• Journal of Internet Computing and Services
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• v.25 no.1
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• pp.29-37
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• 2024

In this paper, we propose an efficient image processing system to detect and track the movement of specific objects such as patients. The proposed system extracts the outline area of an object from a binarized difference image by applying a thinning algorithm that enables more precise detection compared to previous algorithms and is advantageous for mixed-mode design. The binarization and thinning steps, which require a lot of computation, are designed based on RTL (Register Transfer Level) and replaced with optimized hardware blocks through logic circuit synthesis. The designed binarization and thinning block was synthesized into a logic circuit using the standard 180n CMOS library and its operation was verified through simulation. To compare software-based performance, performance analysis of binary and thinning operations was also performed by applying sample images with 640 × 360 resolution in a 32-bit FPGA embedded system environment. As a result of verification, it was confirmed that the mixed-mode design can improve the processing speed by 93.8% in the binary and thinning stages compared to the previous software-only processing speed. The proposed mixed-mode system for object recognition is expected to be able to efficiently monitor patient movements even in an edge computing environment where artificial intelligence networks are not applied.

• Journal of the Korean Home Economics Association
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• v.38 no.7
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• pp.133-152
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• 2000

This study was inquire into the state of the family ethics during the period of the beginning of 1880′s to the 3.1 independence movement of 1919 which has been the black period in the history of Korean family ethics. The research was conducted by analyzing the newspapers, magazines, related literature and articles of the period. It was the beginning of the 1860′s and by the "Cheondo-Kyo" (the Religion of the Heavenly) way that the issues regarding the equality of sexes as the central concern of the modem family ethics came to be the object of the social discourse for the first time in Korean history. The social discourse had come to be positively activated around 1900, when the intellectuals of the "Korean enlightenment" had begun to the feel necessity of the modernization of Korean socialite and the importance of the women education as the essential part of it. However, the activation of the social discourse itself, especially with the newspapers of that period did not mean the changes of the traditional Confucian family ethics, but the discourse of the modernizing forces had become the seeds for changing the family ethics of the Korean people. The made chauvinistic nature of the family ethics of the period was not so much different from those of the preceeding patriarch societies, but the state of the family ethics during the period are characterized by several social phenomenon such as the rising needs of using the "Hangle"(Korean alphabet) instead of Chinese character for the equal education of the both sexes, increasing practices of the early marriage, customs of trade marriage in accordance with the demand of excessive weeding presents, and regarding social consciousness of the traditional family ethics as patriotics attitude against the Christian rejection of the ancestor worship ritual.

• Journal of the Korea Computer Graphics Society
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• v.14 no.1
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• pp.1-10
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• 2008

In this paper, we present a novel method for creating a hand-painted painterly animation, starting from a video input. One of the most important aspects in painterly animation is to maintain the temporal coherence of brush strokes between frames, which plays a vital role to warrant a smooth transition between frames. Our unique utilization of motion areas enables users to produce a smooth movement of brush strokes. The motion areas are the parts where objects move between frames and they are categorized in two main types. A strong motion area is the part where the movement of real edges and hidden edges is determined by the motion vector between frames. The real edge is the outline of an object and the hidden edge is the boundary to represent the direction of a grain of intensity in the areas with gradations. A weak motion area is the remainder after subtracting the strong motion area from the entire motion area. Temporally coherent painterly animation is achieved by re-painting the brush strokes on the canvas using two motion areas, resulting in a natural and hand-painted appearance.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.22 no.5
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• pp.709-714
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• 2018

Visual Reality technology is becoming more and more interesting as it attracts people's interest. VR technology is used in various markets such as games, animation, and education. However, there were many people experiencing motion sickness such as dizziness and headache due to the delay time between hardware such as a device for sending a video after experiencing a VR image and an HMD for reproducing an image. The system proposed in this paper focuses on the environment rather than the movement of the attraction and detects the dividing line existing on the path by the proximity sensor and accurately calculates the position on the path according to the user 's motion. Since the position of the user is synchronized with the VR image, the position error of the user is improved to 0.2%.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.10 no.4
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• pp.83-90
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• 2010

In this paper, we use VR technologies including touch processing technologies and haptic devices to offer touch of fish objects to users. The Omni, a kind of haptic device and made by Sensable Inc., is used to implement multi touch model in VR space. In addition, Matlab/Simulink and proSENSE Virtual Touch Toolbox of Handshake Inc., are used as programing tools. Functions needed to describe the movement of x, y, and z axis respectively are applied to delineate the natural movement of fish objects modeled with 3D. Such movements offer realistic physical interactions to two users controlling multi point respectively. In experiment, to perceive the appearance of 3D object by touch and to feel the respiration by touch are well conducted. We also verify that it is possible to develop games or contents through multi participation in VR Space by using multi point.

• Journal of Science and Technology Studies
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• v.13 no.2
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• pp.71-110
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• 2013

As a patient has recently been recognized as not a passive object but a subject of medical services, various attempts are being made to strengthen the status of a patient. Medical communication which has been led by a doctor so far is being made with a focus on a patient due to sovereignty of a consumer and activation of medical information. The purpose of this paper is to investigate the process to strengthen the status of a patient as a consumer of health care service through a patient association and consumer movement as medical information becomes public. As the patient centered medical service is creating a variety of health care service market using IT technologies, it has contributed to the improvement on asymmetry of medical information. As the expansion of IT fusion health care market is bringing the fundamental change into the traditional relationship between a doctor and a patient, the medical service market is being re-organized. A patient centered medical service such as expansion of mobile health care model led by a patient is being accelerated.

• Journal of The Korean Association For Science Education
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• v.24 no.6
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• pp.1049-1062
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• 2004

In this study, various scientific viewpoints of 'motion of objects' were analyzed from the Aristoteles age to the Newton age. From the analysis, a questionnaire was developed which was including causes of motion, forms of motion, and preservation quantity of movement. The conceptions of pre-service science teachers were researched by the questionnaire developed in this study based on the science historical viewpoints. The subjects were twenty sophomore students of physic education major and thirty four of other science education major who majored common science education also in a college. Most of the pre-service teachers of physical education major had inertia and Newton's force conception related to the question situations of 'causes of motion' and 'forms of motion'. But a lot of the pre-service teachers of physic education major and other science education major had viewpoints of Descartes or Huygens related to the question situation of 'preservation quantity of movement'. Only few pre-service teachers regardless of major had Newton's viewpoint which represented in current Korean science curriculum for secondary school.

• The Journal of the Korea Contents Association
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• v.6 no.3
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• pp.135-142
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• 2006

An animation character can be applied an Elasticity principle to strengthen an action and expression. That principle is called as Squash & Stretch in animation. The application of this principle gives the illusion of weight and volume to an animation character, and makes it possible that an animation action be the smooth and soft by escaping from the stiffness and rigidity. If an action of human or object on animation is expressed like a real world, it seems to be unnatural. Any action without Squash & Stretch will look rigid, uninteresting and not alive. It can be applied to movement of all objects, characters' actions, dialogues and facial expressions with a basic rule of mass, volume and gravity. Havier characters squash and stretch more than thinner ones. Any action will not be well expressed without this principle. To be a good animation movement, it should be widely applied in all type of animation, not only 2D animation.

• Proceedings of the Korean Society for Agricultural Machinery Conference
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• 1996.06c
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• pp.591-597
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• 1996

To straighten the path that farm machinery follows in paddy fields, it is necessary to measure and evaluate the tracks that these machines leave behind. However, there are no known methods for making such measurements and evaluations since it is difficult to accurately trace the paths that the machine make in paddy fields. Therefore, a measuring system has been developed which can accurately recored the path of a farm machinery in a field by measuring the horizontal straight-line distance from the side of the field to the machine. This system consists of a track subsystem on the machine and a range finder system. A measuring appraratus is installed on a flatcar which runs on rails over 50 m long at the side of the filed. The track subsystem uses a CCD camera to track the movement of the machine in the field which is following a lengthwise path. The range finder subsystem measures the distance that the measuring apparatus has traveled on the rails and the distance from the app ratus to the machine in the field. This system makes it possible to record the path that the machine travels. Even though differences in traveling distance arise between the measuring apparatus and the farm machine, these differences are detected by image processing , which allows the machine in the field to be located accurately. The short(0.05 second) time required for image processing is enough to follow an object . In the present study, this system was able to measure the path that a moving tractor makes. Even though a lag of up to 0.4 meters occurred, this system did not miss its target during operation of the track subsystem. Thus the path measuring system developed here is able to record vehicle paths automatically by following the movement of vehicles in the field and measuring the distance to them. It is expected to come into use in such applications as unmanned moving vehicle tests.

• Journal of the Institute of Electronics Engineers of Korea SC
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• v.47 no.4
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• pp.47-54
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• 2010

We propose a smart human-computer interface replacing conventional mouse interface. The interface is able to control cursor and command action with only hand performing without object. Four finger motions(left click, right click, hold, drag) for command action are enough to express all mouse function. Also we materialize cursor movement control using image processing. The measure what we use for inference is entropy of EMG signal, gaussian modeling and maximum likelihood estimation. In image processing for cursor control, we use color recognition to get the center point of finger tip from marker, and map the point onto cursor. Accuracy of finger movement inference is over 95% and cursor control works naturally without delay. we materialize whole system to check its performance and utility.