• The Transactions of the Korea Information Processing Society
• /
• v.1 no.1
• /
• pp.114-128
• /
• 1994

It is very difficult for a nonprofessional programmer in Koera to write a program with very High Level Language such as, V,REFINE, GIST, and SETL, because the semantic primitives of these languages are based on predicate calculus, set, mapping, or testricted natural language. And it takes time to be familiar with these language. In this paper, we suggest a method to reduce such difficulties by programming with the declarative, procedural constructs, and aggregate constructs. And we design and implement an experimental knowledge-based automatic programming system. called HAPS(Hangul Automatic Program System). HAPS, whose input is specification such as Hangul abstract algorithm and datatype or Hangul procedural constructs, and whose output is C program. The method of operation is based on rule-based and program transformation technique, and the problem transformation technique. The problem area is general problem. The control structure of HAPS accepts the program specification, transforms this specification according to the proper rule in the rule-base, and stores the transformed program specification on the global data base. HAPS repeats these procedures until the target C program is fully constructed.

• The Journal of the Korea Contents Association
• /
• v.18 no.1
• /
• pp.1-9
• /
• 2018

A keyboard system for hands-free virtual reality head mounted display using electrooculogram (EOG) signal which occurs during the eye-blinking is proposed. This system consists of display device, gyroscope sensor, gravity sensor and electro-encephalogram (EEG) sensor, and it is implemented with Unity3D engine for system control and graphic processing. If the input language of proposed keyboard system is Korean, i.e. Hangul, the Chonjiin keyboard method is utilized; but for the English spelling, numbers or special characters, $3{\times}4$ keyboard method is used in order to solve the spatial problem. By the implemented method, it can be verified that the user can handle the keyboard input of virtual reality head mounted display with only neck movement and EOG, instead of using hands.

• Journal of information and communication convergence engineering
• /
• v.1 no.1
• /
• pp.53-57
• /
• 2003

Chaos theory is a study researching the irregular, unpredictable behavior of deterministic and non-linear dynamical system. The interpretation using Chaos makes us evaluate characteristic existing in status space of system by tine series, so that the extraction of Chaos characteristic understanding and those characteristics enables us to do high precision interpretation. Therefore, This paper propose the new method which is adopted in extracting character features and recognizing characters using the Chaos Theory. Firstly, it gets features of mesh feature, projection feature and cross distance feature from input character images. And their feature is converted into time series data. Then using the modified Henon system suggested in this paper, it gets last features of character image after calculating Box-counting dimension, Natural Measure, information bit and information dimension which are meant fractal dimension. Finally, character recognition is performed by statistically finding out the each information bit showing the minimum difference against the normalized pattern database. An experimental result shows 99% character classification rates for 2,350 Korean characters (Hangul) using proposed method in this paper.

• Proceedings of the Korea Multimedia Society Conference
• /
• 2004.05a
• /
• pp.533-537
• /
• 2004

고도 정보사회의 진전에 있어 정보의 수집, 정보의 전달 등을 위해, 여러 IT기기가 사용 되어지고 있다. 이러한 상황 속에서 IT기기를 장애자나 고령자를 포함, 누구나가 쉽게 이용 할 수 있도록 하는 유니버설디자인은 매우 중요한 일이다. 특히 상체부자유자의 인터페이스 장치로서 시선입력장치가 주목 받고 있다. 이러한 시대적인 흐름에서 본 연구에서는 Eye-gaze Interface를 이용한 시선입력만으로 컴퓨터상에서 한글입력이 가능한 한글 입력 시스템을 개발 제안한다. 또한 본 연구의 목적으로는 기존의 키보드, 마우스에 의한 입력장치와 Eye-gaze Interface를 이용한 입력 장치와의 정점과 단점을 비교 분석하고, 정보 사회에 있어서의 장애자와 고령자들의 Barrier Free에 관한 연구를 기본 목적으로 하고 있다 본 연구의 Eye-gaze Interface는 Eye Tech Digital System회사의 Quick Glance System를 사용한다 장애자와 고령자를 대상으로 한 사용자 평가 실험에 의해 실험을 진행 하였으며, 한글의 음운규칙에 관한 연구를 기초로 한글뿐만 아니라 영어, 일본어가 입력 가능한 입력 시스템을 제안한다. 이것은 컴퓨터 조작이 곤란한 장애자와 고령자가 일반인과의 자연스러운 커뮤니케이션이 가능하도록 한 것이다. 향후 Eye-gaze Interface를 이용한 응용분야 또한 게임, 영상, Eye Book, 자동차운전 둥 다양한 분야에 적용 가능하리라 기대된다.

• Korean Linguistics
• /
• v.80
• /
• pp.125-150
• /
• 2018

This paper discusses several prerequisites for recording other languages by using Hunminjeongum (Hangeul). The scientific, systematic, and practical features of Hunminjeongum is undoubtedly obvious. Such a view of Hunminjeongeum is based on its iconicity, featural property and non-linearity. However, the existing conviction that Hunminjeongeum can transcribe all human sounds or that Hunminjeongeum is the only script which is easy for anyone to learn requires a more rigorous consideration. Given the fact that all scripts can be evaluated as equal, without one being more superior than the other, all scripts are optimized for recording the language in its own given linguistic context. Further, the function of a script is not just limited in a simple representation of a language. Adding new letters into the system of Hunminjeongeum or maintaining its current mode of notation can be problematic. First, it is important to solve computer-related issues: the registration of Hunminjeongum into the computer system as well as its output, problems regarding unicode, the new developments required for input devices, keyboards, fonts, and computer programs.

• The Journal of the Institute of Internet, Broadcasting and Communication
• /
• v.10 no.1
• /
• pp.63-68
• /
• 2010

Recently, to accelerate the Ubiquitous generation, the input interface of the mobile machinery and tools are actively being researched. In addition with the existing interfaces such as the keyboard and curser (mouse), other subdivisions including the handwriting, voice, vision, and touch are under research for new interfaces. Especially in the case of small-sized mobile machinery and tools, there is a increasing need for an efficient input interface despite the small screens. This is because, additional installment of other devices are strictly limited due to its size. Previous studies on handwriting recognition have generally been based on either two-dimensional images or algorithms which identify handwritten data inserted through vectors. Futhermore, previous studies have only focused on how to enhance the accuracy of the handwriting recognition algorithms. However, a problem arisen is that when an actual handwriting is inserted, the user must select the classification of their characters (e.g Upper or lower case English, Hangul - Korean alphabet, numbers). To solve the given problem, the current study presents a system which distinguishes different languages by analyzing the form/shape of inserted handwritten characters. The proposed technique has treated the handwritten data as sets of vector units. By analyzing the correlation and directivity of each vector units, a more efficient language distinguishing system has been made possible.

• Annual Conference on Human and Language Technology
• /
• 1992.10a
• /
• pp.321-328
• /
• 1992

컴퓨터의 보급과 활용이 늘어남에 따라 한글과 영문이 혼합된 문서 작성의 필요성이 계속 증대되고 있다. 컴퓨터 하드웨어 및 소프트웨어에서 사용자의 편리성과 효율성을 최대한 배려하는 "사용자 인터페이스"에 대한 연구가 증대되고 있어서 보다 편리한 한/영 혼용문서의 작성 방법이 요구되고 있다. 키보드를 통한 한/영 혼용문 입력시에 입력된 문서의 내용을 입력 오토마타 및 사전 수록 정보를 토대로 분석하여 자동적으로 한글 또는 영문으로 변환하는 자동토글 시스템 개발에 대해 설명하고, 현재의 시스템이 해결하지 못한 문제점 및 개선 방향을 기술한다.

• Journal of Multimedia Information System
• /
• v.8 no.1
• /
• pp.31-34
• /
• 2021

The classical HMM is defined by a parameter triple �� = (��, A, B), where each parameter represents a collection of probability distributions: initial state, state transition and output distributions in order. This paper proposes a new stationary parameter e = (e1, e2, …, eN) where N is the number of states and et = P(|xt = i, y) for describing how an input pattern y ends in state xt = i at time t followed by nothing. It is often said that all is well that ends well. We argue here that all should end well. The paper sets the framework for the theory and presents an efficient inference and training algorithms based on dynamic programming and expectation-maximization. The proposed model is applicable to analyzing any sequential data with two or more finite segmental patterns are concatenated, each forming a context to its neighbors. Experiments on online Hangul handwriting characters have proven the effect of the proposed augmentation in terms of highly intuitive segmentation as well as recognition performance and 13.2% error rate reduction.

• Journal of the Korean Society for Library and Information Science
• /
• v.8
• /
• pp.3-72
• /
• 1981

The necessity of computerizing the Central National Library of Korea has been widely recognized. The purpose of this research is to develop Korean Machine Readable Cataloging system as a first step toward an integrated library system and suggests the ways of utilizing the MARC file in Korean libraries as well as in the Central National Library. In this paper the following studies are included: 1. An analysis of the functions and current procedures of the Central National Library 2. Development of a standard record format for KOR MARC 3. Production and utilization of KOR MARC files 4. Identification of problems in developing KOR MARC system In conclusion, the following recommendations are made: 1. Standardization of the internal code and input/output equipments should be proceded for hangul and chinese data processing. 2. The libraries planning or having accomplished computerization process should be cooperative in standardizing and distributing bibliographic data bases including KOR MARC tapes. 3. Training of competent librarians and strong support from the government are required for a successful implementation of the Library's computerization project.

• The Journal of the Acoustical Society of Korea
• /
• v.16 no.5
• /
• pp.50-59
• /
• 1997

In this paper, we implement an automatic speech segmentation and labeling system which marks phone boundaries automatically for constructing the Korean speech database. We specify and implement the system based on conventional speech segmentation and labeling techniques, and also develop the graphic user interface(GUI) on Hangul $Motif^{TM}$ environment for the users to examine the automatic alignment boundaries and to refine them easily. The developed system is applied to 16kHz sampled speech, and the labeling unit is composed of 46 phoneme-like units(PLUs) and silence. The system uses both of the phonetic and orthographic transcription as input methods of linguistic information. For pattern-matching method, hidden Markov models(HMM) is employed. Each phoneme model is trained using the manually segmented 445 phonetically balanced word (PBW) database. In order to evaluate the performance of the system, we test it using another database consisting of sentence-type speech. According to our experiment, 74.7% of phoneme boundaries are within 20ms of the true boundary and 92.8% are within 40ms.