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피라미드 데이타 구조하에서 상관자를 이용한 동적인 물체 추적
김명진(Myoung J. Kim),한준희(Joon H. Han) 한국정보과학회 1991 한국정보과학회 학술발표논문집 Vol.18 No.2
움직이는 물체를 추적하는 것은 컴퓨터 비전 문제들 가운데 어렵고 중요한 것들중 하나이다. 본 논문은 피라미드 이미지 데이타 구조하에, 전 작업으로서 시공간 필터(Spatiotemporal Filter)를 사용하여 움직이는 물체를 포착한 후, 상관자 계수(Correlation coefficient)를 이용하여 계층적으로 탐색하여 동적 환경하의 움직이는 물체를 추적하는 시스템을 제시한다. 이 시스템은 움직이는 물체를 추적하는 카메라의 구동에 따른 실제적인 잡상(Noise)문제를 해결하고 효율적으로 물체를 추적한다. 또, 서로 다른 배경에 있는 물체를 추적하므로 구동자의 관성에 따른 추적 속도 감소 요인을 제거 할 수 있다.
곽태신 ( Tae Sin Gwak ),김동구 ( Dong Goo Kim ),김주영 ( Ju Young Kim ),배기상 ( Gi Sang Bae ),최선복 ( Sun Bok Choi ),조일주 ( Il Joo Jo ),신준연 ( Joon Yeon Shin ),이성곤 ( Sung Kon Lee ),김명진 ( Myoung Jin Kim ),김민준 ( Min J 대한본초학회 2014 大韓本草學會誌 Vol.29 No.3
Objective : Portulaca oleracea (PO) has been used as an important traditional medicine for inflammatory and bacterial diseases in East Asia. However, the protective effects of PO on acute pancreatitis (AP) is not well-known. Therefore, this study was performed to identify the anti-inflammatory and prophylactic effects of PO on cerulein-induced AP. Methods : AP was induced in mice via intraperitoneal injection of supramaximal concentrations of the stable cholecystokinin analogue cerulein (50 ㎍/㎏) given every hour for 6 times. Water extracts of PO (100, 300, or 500 ㎎/㎏) was administrated intra-peritoneally 1 h prior to the first injection of cerulein. The mice were killed at 6 h after the final cerulein injection. Pancreas and lung were rapidly removed for morphologic and histochemical examination, myeloperoxidase (MPO) assay. Blood samples were taken to determine serum amylase and lipase activities. Results : Administration of PO significantly inhibited pancreatic weight/body weight ratio, pancreas andlung histological injury. And MPO activity which indicates neutrophil infiltration was inhibited by PO extracts on cerulein-induced pancreatitis. In addition, PO administration inhibited digestive enzymes such as serum amylase and lipase activity on cerulein-induced pancreatitis. Conclusion : Our results could suggest that pre-treatment of PO reduces the severity of cerulein-induced AP, thereby, PO could be used as a protective agent against AP. Also, this study could give a clinical basis that PO could be a drug or agent to prevent AP.