• Journal of the Optical Society of Korea
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• 제16권1호
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• pp.29-35
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• 2012

We propose a subpixel scale elemental image generation method to correct the errors created by finite display pixel size in integral imaging. In this paper, two errors are mainly discussed: pickup-and-display mismatch error and mismatch error between pixel pitch and lens pitch. The proposed method considers the relative positions between lenses and pixels in subpixel scale. Our proposed pickup method calculates the position parameters, generates an elemental image with pixels completely inside the lens, and generates an elemental image with border pixels using a weighted sum method. Appropriate experiments are presented to verify the validity of the proposed method.

• 국제교류와 융합교육
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• 제2권2호
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• pp.35-58
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• 2022

Korean movies and TV shows have been widely distributed in the international market and have played an important role in shaping the national image of Korea. In this paper, we found that the factors of "actor's image" and "background music and images" among the popular factors of Korean dramas have a positive influence on shaping the national image of Korea through questionnaires and spss tools. At the same time, the study also hopes to analyze the reasons for the success of Korean film and television productions to explore their useful value for the international communication of Chinese film and television productions.

• Journal of Biosystems Engineering
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• 제26권3호
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• pp.279-286
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• 2001

The purpose of this study were to organize a sorting system, to develop an algorithm of image processing for the shape sorting, and to finally develop a scientific and objective shape sorting system of Korean Red-Ginseng for mechanization of the shape sorting. The results of this study are followed. 1. The shape sorting system of Korean Red-Ginseng consists of a control computer, a color CCD camera(WV-CP4110) for image processing, an image processing board(DT3153), and an image acquisition unit. 2. Many image processing skill, such as sliding, stretching, threshold, binary and D$\sub$t/ were used to analyze the shape sorting factors of Korean Red-ginseng. 3. The sorting accuracy of the shape sorting system for the Korean Red-Ginseng was 74.7%. It is 21.1% lower than that of human inspector. Although the system has low accuracy, using more cameras may improve its sorting accuracy.

• 한국정보처리학회:학술대회논문집
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• 한국정보처리학회 2013년도 춘계학술발표대회
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• pp.215-218
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• 2013

In this paper, we proposed a method for enhancement of color images with sky regions. The input image is converted into HSV space and then sky and non-sky regions are separated. For sky region, saturation enhancement is performed for each pixel based on the enhancement factor calculated from the average saturation of its local neighborhood. On the other hand, for the non-sky region, the enhancement is applied only on the luminance value (V) component of the HSV color image, which is performed in two steps. The luminance enhancement, which is also called as dynamic range compression, is carried out using nonlinear transfer function. Again, each pixel is further enhanced for the adjustment of the image contrast depending upon the center pixel and its neighborhood pixel values. At last, the original H and V component image and enhanced S component image for the sky region, and original H and S component image and enhanced V component image for the non-sky region are converted back to RGB image.

• 한국콘텐츠학회논문지
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• 제15권6호
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• pp.91-103
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• 2015

본 연구는 중국인의 한국 TV드라마 시청이 한국 상품 소비에 따른 만족감과 한국의 긍정적 국가 이미지 형성에 어떠한 영향을 주는지를 탐구하였다. 특히 한국 TV드라마가 한국의 국가 이미지에 직접적인 영향을 주는지 아니면 한국 상품 소비와 같은 다른 요인을 통해 간접적으로 영향을 미치는지를 분석하였다. 본 연구는 중국 상하이에 거주는 현지인 10대에서 50대 이상 현지인 105명을 대상으로 면대면 설문조사하여 이를 분석에 사용하였다. 연구결과, 첫째 중국인의 한국 TV드라마 시청은 한국 상품 이용만족에 정(+)적 영향을 미쳤다. 둘째 중국인의 한국 TV드라마 시청은 한국의 긍정적 국가 이미지 형성에 직접적으로 유의미한 영향을 주지는 않았다. 셋째, 중국인의 한국 상품 이용만족은 한국의 긍정적 국가 이미지 형성에 정(+)적 영향을 미쳤다. 넷째, 중국인의 한국 TV드라마 시청은 한국 상품 이용만족을 매개로 한국의 긍정적 국가 이미지 형성에 간접적으로 정(+)적 영향을 미치는 것으로 나타났다. 끝으로 본 연구의 이론적 현실적 함의를 논의하였다.

• Journal of the Optical Society of Korea
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• 제18권6호
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• pp.706-713
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• 2014

An enhanced 360-degree integral-floating three-dimensional display system using a hexagonal lens array and a hidden point removal operator is proposed. Only the visible points of the chosen three-dimensional point cloud model are detected by the hidden point removal operator for each rotating step of the anamorphic optics system, and elemental image arrays are generated for the detected visible points from the corresponding viewpoint. Each elemental image of the elemental image array is generated by a hexagonal grid, due to being captured through a hexagonal lens array. The hidden point removal operator eliminates the overlap problem of points in front and behind, and the hexagonal lens array captures the elemental image arrays with more accurate approximation, so in the end the quality of the displayed image is improved. In an experiment, an anamorphic-optics-system-based 360-degree integral-floating display with improved image quality is demonstrated.

• 한국의상디자인학회지
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• 제18권2호
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• pp.79-92
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• 2016

The purpose of this study was to examine the effect of Indonesian's Korean national image and product evaluation on purchase intension of Korean fashion products. The survey was carried out on November, 2014 through online. And the subjects of this study were living in Indonesia. The results of this study were as follows. First, in Indonesia customers showed favorable attitudes towards Korean national image and the assessment of Korean fashion products. Also their purchase intension of products was comparatively high. The customers who purchased more Korean fashion products were more likely to have high purchase intension of them. Second, among the three factors of Korean national image, the advancement and national character had positive influence on the intrinsic attributes of Korean fashion products. Also, the product competitiveness and national character had positive effect on the extrinsic attributes. Third, the product competitiveness and extrinsic attributes had positive influence on the purchase intension on them. In conclusion, Korean national image affects evaluation and purchase intension of Korean fashion products. It is necessary to improve Korea national image within Indonesia fashion market. And it will be a good way of marketing to promote product power of Korea fashion product to Indonesian.

• 한국멀티미디어학회논문지
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• 제24권4호
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• pp.558-568
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• 2021

The digital image to be accepted as legal evidence, it is important to verify the authentication of the digital image. This study proposes a method of authenticating digital images through three steps of comparing the file structure of digital images taken with iPhone, analyzing the encoding information as well as media logs of the iPhone storing the digital images. For the experiment, digital image samples were acquired from nine iPhones through a camera application built into the iPhone. And the characteristics of file structure and media log were compared between digital images generated on the iPhone and digital images edited through a variety of image editing tools. As a result of examining those registered during the digital image creation process, it was confirmed that differences from the original characteristics occurred in file structure and media logs when manipulating digital images on the iPhone, and digital images take with the iPhone. In this way, it shows that it can prove its forensic authentication in iPhone.

• Journal of the Optical Society of Korea
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• 제4권1호
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• pp.19-22
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• 2000

A new image encoding and identification scheme is proposed for security verification by us-ing a CGH(computer generated hologram), random phase mask, and a correlation technique. The encrypted image, which is attached to the security product, is made by multiplying a QP- CGH(quadratic phase CGI) with a random phase function. The random phase function plays a key role when the encrypted image is decrypted. The encrypted image can be optically recovered by a 2-f imaging system and automatically verified for personal identification by a 4-f correlation system. Simulation results show the proposed method can be used for both the reconstruction of an original image and the recognition of an encrypted image.

• 패션비즈니스
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• 제20권1호
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• pp.115-126
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• 2016

Today the Olympics are considered representative of a culture that symbolizes the country's image and cultural specificity, and important colors act as effective means of Olympics marketing. Each color is unique to the natural environment and cultural heritage is one of the languages of each country, region or community and it symbolizes. Hence, the purpose of this study was to examine the color and to view the color image displayed on Olympic uniforms based on the national color sensibility. After analyzing the color image of the Olympic athletes, including six kinds of uniforms and operational personnel, a cool casual/casual image is created more frequently, followed by a modern, gorgeous, dynamic, elegant/chic, dandy/classic image. The uniform color is consistent with the national image and the theme of the Pyeongchang Olympics is to enhance the country's competitiveness by widely promoting the national image of Korea around the world. Furthermore, it is necessary to provide the empirical basis for creating the 2018 Pyeongchang Winter Olympic uniforms.