• Journal of the Korea Society of Computer and Information
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• v.19 no.11
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• pp.53-61
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• 2014

In this paper, we propose a method using an image received by the depth camera in order to separate the wall in a three-dimensional space indoor environment. Results of the paper may be used to provide valuable information on the three-dimensional space. For example, they may be used to recognize the indoor space, to detect adjacent objects, or to project a projector on the wall. The proposed method first detects a normal vector at each point by using the three dimensional coordinates of points. The normal vectors are then clustered into several groups according to similarity. The RANSAC algorithm is applied to separate out planes. The domain knowledge helps to determine the wall among planes in an indoor environment. This paper concludes with experimental results that show performance of the proposed method in various experimental environment.

• Journal of Korean Society for Geospatial Information Science
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• v.15 no.1 s.39
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• pp.17-22
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• 2007

In this study, we recognized and joined parts of buildings separated during LIDAR point segmentation utilizing scan line characteristics, with an additional function to recognize neighboring relation among point segments. And we applied the relation to suggest a method to recognize earth point segment. From the test, we could confirm that it does not drop down the efficiency of point segmentation to be added with the function of recognizing neighboring relation and it is possibile to combine point segments to form a complete shaped building and to recognize earth point segment.

• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2012.11a
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• pp.54-56
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• 2012

본 논문에서는 이어폰 및 헤드폰 환경에서 스테레오 음원의 공간 정보를 보존하고 청취자의 엔벨롭감을 향상시키기 위한 Binaural 렌더링 기법을 제안하였다. 스테레오를 그대로 Binaural 렌더링 하지 않고 업믹스를 통해 스테레오 음원을 5.1채널의 음원을 생성한 뒤에 5.1패널 포맷의 스피커 위치 기반에 의해 렌더링 시킨다. 제안된 알고리즘은 두 가지 단계로 나뉘는데 첫 번째 단계로 스테레오 음원을 주성분 분석법( PCA )을 통하여 primary와 ambient신호로 각각 분리 하고 두 번째 단계로 분리한 primary와 ambient신호를 스테레오의 공간 정보에 기반 하여 머리전달 함수 (HRTF)를 이용하여 렌더링 한다. 또한 초기 잔향을 이용한 외재화 기법을 통하여 음원을 머리 밖에 정위시킴으로써 음원의 공간감을 향상시켰다. 제안된 방법은 주관적인 평가를 통하여 기존의 방법보다 우수한 성능을 보임을 확인하였다.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.15 no.4
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• pp.267-277
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• 1990

In this paper, a method of separation and recognition of phonemes from a composite Korean character pattern through a state space search strategy which is a problem solving method in artificial intelligence is proposed. To correlate the separating of phonemes with their recognizing, the problem is represented into the state space, on which a search strategy is performed. For the minimization of search area, the structural information based on the composition rules of Korean characters and the positional information of phonemes in the basic forms are used. And the effectiveness of the approach is shown by a computer simulation.

• Digital Contents
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• no.6 s.145
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• pp.70-77
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• 2005

사이버 공간은 현실을 충실히 반영하지 않으며, 현실과 완전히 분리돼 있지도 않다. 하지만 사람들은 이 공간에서 자신의 행동과 생각이 증폭되고 확장되는 경험을 한다. 이뿐 아니라 상상만 했던 행동이 실제로 일어나기도 한다. 사이버 공간이 컴퓨터로 연결된 기계의 공간이 아니라 인간의 심리적 공간이 되기 때문이다. 이는 사이버 공간에 있는 캐릭터가 인간의 심리를 대변, 인간에게 사이버의 매력에 빠지도록 유도하기 때문이다. 이에 본지는 연재를 통해 <디지털콘텐츠 매력, 캐릭터의 원형을 찾아서>라는 주제로 어떻게 매력적인 캐릭터가 탄생하고 변천했는가를 살펴보고자 한다. 이번호에는 캐릭터 연구 중 '악'을 대변하는 캐릭터를 집중적으로 살펴보고자 한다.

• Digital Contents
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• no.5 s.144
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• pp.70-73
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• 2005

사이버 공간은 현실을 충실히 반영하지 않으며, 현실과 완전히 분리돼 있지도 않다. 하지만 사람들은 이 공간에서 자신의 행동과 생각이 증폭되고 확장되는 경험을 한다. 이뿐 아니라 상상만 했던 행동이 실제로 일어나기도 한다. 사이버 공간이 컴퓨터로 연결된기계의 공간이 아니라 인간의 심리적 공간이 되기 때문이다. 이는 사이버 공간에 있는 캐릭터가 인간의 심리를 대변, 인간에게 사이버의 매력에 빠지도록 유도하기 때문이다. 이에 연재를 통해‘디지털콘텐츠 매력, 캐릭터의 원형을 찾아서’라는 주제로 어떻게 매력적인 캐릭터가 탄생하고 변천했는가를 살펴보고자 한다.

• Magazine of korean Tunnelling and Underground Space Association
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• v.14 no.4
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• pp.49-52
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• 2012

• Magazine of korean Tunnelling and Underground Space Association
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• v.23 no.4
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• pp.30-37
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• 2021

• Journal of the Korean Institute of Landscape Architecture
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• v.43 no.3
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• pp.63-76
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• 2015

This study was carried out to suggest improvement plans for problems with the landscape areas of highway service areas. The survey factors were land use, placement of green area and land coverage in terms of spatial and environmental property. Noise and topographic structure in detached green areas were surveyed in terms of impact factor. The status of the planting area around each service area was analysed in regards to planting structure and planting landscape. As a result, the mean of rations of land use were 81.6% building and 18.4% green areas, which were composed of 5.4% landscape area, 9.1% buffer area, etc. Planting areas as usable space accounted for only 0.7%, and the result of noise measurement was different according to the distribution of highway and service area and type of detached green area. The mean of ratio of planting area was 18.4%, which consists of 6.7% landscape planting, 3.4% other green area, 4.6% buffer area, 2.0% buffer and landscape area, 1.1% shade planting and 0.5% landscape and shade planting. Most planting areas aim at landscape appreciation and areas in which visitors can relax and gain recreation were insufficient. The planting structures of service areas were 52.2% canopy layer, 11.8% shrubs and 9.4% canopy and shrub layers, and most of the planting areas were a single layer of green area. Multi-layered planting structures in the landscape and buffer areas were required and a shade planting area was needed to improve amenities as planting canopy layered trees. This study suggested improvement methods for based environments, spatial function and planting function in landscape areas.

• 한국지구물리탐사학회:학술대회논문집
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• 2006.06a
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• pp.155-160
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• 2006

In this paper, we propose a spatial filtering scheme using factorial kriging, one of geostatistical filtering methodin order to separate regional and residual gravity anomaly. This scheme is based on the assumption that regional anomalies have longer distance relation and residual anomalies have effected on smaller range. We decomposed gravity anomalies intotwo variogram models with long and short effectiveranges by means of factorial kriging. And decomposed variogram models produced the regional and residual anomalies. This algorithm was examined using by a synthetic gravity data, and applied to a real microgravity data to figure out abandoned mineshaft.