh structure. CONSTITUTION: A normal re-meshing part(301) changes irregular mesh to semi-regular mesh. A wavelet disassembly conversion part(302) disassembles the semi-regular mesh into base mesh and wavelet coefficients of a high level. A base mesh encoder(303) compresses the base mesh. A segment division part(304) divides the wavelet coefficients of the high level into several segments independent of each other. An SPIHT(Set Partitioning In Hierarchical Trees) encoder(305) encodes the several segments using an SPIHT algorithm. A rate-distortion optimization part(306) allocates optimal bit quantity to each encoded segment. An entropy encoder(307) compresses each segment using an arithmetic coder.
Abstract:
PURPOSE: An apparatus and method for encoding/decoding three-dimensional mesh data are provided to apply GLA(Generalized Lloyd Algorithm) to segmentation to prevent a specific segment from becoming weak against a transmission error. CONSTITUTION: An apparatus for encoding/decoding three-dimensional mesh data includes a mesh segmentation unit(100), a progressive encoder(102), a progressive decoder(106), a segment zipping unit(108), and an error concealment unit(110). The mesh segmentation unit segments input mesh data into N segments. The progressive encoder encodes the N segments to obtain compressed bit streams to secure flexibility of data structure. The progressive decoder classifies the compressed bit streams by segments and progressively reproduce boundaries of the segments according to a collapse rule of boundary edges of the segments without using additional information. The segment zipping unit combines the reproduced segments into mesh data. The error concealment unit compensates for segments damaged by a transmission error.
Abstract:
PURPOSE: A working electrode for opto-electrochemical cell and apparatus using the same are provided to reduce the number of loss electronics. CONSTITUTION: The electrode for opto-electrochemical cell(200) comprises the transparent conductive substrate(210), and the optical catalyst substance layer(220) and metal oxidation coated layer(230). The optical catalyst substance layer is formed on the substrate. The metal oxide film layer is formed in the optical catalyst substance layer. The metal oxide film layer has the band gap lager than the band gap of the optical catalyst substance layer. The metal oxide film layer improves the optical transmittance of light.
Abstract:
A method for manufacturing a stacked electrode using an electrochemical oxidation method and an application of the same to a dye-sensitized solar cell electrode are provided to enhance largely photoelectric conversion efficiency by recovering the resistance of a transparent electrode at a low level. An oxide semiconductor precursor is coated on a transparent conductive layer. The transparent conductive layer coated with the oxide semiconductor precursor is processed thermally in atmosphere of oxidation. A stacked electrode of an oxide semiconductor layer and the transparent conducting layer is formed by processing thermally the transparent conducting layer. A thermal process for the stacked electrode is performed under the atmosphere of reduction. An electrochemical oxidation is performed after the thermal process is performed under the atmosphere of reduction.
Abstract:
Biomembrane devices by using elastic energy barriers are provided to serve a controllable extracellular membrane system similar to in vivo lipid bilayer, so that the Biomembrane devices are useful for study on membrane proteins under conditions similar to in vivo environment, and for treatment of diseases by using bio-signal transfer control. A method for preparing the biomembrane devices comprises the steps of: (1) forming a geometrical surface micro structure on a base substrate; (2) forming a lipid bilayer having a specific lipid region on the geometrical surface micro structure of base substrate; and (3) optionally treating the lipid bilayer with heat, wherein the specific lipid region is lipid raft; the geometrical surface micro structure of base substrate contains a curved region functioning as an inhibition region of a specific lipid region growth and a flat region functioning as an induction region of a specific lipid region growth, forms difference of elastic energy on the lipid bilayer and is prepared by etching, stamping, light irradiation or deposition. The growth and diffusion of a specific lipid region in the lipid bilayer are controlled by the base substrate with the geometrical surface micro structure.