YUV컬러 공간변환에 의한 잡음환경의 차량번호판 영역추출

김재남,최태일,김병기,Kim Jae-Nam,Choi Tae-Il,Kim Byung-Ki 한국정보처리학회 2006 정보처리학회논문지D Vol.13 No.1

현재의 차량번호인식 시스템은 외부의 잡음환경 때문에 안정적인 추출이 쉽지 않은 실정이다. 본 논문에서는 YUV컬러 공간변환을 이용하여 잡음환경에서도 인식률과 안정성이 높은 차량번호판 영역추출 방법을 제안한다. 차량번호판 컬러에서 RGB컬러 모델이 처리 시간은 빠르나 잡음환경에서는 인식률이 저조하고 밝기 정보가 별도로 표시되는 인자가 없으므로, RGB형식보다 빛에 둔감하고 데이터 량이 적은 YUV컬러 공간의 U채널과 V채널을 단계별 또는 재조합하는 방법으로 차량번호판 영역을 추출하였다. 차량번호판 영역은 라벨링된 영상의 기하학적 특성인 크기와 위치로 추출하였다. 본 논문에서 제안한 알고리즘은 여러 가지 잡음환경에서도 육안으로 구분할 수 있는 차량번호판을 모두 추출할 수 있음을 검증하였다. The existing recognition system of license plates cannot get the satisfactory result in noise environments. The purpose of this paper is to propose an algorithm that can recognize the region of license plates accurately in a noise environment. The algorithm is formulated by reorganizing the U- and V-channels of YUV color space as YUV is insensitive to light and carries less data than RGB color information. The region of license plates has been extracted by the geometric characteristics, sizes, and places of labeling images. The proposed algorithm was found to improve the process of extracting the region of license plates in various noise environments.

다양한 조명하에서 웨이블렛 변환과 히스토그램 평활화를 이용한 개선된 물체인식

김재남,정병수,김병기,Kim Jae-Nam,Jung Byeong-Soo,Kim Byung-Ki 한국정보처리학회 2006 정보처리학회논문지D Vol.13 No.2

There are two problems associated with the existing principal component analysis, which is regarded as the most effective in object recognition technology. First, it brings about an increase in the volume of calculations in proportion to the square of image size. Second, it gives rise to a decrease in accuracy according to illumination changes. In order to solve these problems, this paper proposes wavelet transformation and histogram equalization. Wavelet transformation solves the first problem by using the images of low resolution. To solve the second problem the histogram equalization enlarges the contrast of images and widens the distribution of brightness values. The proposed technology improves recognition rate by minimizing the effect of illumination change. It also speeds up the processing and reduces its area by wavelet transformation. 주성분 분석(Principal component hnidvsis : PCA)은 물체 인식 기술에서 가장 효율적인 방법으로 인정되고 있으나 영상 크기의 제곱에 비례하여 계산량이 증가하고 조명의 변화에 따라 정확성이 떨어지는 문제점이 있다. 본 논문에서는 이러한 문제점을 해결하기 위해서 웨이블렛변환(Wavelet Transform)과 히스토그램 평활화(Histogram Equalization)를 사용하였다. 계산량이 증가하는 문제는 웨이블렛 변환으로 낮은 해상도의 영상을 사용하여 해결하였다. 조명의 변화에 따라 정확성이 떨어지는 문제는 히스토그램 평활화를 사용하여 영상의 대조를 크게 하고 휘도치의 분포를 펼침으로써 해결하였다. 제안한 기법으로 실험한 결과 조명변화에 영향을 최소화하여 인식률이 향상되고, 웨이블렛 변환으로 처리할 영역을 줄여 처리 시간이 크게 단축됨을 보여 주었다.

비효율적인 대처기능의 장애가 있는 가족

김재남,배정희,서혜옥,Kim, Jae-Nam,Bae, Jeong-Hui,Seo, Hye-Ok 한국가정간호학회 1993 가정간호학회지 Vol.1 No.-

This study was carried out to investigate agreement, content and demand for home nursing care of hospital inpatients in brain, spain and musculoskeletal diseases. The data was collected by interviewing with 242 patients who were hospitalized in university hospital on Taegu, from September 6,60 October 9, 1993. Of 242 patients, 66.1% agreed to home nursing care system and rate of agreement was highest between 30 years to 49 years of age as 40.4% in general characteristics. The rate of agreement according to type of diagnosis was highest inpatients with spinal diseases as 75.6% according to functional status was the highest in patients who had daily living activity freely as 69.4% according to prognosis in patients at terminal stage as 80.0% and the rate of agreement to home nursing care of patients who wanted early discharge was 73.9% The first-ranking reasons of agreement to home nursing care was asking for continuous relationship with doctor as 37.3% and there was statistically significant difference in reasons of agreement to home nursing care according to functional status of patients. The first-ranking reason of early discharge among patients who wanted early discharge(74.8%) was because of long time stay in hospital. Among 23 items of nursing activity that patient wanted, the first-ranking item was recovery promotion, prevention of complication, education and counseling for health as 76.4%, drug management was 2nd-ranking item as 62.1% and the third was regular checking of vital signs as 55.9%, The lowest item of demand for home nursing care was hospice care(3.9%) and airway keep(9.1%).

이동호스트를 위한 효율적인 멀티캐스트 라우팅 최적화

김재남(Jae-Nam Kim),김병기(Byung-Ki Kim) 한국정보과학회 2001 한국정보과학회 학술발표논문집 Vol.28 No.2Ⅲ

이동컴퓨팅 환경에서 호스트의 이동성으로 야기되는 멀티미디어 데이터전송 문제 해결에 관한 연구가 활발히 진행되고 있다. 멀티캐스트는 멀티미디어 데이터가 차지하는 많은 네트워크 트래픽을 수신자에게 효율적으로 분배함으로써 네트워크 트래픽을 줄일 수 있다. 그러나 이동 호스트를 대상으로 하는 멀티캐스트는 무선자원의 효율적 사용을 위해 셀 반경이 작아짐에 따라 빈번하게 그룹의 멤버와 위치를 변화시키기 때문에 라우팅 경로의 최적화, 투명성제공, 잦은 핸드오프로 인한 등록지연에 따른 서비스 단절과 패킷손실의 증가에 대한 명확한 대책이 제시되지 못하고 있다. 또한 멀티캐스트를 지원하지 않는 영역으로 이동했을 때의 데이터전송에 관한 문제점도 내포하고 있다. 본 논문에서는 이러한 문제의 해결방안으로 이동컴퓨팅환경에서 Hop Counter로 정의된 서비스 범위를 하나의 그룹이라 정의하고 그룹기반의 멀티캐스트 라우팅 방법을 제안한다. 제안 방법은 셀이 마이크로화됨에 따라 나타나는 Hop 증가에 따른 전송 오버로드와 터널링 문제를 해결하고, 광역 네트워크에서의 멀티캐스팅을 담당하는 에이전트의 부하를 감소시킴으로써 성능 향상을 기대할 수 있다. 또한 호스트가 이동한 FA가 멀티캐스트를 지원하지 않을 때 MA가 그룹의 특정 호스트로부터 보낸 데이터를 받기 위해서 주변에 인접해 있는 MA중 멀티캐스트를 지원하고 가장 작은 Hop을 갖은 MA를 터널의 대리자로 등록해 놓음으로써 멀티캐스팅이 지원되지 않는 환경에서의 멀티캐스팅이 이루어질 수 있다.

풍경화를 통해 재현된 서울경관의 근대성과 그 함의

김재남 ( Jae Nam Kim ) 서울대학교 지리교육과 2005 地理敎育論集 Vol.49 No.-

A Study on the Improvement of Education and Environment of Children of Multicultural Families

Jae-Nam Kim(김재남) 한국컴퓨터정보학회 2017 韓國컴퓨터情報學會論文誌 Vol.22 No.12

Recently, as the number of multicultural families and foreigners living in korea increase, the proportion of various types of families and middle-admitted youths is increasing. These youths are less educated than their domestic counterparts, and their conversation time with their family members is relatively weak. Therefore, there is a need for a specialized education system for education and socialization. Immigration background among middle-admitted adolescents, children arrived in korea regardless of their will, with socialization already in the country where they were born, it is a reality that various difficulties are experienced in the socialization of korea society about language, education, emotion and employment. For this reason, some of the migrant background youths are pointed out as a big problem of the multicultural society, which is 18% of the NEET(Not in Education, Employment or Training) classes, which are not educated and are not willing to find jobs or employment. Therefore, in this study, we identified the problems of middle-admitted children of multicultural families as the number of middle-admitted adolescents increased, and suggested the necessary ways for them to achieve rapid socialization and settlement in korea society. For this purpose, we analyzed the problem of education of middle-admitted children as a discriminative approach which is different from general support method for middle-admitted children presented in previous reaearch, since then, we have presented an alternative to carry out realistic, systematic and successful education considering the characteristics of the region centered on the middle-admitted youths of Gwangju city.

SIMS 분석조건이 Bismuth Titanate 박막의 깊이 방향 조성 해석에 미치는 영향

김재남(Jae Nam Kim),이상업(Sang Up Lee),권혁대(Hyug Dae Kwun),신광수(Kwang Soo Shin),전웅(Uong Chon),박병옥(Byung Ok Park),조상희(Sang Hi Cho) 한국분석과학회 2001 분석과학 Vol.14 No.6

The Effect of Archery Experiential Learning Program on Children "s Communication and Peer Relationship

Jae-Nam Kim(김재남) 한국컴퓨터정보학회 2018 韓國컴퓨터情報學會論文誌 Vol.23 No.11

In modern society, the optimal physical environment is constantly changing due to IT development, and it is provided with convenience. In this age environment, the children are growing up thinking that the value of community consciousness through relationship with others is not important in the social reality in which various ways and environments that can be done by themselves are succeeding. No matter how rapidly the world changes, a diverse learning environment is needed that establishes desirable human relationships and recognizes community consciousness and values. The purpose of this study was to investigate the effects of general children(elementary school 4th, 5th, and 6th graders) on the communication and peer relationship of the children participating in the archery experiential learning program, to emphasize the importance of physical activity programs, and also by analyzing the relationship between communication and improvement of peer relationship and to understand the effect of the archery experiential training learning which is one of exercise program. In order to verify the research problems, 30 experimental group and 30 comparative group were composed of 4th, 5th, and 6th grade elementary schools in Gwangsan-gu, Gwangju metropolitan city. The experiment group was participated in the archery experiential learning program for a total of 10 sessions, once a week for 60 minutes, and conducted a questionnaire survey. In this study, we examined the effect of archery experiential learning program on improving children "s communication and peer relationship ability. Thus, it showed that archery experiential learning program can be one of the important educational methods to promote the healthy character and development of children.

논문 : John K. Wright(1891~1969)의 지리적 상상력과 미학적 지관념론

김재남 ( Jae Nam Kim ) 서울대학교 지리교육과 2002 地理敎育論集 Vol.46 No.-

Reexamination of the Cyber Insult Crime For securing the Internet Ethics

김재남(Jae-Nam Kim),박종렬(Jong-Ryeol Park) 한국컴퓨터정보학회 2013 韓國컴퓨터情報學會論文誌 Vol.18 No.6

최근 사이버공간에서의 댓글 등에 있어서 사실의 적시 없이 오로지 욕설과 비방만의 목적으로 하는 글들이 마치 유행처럼 난무하여 그에 따른 피해가 급격하게 확산되는 현상에 대하여 사회적으로 우려의 목소리가 높아지고 있다. 한편 사이버공간에서 행해지는 모욕행위로 인하여 인격권의 침해결과가 회복하기 어려운 상태에 이르는 경우가 많고, 특정인 익명과 펌행위 등으로 가해자가 누구인지 특정하기가 어려워 범죄피해에 대한 신고나 고소가 어려운 특징을 지니고 있으므로 형법상 모욕죄로는 대처하기가 어려운 것이 현실이다. 또한 불충분한 영역이 많아 별도로 사이버모욕죄를 신설하여 무분별한 모욕행위에 대하여 그 처벌을 강화하고, 형법상 친고죄로 규정되어 있는 부분을 완화해야 한다는 것이다. 그러나 현행 형법상으로도 처벌이 충분하므로 새로운 특별형법을 신설하는 것은 타당하지 않다. 그러므로 사이버모욕죄 또한 형법 제311조의 모욕죄에서 규율하는 것이 바람직하다. Recently, in the cyberspace, the posts that have only insults and abuses without the fact are getting spread rapidly as a trend, it makes the damage to people also, and the social concerns have been raised about its phenomenon. Meanwhile, because of the insulting actions that performed in cyberspace, the results of infringement of personal rights conditions getting difficult to repair. Also, it is difficult to find who the person who acts as a perpetrator is. So, it is hard to report a crime or sued for damages, also, it is really difficult to deal with a criminal contempt. Also, cause of a lot of deficient areas, the Cyber Insult Crime act is need and strengthened penalties or Mitigation about the crime subject to victim's complaint are need. However, give the criminal penalties to criminal is sufficient. So, to construct a new special criminal law, it is not advisable. Thus, governed by the Criminal Code Section 311 is preferably.