• Proceedings of the Korea Information Processing Society Conference
• /
• 2013.05a
• /
• pp.367-370
• /
• 2013

단일 영상에서 3차원 정보를 획득하기 위해 가장 많이 사용되는 단서로는 소실점이 있다. 본 논문에서는 소실점을 추정하기 위해서 허프변환을 사용하여, 단일 영상의 소실점 탐색 시 유효 직선간의 기울기 값 비교 및 근접도를 구하여 교점 생성에 필요 없는 정보를 제거함으로서 소실점 추정 정확도를 높인 보다 정확한 소실점 탐색 기법을 제안하였다.

• Journal of Korean Academy of Nursing Administration
• /
• v.19 no.1
• /
• pp.76-86
• /
• 2013

Purpose: This study was done to examine the effects of information searches from media as communication cues for health behavior, specifically smoking, drinking liquor, cancer examinations, and regular exercise. Methods: Data were collected through a web survey with a sample size of 600 and analyzed using SPSS 18.0. Results: The results show that the newspaper as a communication cue has an effect on health behavior such as regular exercise and smoking, whereas television only affects regular exercise. Conclusion: The results indicate that there are differences between media as communication cues to improve health behavior and that messages related to health information should be exposed with cautious consideration to media choice so as to increase the effects of message. Managerial implications of the study results are suggested.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.13 no.3
• /
• pp.1302-1309
• /
• 2012

In this paper, we propose applying differential techniques for 2D/3D video conversion to the objects grouped by depth information. One of the problems converting 2D images to 3D images using the technique tracking the motion of pixels is that objects not moving between adjacent frames do not give any depth information. This problem can be solved by applying relative height cue only to the objects which have no moving information between frames, after the process of splitting the background and objects and extracting depth information using motion vectors between objects. Using this technique all the background and object can have their own depth information. This proposed method is used to generate depth map to generate 3D images using DIBR(Depth Image Based Rendering) and verified that the objects which have no movement between frames also had depth information.

• Proceedings of the Korea Multimedia Society Conference
• /
• 2001.06a
• /
• pp.529-532
• /
• 2001

본 논문에서는 보안 시스템에서 사람 인식을 위한 중요한 단서 중의 하나인 사람의 키를 측정하는 알고리즘으로, 이미지 시퀀스에서 사람의 영역을 추출하고 기하학적 정보를 이용해 추출된 사람의 키를 측정하고자 한다. 이를 위해 단일 이동 물체 사람을 대상으로 하여 시퀀스 이미지에서 사람의 움직임 정보를 추출하고, 추출된 영역에서 수직 히스토그램 투영을 하여 사람의 중심선을 찾아 머리와 발의 좌표점을 추출한다. 추출된 좌표점들은 소실점과 소실선의 기하학적 해석과 미리 입력한 다른 물체의 기준높이를 가지고 실세계에서의 사람의 키를 측정하게 된다.

• Korean Journal of Cognitive Science
• /
• v.2 no.2
• /
• pp.261-278
• /
• 1990

Two experiments were performed to test whether the perception of subjective contours occurs not only through bottom-up processes but also throught top-down processes by manipilating such cognitive factors as superimposition cues and selective attention.In the first experiment,the phenomenon of neon color spreading effect was used to investigate the effect of superimpoed Kanizsa triangles.To identify the effect of superimposition, two different colors were used,one for each overlapped Kanizsa triangle,and the subjects were asked which neon-like color they saw for the overlapped portion.Result indicates that the only neon-like color of the superimposing triangle can be perceived,which implies that super impostition cues may act upon the formation process of subjective contour as a a sort of top-down information.In the second experiment,two partially ovwelapped Kanizsa squares of which direction of superimposition were ambiguous and thus reversable depending on the observer's mental set were used to inverstigate the effect of selective attention.Subjects were instructed to pay attention only to one of the squares and report the neon- like color of the overlapped portion of them.Result shows that the subjects perceive only the neon-like color of superimposing square,which implies that such cognitive factors as selective attention may strongly influence the formation of subjective contours. In conclusion,the results of this study show that the subective contour does not depend only on bottom-up processes but also on such cognitive factors as super-imposition cues and selective attention.

• Science of Emotion and Sensibility
• /
• v.17 no.3
• /
• pp.39-48
• /
• 2014

Good and bad luck is an important factor that frequently affects human information processing. However, in spite of its significance, few studies have been done to examine how good and bad luck influences information processing and reasoning. The current research was performed to explore the effect of good and bad luck on reasoning and, for this, two experiments were conducted. In experiment 1, participants were primed with good or bad luck and were asked to make an inference for a given murder case and include as many as clues for it, while in experiment 2, participants were asked to exclude as many as clues for the same murder case. Results show that, in experiment 1, participants who were primed with good luck included more clues than those who were primed with bad luck. However, in Experiment 2, it was found that participants who were primed with bad luck excluded more clues than those who were primed with good luck. Findings from this study indicate that priming good luck enhances holistic thinking which leads to including more and excluding less clues whereas priming bad luck increases analytic thinking which leads to including less and excluding more clues. Implications of this study for inference and decision making, consumer behavior, and addict psychology are discussed.

• Journal of KIISE:Software and Applications
• /
• v.27 no.7
• /
• pp.769-783
• /
• 2000

In this paper, in order to disambiguate Korean noun word sense, we define a local context and explain how to extract it from a raw corpus. Following the intuition that two different nouns are likely to have similar meanings if they occur in the same local context, we use, as a clue, the word that occurs in the same local context where the target noun occurs. This method increases the usability of extracted knowledge and makes it possible to disambiguate the sense of infrequent words. And we can overcome the data sparseness problem by extending the verbs in a local context. The sense of a target noun is decided by the maximum similarity to the clues learned previously. The similarity between two words is computed by their concept distance in the sense hierarchy borrowed from WordNet. By reducing the multiplicity of clues gradually in the process of computing maximum similarity, we can speed up for next time calculation. When a target noun has more than two local contexts, we assign a weight according to the type of each local context to implement the differences according to the strength of semantic restriction of local contexts. As another knowledge source, we get a co-occurrence information from dictionary definitions and example sentences about the target noun. This is used to support local contexts and helps to select the most appropriate sense of the target noun. Through experiments using the proposed method, we discovered that the applicability of local contexts is very high and the co-occurrence information can supplement the local context for the precision. In spite of the high multiplicity of the target nouns used in our experiments, we can achieve higher performance (89.8%) than the supervised methods which use a sense-tagged corpus.

• Proceedings of the Korea Institutes of Information Security and Cryptology Conference
• /
• 2002.11a
• /
• pp.330-333
• /
• 2002

일반적으로 시스템들은 관리자를 위한 많은 로깅 기능을 제공한다. 이러한 로깅 기능에는 사용자 행위를 파악하는 부분도 제공하고 있으나 정작 사용자들이 입력하는 명령어를 직접 로깅하는 기능은 없거나 매우 미약하다. 시스템 사용자들이 입력한 명령어는 시스템 자체에서 사용자가 어떤 행위를 하였는가를 가장 확실히 보여주는 중요한 단서이다. 본 논문에서는 리눅스 커널을 기반으로 하여 사용자 키스트로크를 로그로 남길 수 있는 방법을 제안하고 구현한다.

• Proceedings of the Korean Information Science Society Conference
• /
• 2001.10a
• /
• pp.475-477
• /
• 2001

프레임웍의 결함들을 효과적으로 발견하기 위해서는 테스트 실행 과정 중에서 결함들이 민감하게 감응하여 결함으로 인한 오동작의 흔적이 남겨질 수 있어야 한다 그런데 프레임웍은 개조, 합성된 확장 부위에 결합되는 후크 클래스(hook class)들의 시험에 대한 제어와 관찰이 어려운 성실을 가지고 있다. 이를 해결하기 위해 프레임웍의 정상동작 여부를 판단하는데 단서가 되는 자료(clue data)를 포착하여 외부로 드러내는 기능을 수행하는 테스트 센서타이저를 설계하였다.

• 한국HCI학회:학술대회논문집
• /
• 2006.02a
• /
• pp.1305-1312
• /
• 2006

최근 들어 휴대성을 강조한 휴대폰이나 PDA 같은 다양한 모바일 기기의 등장으로 언제 어디서나 원하는 정보를 탐색할 수 있게 되었으나 기기는 점점 작아지는 반면, 기능은 증가하고, 많은 기기들이 데스크톱 인터페이스를 그대로 차용하여 작은 모바일 기기에는 적합하지 않은 결과를 낳고 있다. 따라서 본 연구는 청각 피드백을 이용한 공간정보 단서를 제공하여 작은 기기의 사용성을 높이는데 초점을 두고 있다. 이를 위하여, 실험 1에서는 두 가지 메뉴 구조에서 세 가지 청각 피드백의 영향을 조사하였는데, 격자메뉴와 한 줄 메뉴에서 각 청각피드백이 미치는 영향과 사용자의 선호도를 조사하였다. 실험 결과, 격자메뉴에서 수행이 좋았으나, 청각 피드백 유형별 수행 차이는 나타나지 않았고, 각 피드백에 대한 선호도에서도 차이가 나타나지 않았다. 실험 2에서는 실험 1에서 사용된 정보를 제공하는 청각적 피드백을 음 높이와 음의 개수 속성으로 세분화하여 PDA에서 메뉴 탐색 수행을 4블록으로 나누어 조사하도록 설계하였다. 실험 결과, 음 높이 속성만 갖는 피드백은 블록이 진행되면서 반응 시간에 있어서 피로도가 나타난 반면, 음 개수 속성만 갖는 피드백은 블록이 진행되어도 피로도가 나타나지 않았다. 한편, 두 속성을 모두 갖는 피드백은 블록이 진행되면서 보행 속도가 유의미하게 줄어드는 것을 발견하였다. 본 연구의 결과는 앞으로 유비쿼터스 환경에서 사용자에게 효율적인 청각 피드백을 통해 공간 정보를 제공함으로써 휴대기기의 사용성을 높일 수 있는 한 가지 가능성을 제시한다는 데 의의가 있다.