• ETRI Journal
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• 제37권5호
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• pp.990-1000
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• 2015

This paper presents an overlapping pattern substitution (PS) method. The original overlapping PS method as a reversible data hiding scheme works well with only four pattern pairs among fifteen possible such pairs. This paper generalizes the original PS method so that it will work well with an optimal pair from among the fifteen possible pattern pairs. To implement such an overlapping PS method, changeable and embeddable patterns are first defined. A class map is virtually constructed to identify the changeable and embeddable pairs. The run-lengths between consecutive least probable patterns are recorded. Experiments show that an implementation of our overlapping PS method works well with any possible type of pairs. Comparison results show that the proposed method achieves more embedding capacity, a higher PSNR value, and less human visual distortion for a given embedding payload.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 1998년도 추계종합학술대회 논문집
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• pp.951-954
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• 1998

This paper describes the implementation of the machine vision system and the method of classifying the objects. Its system described in this paper is consisted of robot, conveyer system, warehouse, and machine vision. This system first recognizes the object on conveyer, and then robot moves it to the warehouse. The position of the object on conveyer is always not constant, because it is not easy to extract the feature of its object and classify it into one of several categories. In this paper, to classify or inspect the pattern of the object, we propose the method of template matching using feature vector such as position invariant moment and mophological operation such as opening and closing. And we indentified an unregistered object using unsuperviser learning method and assigned it to the new pattern. We implemented its system and obtained satisfied results.

• 한국정보처리학회논문지
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• 제7권6호
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• pp.1818-1826
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• 2000

This research is one the design and implementation of XSL document authoring system based on the XSL pattern to transform XML document. This system is developed not according to the rule of conventional CSS methods but according to the rule of XSL syntax for document processing language of SML structure. The XSL authoring system supports Korean character documents and is available of various kinds of pattern generations so that it is useful for generation of XSL document. This system is implemented for the environment of Window NT2000 in compatible IBM PC an develops by Visual J++6.0.

• 대한전자공학회논문지
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• 제26권10호
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• pp.1576-1583
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• 1989

In this paper, we describe real-time optical implementation of the Hopfield neural network model for two-dimensional associative memory by using commercial LCTV and Multifocus For real-time processing capability, we use LCTV as a memory mask and a input spatial light modulator. Inner product between input pattern and memory matrix is processed by the multifocus holographic lens. The output signal is then electrically thresholded fed back to the system input by 2-D CCD camera. From the good experimental results, the proposed system can be applied to pattern recognition and machine vision in future.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2002년도 ITC-CSCC -2
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• pp.1284-1287
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• 2002

A fast algorithm for a circular pattern recognition from a binary edge image is proposed in this paper. The implementation of this algorithm onto an FPGA is designed using Verilog-HDL where a target device is Altera EPF10K100ARC240-3. For a 256 ${\times}$ 256-pixe1 binary edge image assuming a real watermelon in a greenhouse, improved circuit performance of the proposed design was confirmed.

• 한국정보처리학회논문지
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• 제7권5호
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• pp.1426-1433
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• 2000

As distributed computing systems become popular, many modeling techniques and methods have been developed in specify the specification formally and verify the distributed/concurrent sytems. In spite of importance of communication in distributed object-oriented systems, specifying of communication method generally has not been emphasized in the design phase. One reason is due to the system designer misunderstanding, that is, a specification needs to be independent on the implementation. However, since defining communication pattern indistributed object-oriented systems is more serious than the required message passing method in the design phase. specifying the communication pattern is necessary instead of postponing until the implementation. In this paper, two formal specification techniques, temporal logic method and Petri nets method, for the communication in distributed systems are discussed. One is based on the temporal logic, which specifies the different patterns of primitive predicates. This method enable to define the underlying mechanism which can be interpreted as constraints. The Petri net method helps to specify the dynamic behavior of communicational patterns using the properties of Petri nets.

• 전기학회논문지
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• 제60권1호
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• pp.156-160
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• 2011

This paper describes the design and implementation of a System-on-a-Chip (SoC) for pattern recognition to use in embedded applications. The target Soc consists of LEON2 core, AMBA/APB bus-systems and custom-designed accelerators for Gaussian Pyramid construction, lighting compensation and histogram equalization. A new FPGA-based prototyping platform is implemented and used for design and verification of the target SoC. To ensure that the implemented SoC satisfies the required performances, a pattern recognition application is performed.

• 한국통신학회논문지
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• 제16권6호
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• pp.545-555
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• 1991

본 논문에서는 단층 퍼센트론 모델의 학습기능과 신경회로망 형성메모리의 오류정정 능력이 서로 보완적으로 결합된 새로운 적응 패턴인식 시스템의 광학적구현을 실현하였다. 여기서, 단층 퍼센트론 모델은 2차원 LCTV 공간 광변조기를 이용하여 편광인코딩방법과 비전형 양자화 방법으로 구현하였으며, Hopfield 연장메모리는 2차원 모델로 황장하고multifocus holoens를 이용하여 광학적으로 구현하였다. 아리비아 숫자 짝.홀수 판별에 고나한 광학적 실험 결과, 오류 및 부분 입력에 대한 정확한 패턴 분류가 됨을 확인함으로서, 본 논문에서 제시한 새로운 적응 광 패턴인식 시스템이 실제로 영상처리, 패턴인식 등의 분야에서 그 응용 가능성을 제시하였다.

• 한국경영과학회:학술대회논문집
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• 한국경영과학회/대한산업공학회 1999년도 춘계공동학술대회:정보화시대의 지식경영
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• pp.380-380
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• 1999

• 한국전자거래학회:학술대회논문집
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• 한국전자거래학회 2004년도 e-Biz World Conference
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• pp.313-316
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• 2004

BCF ·Business Collaboration Framework ·Object implementation neutral approach to the exchange of global business requirements(omitted)