Electronics and Telecommunications Research Institute

Kwang Ho Yang

Chang Joon Park

Kwang Hyun Shim

Hun Joo Lee

Jin Sung Choi

Dae Hwan Hwang

Ju Young Kim

Jong Sung Kim

Jae Il Cho

Eul Gyoon Lim

Ji Ho Chang

Beom Ryeol Lee

Jae Kwang Lee

Byoung Tae Choi

Hyun Bin Kim

Ki Young Park

Yong Woo Jung

Kang Min Sohn

Jung Youl Lim

Kwang-Hyun Shim

Yun Kwang Hong

Bum Hyun Lim

Byung Eui Min

Kyung Jun Song

Kwang-Man Oh

Jin Ryong Kim

Disclosed are a system and method for performing distortion correction and calibration using a pattern projected by a projector. The system for performing distortion correction and calibration includes a projector that projects a pattern, at least one camera that generates a photographed pattern image by photographing an image onto which the pattern is projected, and an image processing device that calculates a calibration parameter by comparing an original pattern image projected by the projector and the photographed pattern image. Thus, it is possible to obtain an accurate depth image by easily utilizing an image for the pattern projected by the projector. In addition, when obtaining the depth image, the calibration parameter for correcting image distortion according to camera lens and a calibration state of cameras may be efficiently obtained using the pattern projected by the projector.

System for performing distortion correction and calibration using pattern projection, and method using the same

A system for re-generating a packet load for a load test includes a packet collector for collecting a packet transmitted between a game client application and a game server application, a packet data storage for storing the collected packet in a list form, a central manager for editing and re-defining the stored packet as an action and constructing a test scenario by combining the re-defined packet and an agent for generating a load according to the re-defined packet and the test scenario.

System and method for re-generating packet load for load test

A method of extracting line segments from a subject image includes calculating a gradient image and a direction image of respective edge pixels in a canny edge image obtained from the subject image, calculating a primary line passing arbitrary two pixels selected among the edge pixels, selecting candidate line segment pixels through performing an incremental pixel extension from a midpoint of the two pixels forming the primary line, and extracting the line segments by checking whether the candidate line segment pixels are connected to each another.

Method and apparatus for extracting line segments from image using incremental pixel extension

Provided is an apparatus for a parser framework having the characteristics of the application program, using the markup language. But the apparatus for the parser framework, by providing a method of describing data format description and the data format parser framework that can applies the data format description to a development of application programs, has the advantage of reducing the amount of reprogramming involved in a conventional parser development, and maximizing reusability, finally increasing the efficiency of developing the application programs

Parser framework using markup language

A method for controlling a game character is provided. The method includes analyzing a game situation in which a character appears; and controlling a behavior of the character depending on a result of the analyzing. Accordingly, situation recognition and behavior control depending on the recognized situation are simultaneously performed using the same algorithm, so that the calculation amount can be reduced, and thus high artificial intelligence can be implemented with less computer resources. Also, a game developer does not need to implement individual behavior rules of characters depending on game situations since a situation of the game may be recognized through learning of an artificial neural network using a game database of game situations, and thus the behavior of characters can be controlled depending on the recognized situation.

Method for controlling game character

A database query system is provided. The database cache system includes: a network library which processes an access request issued by the online game server by using an input output completion port (IOCP); at least one database connection module which provides a connector for reading data from the database or recording data to the database; a database cache which stores data read from the database by the database connection module; and at least one cache buffer which is allotted to an IOCP worker thread corresponding to a database query request issued by the online game server and stores data read from the database, which is to be transmitted to the online game server.

Database cache system

A method for converting OFF (object file format) from three-dimensional polygon data into a quad edge data structure which includes a step to determine if an input triangle of object file format is a whole new triangle, a step to find two edges and perform splice operation if the input triangle is a whole new triangle in the determination step, a step to find a quad edge from vertex link of quad edge data structure if the input triangle is not a whole new triangle in the determination step, and a step to find a candidate edge for a splice operation by comparing the link generated in the preprocessing stage and the vertex link of quad edge data structure and performing the splice operation on the candidate edge and the new quad edge.

Method for converting three-dimensional polygon data into quad edge data structure

Growing community of inventors

Daejeon, South Korea

Kwang Ho Yang