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반사체를 이용한 열영상 융합 카메라 캘리브레이션 방법 연구
임동준(Dong June Lim),김용은(Yong-Eun Kim),김정원(Kim Jeong Won),노형주(Noh Hyeong Ju),박재웅(Jae-Woong Park) 대한기계학회 2021 대한기계학회 춘추학술대회 Vol.2021 No.11
To improve the detection accuracy of autonomous vehicles system, a technology that integrates thermal and optical images is being developed in bad weather. First of all, it requires a calibration method to fuse images. For the calibration of images, a thermal imaging camera must be able to clearly distinguish areas with a calibration target that accurately creates heating areas. In the study, we used reflectors to prevent thermal diffusion. This allows the thermal imaging camera to accurately distinguish areas. Also, we developed an optical camera calibration method that uses an identical calibration target with the thermal imaging camera.
임동준(Dong June Lim),김용은(Yong-Eun Kim),김정원(Kim Jeong Won),노형주(Noh Hyeong Ju) 대한기계학회 2021 대한기계학회 춘추학술대회 Vol.2021 No.11
A thermal camera is a device that creates an image by capturing infrared energy, unlike an optical camera. Thus, to compensate for areas that optical cameras cannot detect, thermal cameras are often used with optical cameras. In the study, we propose a method to automatically and exactly match two images through the features of thermal and optical cameras. A distance measuring sensor is used to create a lookup table of a coordinate calibration area according to the distance. We matched accurately optical and thermal images through the created lookup table. The proposed calibration method was proven by obtaining precisely matched fusion images from validation experiments.
김지은(Jieun Kim),정찬영(Chan-young Jung),황웅(Woong Hwang),임동준(Dong June Lim),노형주(Hyeong-ju Noh) 한국HCI학회 2023 한국HCI학회 학술대회 Vol.2023 No.2
전 세계적으로 자율주행 기술의 개발 및 상용화 관련 연구가 진행되고 있으며, 이에 주행 상황 중 객체 검출 정보는 가장 기본적이며, 중요한 정보 중 하나이다. 본 논문에서는 반자율주행 중 발생할 수 있는 충돌 상황을 인지하여 운전자에게 충돌 경고를 하기 위하여, 카메라 센서 활용한 국내 도로 주행데이터를 취득하고, 이를 기반으로 주행상황에서 마주칠 수 있는 주요 동적/정적객체의 검출 방법 및 결과를 공유한다.
비스테로이드성 소염진통제의 장기 사용으로 유발된 하행십이지장 협착 1 예
박수헌,김진일,임동준,정인식,김재광,정규원,선희식,최규용,지정선,정현화,백창렬,노치호,민도준,한준열 대한소화기내시경학회 2001 Clinical Endoscopy Vol.23 No.2
In endoscopic clinical research studies of patients who take NSAIDs, 10% to 20% of patients develop gastric ulcers and 4% to 10% develop duodenal ulcers. Ulcers associated with chronic NSAIDs use are typically painless and are located in the prepyloric region of the stomach. These characteristics make NSAIDs potential causes of gastric outlet obstruction. There were multiple cases of single or multiple strictures that were found in the esophagus, small bowel and colon. Most of duodenal strictures were confined to bulbar area. Only one case of duodenal second portion diaphragmlike stricture was reported in association with acetylsalicylic acid. We experienced one case of chronic NSAIDs induced duodenal 2nd portion stricture in ankylosing spondylitis and rhemathoid arthritis patient and reported with a review of literature.