• Journal of Digital Contents Society
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• v.6 no.3
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• pp.185-188
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• 2005

In this paper, we propose a device to track the location of illegal reproduction and monitor illegal reproduction by testing with digital watermark in order to protect copyright of digital contents and prevent massive distribution through illegal reproduction.

• Korean journal of communication and information
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• v.49
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• pp.5-19
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• 2010

The purpose of this paper is to disclose the characteristics of knowledge in the age of digital reproduction. To achieve this I extended Benjamin's concept of technological reproduction to three different stages as mechanical reproduction, electric reproduction and digital reproduction. Each stage has different degree of reproducibility and de-materialization. I also combined McLuhan's concept of the electricity at the point of de-materialization with reproducibility. The degree of materiality and reproducibility is the key concept which could scale the technical condition of knowledge production. The social condition of knowledge reproduction is controlled by economic and political factors. In this connection between technological and social condition the current knowledge production and intellectual property could be explained properly. This study could open the theoretical door to deepen such an understanding.

• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2009.01a
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• pp.508-511
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• 2009

The infringement of the copyright is a problem by the distribution of digital contents copied illegally. The digital watermark is expected as a thing preventing unjust copying by burying information in digital data such as image, animation, the sound, TV, radio and movies. [1] [2]But a noise is included in a digital watermark reproduction image. So there is the case that the certification of the reproduction image has difficulty with. If a computer cannot recognize the information reproduced from digital watermarking, the information does not have a meaning. This paper aimed at improvement of the proof of a digital-watermarking reproduction image. And it is verified whether the difference of the form of a character affects the degree of correlation.

• Journal of Conservation Science
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• v.38 no.2
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• pp.154-165
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• 2022

The color appearance of cultural heritage are essential factors for manufacturing technique interpretation, conservation treatment usage, and condition monitoring. Therefore, this study systematically established color reproduction procedures based on the digital color management system for the portrait of Gwon Eungsu. Moreover, various application strategies for recording and conserving the cultural heritage were proposed. Overall color reproduction processes were conducted in the following order: photography condition setting, standard color measurements, digital photography, color correction, and color space creation. Therefore, compared with the color appearance, the digital image applied to a camera maker profile indicated an average color difference of 𝜟10.1. However, the digital reproduction result based on the color management system exhibits an average color difference of 𝜟1.1, which is close to the color appearance. This means that although digital photography conditions are optimized, recording the color appearance is difficult when relying on the correction algorithm developed by the camera maker. Therefore, the digital color reproduction of cultural heritage is required through color correction and color space creation based on the raw digital image, which is a crucial process for documenting the color appearance. Additionally, the recording of color appearance through digital color reproduction is important for condition evaluation, conservation treatment, and restoration of cultural heritage. Furthermore, standard data of imaging analysis are available for discoloration monitoring.

• Journal of the Korean Graphic Arts Communication Society
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• v.24 no.1
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• pp.23-34
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• 2006

Color reproduction is one of the most important expression factors in digital printing. In this paper, an experiment was done where the characteristics of color reproduction in digital printing. The results could summarized as follows. The printing used device profile showed a color difference of less than printing used default value in digital printing. As a result of weighting color difference, a difference between color gamut of digital original and color gamut of printing, when transforming the RGB color space to CMY color space, a exclusion the gray revision. The solution is to optimize the color transformation by gamut mapping and gray revision.

• Proceedings of the Korea Contents Association Conference
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• 2003.05a
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• pp.160-164
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• 2003

Broadcasting environment of present our country is greeting period of transition that undergo a change to digital broadcasting system in analog broadcasting system continued for last several decades. With change of these broadcasting environment interest about various digital broadcasting contents industry that fill to digital broadcasting infra and unlawfulness reproduction prevention technology far digital broadcasting contents of high added value is rising. According as is converted to digital broadcasting environment interest about reproduction prevention is well-founded to be risen sensitively. First analog broadcasting environment can not remove perfectly error at transmission in receiver, but can reconstruct contents such as original by error correction function in receiver in the case of digital broadcasting environment. Secondarily, although quality of copy is dwindled than original repeat reproduction in case of analog, many copies are available innumerably regardless of number of times of copy keeping quality such as original in the case of digital And third element is possible easily to anyone to on-line along with development of internet in case of digital contents unlike analog. Under these background, this thesis wish to design and implement digital contents protection system to prevent unlawfulness reproduction and distribution of digital contents using Triple DES algorithm.

• 한국정보디스플레이학회:학술대회논문집
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• 2009.10a
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• pp.1554-1556
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• 2009

In this paper, we propose a system to adjust specific color of image. The HSV of R/Y/G/C/B/M regions can be modified individually. The color reproduction can be preferred color, true color, or stander color for customer requirement.

• KSII Transactions on Internet and Information Systems (TIIS)
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• v.5 no.11
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• pp.2160-2174
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• 2011

In this paper, a new technique for color reproduction based on color variation characteristics of digital camera under a dim light condition is proposed. Generally, photographers should adjust a camera exposure properly for obtaining an image with real color tone of subjects. Thus, in case of taking a picture under a dim light condition, the exposure time of a camera has to be relatively longer than the one under a bright light condition. Although images with real color tone of the subject are obtained, the images may get blurred due to the shaky hands of photographer holding the camera. In order to avoid the blur effect, an input image is captured from a camera set as a short exposure time under a dim light condition. Then we propose a method to reproduce color tone of the dim input image. To this end, color variation characteristics which represent color variations of a digital camera are first extracted by analyzing the Macbeth color checker images taken under various exposure values. Then, a color reproduction is performed by an estimation based on the color variation characteristics. Experimental results have shown that the proposed method has achieved better performance of color reproduction, compared with existing methods.

• Journal of Korean Library and Information Science Society
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• v.33 no.3
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• pp.327-358
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• 2002

The study has Proceeded through examining and analyzing related laws and articles on library exemption relating to reproduction and transmission in digital environment. First of all, the study investigates and analyzes in detail the changes and characteristics of the regulation of library exemption in WCT, EU, U.S., Japan, and Australia. After analyzing of the article 28 in current Copyright Act and amended proposal for Copyright Act in Korea, it found the regulation to be inadequate. As a result of the legal analysis, this paper is proposing a revised plan of the article 28 in the Copyright Act of Korea.

• Journal of Digital Convergence
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• v.8 no.4
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• pp.47-57
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• 2010

The purpose of this study is to suggest the effective alternative plan of the human resource training in the new reproduction energy industry, here in Gwang-Ju area. Nowadays, we, Korea is confronted with great changing moment to reform the developmental model in social situation & economical paradigms. Based on the aspect, the study showed that how suitable place to carry out the aims in Gwangju area ; first, the good equipped natural environment for activating is apt to build the new reproduction energy industry. And next, the good skilled human resource training is to get into the newly industry. According, the various policy of educating manpower for activating new reproduction energy industry need to be driven in short and long term.