• The Journal of Korean Institute of Communications and Information Sciences
• /
• v.37 no.1A
• /
• pp.57-63
• /
• 2012

In this paper, we propose a real-time view interpolation method using virtual viewpoint disparity estimation and convergence check. For the real-time process, we estimate a disparity map at the virtual viewpoint from stereo images using the belief propagation method. This method needs only one disparity map, compared to the conventional methods that need two disparity maps. In the view synthesis part, we warp pixels from the reference images to the virtual viewpoint image using the disparity map at the virtual viewpoint. For real-time acceleration, we utilize a high speed GPU parallel programming, called CUDA. As a result, we can interpolate virtual viewpoint images in real-time.

• The Mathematical Education
• /
• v.26 no.2
• /
• pp.9-13
• /
• 1988

Mathematics education is generally to cultivate mathematical thought. Most meaningful thought is to solve a certain given situation, that is, a problem. The aim of mathematies education could be identified with the cultivation of mathematical problem-solving ability. To cultivate mathematical problem-solving ability, it is necessary to study the nature of mathematical ability and its aspects pertaining to problem-solving ability. The purpose of this study is to investigate the relation between problem-solving ability and classficational viewpoint of mathematical verbal problems, and bet ween the detailed abilities of problem-solving procedure and classificational viewpoint of mathematical verbal problems. With the intention of doing this work, two tests were given to the third-year students of middle school, one is problem-solving test and the other classificational viewpoint test. The results of these two tests are follow ing. 1. The detailed abilities of problem-solving procedure are correlated with each other: such as ability of understanding, execution and looking-back. 2. From the viewpoint of structure and context, students classified mathematical verbal problems. 3. The students who are proficient at problem-solving, understanding, execution, and looking-back have a tendency to classify mathematical verbal problems from a structural viewpoint, while the students who are not proficient at the above four abilities have a tendency to classify mathematical verbal problems from a contextual viewpoint. As the above results, following conclusions can be made. 1. The students have recognized at least two fundamental dimensions of structure and context when they classified mathematical verbal problems. 2. The abilities of understanding, execution, and looking- back effect problem-solving ability correlating with each other. 3. The instruction emphasizing the importance of the structure of mathematical problems could be one of the methods cultivating student's problem-solving ability.

• Journal of The Korean Association For Science Education
• /
• v.40 no.6
• /
• pp.583-594
• /
• 2020

In this study, the existing concept of density has a limitation in providing the cause of phenomena, and the concept of buoyancy poses a problem because it has many misconceptions and requires an overly difficult concept to understand quantitative calculation, so we suggest an explaining method as process viewpoint introducing the principle of lever. The new method of explanation has been proposed using the lever as visual tool to reveal the gravity as the fundamental principle and process viewpoint. As a result, teachers stayed on many alternative concepts and less than half of the teachers were aware that density was related to gravity. In addition, they recognized it as matter viewpoints, but there is a meaningful conceptual change after intervention(p<.000). Also, they evaluated that the new method is better able to recognize the principle and process viewpoint than the existing description method. Through this, we can confirm the educational value of explaining method as process viewpoint introducing the principle of lever.

• KSII Transactions on Internet and Information Systems (TIIS)
• /
• v.16 no.3
• /
• pp.929-946
• /
• 2022

Free viewpoint video (FVV) service is an immersive media service that allows a user to watch it from a desired location or viewpoint. It is composed of various forms according to the direction of the viewpoint of the provided video, and includes zoom in/out in the service. As consumers' demand for active watching is increasing, the importance of FVV services is expected to grow gradually. However, additional considerations are needed to seamlessly stream FVV service. FVV includes a plurality of videos, video changes may occur frequently due to movement of the viewpoint. Frequent occurrence of video switching or re-request another video can cause service delay and it also can lower user's quality of service (QoS). In this case, we assumed that if a video showing an object that the user wants to watch is selected and provided, it is highly likely to meet the needs of the viewer. In particular, it is important to provide an object-oriented FVV service when zooming in. When video zooming in in the usual way, it cannot be guaranteed to zoom in around the object. Zoom function does not consider about video viewing. It only considers the viewing screen size and it crop the video view as fixed screen location. To solve this problem, we propose a zoom in/out method of object-centered dynamic adaptive streaming of FVV in this paper. Through the method proposed in this paper, users can enjoy the optimal video service because they are provided with the desired object-based video.

• Journal of Sasang Constitutional Medicine
• /
• v.15 no.2
• /
• pp.9-23
• /
• 2003

1. Objects of a study Dong-mu emphasized knowing who he or she is to treat disease, so this parer was written to summarize Dong-mu's thought on human 2. Methods of a study ${\ulcorner}Dongyi$ Suse Bowon Sasang $Choboguon{\lrcorner}$ is Dong-Mu's early writing, is composed of three chapters, which are ${\ulcorner}$Won-in$(原人)${\lrcorner}$ . ${\ulcorner}$Byung-byun(病變)${\lrcorner}$ . ${\ulcorner}$Yak-bang(藥方)${\lrcorner}$ . This is chiefly written on human, so this paper was written by summarizing Dong-mu's general and constitutional thought on human in ${\ulcorner}Dongyi$ Suse Bowon Sasang $Chobonguon{\lrcorner}$ 3. Results and Conclusion 1. Dong-mu's viewpoint of human in ${\ulcorner}Dongyi$ Suse Bowon Sasang $Chobonguon{\lrcorner}$ is viewpoint of human in the base of 'Human Nature(人性)-Human Form(人形)' and viewpoint of human in the base of 'Affairs-Mind-Body-Objects(事心身物)'. 2. The general viewpoint of human suggested in ${\ulcorner}Dongyi$ Suse Bowon Sasang $Chobonguon{\lrcorner}$ is that 'Nature-Emotion(性情)' is a action of mind and 'Knowing-Acting(知行)' is a action of body in human. He emphasized that we should try to become saint through controling 'Nature-Emotion(性情)' and 'Knowing-Acting(知行)' 3. It was thought that The span of lift is different according to the volume of Oi(氣) existed in the smallest organ. To manage the Qi(氣) existed in the smallest organ, it is very important to recover 'Good Qi of each constitution(體質正氣)' through cultivating Heart and body. 4. The constitutional viewpoint of human suggested in ${\ulcorner}Dongyi$ Suse Bowon Sasang $Chobonguon{\lrcorner}$ is that Human is classified into four constitutions according to 'Natural Principle of Organ(臟腑性理)' of 'Human Nature(人性)' mind and 'Knowing-Acting(知行)' of 'Human Form(人形)' 5. The viewpoint of human suggested in ${\ulcorner}A$ Aphorism in Teaching Children(敎子平生箴)${\lrcorner}$ emphasized 'Heart('心')'. but The viewpoint of human suggested in ${\ulcorner}Dongyi$ Suse Bowon Sasang $Chobonguon{\lrcorner}$ emphasized' Natural Principle of Organ(臟腑性理)' of 'Human Nature(人性)' mind and 'Knowing-Acting(知行)' of 'Human Form(人形)' and developed the viewpoint of human suggested in ${\ulcorner}Dongyi$ Suse $Bowon{\lrcorner}$.

• Journal of Broadcast Engineering
• /
• v.15 no.2
• /
• pp.163-172
• /
• 2010

The free viewpoint video delivers an active contents where users can see the images rendered from the viewpoints chosen by them. Its applications are found in broad areas, especially museum tour, entertainment and so forth. As a new free-viewpoint application, this paper presents a stereoscopic free-viewpoint TIP (Tour Into Picture) where users can navigate the inside of a single image controlling a virtual camera and utilizing depth data. Unlike conventional TIP methods providing 2D image or video, our proposed method can provide users with 3D stereoscopic and free-viewpoint contents. Navigating a picture with stereoscopic viewing can deliver more realistic and immersive perception. The method uses semi-automatic processing to make foreground mask, background image, and depth map. The second step is to navigate the single picture and to obtain rendered images by perspective projection. For the free-viewpoint viewing, a virtual camera whose operations include translation, rotation, look-around, and zooming is operated. In experiments, the proposed method was tested eth 'Danopungjun' that is one of famous paintings made in Chosun Dynasty. The free-viewpoint software is developed based on MFC Visual C++ and OpenGL libraries.

• Journal of the Korean Association of Geographic Information Studies
• /
• v.16 no.2
• /
• pp.101-113
• /
• 2013

The concern on environmental quality makes the landscape analysis more important than before ever. For the landscape analysis, selection of viewpoint is one of most important stage. Because of its subjectiveness, the conventional viewpoint selection method often missed some viewpoints of importance. The purpose of this study is to develop a viewpoint selection method for landscape analysis using GIS data and techniques. During the viewpoint selection process, spatial and attribute data from several GIS systems were hired. Query and overlay methods were mainly adapted for analysis to find out meaningful viewpoints. The 3D simulation analysis on DEM(Digital Elevation Model) was used for every selected viewpoint to examine wether the view target is screened out or not. Application study at a sample site showed some omissions of good viewpoints without any screening. It also exhibited the possibility to reduce time and cost for the viewpoint selection process of landscape analysis. For the progress of applicability, GIS data analysis process have to be improved and more modules such as automatic screening analysis system on selected viewpoint have to be developed.

• 제어로봇시스템학회:학술대회논문집
• /
• 1995.10a
• /
• pp.199-202
• /
• 1995

The authors experienced some industrial processes which essentially require human expertise. Human expertise for those processes have characteristics in common, and such human knowledge is described from a unified viewpoint in order to utilize it in automatization.

• 사회경제평론
• /
• v.31 no.3
• /
• pp.307-346
• /
• 2018

Gunnar Myrdal has struggled throughout his academic life with the problem of the role of valuations in social sciences. His earlier viewpoint was that valuations should be completely separated from scientific analysis on facts. But he soon fundamentally changed his viewpoint. His later viewpoint was that social scientists should disclose his valuations, for valuations intervene all the processes of scientific researches. Value premises are the valuations coherently reconstructed and manifestly articulated. Myrdal argued that social scientists should disclose value premises and perform his analysis and normative judgement based on the value premises. And the value premises should be derived from the valuations held by the large or significant groups of the society under study, not from the researcher's own valuations. This paper tried to show that Myrdal's later viewpoint must meet the crux, that researcher's own viewpoint must intervene in choosing valuations of particular group among diverse groups in the society under stduy, and in deriving and reconstructing value premises from the valuations of that group. And it argued that the reason why Myrdal met the crux could be explained by that he accepted the emotivism of Axel $H{\ddot{a}}gersr{\ddot{o}}m$. And it proposed some methodological solutions for escaping the crux Myrdal met, while preserving the positive elements of Myrdals' viewpoint.

• Korean Institute of Interior Design Journal
• /
• no.36
• /
• pp.111-120
• /
• 2003

Asian design has mastered the use of natural elements in the home to create a sense of harmony and balance. The viewpoint of the West recognizes the nature to be conquered while the viewpoint of the Orient recognizes it to be unison with a human being. Additionally, the viewpoint of the Orient reflects a harmonious relationship between the human being and the nature, and it does not see assuredly from an opposed viewpoint. The Five elements, one of oriental notion, are based on an affinity between the human being and the nature. The objectives of this study are to understand the Five elements composed of wood, fire, earth, metal, water and to suggest a substantial method for treating a harmonious and balanced environment in the collaboration of the interior materials by the Five elements. When the interior materials incorporate all the relationships of the Five elements, a space will accomplish harmony with the nature and the universe, thus it will be in tune with surrounding.