• The KIPS Transactions:PartB
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• v.18B no.6
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• pp.365-374
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• 2011

Recently, malicious video classification and filtering techniques are of practical interest as ones can easily access to malicious multimedia contents through the Internet, IPTV, online social network, and etc. Considerable research efforts have been made to developing malicious video classification and filtering systems. However, the malicious video classification and filtering is not still being from mature in terms of reliable classification/filtering performance. In particular, the most of conventional approaches have been limited to using only the spatial features (such as a ratio of skin regions and bag of visual words) for the purpose of malicious image classification. Hence, previous approaches have been restricted to achieving acceptable classification and filtering performance. In order to overcome the aforementioned limitation, we propose new malicious video classification framework that takes advantage of using both the spatial and temporal features that are readily extracted from a sequence of video frames. In particular, we develop the effective temporal features based on the motion periodicity feature and temporal correlation. In addition, to exploit the best data fusion approach aiming to combine the spatial and temporal features, the representative data fusion approaches are applied to the proposed framework. To demonstrate the effectiveness of our method, we collect 200 sexual intercourse videos and 200 non-sexual intercourse videos. Experimental results show that the proposed method increases 3.75% (from 92.25% to 96%) for classification of sexual intercourse video in terms of accuracy. Further, based on our experimental results, feature-level fusion approach (for fusing spatial and temporal features) is found to achieve the best classification accuracy.

• Proceedings of the Korea Information Processing Society Conference
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• 2005.11a
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• pp.197-200
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• 2005

본 논문은 유해한 동영상을 실시간으로 분석하고 차단하기 위하여, 동영상의 비주얼 특징으로서 그룹 프레임(Group of Frame) 특징을 추출하여 SVM 학습모델을 활용하는 유해 동영상 분류에 관한 것이다. 지금까지 동영상 분류에 관한 연구는 주로 입력 동영상을 뉴스, 스포츠, 영화, 뮤직 비디오, 상업 비디오 등 사전에 정의한 몇 개의 장르에 자동으로 할당하는 기술이었다. 그러나 이러한 분류 기술은 미리 정의한 장르에 따른 일반적인 분류 모델을 사용하기 때문에 분류의 정확도가 높지 않다. 따라서, 유해 동영상을 실시간으로 자동 분류하기 위해서는, 신속하고 효과적인 동영상 내용분석에 적합한 유해 동영상 특화의 특징 추출과 분류 모델 연구가 필요하다. 본 논문에서는 유해 동영상에 대하여 신속하고, 정확한 분류를 위하여 유해 동영상의 대표 특징으로서 그룹프레임 특징을 정의하고, 이를 추출하여 SVM 학습 모델을 생성하고 분류에 활용하는 매우 높은 성능의 분석 방법을 제시하였다. 이는 최근 인터넷 뿐만 아니라 다양한 매체를 통하여 급속도로 번지고 있는 유해 동영상 차단 분야에 적극 활용될 수 있을 것으로 기대된다.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.23 no.6
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• pp.1001-1006
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• 2013

In this paper, Recently, we describe the distinction mechanism analysis and injurious distinction mechanism performance analysis in order to determine harmfulness of the injurious multimedia which is being rapidly spread in the smart phone and Intelligent Robots. Based on the injurious mechanism distinction technologies, We defined individual injurious characteristics elements of multimedia(images and videos). Also, We analyze harmfulness of the injurious multimedia content by the visual characteristics modeling.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.12 no.6
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• pp.2807-2814
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• 2011

This paper proposes an identification algorithm that detects detrimental digital video contents based on the color space features. In this paper, discrimination algorithm based on a 2-Dimensional Projection Maps is suggested to find targeted video images. First, 2-Dimensional Projection Maps which is extracting the color characteristics of the video images is applied to extract effectively detrimental candidate frames from the videos, and next estimates similarity between the extracted frames and normative images using the suggested algorithm. Then the detrimental candidate frames are selected from the result of similarity evaluation test which uses critical value. In our experimental test, it is suggested that the results of the comparison between the Color Histogram and the 2-Dimensional Projection Maps technique to detect detrimental candidate frames. Through the various experimental data to test the suggested method and the similarity algorithm, detecting method based on the 2-Dimensional Projection Maps show more superior performance than using the Color Histogram technique in calculation speed and identification abilities searching target video images.

• 동물약계
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• no.27
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• pp.6-6
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• 1995

1. 동물용의약품 제조업 신규허가 2. 수입자확인 변경 3. 가축질병 병성감정 실시기관 지정 4. 동물용 자가백신 활성화 건의 5. 국가검정품 관리시 유의사항 6. 생물학적제제 관련자료 수집 7. 동물용의약품등 생산$\cdot$판매실적 보고철저 8. 위생적인 축산물 생산 및 축산물내 유해물질 잔류방지 홍보를 위한 비디오 홍보매체 제작 9. 동물용의약품 안전사용기준 홍보용 책자제작에 관한 의견청취

• Cement Symposium
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• no.29
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• pp.245-252
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• 2002

소성 영역(Sintering zone)에서 클링커(Clinker)의 형상 형성은 시멘트 생산 공정에서 가장 중요한 생산 공정중의 하나이다. 소성공정의 진단 및 최적 제어의 핵심은 써모그래프(Thermo graph), 즉 적외선 카메라를 이용한 온도 분포의 측정이다. 여기에서 다룰 ''PIT Indicator'' 시스템은 분진이 많은 열악한 산업 현장의 연소 시스템에 적용할 수 있도록 특별히 설계한 공냉식의 2개 채널을 가진 광학 장비에 기초하고 있다. 비디오 영상과 써모그래프 이미지 그리고 다양한 연소 특성이 카메라를 통하여 얻어지고 자기 학습 기능을 가진 소프트웨어에서 기록되고 분석된다. 이때 얻은 데이터는 수학적 모델에서 온라인으로 Free Lime 함유율을 예측하는데 이용된다. 열분포의 써모그래프 표시와 공정상의 다양한 운전 특성을 분석하여 주는 ''PIT Indicator'' 소프트웨어를 통하여 다른 공정 제어 시스템과 연결이 가능하다. 이와 같은 하드웨어와 소프트웨어를 이용하여 최적화가 필요한 여러요소들의 최적화를 동시에 그리고 온라인으로 수행할 수가 있다. Free Lime 함유율의 연속적인 온라인 연산을 통해 생산 설비 및 공정에 맞는 최소한의 에너지를 Kiln 에 공급함으로써 근본적으로 1차 연료의 절감이 가능하고 NOx와 같은 유해 가스의 배출량도 제어할 수 있다. 또한 별도로 NOx에 대한 모델을 개발하여 NOx를 정확하게 예측하는 것도 가능하다.

• Journal of Korea Game Society
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• v.10 no.1
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• pp.65-78
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• 2010

In Video Software Dealers Association v. Arnold Schwarzenegger, the federal 9th Circuit Court decided that a California law imposing restrictions and a labeling requirement on the sale or rental of violent video games to minors (the "Act") violated rights guaranteed by the First and Fourteenth Amendments to the United States Constitution because: (1) the state introduced insufficient evidence to support a compelling interest that video games created psychological or neurological harm, (2) the Act was not the least-restrictive alternative to negate the harm, and (3) the lower, rational basis standard applicable to commercial speech did not apply to the Act's labeling requirements because the required label did not convey factual information. On the contrary, Korean Constitutional Court decided that "Harmful Medium to Youth" and "Preliminary Rate Classification" would be constitutional. However, under the least-restrictive method rule of the U. S. Court and Korean Court, overlap application of "Harmful Medium to Youth" and "Preliminary Rate Classification" could be a problem and it would be possible that stronger regulation among these would be found as unconstitutional.

• Journal of the Korean Society of School Health
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• v.7 no.1
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• pp.45-55
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• 1994

The purpose of this study is to contribute to improvement of educational environment by analysing all problems related to environment around the school. To accomplish this purpose, this study was carried out by examining the problems in controlling the areas required for cleanup with 220 teachers in charging the cleanup duties of the primary and secondary schools in Taegu between June 1 and July 15, 1993 and by actually surveying the prejudical business stores around 72 primary schools between August 10 and September 20, 1993. Although most teachers answered to the questionnaires that it is necessary to cleanup the bad environment around the school, the duties of its cleanup tend not to be considered as an important matter. The teachers considered that the most prejudical business store around the school is totally the game room, and in such order as comic books' store, liquor selling shop and causing noise and pollution. 57.3% of total respondents answered that the present cleanup movements have resulted in failure mostly because of both supervising authorities' careless promotion and store owners' excessive commercial transactions. The result of actual survey in environmental and sanitary cleanup area around 72 primary schools showed that the greatest number of 1,258 prejudical stores was the video tapes shop, and then in such order as lodgings, and game rooms, while the number of prejudical store by the schools was 17.5 stores per school on the average which showed a various distribution from zero to 77 places. In general, these prejudical stores were mainly located around the schools in Jung-gu and Seo-gu areas. In addition, it was shown that the more the number of students, the more the number of the prejudical stores. In order to improve the environment around the school, it is necessary to strictly carry out the zoning system relating to the usage of land, to strongly restrict the stores without permit and abnormal stores and to establish the basis asking the city development authorities to go through the environmental evaluation. Moreover, it is absolutely required to make efforts to establish the national right sense of education, and to closely cooperate with the related authorities.

• Journal of Korea Game Society
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• v.13 no.4
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• pp.47-60
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• 2013

Current perception of games is divided. On the one hand, they are criticized as harmful entertainment due to their violent content and addictive nature, and on the other hand, they are evaluated positively as products of a creative industry that offers alternative, interactive entertainment. Based on the latter, this paper will reevaluate the positive element of such games in relation to the museum, the canon of historical and cultural evaluation. The analysis on game culture introduction to the museums consists of three categories: the practical application that includes educational, communicational, and promotional purposes; the approval of games as industrial assets and their extensive cultural influence; and the indirect acceptance of art works using games. A panoramic view of game culture development would promote research on the link between game culture and museums; furthermore, it would establish a basis for an introduction of game culture in academia and predict the future of the industry.

• 한국지구물리탐사학회:학술대회논문집
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• 2004.08a
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• pp.104-117
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• 2004

Dmitri Donskoi, which went down during the Russo-Japanese War occurred 100 years ago, was found by using geophysical exploration techniques at the 400 m water depth of submarine valley off Jeodong of Ulleung Island. In the submarine area with the rugged seabed topography and volcanic seamounts, in particular, the reliable seabed images were acquired by using the mid-to-shallow Multibeam exploration technique The strength of corrosion (causticity) of the sunken Donskoi, measured by the electrochemical method, decreased to 2/5 compared with the original strength.