• 전자공학회논문지S
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• 제36S권8호
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• pp.55-64
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• 1999

본 논문에서는 가변하는 다중 닻점을 이용하는 새로운 색역 사상 방법을 제안한다. 제안된 방법은 기존의 한 개의 닻점을 사용하는 색역 사상에서 발생하는 휘도 범위의 축소를 가변하는 닻점을 이용하여 보상하여준다. 또한 이 과정에서 연속 계조 칼라를 재현하기 위하여 색역을 여러 영역으로 구분하여 각각의 영역에서 다른 닻점을 사용하는 다중 닻점 방식을 제안한다. 따라서 본 논문에서는 저가의 칼라 출력장치에서 고화질의 칼라를 재현할 수 있게 한다.

• 전기학회논문지
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• 제63권11호
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• pp.1564-1570
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• 2014

An electric vehicle (EV) not only receives electric power from the electric vehicle supply equipment (EVSE), but it also exchanges the information regarding charging process with the power gird through the EVSE. However, the EV and EVSE communicate using the ISO/IEC 15118 standard while the EVSE and power grid communicate using the IEC 61850 standard. Therefore, the EVSE should support both the ISO/IEC 15118 and IEC 61850 standards, and provide a data mapping function between the two communication protocols so that the EV and power grid, which support different protocols, can communicate with each other throughout the charging process. In this paper, we propose a mapping method of the EVSE, which converts the ISO/IEC 15118 data to IEC 61850 and vice versa, based on the XML schema of each protocol. The proposed method converts the data using the XSL (eXtensible Stylesheet Language) method, which defines the data mapping between two XML schemas. Our approach is more flexible and easier to maintain against changes in charging scenarios and the standards than other existing approaches such as one-to-one data mapping methods.

• 대한기계학회논문집A
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• 제30권9호
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• pp.1124-1133
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• 2006

This paper addresses the localization and navigation problem using invisible two dimensional barcodes on the floor. Compared with other methods using natural/artificial landmark, the proposed localization method has great advantages in cost and appearance, since the location of the robot is perfectly known using the barcode information after the mapping is finished. We also propose a navigation algorithm which uses the topological structure. For the topological information, we define nodes and edges which are suitable for indoor navigation, especially for large area having multiple rooms, many walls and many static obstacles. The proposed algorithm also has an advantage that errors occurred in each node are mutually independent and can be compensated exactly after some navigation using barcode. Simulation and experimental results. were performed to verify the algorithm in the barcode environment, and the result showed an excellent performance. After mapping, it is also possible to solve the kidnapped case and generate paths using topological information.

• 한국정보과학회논문지:시스템및이론
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• 제30권11호
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• pp.663-674
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• 2003

범프 매핑은 복잡한 모델링 과정 없이 기하 매핑을 통하여 땅콩 껍질의 돌기와 같은 객체 표면의 세밀한 부분을 표현해내는 기법이다. 그러나 이 기법은 법선 벡터 쉐이딩과 같은 상당한 복잡도를 가진 연산을 픽셀 당 처리해줘야 하므로, 이의 하드웨어 구현은 상당한 비용을 필요로 한다. 본 논문에서는 극 좌표계를 이용한 새로운 범프 매핑 알고리즘 및 하드웨어 구조를 제안한다. 이는 참조 공간으로의 변환을 위한 새로운 벡터 회전 방식과 연산이 최소화된 조명 계산 방식을 갖는 구조로, 기존의 구조에 비해 범프 매핑을 효과적으로 수행한다. 결과적으로 제안하는 구조는 범프 매핑에 필요한 연산 및 하드웨어를 상당량 줄였다.

• Journal of Information Display
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• 제3권4호
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• pp.19-22
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• 2002

In this paper, we introduce an efficient three-dimensional magnetic field mapping system for a Deflection Yoke (DY) in Cathode-Ray Tube (CRT). A three-axis Hall probe mounted in a small cylindrical bar and three-stepping motors placed in a non-magnetic frame were utilized for the mapping. Prior to the mapping starts, the inner contour of DY was measured by a laser sensor to make a look-up table for inner shape of DY. Three-axis magnetic fields are then digitized by a three-dimensional Hall probe. The results of the mapping can be transformed into various output formats such as multi pole harmonics of magnetic fields. Field shape in one, two and three- dimensional spaces can also be displayed. In this paper, we present the features of this mapping device and some analysis results.

• 한국조경학회지
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• 제29권5호
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• pp.101-114
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• 2001

This study analyzed and examined literature and legislation in Korean and other countries to examine the concept and sense of mapping of forest functions that would be used as basic information for efficient application and management of forest ecosystems. The mapping of forest functions in Germany has been utilized to field data for efficient work and management of the ecosystem, and evaluation of forest environmental ecology by the mapping of forest functions has been applied directly or indirectly in country management plans, conservation of nature and landscape management plans. Forest protection areas in Korea were analysed for creating a map of forest functions. As the results, forest functions could be sorted into five categories, such as conservation area of forest production, prevention of disasters, landscape and abiological natural resource, valuable biotope and ecosystem and civil recreation. The mapping method was applied to these 5 categories important conservation targets. It is considered that mapping of forest functions in Korea can be used for systematic forest works and efficient ecosystem utilization and management, as well as it use basic data for environmental and ecological comprehension and evaluation on forest and green tract of land on the level of country development and utilization.

• 대한전자공학회논문지SP
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• 제38권4호
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• pp.371-380
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• 2001

본 논문에서는 균일한 색 분포를 위한 밝기 사상과 최대 색도 재현을 위한 색역 사상 방법을 제안한다. 기존의 밝기 사상시 발생하는 두 색역에서의 평균 밝기의 차이의 증가 및 어두운 영역과 밝은 영역에서의 색 변화의 차이가 증가하는 문제를 해결하기 위하여 각 색상의 정점에서의 밝기 차이를 최소화하고 밝은 영역과 어두운 영역에서의 균일한 색 분포를 가지는 밝기 사상 방법을 제안하였다. 또한, 최대 채도 유지 및 균일 색 분포를 위한 가변 닻점과 고정 닻점을 혼합으로 사용하는 색역 사상 방법을 제안하였다. 따라서 저가의 칼라 출력장치에서 고화질의 칼라를 재현할 수 있게 한다.

• JSTS:Journal of Semiconductor Technology and Science
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• 제15권6호
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• pp.634-646
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• 2015

Coarse-Grained Reconfigurable Architecture (CGRA) is a very promising platform that provides fast turn-around-time as well as very high energy efficiency for multimedia applications. One of the problems with CGRAs, however, is application mapping, which currently does not scale well with geometrically increasing numbers of cores. To mitigate the scalability problem, this paper discusses how to use the SIMD (Single Instruction Multiple Data) paradigm for CGRAs. While the idea of SIMD is not new, SIMD can complicate the mapping problem by adding an additional dimension of iteration mapping to the already complex problem of operation and data mapping, which are all interdependent, and can thus significantly affect performance through memory bank conflicts. In this paper, based on a new architecture called SIMD reconfigurable architecture, which allows SIMD execution at multiple levels of granularity, we present how to minimize bank conflicts considering all three related sub-problems, for various RA organizations. We also present data tiling and evaluate a conflict-free scheduling algorithm as a way to eliminate bank conflicts for a certain class of mapping problem.

• ETRI Journal
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• 제36권6호
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• pp.913-923
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• 2014

This paper proposes a global mapping algorithm for multiple robots from an omnidirectional-vision simultaneous localization and mapping (SLAM) approach based on an object extraction method using Lucas-Kanade optical flow motion detection and images obtained through fisheye lenses mounted on robots. The multi-robot mapping algorithm draws a global map by using map data obtained from all of the individual robots. Global mapping takes a long time to process because it exchanges map data from individual robots while searching all areas. An omnidirectional image sensor has many advantages for object detection and mapping because it can measure all information around a robot simultaneously. The process calculations of the correction algorithm are improved over existing methods by correcting only the object's feature points. The proposed algorithm has two steps: first, a local map is created based on an omnidirectional-vision SLAM approach for individual robots. Second, a global map is generated by merging individual maps from multiple robots. The reliability of the proposed mapping algorithm is verified through a comparison of maps based on the proposed algorithm and real maps.

• International Journal of Industrial Entomology and Biomaterials
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• 제20권2호
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• pp.37-43
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• 2010

The wild silkworm, Antheraea mylitta Drury (Lepidoptera: Saturniidae) is a polyphagous silk producing insect that feeds on Terminalia arjuna, T. tomentosa and Shorea robusta and is distributed in the forest belts in different states of India. Phenotypically distinct populations of the A. mylitta are called "eco-race" or "ecotypes". Genetic improvement of this wild silkworm has not progressed much due to lack of adequate information on the factors that control the expression of most of the economically important traits. Considering the amazing technological advances taking place in molecular biology, it is envisaged that it is now possible to take greater control on these intractable traits if a combination of genetic, molecular and bioinformatics tools are used. Linkage disequilibrium (LD) mapping is one such approach that has extensively been used in both animal and plant system to identify quantitative trait loci (QTLs) for a number of economically important traits. LD mapping has a number of advantages over conventional biparental linkage mapping. Therefore, LD mapping is considered more efficient for gene discovery to meet the challenge of connecting sequence diversity with heritable phenotypic differences. However, care must be taken to avoid detection of spurious associations which may occur due to population structure and variety interrelationships. In this review, we discuss how LD mapping is suitable for the dissection of complex traits in wild silkworms (Antheraea mylitta).