• Journal of the Optical Society of Korea
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• v.6 no.4
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• pp.156-160
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• 2002

In this paper, we propose an improved optical security system using three phase-encoded images and the principle of interference. This optical system based on a Mach-Zehnder interferometer consists of one phase-encoded virtual image to be encrypted and two phase-encoded images, en-crypting image and decrypting image, where every pixel in the three images has a phase value of '0'and'$\pi$'. The proposed encryption is performed by the multiplication of an encrypting image and a phase-encoded virtual image which dose not contain any information from the decrypted im-age. Therefore, even if the unauthorized users steal and analyze the encrypted image, they cannot reconstruct the required image. This virtual image protects the original image from counterfeiting and unauthorized access. The decryption of the original image is simply performed by interfering between a reference wave and a direct pixel-to-pixel mapping image of the en crypted image with a decrypting image. Computer simulations confirmed the effectiveness of the proposed optical technique for optical security applications.

• Journal of the Korean Society of Costume
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• v.62 no.7
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• pp.29-40
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• 2012

Using the official marker of the Korea's national symbol to inform the world of the country's existence to the global community in the $21^{st}$century enhances the autonomy and the competitiveness of Korea. It is thought that selecting a motif for promoting the national identity through cultural products or costumes can prepare an opportunity for gaining competitiveness internationally. The purpose of this study is to enhance understanding on the use of a traditional Korean symbol, Mugunghwa, and how it increases the cultural value of Korea, and develops the modern Korean image. The specific contents of this study are as follow. First, searching for the scope of usage of the national flower Mugunghwa from various angles for enhancing the Korean image. Second, developing a national symbol image of modern sense that reflects trend by using Mugunghwa. Third, clarifying the application scope and role of the national symbol image using Mugunghwa, and present a specific usage plan for creating more value. As for the study method, the study is conducted through theoretical and empirical research and six pieces of work of modern Mugunghwa image are presented as the result. Based on the development of the image of Mugunghwa as a national symbol, this study proposed a role of a cultural ambassador by applying Mugunghwa to fashion products or costumes. As for the expected effect, it can provide an opportunity for developing another national symbol and a new perspective on national symbol will appear. It is thought that the cultural value of a national symbol can be understood through this study and it can provide an opportunity for developing various national symbols for enhancing the national image.

• Proceedings of the IEEK Conference
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• 2008.06a
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• pp.845-846
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• 2008

Multi-scaled retinex algorithm is generally used to enhance the local contrast and remove the illuminant component. However, if the chromatic distribution of an original image is not uniform and dominated by a certain chromaticity, the chromaticity of resulting image depends on the dominant chromaticity of the original image, thereby inducing the color distortion. In this paper, a modified multi-scaled retinex method to reduce the influence of the dominant chromaticity in the image is proposed using a average chromaticity of original image and global illuminant chromaticity. In addition, to compensate saturation, the chroma value of the resulting image is enhanced based on that of the original image in the CIELAB space.

• Korean Journal of Human Ecology
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• v.20 no.5
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• pp.1025-1034
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• 2011

The purpose of this study was to examine the evaluation of fabric characteristics on the drapability, texture image and preference of blouse fabrics, and to analyze the effects of the texture image, objective and subjective drapability on the preference. As specimen, silk and polyester fabrics were collected. 52 female subjects evaluated 16 specimens with semantic differential scale of 18 fabric image and 20 sensibility. Data were analyzed through factor analysis, pearson correlational coefficient using spss win 12.0. For the evaluation, structural characteristics such as fiber contents, weave type, weight and thickness were analyzed. The results were as follows: The evaluation results of objective and subjective drapability showed differences. Sensory image factors of blouse fabrics were 'surface smoothness', 'elasticity', 'weight' and 'flexibility'. Sensibility image factors were 'elegance', 'classic', 'characteristic' and 'mannish'. 'Elegance', 'classic' and 'characteristic' of sensibility images showed high correlation with 'surface smoothness' and 'elasticity' of sensory image, also 'mannish' of sensibility image showed significant correlation with 'weight' of sensory image. The significant fabric characteristics affecting objective drapability were density, weight, thickness. The significant texture image factors affecting objective drapability were 'weight', 'flexibility' of sensory image and 'elegance' of sensibility image. On the other hand, the significant factors affecting subjective drapability were thickness of fabric characteristics and 'elegance', 'characteristic', 'mannish' of sensibility images. 'Elegance', 'characteristic' and 'classic' of sensibility image, 'elasticity' of sensory image and subjective drapability affected on the purchase preference.

• Journal of Biosystems Engineering
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• v.28 no.5
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• pp.439-448
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• 2003

An image processing algorithm was developed for a robot system which was used in gene study. The robot system achieved a job of colony picking. The colony included DNA of an organism. The robot picked up the colony in petri-dish, which included the cultivated colony in medium, by a picking pin, and moved the colony to wellplates. The vision system consisted of an image acquisition system which acquired the image information of colony, an illumination device which irradiated the object once when it got the image of it, a computer and so on. The image processing algorithm distinguished the colony and detected colony positions. Performance test of the developed algorithm showed that the distinguishing success rate of colony and detecting success rate of colony positions were over 96%.

• Journal of the Korea Safety Management & Science
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• v.13 no.3
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• pp.169-174
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• 2011

The purpose of this study was to clarify the impact of national and corporate brand image of Korea on chinese consumers' purchasing Intention, also the impact of China on korean consumers' purchasing Intention. And the second aim of the research is to provide Korean businessmen who are interested in chinese market with information about chinese consumers' purchasing behaviour. Data from 205 chinese and korean consumers were analysed. As the result of analyses, it was found that Korean country image positive affects corporate brand image(samsung) and Chinese country image negative affects corporate brand image(haier) and product image. Korean corporate brand image only affects product image on chinese consumers. The product image affects Korean and Chinese consumer's purchasing intention.

• Journal of Korean Library and Information Science Society
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• v.38 no.1
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• pp.89-106
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• 2007

This is to present the information and direction about color scheme image and adjective image in designing web page, by analysing the color image of our country's National University library's web page which is being operated now. The analysis method is to find the RGB of objective site through color emotion standard and to abstract the color chip. It is divided by color scheme image and adjective image. The scope of research is 41 National University libraries registered in National University Libraries Association. The result is that white and grey color of background and colors like light blue and green are main. In case of adjective image, nimble image and clear image was many. next is orderly bellowing image. and elegant image.

• Journal of the Optical Society of Korea
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• v.16 no.1
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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.

• Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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• 2003.08a
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• pp.76-80
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• 2003

Recently as new digital media like High Definition Television (HDTV) have been made popularization. However In case of image quality characteristics of AC PDP, the problem especially raised is 'image sticking' phenomenon, the phenomenon that the previously displayed pattern still remains after the image in realizing high picture quality. In this paper, Image sticking Phenomena observed in AC PDP are defined and classified, these effects are analyzed as luminance, color purity through chromaticity diagram and firing voltage state using light waveform.

• Research in Community and Public Health Nursing
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• v.13 no.2
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• pp.376-386
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• 2002

Objectives: The purpose of this study was to investigate factors influencing the smoking behavior of adolescents, in order to provide basic data to develop a future nursing intervention program for smoking prevention. Methods: The study subjects were 162 adolescents attending high schools, who were living in K city. The instruments included the Self Esteem Scale translated by Jeon (1974), beliefs about the social rule scale developed by the Committee for Adolescence Guidance (1988), differential peer association developed by Krohn et. al. (1982), perceived behavioral control scale developed by Hanson (1997), intention of smoking scale developed by Newman et. al.(1982), and self-efficacy scale developed by Sherer et. al. (1982). The data were analyzed using descriptive statistics, Pearson correlation coefficient, and stepwise multiple regression. Results: 1. The smoking behaviors of the subjects were significantly correlated with beliefs about social rule, perceived behavioral control. differential peer association, intention of smoking, self efficacy, grade, father's level of education, monthly pocket money, time of onset for smoking, degree of alcoholic intake, and drug abuse. 2. The multiple regression analysis revealed the most powerful predictor for smoking behavior was time of onset for smoking. A combination of beliefs about social rule, perceived behavioral control, grade, differential peer association, and intention of smoking accounted for 54.0% of the variance for smoking behavior in adolescents. Conclusion: It is recommended that these influencing factors for smoking behavior be considered when developing future nursing intervention programs for the antismoking behaviors of adolescents.