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효율적인 화상회의 동영상 압축을 위한 블록기반 얼굴 검출 방식
김기주,방경구,문정미,김재호,Kim, Ki-Ju,Bang, Kyoung-Gu,Moon, Jeong-Mee,Kim, Jae-Ho 한국통신학회 2004 韓國通信學會論文誌 Vol.29 No.9C
We propose a new fast, algorithm which is used for detecting frontal face in the frequency domain based on human skin-color using OCT coefficient of dynamic image compression and skin color information. The region where each pixel has a value of skin-color were extracted from U and V value based on DCT coefficient obtained in the process of Image compression using skin-color map in the Y, U, V color space A morphological filter and labeling method are used to eliminate noise in the resulting image We propose the algorithm to detect fastly human face that estimate the directional feature and variance of luminance block of human skin-color Then Extraction of face was completed adaptively on both background have the object analogous to skin-color and background is simple in the proposed algorithm The performance of face detection algorithm is illustrated by some simulation results earned out on various races We confined that a success rate of 94 % was achieved from the experimental results. 비디오화상회의 시스템을 위하여 동영상 압축 DCT 계수와 피부색정보를 이용하여 주파수 영역에서 정연 얼굴 을 실시간으로 검출하는 알고리즘을 제안한다. 동영상 압축과정 중에 얻어지는 DCT계수 값의 U 와 V 색상정보로 피부색 범위를 추출하며 잡음성분제거를 위해 형태학적필터와 Labeling을 적용하고 피부색블록의 방향성과 평탄도를 고려하여 검출하였다. 제안 알고리즘은, 배경에 피부색과 유사한 객체가 있는 경우와 배경이 단순한 경우에 대 해 적응적으로 검출이 가능하도록 하였다 여러 인종에 대한 모의실험결과 제안 알고리즘이 약 94% 의 검출 성공률을 보였다.
고분자재료의 Cavitation Erosion 손상에 관한 연구
김기주,김동섭 ( Ki Ju Kim,Dong Sup Kim ) 한국화학공학회 1994 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.32 No.1
The cavitation erosion tests of polymeric materials were made by using a magnetostriction vibratory apparatus in pure water. The results were as following: (1) The erosion rate of polymeric materials depends on the test time and increases as the amplitude of the vibration is increased. (2) Alicyclic epoxy resin and orthophthalic unsaturated polyester resin shows brittle fracture caused by the formation and growth of cracks while polypropylene and polyetherether ketone(PEEK) shows ductile fracture caused by plastic deformation and tearing. (3) It is also noted that the erosion resistance of the brittle materials shows a good correlation with fracture toughness, and that of the ductile materials is also correlated well with the degree of crystallinity.
김기주 ( Ki Ju Kim ) 호남사학회(구-전남사학회) 2011 역사학연구 Vol.44 No.-
본고는 소록도 자혜의원이 설립된 과정, 운영의 실상, 의원의 확장과 그에 따른 주민의 투쟁에 대해서 살펴본 글이다. 조선총독부는 1916년 2월 전남 고흥군 금산면 소록도에 자혜의원을 세우기로 하여 소록도 서편에 약 30만평과 민가 10동을 매수하였다. 동년 7월 초대 원장으로 아리가와를 임명하면서 착공하여 다음해 1월 본관 외에 47동의 건물을 준공하였다. 정원을 100명으로 하여 1917년 4월부터 각도에서 보내온 환자를 수용하였다. 초창기 소록도 자혜의원은 환자에게 식민지 의료와 일본식 생활양식을 강제하고, 대외적으로 국가적 체면을 내세우기 위한 나환자 요양소의 성격으로 설치되었다. 1920년대 초에 하나이가 제2대 원장으로 부임하였다. 그는 재임 중 3회에 걸쳐 병원을 확장하였다. 동시에 네 번에 걸쳐 정원을 증원하였다. 환자의 진료는 병원에 수용된 입원 나환자와 외래환자를 별도로 취급하여 시행하였다. 입원환자의 하루 일과는 군대와 같이 통일적으로 움직였다. 경증환자에 대하여는 체력에 맞는 작업을 부과하여 심신의 전환과 정신적 위안을 도모하고 체력의 증진을 기대하였다. 수용 환자는 전라남북도와 경상남북도 출신이 각각 절반에 가까운 인원수 였으며 대부분이 농업에 종사한 사람들이었다. 어느 정도 치유되어 퇴원한 비율은 9%에 지나지 않았고 20% 정도는 사망 등 불의의 사태를 당하였다. 나머지 70%는 불안 속에서 장기간의 수용생활을 계속하는 처지였다. 전국의 나환자 수는 3만 명 내외로 추산되어 수용시설의 확충을 요구하는 사회의 여론에 따라 총독부는 1925년부터 병원 확장계획을 세웠다. 1926년 9월 부지매입에 관한 주민 설득에 대해 주민들은 생활 근거지의 상실을 이유로 거부하였다. 주민들은 반대 항의 시위를 하다가 제지하는 경찰과 충돌하였다. 당국은 시위 주동자들을 체포하여 재판에 회부하는 한편 주민들을 강압하여 부지 매입을 마무리하였다. 병원의 확장에 반대하는 주민들의 저항은 무위로 끝나고 총독부의 의도대로 남병사가 신축되었다. The purpose of this study is to examine the establishment process of Jahye Hospital in Sorok Island, the real state of its operation, the expansion of the hospital, and the residents` struggle according to such processes. The Japanese Government-general of Joseon decided to establish Jahye Hospital in Sorok Island, Geumsan-myeon, Goheung-gun, Jeonnam in accordance with Japanese Government-general Ordinance No. 7 in February, 1916. So, the Japanese Government-general purchased about 300,000 pyeong and 10 private houses in the western side of Sorok Island. In July, 1916, the Japanese Government-general appointed Arigawa as the first hospital director, and so started the construction work. Then, in January, 1917, the Japanese Government-general completed not only the main building but also 47 buildings. Jahye Hospital set up its seating capacity as 100 patients, and so began to accommodate the patients sent by each Province from April, 1917. In its early days, Jahye Hospital in Sorok Island forced its patients to take the colonial,medical services and the Japanese way of life, and was established as the character of a leper colony for saving national honor internationally. In the early 1920`s, Hanaiga was appointed as the second director. He expanded the hospital three times during his term of office. The work for extending and newly constructing the hospital was the urgent problem as leprous patients` hospitalization increased in those days. At the sametime, he increased the seating capacity of his hospital four times. The medical services were administered by treating inpatients and outpatients separately. Inpatients` daily schedule was operated uniformly like the military. On mild patients, the works appropriate to their physical strength were imposed and so the diversion of their mind and body and the promotion of their physical strength were expected. The patients from Jeolla-do (Jeonnam and Jeonbuk) and Gyeonsang-do (Gyeongnam and Gyeongbuk) accounted for half of the accommodated patients respectively. Most patients were engaged in agriculture. Only 9% of the accommodated patients were healed somewhat and discharged from the hospital. About 20% suffered the unexpected situation such as death. The remaining 70% continued their long-term accommodation life with anxiety. As the number of nationwide lepers was estimated to be about 30,000 persons, the Japanese Government-general planed to expand the hospital from 1925 according to the social public opinion for enlarging the accommodation facilities. However, although the residents were persuaded to sell the building sites, they refused to sell them on account of losing their life base. The residents demonstrated against the purchase of building sites and so collided with the police suppressing such demonstration. The authorities arrested the leaders of the demonstration and so brought them to trial on the one hand, and forced the residents to sell the building sites on the other hand. The residents` resistance against extending the hospital resulted in failure, whereas new hospital buildings were constructed newly just as the Japanese Government-general intended.