적응형 채도 향상 알고리즘을 이용한 컬러 영상 처리 기법

양경옥,윤종호,조화현,최명렬,Yang, Kyoung-Ok,Yun, Jong-Ho,Cho, Hwa-Hyun,Choi, Myung-Ryul 한국정보처리학회 2007 정보처리학회논문지B Vol.14 No.3

본 논문에서는 LCD 모니터, LCD TV, PDP TY, OLED TV 등과 같은 평판 디스플레이 장비를 위한 적응형 칼라 영상 향상 알고리즘에 대해서 제안한다. 제안한 알고리즘은 칼라 영상에서 콘트라스트와 채도를 함께 향상 시키는 방법이다. 콘트라스트 향상을 위해서 사용하는 적응형 선형 추정 CDF(Cumulative Density Function) 기법은 콘트라스트 향상 시 밝기에 따른 조정이 가능하여 원 영상의 왜곡을 막아준다. 적응형 채도 향상 알고리즘은 채도 향상의 문제점인 Contour Artifact와 Over-Saturation이 발생하지 않는 범위내에서 제도를 향상시킨다. 또한 원 영상의 색상 분포에 따른 선택적 채도 향상 방법을 사용하여 고품질의 영상을 얻을 수 있다. 제안된 알고리즘에 의한 처리 결과와 원 영상의 화질 평가를 위해서 시각적 검증과 히스토그램 편차를 도입하였다. In this paper, we propose an automatic extraction model for unknown translations and implement an unknown translation extraction system using the proposed model. The proposed model as a phrase-alignment model is incorporated with three models: a phrase-boundary model, a language model, and a translation model. Using the proposed model we implement the system for extracting unknown translations, which consists of three parts: construction of parallel corpora, alignment of Korean and English words, extraction of unknown translations. To evaluate the performance of the proposed system, we have established the reference corpus for extracting unknown translation, which comprises of 2,220 parallel sentences including about 1,500 unknown translations. Through several experiments, we have observed that the proposed model is very useful for extracting unknown translations. In the future, researches on objective evaluation and establishment of parallel corpora with good quality should be performed and studies on improving the performance of unknown translation extraction should be kept up.

적응형 채도 향상 알고리즘을 이용한 컬러 영상 처리 기법

양경옥,윤종호,조화현,최명렬 한국정보처리학회 2007 정보처리학회논문지. 소프트웨어 및 데이터 공학 Vol.14 No.3

In this paper, we propose an adaptive color enhancement algorithm for flat panel displays(FPDs) such as LCD monitor, LCD TV, PDP, OLED and so on. The proposed method is the algorithm of enhanced contrast and saturation in a color image. The two proposed algorithms are an adaptive linear approximation CDF(Cumulative Density Function) algorithm and an adaptive saturation enhancement algorithm. The one is the algorithm for contrast enhancement which protects the distortion of an original image to control the contrast as a result of lightness of input image. The other is the algorithm which improves the saturation without the contour artifact and over-saturation, whose problems are generated during the enhancing saturation. In addition, it allows to achieve the high quality image using the selective saturation enhancement method for a color distribution of original image. Visual test and standard deviation of their histograms have been applied in order to evaluate the resultant output images of the proposed algorithm and the original ones. 본 논문에서는 LCD 모니터, LCD TV, PDP TV, OLED TV 등과 같은 평판 디스플레이 장비를 위한 적응형 칼라 영상 향상 알고리즘에 대해서 제안한다. 제안한 알고리즘은 칼라 영상에서 콘트라스트와 채도를 함께 향상 시키는 방법이다. 콘트라스트 향상을 위해서사용하는 적응형 선형 추정 CDF(Cumulative Density Function) 기법은 콘트라스트 향상 시 밝기에 따른 조정이 가능하여 원 영상의 왜곡을 막아준다. 적응형 채도 향상 알고리즘은 채도 향상의 문제점인 Contour Artifact와 Over-Saturation이 발생하지 않는 범위내에서 채도를 향상시킨다. 또한 원 영상의 색상 분포에 따른 선택적 채도 향상 방법을 사용하여 고품질의 영상을 얻을 수 있다. 제안된 알고리즘에 의한 처리 결과와 원 영상의 화질 평가를 위해서 시각적 검증과 히스토그램 편차를 도입하였다.

청주시 거주자의 통근지역과 통근자 특성

정환영,양경옥 公州大學校 地域開發硏究所 1998 地域開發硏究論叢 Vol.6 No.1

채도 확장을 이용한 컬러 이미지 향상 기법

양경옥(Kyoung-Ok Yang),황정습(Jung-Sub Hwang),윤종호(Jong-Ho Yun),조화현(Hwa-Hyun Cho),최명렬(Myung-Ryul Choi) 대한전자공학회 2007 대한전자공학회 학술대회 Vol.2007 No.7

In this paper, we propose the color image enhancement method to improve the quality of color image without producing over-saturation and color contour artifacts. The proposed method has two manners, which one is the adaptive cumulative density function and the other is the luminance-based saturation extension. That is focused on a preference color processing in order to generate better image quality than the algorithms focused on a uniform one for human vision.

악기를 활용한 음악활동이 중도,중복장애아동의 자기표현 및 수업참여행동에 미치는 영향

양경옥 ( Gyeung Ok Yang ),김정연 ( Jeongyoun Kim ),김시원 ( Si Won Kim ) 한국예술교육학회 2015 예술교육연구 Vol.13 No.2

이 연구의 목적은 악기를 활용한 음악활동 중재가 중도, 중복장애의 자기표현 및 수업참여행동에 미치는 영향을 살펴보고자 하였다. 연구는 3명의 초등학교 시설파견 특수학급의 중도, 중복장애아동을 대상으로 대상자간 중다간헐기초선설계를 하였다. 기초선(5회기), 중재(24회기), 일반화(4회기)와 유지(5회기) 의 순으로 음악시간과 창의적 체험활동시간에 진행하였다. 중재는 20분 동안의 집단중재와 10분 동안의 개별중재를 약 3개월간 실시하였다. 전 회기에 걸쳐 아동의 행동을 비디오로 녹화한 후 녹화된 자료를 분석하였다. 연구 결과 각 아동마다 차이가 있기는 했으나, 세 명의 참여 아동 모두 자기표현행동 발생비율과 수업참여행동 발생비율에 있어서 경향선의 변화가 크지는 않았으나 소폭으로 증가하였으며, 이는 중재 이후 4주 후에도 비교적 잘 유지되었다. 일반화에서도 기초선보다 약간 향상된 결과를 보였다. 결과에 있어서 큰 향상이 나타나지 않은 이유는 연구 참여자가 중도, 중복아동이기 때문에 학습속도, 숙달 및 일반화의 어려움이 있었기 때문이라 유추할 수 있다. 그러나 연구의 전반적인 경향선을 살펴볼 때 악기를 활용한 음악활동이 중도, 중복장애아동의 자기표현 및 수업참여행동에 큰 폭의 영향은 미치지 못했으나 중도, 중복장애아동의 자기표현 및 수업참여행동에 긍정적인 영향을 준 것을 확인할 수 있다. The purpose of this study was to examine the effect of an music activity using musical instruments intervention on self expression and class participation of children with severe or multiple disabilities. In this study, we conducted multiple probe design across subjects with three children with severe or multiple disabilities who dispatched to the special class in an elementary school. The three children are not in trouble in sight and hearing, but have severe physical disability and communication disorder multiply. We carried out this study with baseline(5 sessions), intervention(24 sessions), generalization(4 sessions) and maintenance(5 sessions). And we had 20-minute group intervention and 10-minute individual intervention about 3 months. Recorded the behavior of the children during the entire session into a video and then analyzed the data. The results of the study were as follows; Although each child was different, all three children showed a small increase in the self expression occurrence rate and the class participation occurrence rate, though change of its trend line is not big, and it maintained well even 4 weeks after the intervention relatively. In generalization they also had a bit improved outcomes. The reason the results were not improved largely seemed to be because the research subjects were children with severe or multiple disabilities so there were some difficulties in learning speed, proficiency and generalization. Although the trend line did not change a lot, we found out that the music activity using musical instruments was of help to self expression and class participation of children with severe or multiple disabilities.

경직형 양지마비아의 기립시 하지근 활성화와 하지 관절각에 관한 연구

양경옥(Kyoung Ock Yang),오명화(Myung Hwa Oh),김정자(Jung Ja Kim) 한국재활심리학회 2009 재활심리연구 Vol.16 No.3

The purpose of this study is to provide the basic data for treatment of children with spastic diplegia, understnding the standing posture and early stage of walking through measuring their lower extremity muscle activity, the angle of pelvic tilt, and lower extremity joint angle in standing through comparative analysis with normal children. The subjects of this study were 16 children of 4-7 years with spastic diplegia and 16 normal children. The results were as follows : First, there was significant difference of the RMS value of standing in rectus femoris and medial hamstring between normal children and children with spastic diplegia(p<.05), but there was no significant difference of the comparison of bilateral symmetry in both groups(p>.05). Second, there was significant difference in the angles of pelvis tilt, knee joint, and ankle joint, and foot angle between normal children and children with spastic diplegia(p<.05). Third, for normal children, as the angle of pelvis tilt was being increased, the muscle contraction of gluteus maximus and rectus femoris became increased, and the angles of knee joint and ankle joint became increased. Also, as the angle of knee joint was increased, the muscle contraction of gluteus maximus and rectus femoris became increased, and as the angle of ankle joint was increased, the muscle contraction of gluteus maximus became increased.

히스토그램 평활화를 이용한 영상 복원 알고리즘 설계

양경옥(Kyoung-Ok Yang),윤종호(Jong-Ho Yoon),최명렬(Myung-Ryul Choi) 대한전자공학회 2006 대한전자공학회 학술대회 Vol.2006 No.11

Histogram Equalization(HE) is widely used for contrast enhancement. However, it tends to change the brightness of an dark image and the darkness of an bright image, not suitable for consumer electronic products. In this paper we proposed the algorithm of the image restoration using the improvement histogram equalization that makes the image more detailed brightness.

선호색 보정을 이용한 화질 향상 알고리즘

梁耿玉(Kyoung-Ok Yang),黃寶顯(Bo-Hyun Hwang),李承俊(Seung-Joon Lee),尹鍾浩(Jong-Ho Yun),崔明烈(Myung-Ryul Choi) 대한전기학회 2008 전기학회논문지 P Vol.57 No.1

In this paper. we propose an adaptive color enhancement algorithm. It is used for the flat panel displays (FPDs) such as LCD, PDP, and so on. The proposed algorithm consists of an adaptive linear approximation CDF(Cumulative Density Function) algorithm and an adaptive saturation enhancement algorithm. The one is for contrast enhancement which prevents an image from the distortion by luminance transient of an input image. The other is the algorithm which improves the saturation without the contour artifact and over-saturation, whose problems are generated during the enhancing saturation. In addition, it allows to achieve the high quality image using the saturation enhancement method for a preferred color of original image. Visual test and standard deviation of their histograms have been applied to evaluate the resultant output images of the proposed algorithm.

물리·작업치료사의 근거중심치료 인식도 차이

고형정,양경옥,오명화,김정자,Ko, Hyeong-Jeong,Yang, Kyeong-Ok,Oh, Myung-Hwa,Kim, Jeong-Ja 한국임상보건과학회 2017 한국임상보건과학회지 Vol.5 No.4

Purpose. This study compared the awareness of the evidence-based practice(EBP) in 100 physical and occupational therapists. Methods. A questionnaire on awareness was conducted to examine the attitude toward EBP, the educational experience of EBP, and the performance ability of EBP. A questionnaire consisted of items on the general characteristics, the attitude toward EBP, the educational experience of EBP, and the performance ability of EBP of the subjects. Data analysis was made by IBM SPSS Statistics Ver. 20. The EBP awareness was examined by the independent t-test. Results. For the attitude toward EBP, there was a statistically significant difference in the item of 'Therapists should judge whether they apply study results to individual patient. For the educational experience of EBP, there was no statistically significant difference in all items. For the performance ability of EBP, there was a statistically significant difference in the item about the ability to understand patient's desire for treatment and treatment preference and the item about the ability to determine appropriate treatment process in cooperation with patients. Conclusions. Both two groups showed very low results in the attitude toward EBP, the educational experience of EBP, and the performance ability of EBP. Therefore, it is necessary to enhance EBP education in undergraduate programs and the clinical field.

남녀노인에 따른 사회적 지지, 자기관리, 사회적 참여 차이

이경주(Lee, Kyeong-Joo),양경옥(Yang, Kyeong-Ok),김정자(Kim, Jeong-Ja),오명화(Oh, Myeong-Hwa) 대한고령친화산업학회 2021 대한고령친화산업학회지 Vol.13 No.1

연구목적 : 65세 이상 남녀 노인의 사회적 지지, 자기관리, 사회참여에 차이가 있는지 알아보고자 한다 연구방법 : 본 연구는 G 도시에 살고 있는 65세 이상의 남녀 노인 200명을 대상으로 사회적 지지, 자기관리, 사회적 참여에 관한 설문지를 통하여 이루어졌다. 총 200부의 설문응답 자료를 사용하였으며 자료 분석은 SPSS 프로그램을 이용하여 기술통계와 남녀 차이 검정을 위해 독립검정 t-test를 실시하였다. 연구결과 : 남녀노인에 따른 사회적 지지, 자기관리, 사회적 참여 정도가 모두 중간 이상의 수준을 보였다. 사회적 지지는 남녀 노인에 따라 유의미한 차이를 보였으며 여자가 남자보다 높게 나타났다. 하위영역에서도 정서적 지지가 남녀 모두 가장 높은 점수를 보였고 평가적 지지가 가장 낮게 나타났다. 자기관리와 사회적 참여는 남녀노인에 따라 통계적으로 유의한 차이를 보이지 않았다. 결론 : 이상의 결과를 통해 사회적 지지, 자기 관리, 사회적 참여는 노인의 성별에 따라 다르게 나타났으며 향후 노인 삶의 질 향상을 위한 프로그램을 적용할 때는 남녀의 차이를 고려해야 한다. Objective : This study aims to find out if there are differences in social support, self-care, and social participation according to the elderly. Methods : The subjects of this study were 200 men and women aged over 65 years who are living in G city. They were asked to answer a questionnaire on social support, self-care and social participation. A total of 200 copies of responses were used for this study. Reliability analysis was performed to see the consistency and stability of the measurement tools used in this study. Descriptive statistics were used for the general characteristics of the elderly, and an independent sample t-test was used to find the differences between the elderly. Results : The results ware that the degree of social support, self-care, and social participation according to the elderly men and women all scored above the middle level. Social support was significantly different among men and women, and women were higher than men. In the sub-area, emotional support showed the highest score for both men and women, and evaluation support showed the lowest. Self-management and social participation did not show statistically significant differences according to the elderly. Conclusion : To sum up the results above, social support, self-care and social participation vary depending on the gender of the elderly. Therefore, when applying a program to improve the quality of life of the elderly in the future, it is necessary to take into account the differences between men and women.