Abstract: Provided is a method of compressing an occupancy map of a three-dimensional (3D) point cloud, and more specifically, a method of compressing an occupancy map of a point cloud in which an occupancy map image of a point cloud existing in a 3D space is compressed based on a compression quality or a patch-by-patch inspection method of the occupancy map image so that compression distortion is minimized when reconstructing the compressed occupancy map image so as to remarkably improve the quality of a reconstructed occupancy map image.

Abstract: There is provided a method of decoding point cloud data, the method comprising: decoding a bitstream to obtain attribute information of point cloud data, acquiring attributes of the point cloud data using the decoded attribute information and reconstructing the point cloud data using the obtained attributes, wherein the attribute information contains bit depth information of each attribute of the point cloud data.

Abstract: There is provided a scalable point cloud encoding/decoding method and apparatus. The scalable point cloud decoding method comprises: acquiring an encoded texture image, an encoded geometry image, encoded occupancy map information, and encoded auxiliary patch-info information from a bitstream; acquiring a decoded texture image for each partition using the encoded texture image; reconstructing a geometry image of at least one item selected from among the encoded geometry image, the encoded occupancy map information, and the encoded auxiliary catch-info information; and reconstructing a point cloud using the texture images for the respective partitions and the geometry image.

Abstract: The present invention discloses an encoding apparatus using a Discrete Cosine Transform (DCT) scanning, which includes a mode selection means for selecting an optimal mode for intra prediction; an intra prediction means for performing intra prediction onto video inputted based on the mode selected in the mode selection means; a DCT and quantization means for performing DCT and quantization onto residual coefficients of a block outputted from the intra prediction means; and an entropy encoding means for performing entropy encoding onto DCT coefficients acquired from the DCT and quantization by using a scanning mode decided based on pixel similarity of the residual coefficients.

Abstract: The present invention discloses an encoding apparatus using a Discrete Cosine Transform (DCT) scanning, which includes a mode selection means for selecting an optimal mode for intra prediction; an intra prediction means for performing intra prediction onto video inputted based on the mode selected in the mode selection means; a DCT and quantization means for performing DCT and quantization onto residual coefficients of a block outputted from the intra prediction means; and an entropy encoding means for performing entropy encoding onto DCT coefficients acquired from the DCT and quantization by using a scanning mode decided based on pixel similarity of the residual coefficients.

Abstract: An apparatus for constructing a library for deriving a material composition using empirical result, which enables acceleration of research on the material-properties relationship. By applying the empirical results of the material composition, missing data of the material compositions can be statistically calculated by using supervised non-linear imputation techniques. The completed composition information of the materials is passed as an input of machine learning material-properties relationship prediction.

Abstract: Disclosed are an organic light emitting device and a display device using the same in which a light emitting layer includes a host and a plurality of dopants. In the light emitting layer, energy is transferred from a host and other dopants to one dopant by energy transfer system, thus it is possible to increase luminous efficacy of a single color and to increase lifetime of emission.

Abstract: A memory system includes a memory controller including: a memory core configured to store data and an error correction code corresponding to the data; a syndrome generator configured to generate a first syndrome by substituting the data and the error correction code, read from the memory core, into a first check matrix, and generate a second syndrome by substituting the data and the error correction code, read from the memory core, into a second check matrix; and an error correction unit configured to correct an error of the read data and error correction code by using the first syndrome and the second syndrome, wherein constituents having values of ‘1’ in the first check matrix have values of ‘1’ also in the second check matrix.

Abstract: Disclosed is a display panel configured such that, in a structure in which the distance between a display surface and a viewer is short, the structure between a reflective plate and a first electrode (an anode) is changed such that light having three or more color peak properties for all subpixels is transmitted through a second electrode (a cathode), whereby white expression as well as color expression is possible, and a head mounted display device including the same.

Abstract: A method and apparatus for watermarking digital content and a data extraction method are disclosed. The digital content watermarking method includes: generating private and public keys corresponding to the user terminal; generating watermark data containing user identity information corresponding to the user terminal and user details associated with the watermark data; generating encrypted data by encrypting the watermark data and the user details with the private key; transmitting the watermark data, the encrypted data, and the public key to a server; receiving digital content when authorized by the server; and watermarking the digital content with the watermark data.

Abstract: A method of inserting additional data into a moving image stream, according to some embodiments of the present invention, includes receiving a first coded bitstream, electing a first picture PA into which additional data is to be inserted from the first coded bitstream, generating a first picture PA? by inserting the additional data into the selected first picture PA, selecting a second picture PB directly referring to the first picture PA, generating a second picture PB? by transforming and coding the selected second picture PB in a manner that decoding the second picture PB? obtains the second picture PB with reference to the first picture PA? and generating a data sequence based on the first picture PA? and the second picture PB.

Abstract: A method of preparing a vesicle for skin absorption enhancement, a vesicle prepared using the method, and a cosmetic composition including the vesicle are provided. The vesicle preparation method may provide a skin absorption enhancement effect and may be used to prepare vesicles with improved formulation stability. The vesicle prepared using the method may be safe without skin irritation and have an improved skin absorption effect due to the use of a ceramide as a skin absorption enhancer, and may have improved formulation stability due to use of a nonionic surfactant and a phospholipid. Accordingly, the vesicle may be used in cosmetic compositions for enhancing skin absorption of bioactive ingredients such as functional ingredients.

Abstract: There is provided a method of decoding point cloud data, the method comprising: decoding a bitstream to obtain attribute information of point cloud data, acquiring attributes of the point cloud data using the decoded attribute information and reconstructing the point cloud data using the obtained attributes, wherein the attribute information contains bit depth information of each attribute of the point cloud data.

Abstract: The present invention discloses an encoding apparatus using a Discrete Cosine Transform (DCT) scanning, which includes a mode selection means for selecting an optimal mode for intra prediction; an intra prediction means for performing intra prediction onto video inputted based on the mode selected in the mode selection means; a DCT and quantization means for performing DCT and quantization onto residual coefficients of a block outputted from the intra prediction means; and an entropy encoding means for performing entropy encoding onto DCT coefficients acquired from the DCT and quantization by using a scanning mode decided based on pixel similarity of the residual coefficients.

Abstract: A method of preparing a vesicle for skin absorption enhancement, a vesicle prepared using the method, and a cosmetic composition including the vesicle are provided. The vesicle preparation method may provide a skin absorption enhancement effect and may be used to prepare vesicles with improved formulation stability. The vesicle prepared using the method may be safe without skin irritation and have an improved skin absorption effect due to the use of a ceramide as a skin absorption enhancer, and may have improved formulation stability due to use of a nonionic surfactant and a phospholipid. Accordingly, the vesicle may be used in cosmetic compositions for enhancing skin absorption of bioactive ingredients such as functional ingredients.

Abstract: The present invention discloses an encoding apparatus using a Discrete Cosine Transform (DCT) scanning, which includes a mode selection means for selecting an optimal mode for intra prediction; an intra prediction means for performing intra prediction onto video inputted based on the mode selected in the mode selection means; a DCT and quantization means for performing DCT and quantization onto residual coefficients of a block outputted from the intra prediction means; and an entropy encoding means for performing entropy encoding onto DCT coefficients acquired from the DCT and quantization by using a scanning mode decided based on pixel similarity of the residual coefficients.

Abstract: A method and apparatus for watermarking digital content and a data extraction method are disclosed. The digital content watermarking method includes: generating private and public keys corresponding to the user terminal; generating watermark data containing user identity information corresponding to the user terminal and user details associated with the watermark data; generating encrypted data by encrypting the watermark data and the user details with the private key; transmitting the watermark data, the encrypted data, and the public key to a server; receiving digital content when authorized by the server; and watermarking the digital content with the watermark data.

Abstract: One aspect of the present invention discloses a watermark embedding method in a watermark embedding apparatus. The method includes inputting a video frame, generating at least two tiles by spatially dividing the video frame, and embedding watermark information to each of the at least two tiles.

Abstract: A semiconductor device may include a data storage region, a parity storage region and an error correction circuit. The data storage region may be configured to store first data and second data. The parity storage region may be configured to store a parity. The error correction circuit may be configured to correct an error of the first data or an error of the second data and the parity, based on a transmission selection signal.

Abstract: Disclosed is a method and apparatus for training a speech signal. A speech signal training apparatus of the present disclosure may include a target speaker speech database storing a target speaker speech signal; a multi-speaker speech database storing a multi-speaker speech signal; a target speaker acoustic parameter extracting unit extracting an acoustic parameter of a training subject speech signal from the target speaker speech signal; a similar speaker acoustic parameter determining unit extracting at least one similar speaker speech signal from the multi-speaker speech signals, and determining an auxiliary speech feature of the similar speaker speech signal; and an acoustic parameter model training unit determining an acoustic parameter model by performing model training for a relation between the acoustic parameter and text by using the acoustic parameter and the auxiliary speech feature, and setting mapping information of the relation between the acoustic parameter model and the text.