• Journal of the Institute of Electronics Engineers of Korea SP
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• v.39 no.6
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• pp.664-671
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• 2002

고속으로 압축변환을 하기 위해 DCT(Discrete Cosine Transform) 영역에서 영상의 해상도를 줄이는 MPEG-2 복호기를 제안한다. 제안하는 복호기는 움직임 보상을 하기 전에 DCT 영역에서 영상의 해상도를 줄이며 해상도가 줄어든 영상에 대해서 DCT 영역에서 움직임 보상을 수행한다. 본래 해상도의 영상 (N${\times}$CN)에서는 1/2화소 정밀도의 움직임 보상을 해야 하지만 해상도가 반으로 줄어든 영상(N/2${\times}$N/2)에 대해서는 1/4화소 정밀도의 움직임 보상을 수행해야 한다. 하지만 해상도가 줄어든 영상에 대해 1/4화소 정밀도의 움직임 보상을 수행하면 영상이 흐릿해지는 현상이 발생할 수 있다. 본 논문에서는 해상도를 줄인 영상에 대해 계산시간 뿐만 아니라 DCT 영역에서의 움직임 보상 시에 발생 할 수 있는 흐려짐도 줄일 수 있는 방법을 제안한다. 실험 결과는 제안한 방법이 높은 해상도의 영상을 낮은 해상도의 영상으로 효율적으로 복호할 수 있는 알고리즘이라는 것을 보여준다.

• Journal of radiological science and technology
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• v.16 no.1
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• pp.101-106
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• 1993

In order to assure safety of both patient and operator, and to provide uniform quality radiographs, it is necessary to perform periodic calibration of diagnostic X-ray equipment. A basic parameter of diagnostic equipment's and its image sharpness is the size(and shape the energy distribution) of the focal spot as viewed along the central X-ray beam. This size determines the resolution possible with the equipment and also determines the heat characteristics of an anode. A fine focus tube gives high resolution but causes high local heating of target. In past, the pin-hole and star pattern image measurement for evaluation of resolution have been widely used, but it produced blurring and inaccuracy of image. So newly inverted Ug-meter has advantage in more convenient measurement method and less out-put bias than other image measurement. The authors intended to compare measured focal size between Ug-meter and focal spot test tool, changed state from setting to now of units.

• Journal of Korea Game Society
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• v.9 no.2
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• pp.41-50
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• 2009

The convergence paradigm that appears with the integrated media environment has effect on digital storytelling using digital technology, then 'Trans-media storytelling' which is a new form of digital storytelling makes gradual expand its scope. This study focused on the Alternative Reality Game which adopt trans-media storytelling in the game genre. This paper interpreted the idea of ARG on comparing different forms of ARG and existing games and the distinctive features of ARG storytelling which is blurring the line between real and virtual on the Simulation theory. This is a valuable study for understanding the new storytelling form within the media convergence and developing the digital storytelling in the future.

• The Journal of Korean Institute of Electromagnetic Engineering and Science
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• v.17 no.10 s.113
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• pp.913-919
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• 2006

This paper presents a technique for motion compensation of ISAR(Inverse SAR) images for a moving target. If a simple fourier transform is employed to obtain ISAR image for a moving target, the image is usually blurred. These images blurring problem can be solved with the time-frequency transform. In this paper, motion compensation algorithms of ISAR image such as STFT(Short Time Fourier Transform), GWT(Gabor Wavelet Transform) are described. In order to show the performances of each algorithm, we use scattering wave of the ideal point scatterers and simulated MIG-25 to obtain motion compensated ISAR image, and display the resolution of STFT and GWT ISAR image.

• The Journal of Korean Obstetrics and Gynecology
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• v.21 no.1
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• pp.267-275
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• 2008

Purpose: The purpose of this study is to report the effect of oriental treatments for parkinsonism after puerperal period. Methods: We treated one 29-years-old female who had parkinsonism (dysarthria, gait disturbance, dizziness, tremor, rigidity, blurring of vision) after puerperal period with herb medication ( Chengsimondamtang -淸心溫膽湯, etc). Results: After oriental medical treatment, the clinical symptom of parkinsonism after puerperal period was improved. Conclusion: This case study shows that the oriental medical therapy is effective in treating parkinsonism after puerperal period. So that, it is helpful in decreasing the symptoms of patients and in improving quality of life.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.7 no.4
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• pp.758-766
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• 2003

This paper proposes a tree-based hierarchical image mosaicing system using camera and object parameters for efficient video database construction. Gray level histogram difference and average intensity difference are proposed for scene change detection of input video. Camera parameter measured by utilizing least sum of square difference and affine model, and difference image is used for similarity measure of two input images. Also, dynamic objects are searched by through macro block setting and extracted by using region splitting and 4-split detection methods. Dynamic trajectory evaluation function is used for expression of dynamic objects, and blurring is performed for construction of soft and slow mosaic image.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.7 no.4
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• pp.833-838
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• 2003

This paper presents novel methods of recognizing license plates of passing vehicles outdo(n. In particular, the proposed method is much robust for inclined plates caused by the changes of camera placement. To acquire fine images of quickly passing vehicles under a wide range of illumination conditions, we developed a sensing system having superb characteristics. We expanded the dynamic range and eliminated the blurring of images of fast moving vehicles by synthesizing a pair of synchronized images with different intensities. furthermore, to extend the flexibility of the positioning of the TV camera, we propose a recognition algorithm that can be applied to inclined plates. The performance of the integrated system was investigated on real images of vehicles captured under various illumination conditions. The recognition rates of over 99% (conventional plates) and over 97% (highly inclined plates) shows that the developed system is effective for license plate recognition.

• KIPS Transactions on Software and Data Engineering
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• v.2 no.7
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• pp.487-494
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• 2013

Medical image watermarking has received extensive attention as wide security services in the healthcare information system. This paper proposes a blind medical image watermarking approach on the segmented gray-matter (GM) images by utilizing discrete wavelet transform (DWT) and discrete cosine transform (DCT) along with enhanced suppressed fuzzy C-means (EnSFCM) for the optimal selection of sub-blocks position to insert a watermark. Experimental results show that the proposed approach outperforms other methods in terms of peak signal to noise ratio (PSNR) and M-SVD. In addition, the proposed approach shows better robustness than other methods in normalized correlation (NC) values against several attacks, such as noise addition, filtering, JPEG compression, blurring, histogram equalization, and cropping.

• Korean Institute of Interior Design Journal
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• v.24 no.6
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• pp.119-127
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• 2015

Sou Fujimoto is well known as the 3rd Japanese architect to participate in the Serpentine Pavilion project, especially youngest of all architects. His projects seem very experimental yet inviting, modern yet comforting and these feeling may be resulted in his metaphor of 'Forest' that is very often mentioned in his writings which originally comes from his personal experience of the city and nature. The purpose of this paper is to understand the Fujimoto's metaphor of 'Forest' and design language he uses to express this very idea. The researchers have analyzed Fujimoto's writings and interviews in order to understand his general design ideas and process, then extracted wordings describing 'Forest' in his works. Four main concepts were found and categorized as follows: blurring territorial boundaries, proliferation of parts, manipulating spatial relationships, and ambiguity in function. Then two or three projects were selected and analyzed in each category to understand design methods used. The results show that Fujimoto enjoys using gradation of density to blur territorial boundaries in order to express ambiguous outline of forest, and fractal reproductions in proliferation of parts to uses express wavering whole and modifying angles in manipulating spatial relationships to show hidden order.

• Journal of the Korean Society of Clothing and Textiles
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• v.30 no.12 s.159
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• pp.1672-1682
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• 2006

Attitudes about the ideal body are influenced by media, including fashion magazine advertisements. The purpose of our study was to analyze the ideal body image for males and females in contemporary society. We analyzed the contemporary ideal gender image through the examination of physical characteristics(body type, age), and fashion styles(hair, make up, supplements, clothing styles, body exposure) in fashion advertisements published in Gentlemen's Quarterly(GQ) and Vogue issued during 2002. The results indicate some blurring in masculinity and femininity resulting in gender neutralization and naturalness pursuing natural appearances. But, some previous beauty norms related to masculinity and femininity remained.