• 로봇학회논문지
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• 제9권4호
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• pp.242-249
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• 2014

By a SLAM (simultaneous localization and mapping) method, we get a map of an environment for autonomous navigation of a robot. In this case, we want to know how accurate the map is. Or we want to know which map is more accurate when different maps can be obtained by different SLAM methods. So, several methods for map comparison have been studied, but they have their own drawbacks. In this paper, we propose a new method which compares the accuracy or error of maps relatively and quantitatively. This method sets many corresponding points on both reference map and SLAM map, and computes the translational and rotational values of all corresponding points using least-squares solution. Analyzing the standard deviations of all translational and rotational values, we can know the error of two maps. This method can consider both local and global errors while other methods can deal with one of them, and this is verified by a series of simulations and real world experiments.

• 한국소음진동공학회논문집
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• 제22권2호
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• pp.156-162
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• 2012

This paper presents differences of road traffic noise maps were generated by using the draft map and two digital maps with different versions. As a first step, the calculation of the areas of excessive noise exposure was made for the draft map and each digital map version. Subsequently, the areas of excessive noise exposure were compared so as to determine how different from each other. Then, comparison of the populations exposed to excessive noise was also conducted in the same way. It was found that the most accurate noise map was obtained when using the combination of the draft map containing all attribute information and the digital map Ver 2.0. This result indicates that more information on the height and the number of floors of the individual building is required in order to obtain more accurate population exposed to excessive noise, thus creating a more accurate noise map.

• 대한감각통합치료학회지
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• 제16권1호
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• pp.35-44
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• 2018

목적 : 본 연구의 목적은 국내에 Miller Assessment for Preschoolers(MAP)을 사용하기 위해 필요한 번역, 역번역, 문항수정을 실시하고, 내용타당도를 검증하는 것이다. 연구방법 : 연구는 작업치료(학)과 교수, 번역가, 또는 작업치료사들을 대상으로 번역, 비교 통합 I, 역번역, 비교 통합 II, 이해도검증, 문항수정의 절차를 거쳤다. 자료 분석은 Microsoft office의 Excel을 이용하여 Content Validity Indices(CVI)를 구하였다. 결과 : 원본 MAP를 번역하여 교수 집단을 대상으로 내용타당도 검증시 평균 $3.66{\pm}0.40$점이었고 item-level CVI(I-CVI) 0.94, overal scale CVI(S-CVI) 0.83으로 나타났다. 원본 MAP과 영어로 역번역한 MAP의 내용타당도를 살펴본 결과는 평균 3.14점으로 나타났고 오류내용은 생략 13회, 용어오류 11회, 대체 6회, 순서오류 6회, 추가 3회로 나타났다. 치료사 9명을 대상으로 이해도 검증을 한 결과, 평균 $3.66{\pm}0.27$점이었고 I-CVI 0.93, S-CVI 0.58로 나타났다. 결론 : MAP의 국내 사용을 위하여 동시타당도, 구성타당도, 검사-재검사신뢰도, 검사자간신뢰도, 내적일치도 연구 등의 연구가 추가적으로 필요하다.

• 한국인쇄학회지
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• 제20권1호
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• pp.54-64
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• 2002

For the efficient work of map printing and quality improvement, we experimented on abrasion-resistance and beam-endurance of 5 kinds of map papers (offset paper, art paper, domestic map paper, foreign map paper, and Tyvek paper). The results obtained that imported and domestic map paper were superior to the others in endurance-proof.

• 수산해양교육연구
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• 제29권3호
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• pp.799-810
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• 2017

In this study, to raise the scientific literacy for students, the teaching and learning program was developed by applying the Circle Map. The purpose of this study was to find out the Effect of Elementary Science Teaching Program with Circle Map on Learning Motive and Learning Achievement. To this end, the 6th grade classroom of A-elementary school located in Jeju-city was selected the experimental group (25 patients). And the other 6th grade classroom in the same school was selected to the comparative group (25 patients). The experimental group was conducted applying the Circle Map. Comparison group has been conducted lesson program in accordance with the general science class teacher guide. Was through a pre-test of science learning motivation and academic achievement level can be assumed in the same group. After completing the experimental treatment by conducting a post-mortem examination was statistically validated. In this study, the following conclusions were obtained. First, elementary science class which applied Circle Map had the effect of to improve the scientific motivation(p <.05). In particular, association in the experimental group were higher than the scores of the comparative group, the difference was significant. Second, the Circle Map applied to elementary science class had a significant effect on improving science achievement. The experimental group which applied Circle Map was higher than the comparative group in science achievement post-test comparison. Between the groups showed a significant difference between the two groups(p <.05). The above findings, Elementary science class which applied Circle Map can be concluded to be effective in science and science achievement motivation. Therefore, applying the Circle Map of elementary science class could be useful in science teaching and learning methods. In addition, when it is determined through the previous study, applying the Circle Map classes will be able to derive a meaningful learning also subjected to a number of fields and areas.

• 한국소음진동공학회:학술대회논문집
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• 한국소음진동공학회 2011년도 춘계학술대회 논문집
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• pp.193-194
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• 2011

• 대한원격탐사학회:학술대회논문집
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• 대한원격탐사학회 2002년도 Proceedings of International Symposium on Remote Sensing
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• pp.766-771
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• 2002

Automatic change detection based on the vector-to-raster comparison is hard especially in high-resolution image. This paper proposes a method to designate roads in high-resolution image in sequential manner using the information from vector map in which Hough transform is used for reliability. By its linearity, the road of urban areas in a vector map can be easily parameterized. Following some pre-processing to remove undesirable objects, we obtain the edge map of raster image. Then the edge map is transformed to a parameter space to find the selected road from vector map. The comparison is done in the parameter space to find the best matching. The set of parameters of a road from vector map is treated as the constraints to do matching. After designating the road, we may overlay it on the raster image for precise monitoring. The results can be used for detection of changes in road object in a semi-automatic fashion.

• 한국지리정보학회지
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• 제21권2호
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• pp.44-55
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• 2018

기후변화에 대응하기 위한 정책 수립과 이행을 위해 온실가스 인벤토리 작성의 중요성이 대두되고 있다. 이에 따라, 토지이용 항목과 변화들에 대해 공간 명시적으로 나타낸 Approach 3 수준의 Land Use, Land-Use Change and Forestry(LULUCF) 매트릭스 구축 필요성이 제기되고 있다. 본 연구에서는 LULUCF 매트릭스의 산림 항목을 중심으로 연속지적도, 중분류 토지피복지도, 임상도, 도시생태현황지도를 활용하여 LULUCF 매트릭스 구축에 적합한 공간정보를 검토하였다. 각 공간정보에 대한 분류 속성 비교를 실시하였고 충청남도 보령시를 대상으로 양적(면적) 비교, 질적(특성) 비교를 실시하였다. 양적 비교 결과 산림의 면적이 임상도에서 최고 50.42%($303.79km^2$), 지적도에서 최저 46.09%($276.65km^2$)의 차이를 보였다. 질적 비교 결과 자료 구축 범위 차이, 자료 구축 목적 차이, 분류 항목 차이, 일필일목의 원칙 적용 여부의 차이, 자료구축 시기 차이 등 5가지 질적 특성의 차이를 확인하였다. 연구 결과 도시생태현황지도가 LULUCF 매트릭스 구축에 가장 적합한 공간 정보로 판단되었으나 전국구축이 되어있지 않은 한계로 토지피복지도가 가장 적합한 것으로 검토되었다. 또한, 도시생태현황지도, 임상도, 토지피복지도 등을 서로 종합하여 LULUCF 매트릭스를 구축하게 될 경우 각 공간정보의 한계를 보완할 수 있을 것으로 사료된다. 추후 전국토를 대상으로 하는 1:5,000 수준의 세분류 토지피복지도 및 도시생태현황지도가 완료될 경우 LULUCF 매트릭스 작성의 정밀도를 향상시킬 수 있을 것으로 판단된다.

• 한국토양비료학회지
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• 제49권5호
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• pp.469-479
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• 2016

Kimchi cabbage is one of the most important vegetables in Korea and a target crop for market stabilization as well. In particular Kimchi cabbages in a highland area are very sensitive to the fluctuations in supply and demand. Yield variability due to growth conditions dictates the market fluctuations of Kimchi cabbage price. This study was carried out to understand the distribution of the highland Kimchi cabbage growth status in Anbandeok. Anbandeok area in Gangneung, Gangwon-do, Korea is one of the main producing districts of highland Kimchi cabbage. The highland Kimchi cabbage status map of each growth factor was obtained from unmanned aerial vehicle (UAV) imagery and field survey data. Six status maps include UAVRGB image map, normalized difference vegetation index (NDVI) distribution/anomaly map, Crop distribution map, Planting/Harvest distribution map, Growth parameter map and Growth disorder map. As a result, the highland Kimchi cabbage status maps from May 31 to Sep. 6 in 2016 were presented to show spatial variability in the field. The benefits of the highland Kimchi cabbage status map can be summarized as follows: crop growth monitoring, reference for field observations and survey, the relative comparison of the growth condition in field scale, evaluation of growth in comparison of average year, change detection of annual crops or planting areas, abandoned fields monitoring, prediction of harvest season etc.

• 방송공학회논문지
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• 제14권5호
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• pp.551-560
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• 2009

본 논문에서는 MPEG 3차원 비디오 표준 깊이정보 맵에 대한 효율적인 무손실 압축 방법을 제안한다. 일반적으로 깊이정보 맵을 부호화할 때 자연영상에 적용되는 H.264 등의 동영상 부호화 방법을 그대로 사용하고 있는데, 이러한 부호화 방법은 깊이정보 맵의 영상특성을 고려하지 않은 방법이다. 본 논문에서는 깊이정보 맵의 무손실 압축 방법으로 MPEG-4 Part-2 Visual의 이진 형상 부호화를 이용한 비트평면 부호화 방법을 제안하였다. 실험결과로서 제안하는 방법이 28.91:1의 압축률을 실현하였고, 화면 내 예측만을 수행한 경우에 JPEG-LS보다 24.84%, JPEG-2000보다 39.35%, H.264 (CAVLC 적용)보다 30.30% 그리고 H.264 (CABAC 적용)보다 16.65% 정도의 비트량 절감을 실현하였고, 또한 화면 내 예측뿐만 아니라 화면 간 예측을 모두 수행한 경우에 H.264 (CAVLC 적용)보다 36.22% 그리고 H.264 (CABAC 적용)보다 23.71% 정도의 비트량 절감을 실현할 수 있었다.