Electronics and Telecommunications Research Institute

Seong-Jun Bae

Do-Hyung Kim

Jin-Woo Hong

Gun Bang

Jin-Ho Lee

Jae-Woo Kim

Ha-Hyun Lee

Jeong Ju Yoo

Jung-Won Kang

Seong-Jin Park

Sung Jea Ko

Ho-Wook Jang

Hye Soo Kim

Jin Woo Hong

Sung-Chang Lim

Jae-Gon Kim

Ji-Hoon Do

Yong-Ju Cho

Hyeong Min Nam

Soo-Woong Kim

Hyung Min Nam

Disclosed herein are an image compression apparatus and method. The image conversion method includes generating a multi-plane image reconfigured into layers in a depth direction based on multiple pieces of multi-view image data, generating an aggregated layer by aggregating the layers of the multi-plane image into at least one layer, and converting a multi-plane image including the aggregated layer into a two-dimensional (2D) atlas image.

Image conversion apparatus and method

Disclosed herein is a method for generating a texture map of a 3D mesh includes encoding a texture map of a 3D mesh, quantizing the encoded texture map, decoding the quantized texture map, performing rendering using the decoded texture map, and updating the texture map of the 3D mesh based on the value of a loss function.

Apparatus and method for generating texture map of 3-dimensional mesh

Disclosed herein is a method for operating an apparatus for generating an all-in-focus image. The method may include generating a focus-map-calculating model through deep learning for images having different focuses and a reference all-in-focus image corresponding thereto, calculating a focus map for each of multi-focus images, which are captured by a camera, using the focus-map-calculating model, and generating an all-in-focus image for the multi-focus images using the focus map.

Method and apparatus for generating all-in-focus image using multi-focus image

Disclosed herein is a method of operating a plenoptic data storage system. The method may include obtaining plenoptic image data from a plenoptic camera array, generating additional information pertaining to the plenoptic image data, performing compression-coding on the plenoptic image data, and storing the additional information and the compression-coded plenoptic image data in a storage device in accordance with a storage format.

Plenoptic data storage system and operating method thereof

Disclosed is a technology for providing a content on the basis of DASH adaptive to a variable bandwidth. The present invention may comprise: a bandwidth measurement unit for measuring a bandwidth of a network connected to a terminal at predetermined time intervals; a segment generation unit for generating a plurality of segments, wherein the plurality of segments have a predetermined bitrate difference therebetween; and a media information generation unit for generating a media presentation description which includes information on the representation including the plurality of generated segments, wherein the segment generation unit calculates segment lengths using arithmetic operations on the predetermined time interval and the probability that an ith bandwidth itself among bandwidths of the network measured at the predetermined time intervals is increased or decreased by half of the predetermined bitrate difference, and generates a plurality of segments corresponding to the calculated lengths.

Apparatus and method for providing content on basis of DASH adaptive to bandwidth

A method for transmitting a main packet stream generated by multiplexing a plurality of substreams, using a single transmission channel, includes packeting each of the plurality of substreams and generating substream packets; allocating substream sequence information to the substream packets according to a sequence in which the substream packets are generated; allocating main packet stream sequence information to the substream packets according to a sequence in which the substream packets are inputted; and multiplexing inputted substream packets and generating the main packet stream.

Method and apparatus for transmitting/receiving multiplexed packet stream over single transmission channel

Disclosed is an apparatus and method for estimating a channel capacity of an end-to-end terminal. The channel capacity estimating method of the end-to-end terminal includes calculating an average value of channel capacities for each size of data packets, the data packets varying in size, measuring an actual channel capacity with respect to the data packets, and deriving a linear model of a channel capacity based on the size of the data packets using the average value of the channel capacities and the actual channel capacity.

Apparatus and method for estimating channel capacity of end-to-end terminal

A server and a terminal enabling channel capacity estimation in a High-Speed Downlink Packet Access (HSDPA) network and a method of controlling the server and the terminal are provided. More particularly, when transmitting data between both terminals in an HSDPA network, a server end may transmit a packet pair of the same size and a client end may measure a time difference between the packet pair and thereby proceed filtering. Through this, it is possible to estimate the channel capacity. Therefore, it is possible to prevent data transmission from exceeding the channel capacity in the HSDPA to thereby prevent a packet loss and to effectively use a channel.

Server, terminal and method for end to end channel capacity estimation in high speed downlink packet access network

A method of sharing data of a scalable video coding (SVC) file and the SVC file are provided. The SVC file includes: a scalable base track including at least one scalable layer entry each storing metadata of the at least one scalable layer; and at least one sub track generated based on the scalable base track, which includes identification information of the scalable layer that is a basis of generation of a sub track among the scalable layers and identification information of the scalable base track instead of the scalable layer entry. Accordingly, when an SVC coded content is stored as a file, it is possible to reduce a storage capacity by avoiding duplication of common data and to provide convenience when the stored content is reprocessed by allowing a relation of tracks correlated to one another to be represented.

Growing community of inventors

Daejeon, South Korea

Seong-Jun Bae