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푸옹 ( Phuong Chu ),조성재 ( Seoungjae Cho ),심성대 ( Sungdae Sim ),곽기호 ( Kiho Kwak ),조경은나 ( Kyungeun Cho ) 한국정보처리학회 2016 한국정보처리학회 학술대회논문집 Vol.23 No.2
In this study we propose a novel approach to segment a terrain in two parts: ground and none-ground. The terrain is gained by a multi-channel 3D laser range sensor. We process each vertical line in each frame data. The vertical line is bounded by the sensor’s position and a point in the largest circle ofthe frame. We consider each pair of two consecutive points in each line to find begin-ground and end-ground points. All points placed between a begin-ground point and an end-ground point are ground ones. The other points are none-ground. After examining all vertical lines in the frame, we obtain the terrain segmentation result.
푸옹 ( Phuong Chu ),뉴엔휴 ( Nguyen Trong Hieu ),박용운 ( Yong Woon Park ),김준오 ( Junoh Kim ),조경은나 ( Kyungeun Cho ) 한국정보처리학회 2016 한국정보처리학회 학술대회논문집 Vol.23 No.2
In this paper, we propose a novel approach to improve the accuracy for multiple low-cost drones in indoor environment. When the drones are flying, we employ sensors for checking their position in real-time. If the drones move out of their correct positions, the corresponding instructions are sent immediately. In another thread, we calibrate direction of the drones by checking yaw value. The adjustment is repeated until the drones locate at right position and direction.
Gradient Field 기 반 3D 포인트 클라우드 지면분할 기법
호앙 ( Hoang Vu ),푸옹 ( Phuong Chu ),조성재 ( Seoungjae Cho ),장위강 ( Weiqiang Zhang ),문명운 ( Mingyun Wen ),심성대 ( Sungdae Sim ),곽기호 ( Kiho Kwak ),조경은 ( Kyungeun Cho ) 한국정보처리학회 2016 한국정보처리학회 학술대회논문집 Vol.23 No.2
This study proposes a novel approach for ground segmentation of 3D point cloud. We combine two techniques: gradient threshold segmentation, and mean height evaluation. Acquired 3D point cloud is represented as a graph data structures by exploiting the structure of 2D reference image. The ground parts nearing the position of the sensor are segmented based on gradient threshold technique. For sparse regions, we separate the ground and nonground by using a technique called mean height evaluation. The main contribution of this study is a new ground segmentation algorithm which works well with 3D point clouds from various environments. The processing time is acceptable and it allows the algorithm running in real time.
박지선 ( Jisun Park ),치옥용 ( Yuong Xi ),푸옹 ( Phuong Chu ),김준오 ( Junoh Kim ),조경은 ( Kyungeun Cho ) 한국정보처리학회 2017 한국정보처리학회 학술대회논문집 Vol.24 No.1
최근 투명 스크린을 이용한 인터랙티브 상품 전시 시스템은 다양하게 상용화되고 있다. 하지만 기존 시스템은 사용자와 실제 상품간의 인터랙션이 아닌 사용자와 투명 스크린 속 콘텐츠간의 인터랙션에 불과하다. 본 논문에서는 동작인식 기술 및 실시간 사용자 분석을 통한 선호상품 추천기술을 결합한 투명 스크린 기반 인터랙티브 상품 전시 시스템을 구현 및 실험하였다.