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차성원,신재호 (사)디지털산업정보학회 2008 디지털산업정보학회논문지 Vol.4 No.1
Blocking artefact noise is nesessarily happened in compressed images using block-coded algorithms such as JPEC compressing algorithm. This noise is more recognizable especially in highly compressed images. In this paper, an algorithm is presented for reduction of blocking artefact noise using block division. Furthermore, we also mention about the median filter which is often used in image processing.
차성원,신재호 (사)디지털산업정보학회 2008 디지털산업정보학회논문지 Vol.4 No.2
The impulse noise is very common and typical noise in the digital image. Many methods invented in order to remove the impulse noise since the development of Digital Image Processing. For example, the median filter has been used for removing the impulse noise. In this paper, we try to remove the impulse noise using wavelet transformation in the wavelet-transformed detail areas. We also compare the algotirhm with median filter with the visual and numerical methods. The result using the algorithm in this paper was much better than the median filter in both removing the noise and keeping the edges. The proposed algorithm needs more calculating time but has more advantages than the median filter has.
차성원(Seong Won Cha),신재호(Jae Ho Shin) 한국컴퓨터정보학회 2008 韓國컴퓨터情報學會論文誌 Vol.13 No.2
JPEG 압축 영상과 같은 영상을 분할하여 압축을 하는 압축 알고리즘에서는 블록킹 아티팩트 잡음은 필수적으로 발생한다. 이런 잡음은 특히 압축률이 높을수록 더욱 눈에 뛰게 된다. 본 논문에서는 웨이브렛을 사용하여 블로킹 아티팩트 잡음을 감소하는 알고리즘을 제시한다. 그리고 영상 처리에 자주 사용되는 중간값 필터에 대해서도 언급하였다. 본 논문의 알고리즘을 중간값 필터와 비교한 결과 본 논문의 알고리즘이 중간값 필터보다 시각적 및 수치적 평가 모두 훨씬 월등한 결과를 얻었다. Blocking artefact noise is necessarily happened in compressed images using block-coded algorithms such as JPEC compressing algorithm. This noise is more recognizable especially in highly compressed images. In this paper, an algorithm is presented for reduction of blocking artefact noise using wavelet. Furthermore, we also mention about the median filter which is often used in image processing. Moreover, we compared the algorithm in this paper with the median filter, and its result was much better than the median filter both visually and numerically.
Re-interpretation of traditional Asian medicine with constitutional perspective
팜둑두옹,차성원,김종열 한국한의학연구원 2013 Integrative Medicine Research Vol.2 No.1
There has been a rapid increase in tailored medicine that emphasizes the complex inter-individual interactions, and this increase has paralleled recent significant achievements in genomics and Systems Biology. However, attempts to create a virtual human have been limited to low-levels of organization, such as gene-protein networks, due to the lack of systematic concepts at the higher levels of organisms (organ, individual, and environment). Constitutional perspective of various forms of traditional Asian medicine through the ancient, middle, and modern eras, particularly the holistic approach of Sasang constitutional medicine (SCM), may provide a novel framework for creating tailored medicine. This article aims to review the theoretical development of traditional Chinese medicine and the initiation of SCM in addition to summarizing current evidence on the genetic basis, bio-physiological features, and risk of disease of different SCM phenotypes. We also suggest that the patho-physiological principle and scientific evidence underlying SCM, particularly for the TaeEum type, can be effective in dealing with obesity-linked disease, which is a predominant disease in today's society.
정선구,차성원,이서영,박정현,이시우 한국한의학연구원 2017 Integrative Medicine Research Vol.6 No.4
Everything in the surrounding universe can be attributed into five elements. Human organs can be also linked to the five elements. Cells, the smallest unit of the human body, consist of cellular organelles as little organs. Here, we extended the concept of the five elements to a cellular level via the human organs, theoretically re-evaluating the overall association of cellular organelles in maintaining the homeostasis of cellular functions.
제주 해녀의 한증과 인체측량, 생체전기임피던스 지표 및 삶의 질과의 연관성 분석
이은영,김수정,이시우,차성원,이영섭,문수정,Lee, Eunyoung,Kim, Sujung,Lee, Siwoo,Cha, Seongwon,Lee, Youngseop,Mun, Sujeong 대한예방한의학회 2016 대한예방한의학회지 Vol.20 No.3
Objectives : The purpose of this study was to analyze the relationship between the Cold-pattern and the quantitative index through the results of an anthropometric method and Bio Impedance Analysis (BIA) of the Haenyeo living in Jeju island. Furthermore, we will examine the effect of Cold-pattern on the quality of life. Methods : BIA indices were acquired directly from Inbody770 and questionnaires were collected by Gallup Korea professional surveyor through face to face interviews. Binary regression analysis and linear regression analysis were used to examine the association between collected data. Results : Total of 175 of people were participated in this study. First, we examined the difference of the indicators in the Cold-pattern group and the non-Cold pattern group by the average comparison of the anthropometry and BIA indices. Most of the non-Cold pattern group showed high quality of life, BIA and anthropometry. In the relationship between Cold-pattern and anthropometry and BIA indices, BMI and PA indices were found to affect the Cold-pattern on a group basis. As the BMI increased by $1kg/m^2$, probability of not being non-Cold pattern was 1.13 times. and as the PA increased by $1^{\circ}$, probability of not being non-Cold pattern was 2.4 times. In the case of EQ5D value, the quality of life of ${\beta}$ was increased by 0.08 in non-Cold pattern (p <.05), EQ5D VAS of ${\beta}$ was also increased by 10.05 (p <.05). Conclusions : This study showed that BMI and PA could be used as a clinical index to evaluate the Cold-pattern as a clinical indicator, and there is a difference in quality of life according to Cold-pattern.