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이재도,박준호,전대성,윤영우,김상곤,Lee, Jae-Do,Park, Jun-Ho,Jeon, Dae-Seong,Yun, Yeong-U,Kim, Sang-Gon 한국정보처리학회 2000 정보처리논문지 Vol.7 No.5
For the object-based video compression at very low bit rate, vieo segmentation is an essential part. In this paper, we propose a temporal video segmentation algorithms for motion pictures which is based on blocks. The algorithm is composed of three steps: (1) the change-detection, (2) the block merging, and (3) the block segmentation. The first step separates the change-detected region from background. Here, a new method for removing the uncovered region without motion estimation is presented. The second step, which is further divided into three substeps, estimates motions for the change-detected region and merges blocks with similar motions. The merging conditions for each substep as criteria are also given. The final step, the block segmentation, segments the boundary block that is excluded from the second step on a pixel basis. After describing our algorithm in detail, several experimental results along the processing order are shown step by step. The results demonstrate that the proposed algorithm removes the uncovered region effectively and produced objects that are segmented well.
이재도,양승복,정수웅 대구보건대학 1994 대구보건대학 論文集 Vol.14 No.-
In this paper, Using a Fuzzy theory an On-Line phoneme recognition procedure of Korean characters is studied. The recognition method is performed by reading the pixel coordinates, finding the feature points, recognizing the stroke, recognizing the phoneme in order. In the course of recognizing the stroke, first the feature points of an inputed stroke is characterized by starting point, end point, and bending point. and then, based on 0, 5, 6, 7, 8, 9, and 10 stroke code among the recognized stroke the distance or direction between base stroke and the next input stroke is used for recognizing the phoneme
이재도 ( Jae-do Lee ) 한국고등직업교육학회 2010 한국고등직업교육학회논문집 Vol.11 No.4
This research was conducted targeting 606 D College students to identify whether they have experience writing reply on the Internet to examine the types of Internet reply drafted motivation for drafting the reply, and whether they have experience drafting negative (malicious) reply. Moreover, this research examines the correlation between offensiveness and impulsiveness of the students who have or do not experience drafting malicious reply. As for the motivation for drafting the reply, male College students cited ‘no need to disclose the real name’ and 'drafting mitigates stress' while female College students cited ‘it is fun’ and ‘due to the personal emotion.’ reply of the students who have experience drafting reply, number of viable reply outweighed malicious reply. Male College students tended to draft more malicious repls compared to the female College students. There were more students who had experience drafting malicious reply at PC cafes or other places compared to their homes or public places. The students who cited ‘no need to disclose the real name’, ‘it is fun\ ‘due to the personal emotion’,‘due to the sense of heroism’ and ‘drafting mitigates stress” tended to have experienced drafting malicious reply more than other students. Offensiveness and impulsiveness of the students who had experience drafting malicious reply tended to be severe compared to the students who do not have such experience.
이재도 ( Jae-do Lee ),박명환 ( Myeong-hwan Park ) 한국고등직업교육학회 2009 한국고등직업교육학회논문집 Vol.10 No.1
This research targeted 940 students of the D-College as of 2008 to analyze individuals’ confidence in the selection of their major, question of career decision making as of the present, and obstacles for the career decision making by different variables. College students’ confidence on the selection of their major manifested significant difference depending on the gender, experience of whether they took additional year to take the College entrance exam again, question of career decision making and type of major. As for the verification on the level of confidence in career decision making, difference exists depending on the gender, question of career decision making, grade, age, hometown and type of major. When the College students’ confidence on the selection of their major increases, level of non-decision on their career decreases, and when the total level of obstacles for career decision makings high, perception of the non-decision on their career increases as well. Among the sub variables of the obstacles for career decision making, factors such as ‘lack of self assurance’, ‘sense of physical inferiority’, ‘difficulty in interpersonal relations’, ‘relationship with other important people’, ‘lack of information on occupation’ and ‘lack of interest’ affect non-decision on the career. Among the variables that influence, obstacles for career decision making that correspond to the ‘lack of self assurance’ is the highest in terms of influence, followed by the ‘lack of interest’ and ‘lack of information on occupation’.
주파수 변동시 불평형 전압에 강인한 DSC-PLL 설계 연구
이재도(Jae Do Lee),차한주(Han Ju Cha) 대한전기학회 2018 전기학회논문지 Vol.67 No.11
In this paper, the design of robust DSC-PLL(Delayed Signal Cancellation Phase Locked Loop) is proposed for coping with frequency variation. This method shows significant performance for detection of fundamental positive sequence component voltage when the grid voltage is polluted by grid unbalance and frequency variation. The feedback frequency estimation of DSC-PLL is tracking the drift in the phase by unbalance and frequency variation. The robust DSC PLL is to present the analysis on method and performance under frequency variations. These compensation algorithms can correct for discrepancies of changing the frequency within maximum 193[ms] and improve traditional DSC-PLL. Linear interpolation method is adopted to reduce the discretized errors in the digital implementation of the PLL. For verification of robust characteristic, PLL methods are implemented on FPGA with a discrete fixed point based. The proposed method is validated by both Matlab/Simulink and experimental results based on FPGA(XC7Z030).
이재도(Jae Do Lee),박준호(Joon Ho Park),전대성(Dae Seong Jeoune),윤영우(Young Woo Yoon),김상곤(Sang Gon Kim) 한국정보처리학회 2000 정보처리학회논문지 Vol.7 No.5
For the object-based video compression at very low bit rate, video segmentation is an essential part. In this paper, we propose a temporal video segmentation algorithm for motion pictures which is based on blocks. The algorithm is composed of three steps(1) the change-detection, (2) the block merging, and (3) the block segmentation. The first step separates the change-detected region from background. Here, a new method for removing the uncovered region without motion estimation is presented. The second step, which is further divided into three substeps, estimates motions for the change-detected region and merges blocks with similar motions. The merging conditions for each substep as criteria are also given. The final step, the block segmentation, segments the boundary block that is excluded from the second step on a pixel basis. After describing our algorithm in detail, several experimental results along the processing order are shown step by step. The results demonstrate that the proposed algorithm removes the uncovered region effectively and produces objects that are segmented well.
이재임(Jae Im Lee),이인규(In Kyu Lee),이윤석(Yoon Suk Lee),이도상(Do Sang Lee),장석균(Suk Kyun Chang),원종만(Jong Man Won) 대한외과학회 2007 Annals of Surgical Treatment and Research(ASRT) Vol.72 No.4
Acute necrotizing pancreatitis is a disease with high morbidity and mortality despite the progress made in intensive care. Gas gangrene of the pancreas, usually caused by anaerobe infection, is an extremely rare, but severe form of acute necrotizing pancreatitis. Several severity-of-illness classifications for acute pancreatitis are used to identify patients at risk for complications. Pancreatic necrosis is diagnosed radiographically by dynamic intravenous contrast-enhanced computed tomography (CT) of the abdomen. Early CT in patients with suspected necrotizing pancreatitis contributes to early intervention and many advantageously enhance survival. We report here on two cases of necrotizing pancreatitis with gas gangrene in 49-year-old male patient and 86-year-old female patient.