외형특징 추출 기능을 개선한 딥러닝 기반의 다중객체 추적

최효민,서기성 대한전기학회 2023 전기학회논문지 Vol.72 No.6

Multi-Object Tracking (MOT) aims to track the trajectories of multiple objects simultaneously in a video over time. In MOT, object detection is used to locate instances of objects in images or videos, and re-identification is employed to match objects with the same ID. Among recent MOT methods, one-shot MOT, which relies on a single neck and head for object detection and appearance feature extraction, faces a conflict between object category classification and unique ID classification. To address this challenge, we propose a solution that integrates an FPN neck-based appearance feature extraction module into YOLOX. This method effectively mitigates the conflict between object category classification and unique ID classification in one-shot MOT. Furthermore, the proposed variable offset mechanism enables correction of the extraction position, even in cases of object occlusion.. The proposed technique achieved 83.7% mIDF1 and 75% mMOTA in the experimental results for the TITAN dataset. This improved mIDF1 and mMOTA by 0.2% and 0.2% respectively over the IOU-based MOT, and by 1.2% and 0.7% respectively over the one-shot MOT.

예술기호론으로 본 분석미학의 회복가능성

최효민 한국외국어대학 1997 外大哲學 Vol.5 No.1

칼슘코팅봉지 처리에 따른 거봉 포도의 열과 발생과 과피의 구조적 강도 변화

최효민(Hyo-Min Choi),임영신(Young-Sin Im),김혜진(Hye-Jin Kim),손인창(In-Chang Son),신현석(Hyun-Suk Shin),김대일(Daeil Kim) 한국원예학회 2009 한국원예학회 학술발표요지 Vol.2009 No.10

칼슘 코팅 봉지 괘대 기간이 ‘거봉’ 포도 과피구조와 열과경감에 미치는 영향

최효민(Hyo-Min Choi),박준형(Jun-Hyung Park),손인창(In-Chang Son),김대일(Daeil Kim) 한국원예학회 2010 한국원예학회 학술발표요지 Vol.2010 No.5

시공간의 ‘켜’와 ‘결’을 찾는 유희(자)들

최효민(Hyo-min CHOI) 한국외국어대학교 철학문화연구소 2012 철학과 문화 Vol.25 No.-

본고에서는 시공간의 문화적 맥락과 무늬, 즉‘켜’와‘결’을 살려내고 상호작용적 속성을 가지며 거대한 사회 속에서 새로운 관계를 만들고 새로운 미적 체험으로 치유와 재생의 의미를 회복시키는 현대 실험 예술축제의 흐름과 예술 현장의 변화를 관찰하고 있다. 그리고 그것을 통해 90년대 이후 현대 예술 환경을 대표하는 이론적 모델 중 하나로, 니콜라 부리오(Nicolas Bourriaud)의 동명의 저서에서 차용된 개념인‘관계의 미학’의 맥락에서 유추해내었다. 이러한 미학에 바탕을 둔 예술은‘관객’을 유동적‘참여자’로 전환시키고 그들은 그 장을 제공하는 예술가들과 함께 동등한 시공간을 통해 공동의 의미를 생성하는‘새로운 놀이’에 들어서게 된다. 장소-특정적 퍼포먼스 혹은 지속적인 과정의 형태로 진행되는 이러한 예술은‘참여’와‘전이성’을 특징으로 한다. 만남, 초대, 공동의 협력 등을 발생시키면서 예술이 사회적으로 갖는 교환의 가치와 효력을 긍정하면서 존재 방식과 행동의 모델을 구성하고 새로운 인간관계를 지시한다. 따라서 관계미학은 곳곳에 여러 형태로 공동의 의미를 생성해내는 ‘예술(가)’들이 거주 할 수 있는 가능성과 의지를 드러낸다. 이 맥락과 관련하여 본고에서는 오스트리아의 린츠에서 열리고 있는 실험적인 미디어 아트 축제 <아르스 일렉트로니카>의 태동과, 관객 참여 프로젝트의 사례 및 근간의 주제와 흐름을 살펴보면서 이 축제의 관찰을 통해 확장적 의미에서의 관계미학의 속성을 포착하고 있다. 이어서 부리오의‘관계미학’과‘관계미술’의 생성과 이론적 배경을 고찰하고 그에 대한 반론과 비판을 소개한 후, 부리오가 이후의 저서를 통해 펼친 관계미학의 재해석을 담았다. 필자는 이에 근거하여 관계미학의 효용성에 대해 반추하면서 시공간의 맥락에 몸이 기입하는 방식을 통해 경험을 생성해내는 것을 관계미학의 확장적 성격으로 파악하고 있다. 이어서 곤잘레스-토레스의 설치미술, 마사키 후지하타의 장소-특정적 퍼포먼스, 독일의 실험적 미술축제 <카셀 도쿠멘타>의 사례를 통해 현대예술의 상생적 대안 모델을 반추해 내었다. 결론적으로 이 글은 다원화된 사회에서 몸(들)이 만나는 새로운 관계를 형성하는 확장형 커뮤니티로서의 예술과 예술축제의 가능성을 전망하고 그것이 평등과‘상생의 연희’를 추구할 수 있다고 본다. 그리고 이로써 여러 문화적 배경, 즉‘켜’와‘결’을 자유롭게‘번안하며’체험을 만들어 내는 유희(자)들로서의 예술의 탄생을 예고하며 이러한 예술 환경의 변화를 통해 동등한 연대와 교류, 치유와 재생을 추구하는 발전된 문화적 글로컬리제이션이 실현될 수 있음을 전망하고 있다. This paper observes that a flow of experimental art festivals of contemporary and change in the art field create a new relationship in vast society, making use of spatio-temporal cultural context and having an interactive property, and revive a meaning of healing and revival through new aesthetic experience. Through which, as one of the theoretical models representing contemporary art environments since the 1990s, it is analogized from a context of ‘Relational Aesthetics’, a concept derived from a book whose title is the same as Bourriaud's. The art based on this aesthetics converts ‘audience’ into fluid ‘participant’, and starts ‘a new play’ that creates a common meaning through equal temporal space with artists who offer the chapter. As a form of site-specific performance or consistent process, the art is characterized as ‘participation’ and ‘transition’. It affirms the exchange value and its efficacy that belongs to the arts in society by causing meeting, invitation, and cooperation, forms existence methods and behavior models, and directs a new human relationship. Therefore, in relational aesthetics, a possibility and the will are revealed by situating arts/artists that create a common meaning in various forms. In reference to this context, the article grasps a property of relational aesthetics in an extensive meaning by observing an experimental media art festival entitled <Ars Electronica> that takes place in Linz, Austria, while examining the naissance of the festival, cases of participant participating project, and the basis of themes and flows. Further, it considers creation and theoretical background of Bourriaud’s Relational Aesthetics and Relational Art, introducing counterargument and criticism against them, and contains reinterpretation of relational aesthetics extended through Bourriaud's later books. Based on this, the author identify relational aesthetics' extensive characteristics as creation of experience by ruminating the utility of relational aesthetics and putting body into spatio-temporal context. Further, through the cases of F. González-Torres's installation art, M. Fujihata's site-specific performance, and an experimental art festival entitled <Kassel Documenta> in Germany, ruminated was a cooperative alternative model of contemporary art. In conclusion, the article prospects a possibility of art and art festival as an extensive community that forms a new relationship where human body meet in multi-cultural society, and pursues equality and ‘conviviality’. Hereby, announced is a birth of the art-players who adapt various cultural backgrounds where a ‘kyeo’ and ‘gyeol’ (spatio-temporal layers, in Korean) are freely ‘adapted’, and create experience, and through change in this cultural background, realization of improved cultural glocalization is prospected in that it pursues equal solidarity, exchange, healing and regeneration.

또 다른 화자: 샹탈 아케르만(Chantal Akerman)의 시공간과 영화 미학 -영화 <갇힌 여인>( La captive) 분석을 중심으로-

최효민 ( Hyo Min Choi ) 한양대학교 현대영화연구소 2011 현대영화연구 Vol.7 No.1

Generic structure of Chantal Akerman`s film appears to be even innovative due to its autistic tendency. Flow of time that is exposed raw in a limited space and the plot without conventional restraint show her sincere contemplation for fundamental aesthetics. It provides audiences with the vacancy which creates a deep passage for their unconsciousness and anti-realism. In many Akerman`s films space is superficially closed, but her unique technique of revealing something hidden by showing everyday life is mesmerizing. In other word, she forms another ``intimate distance`` by keeping distance (with consciousness of audiences). This report examines the time and space of <La Captive>(2000), which is based on the 5th volume of Marcel Proust`s La recherche du temps perdu. While characters` behaviour captured in a camera is a means to study the equally given space, and cinematic sound refined with continuous time are building semantic network of non-linguistic narrator as another narrator. The first impression of <La Captive> is that it has a minimal and objective view towards the complicated Proust novel, allowing genuine reconstitution. However, focusing on the restricted space and time, it is destroyed by instantly created non-linguistic narrator including presence and absence of characters. The film lets its audience encounter the fundamental contemplation when they face with the ``empty time-space``. Her cinematic aesthetics is still on the line of ``experiment`` that has no boundary for existence of time and space. ``Another narrator`` is metaphorically time-space itself in Akerman`s film.

괘대봉지의 칼슘 코팅농도가 ‘거봉’포도의 과피구조와 열과에 미치는 영향

최효민(Hyo-Min Choi),손인창(In-Chang Son),김대일(Daeil Kim) 한국원예학회 2010 원예과학기술지 Vol.28 No.4

칼슘 코팅 봉지의 괘대처리가 포도 ‘거봉’의 과피 강화 및 열과 경감에 미치는 영향을 구명하고 효과적인 열과 방지용 괘대봉지 개발에 필요한 기초자료를 얻기 위해 실험을 수행하였다. 무대구의 가용성당함량과 안토시아닌 함량은 각각 18.1°Brix, 2.56㎍?㎝?²로 칼슘코팅 괘대구에 비해 높았다. 과피의 경도는 무대구에서 1.18㎏?5㎜?¹Ø으로 괘대처리구의 12.3, 1.24, 1.27, 1.35㎏?5㎜?¹Ø 보다 낮았으며 고농도의 칼슘코팅 봉지를 사용할수록 경도가 증가하는 경향을 확인할 수 있었다. 과피의 형태적 관찰을 수행한 결과, 고농도의 칼슘코팅 괘대구일수록 표피 및 아표피층의 세포벽 두께가 증가하여 과피가 구조적으로 강화되었으며, 한계팽압 하에서의 열과 발생률은 고농도의 칼슘코팅한 봉지를 처리할수록 열과 발생이 감소하여 열과 경감에 효과적임을 알 수 있었다. 하지만 처리구 중 열과 경감에 가장 효과적이었던 9% 칼슘 코팅 괘대구에서는 칼슘에 의한 과피 미려도저하가 문제되었다. 따라서 열과 경감효과와 과실의 상품성을 고려했을 때 ‘거봉’ 포도의 경우에는 6%의 칼슘코팅 봉지 처리가 바람직한 것으로 나타났다. The effects of calcium concentrations of coating bag treatment to reduce berry cracking were investigated through the changes of pericarp structure and berry cracking rate in ‘Kyoho’ grape. The soluble solids and anthocyanin contents in harvested grapes were highest at 18.1 °Brix and 2.56 ㎍?㎝?² in non bagging group compared with those of calcium coating bag treatments. The firmness of pericarp was lowest in non bagging group (1.18 ㎏?5 ㎜?¹Ø) compared with bagging treatments (1.23, 1.24, 1.27, 1.35 ㎏?5 ㎜?¹Ø) which increased effectively in proportion to calcium concentration. As a result of histological observation of the fruit skin, the bagging with higher calcium concentration developed thicker epidermal and sub-epidermal layer of cell wall than that of non bagging. Moreover, the strengthened berry skin of calcium treatments effectively decreased berry cracking rate under critical turgor pressure. However, the 9% calcium coating bag treatment which was the most effective for cracking reduction seriously decreased marketability of harvested grape with white color staining on berry skin caused by eluted calcium from the coated paper bag. Based on our results, we recommend that 6% calcium coating bag be available for berry cracking reduction and higher quality production.

외형특징 추출 기능을 개선한 딥러닝 기반의 다중객체 추적

최효민(Hyomin Choi),서기성(Kisung Seo) 대한전기학회 2023 전기학회논문지 Vol.72 No.6

Multi-Object Tracking (MOT) aims to track the trajectories of multiple objects simultaneously in a video over time. In MOT, object detection is used to locate instances of objects in images or videos, and re-identification is employed to match objects with the same ID. Among recent MOT methods, one-shot MOT, which relies on a single neck and head for object detection and appearance feature extraction, faces a conflict between object category classification and unique ID classification. To address this challenge, we propose a solution that integrates an FPN neck-based appearance feature extraction module into YOLOX. This method effectively mitigates the conflict between object category classification and unique ID classification in one-shot MOT. Furthermore, the proposed variable offset mechanism enables correction of the extraction position, even in cases of object occlusion. The proposed technique achieved 83.7% mIDF1 and 75% mMOTA in the experimental results for the TITAN dataset. This improved mIDF1 and mMOTA by 0.2% and 0.2% respectively over the IOU-based MOT, and by 1.2% and 0.7% respectively over the one-shot MOT.

스케일러블 비디오 부호화를 위한 효율적인 엔트로피 부호화 방법

최효민(Hyo Min Choi),남정학(Jung Hak Nam),심동규(Dong Gyu Sim),최병두(Byeong Doo Choi),조대성(Dae Sung Cho) 한국방송·미디어공학회 2010 방송공학회논문지 Vol.15 No.5

GAN을 사용한 재구성 오차 기반의 이상감지

최효민(Hyomin Choi),서기성(Kisung Seo) 대한전기학회 2021 전기학회논문지 Vol.70 No.4

Anomaly detection is a technique used to identify unusual patterns that do not conform to expected behavior such as defects or unusual situations. Various generative adversarial network (GAN) and autoencoder based methods have been suggested and shown much progress in this field. ABC[5], an existing representative supervised anomalies detection method, generates blur images for normal data, and the distribution of reconstruction errors for normal and abnormal overlaps considerably. In order to solve these problems, we proposed an improved anomaly detection method using autoencoder and GAN. The proposed method combine various loss functions of both supervised and unsupervised anomaly detection utilizing both normal and abnormal training data. We demonstrate the proposed GAN based anomaly detection by performing experiments on Fashion-MNIST, and real-world industrial dataset – metal surface defects. Compared to ABC[5], our model is superior to the previous approach in terms of average area under the ROC curve (AUROC) and distribution of the reconstruction errors for normal and anomaly data.