상․하향통신을 이용한 CATV 자동화 장치구현

곽윤식 忠州大學校 2003 한국교통대학교 논문집 Vol.38 No.3

This study is about the development of a system related to the CATV network. It intends to develop an automatically centralized Headend system and a distributive system to remove the ineffectiveness of the established manual system. To achieve this goal, we took a part of bandwidth, which is not used for the transmission of video signals in the established frequency bandwidth, and used it for the transmission and receiver of controlling signals. By this way we could design a system of transmission and receiver and a automatic distributive system. We developed an information management system for the 9600bps CATV using RS-232 of forward/backward communication and backward communication.

영역기반 영상 검색 시스템에 관한 연구

郭允植 충주대 2000 한국교통대학교 논문집 Vol.35 No.2

In this paper, we discussed the region-based image retrieval using image segmentation.A image segmentation method uses region-merging, and we proposed the segmentation method which can reduce the effect of irregular light sources.A candidate regions which is merged is selected by energy values of high frequency bands in discrete wavelet transform A content-based image retrieval is processed using segmented region information, and the images are retrieved by color, texture, shape feature vector.A similarity measures are processed using Euclidean distance between regions, and we illustrated that the proposed method is reasonable by simulation.

화상·음성 레코더를 위한 메모리 설계

郭允植 충주대 2001 한국교통대학교 논문집 Vol.36 No.2

In this paper, we proposed flash memory design method for image and voice recoder based on the standard imageㆍvoice cosec algorithm.For implementation of this method we designed imageㆍvoice browser which is application system of flash memory and card using GDS30C6001 USB controller.To process image and voice data we designed root directory of image and voice files repectively.To extend application of image and voice data we added various information to the system.

내용기반 이미지 검색시스템을 위한 사용자 인터페이스의 설계

곽윤식,이석희 충주대 산업과학기술연구소 1998 産業科學論文集 Vol.6 No.-

Normally, traditional database system provided text based user interface for query. That is, users just could give keyword or cheese keyword from keyword list. However, content based image retrival system should support more than that. It should support visualized query expression and query refinement. Also, users should be able to browse search results and to select what they want users can make visualized query experssion by sketching or using sample images or features such as color and texture. In this paper, we first analysis user interface of existing image retrival systems, and design user interface and search engine for content base image retrival system.

적응적 영상개선을 위한 지문영상의 방향성 특성과 화질의 관계 분석

곽윤식 한국통신학회 1998 韓國通信學會論文誌 Vol.23 No.4

본 논문은 적응적 영상개선을 위한 전 단계로 자기상관함수를 이용한 지문 영상의 방향성 특성과 화질의 관계 분석에 관한것이다. 이를 위해서 원 영상을 방향 영상으로 변환한 실험영상을 대상으로 부 영역의 크기를 16, 32, 64, 방향성을 1, 2, 3, 4로 설정하고 화질의 척도인 방향성 누적값을 산출하였다. 또한 지문영상에 대한 화질 특성을 추출하고 최적의 부 영역과 방향성 관계를 정량적인 실험 자료로 제시하기위해 군집환 알고리즘을 이용한 분석 과정을 수행하였다. This paper aims to examine the relationship between the directional characteristics and the quality for fingerprint image as preprocessing stage for adative image enchancement. In order to do that, we transformed the original images into directional images and set up the subimage size of 16, 32, 64 and the direction of 1, 2, 3, 4. Then we extracted the accumulated directional value as the measurement of quality for fingerprint images. By using the clustering algirthm, we performed an analytic experiemnt with the result. Finally, we could extract the optimal subimage size and directional characteristics of fingerprint image.

영상이해를 위한 지식유출에 관한 연구

곽윤식,이대영 한국통신학회 1993 韓國通信學會論文誌 Vol.18 No.5

본 논문에서는 영상 이해를 위한 지식 베이스 시스템에 있어서 핵심적 기능을 수행하게 되는 저급 지식원과 중급 지식원의 추출에 관한 것으로 화소 영역에 적용되는 저급 처리 과정으로 영역 분할 처리과정, 방향 영상 변환과정, 형태 정보 추출 과정, 영역 특징량 추출과정으로 구성되며 중급 처리 과정으로 특징 베이스 분류, 기하학적 토큰 관계성, 인지적 조직과 집단화 과정으로 구성되어 있다. This paper describes the knowledge extraction for image understanding in knowledge based system. The current set of low level processes operate on the numerical pixel arrays, to segment the image into region and to convert the image into directional image, and to calculate feature for these regions. The current set of intermedate level processes operate on the results of earlier knowledge source to build more complex representations of the data. We have grouped into thee categories : feature based classification, geometric token relation, perceptual organization and grouping.

CATV망을 위한 자동화 장치구현 사례 연구

곽윤식 한국정보통신학회 2003 한국정보통신학회논문지 Vol.7 No.4

본 논문은 CATV 망 관련 장치 구현에 관한 것으로 기존의 수동형 장치의 비효율성을 제거하기 위해 자동화된 집중식 Headend 시스템 및 분배장치를 구현하였다. 이를 위해 기존의 주파수대역 중에서 비디오 신호의 송신에 사용되지 않은 대역을 확보하고 이를 제어신호의 송ㆍ수신이 이루어지는 제어대역으로 사용하는 송수신 시스템 및 자동화 분배기를 설계하였으며, 상ㆍ하향통신 및 하향통신방식이 공유된 형태로 RS-232를 이용한 9600bps의 CATV 망을 위한 통합관리 시스템을 구현하였다. This study is about the development of a system related to the CATV network. It intends to develop an automatically centralized Headend system and a distributive system to remove the ineffectiveness of the established manual system. To achieve this goal, we took a pan of bandwidth, which is not used for the transmission of video signals in the established frequency bandwidth, and used it for the transmission and receiver of controlling signals. By this way we could design a system of transmission and receiver and a automatic distributive system. We developed an information management system for the 9600bps CATV using RS-232 of forward/backward communication and backward communication.

Relaxation을 이용한 2차원 물체의 형상매칭에 관한 연구

곽윤식,이대령 한국통신학회 1993 韓國通信學會論文誌 Vol.18 No.1

본 논문은 2차원 물체의 형상 매칭에 관한것으로 다각근사화된 단순 2차원 물체에 적용하였다. 많은 형상 매칭 방법론이 수학적 벡터의 의현에 기초를 두고 확솔적인 패턴 인식을 사용하고 있다. 유출된 형상의 다양성과 많은 데이타량은 형상의 전체적인 구조의 관계를 나타내는데 단점을 갖고 있다. 본 논문에서는 영상을 다 각근사적 과정를 통하여 Relaxation 라벨링 기술을 이용함으로써 형상 매칭의 지점을 해결하였다. This paper prrsents shape matching of two-dimensional object. This shape matching is applied to two-dimensional simple c10sedcurves represented by polygons. A large number of shape matching procedures have proposed baseed on teh view that shape can be represented by a vector of numerical features, and that this representation can be matched using techniques from statical pattern recognition. The varieties of features that have been extracted from shapes and used to represent them are numerous. But all of these feature-based approches suffer from the shortcoming that the descriptor of a segment of a shape do not ordinarily bear any simple relations hip to the description for the entire shape. We solve the segment matching problem of shape matching, defined as the recognition of a piece of a shape as approximate match to a part of large shape, by using relaxation labeling technique.

CATV망의 통합관리를 위한 시스템 구현

郭允植 충주대 2003 産業科學論文集 Vol.11 No.-

This study is about the development of a system related to the CATV network. It intends to develop an automatically centralized Headend system and a distributive system to remove the ineffectiveness of the established manual system. To achieve this goal, we took a part of bandwidth, which is not used for the transmission of video signals in the established frequency bandwidth, and used it for the transmission and receiver and a automatic distributive system. We developed an information management system for the 9600bps CATV using RS-232 of forward/backward communication and backward communication. Based on window, It consist of ID generation, transmitter/receiver, control and backup part.

인터넷디스크 기반의 개선된 하이브리드 웹솔루션 시스템

곽윤식 충주대학교 2006 한국교통대학교 논문집 Vol.41 No.-

본 논문은 인터넷 디스크를 기반으로 한 하이브리드 웹 솔루션에 관한 것으로. 기존의 인터넷 디스크를 기반으로 한 웹 솔루션의 한계성을 극복하였다. 즉 사용자 단말기의 한계성을 극복하여 PC를 비롯한 모바일 장치가 공유의 메모리를 엑세스 가능하도록 설계되었으며 하이브리드 형식의 혼합형 컨텐츠 서비스가 가능하고, 실시간 서비스가 가능하다. 또한 본 시스템의 경우 기존의 단일 서비스에서 벗어나 복합서비스를 제공할 수 있는 메커니즘을 구축하였다. 이를 통해 웹하드와 메일서비스, 블로그서비스과 같은 하이브리드 서비스를 제공할 수 있도록 인터넷 디스크 및 파일시스템을 설계, 구현하였다. The preference of mobile device using wireless network has recently increased due to a wider spread of smart phone using wireless LAN (Local Area Network). Under these circumstances that wireless network is frequently used, the value of mobile device has also increased for its mobility and conveniency. On the other hand, because of a limit to the storage capacity of the mobile device, it has limited capacity in its applications as well as toward such large volume data as moving pictures. For this reason, there has been a lot of research to expand the storage capacity of mobile device. However, the storage card devices that can be attached to mobile device are still highly expensive. In addition, the technology has been suggested that the internet disk, which is the large volume storage in the desk-top system, can be used for mobile device. But this technology does not go beyond that of up-loading and down-loading. These established technologies do not resolve the problem of short storage capacity, but simply make it possible to share data. In other words, it goes further beyond up-loading and down-loading; it recognizes a remote storage as a storage card and eventually resolves the storage problem. Also, it works in a way that one storage system is applied to many different devices, which makes it possible to share data and thereby keep the coherence.