• ETRI Journal
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• 제38권5호
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• pp.858-867
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• 2016

A high dynamic range (HDR) video service is an upcoming issue in the broadcasting industry. For compatibility with legacy devices receiving a non-constant luminance (NCL) signal, new tools supporting an HDR video service are required. The current pre-processing chain of HDR video can produce color noise owing to the chroma component down-sampling process for video encoding. Although a luma adjustment method has been proposed to solve this problem, some disadvantages still remain. In this paper, we present an adaptive color noise reduction method for an NCL signal of an HDR video service. The proposed method adjusts the luma component of an NCL signal adaptively according to the information of the luma component from a constant luminance signal and the level of color saturation. Experiment results show that the color noise problem is resolved by applying our proposed method. In addition, the speed of the pre-processing is increased more than two-fold compared to a previous method.

• 한국컴퓨터정보학회논문지
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• 제27권8호
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• pp.111-121
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• 2022

본 연구는 정부 차원에서 미국 정부를 상대로 방송주권의 문제를 사상 처음으로 제기했던 사례라고 평가할 수 있는, 1977년 AFKN-TV의 컬러 방송 개시를 둘러싼 한미 간의 교섭과정에 대한 역사적 사실을 규명하는 데 그 목적이 있다. 보다 구체적으로는 국가기록원과 외교사료관에 소장된 아카이브 문서에 대한 문헌연구를 통해, 한미 간의 교섭과정을 세 국면으로 나누어 각 국면별로 양국 정부의 주장과 인식, 조치 등을 살펴봄으로써 양국 간에 벌어졌던 갈등의 양상을 살펴보았다. 연구결과, 1977년 초 AFKN-TV의 일방적인 컬러 방송 실시를 둘러싸고 벌어졌던 미국 정부와의 교섭과 그 교섭과정에서 나타난 양국 간의 갈등은 AFKN방송을 새롭게 주권의 관점에서 바라보게 하는 계기였고, 이러한 1970년대 말 한국 정부의 방송주권에 대한 의지는 역사적 유산으로 이어져 1980년대에 다시 미국 정부를 겨냥하게 되었다.

• 한국의류산업학회지
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• 제14권2호
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• pp.165-172
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• 2012

The purpose of this study was to examine and analyze broadcasting station's image expressed in wearing dress color of male and female news anchors. The data were collected from replay video news(n=180) provided in each station's website during 2005-2010 year. The results were as follows. First, in the case of the male anchor, KBS was focused on the quiet and classic image and the gentle image. MBC was focused on the vital and urban image. SBS was focused on the dynamic and young image. Second, in the case of the female anchor, KBS was focused on the neat, soft, and feminine in S/S season, on the other hand the loud and flamboyant image in F/W season. MBC was focused on the vital and urban image like image of a male anchor. SBS was focused on the private image of a female anchor than broadcasting station's image. Through the results of this study, the image of the individual and companies can be symbolized by the color of dress.

• 한국인터넷방송통신학회논문지
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• 제22권4호
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• pp.9-16
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• 2022

본 연구는 게임디자이너의 색채인식에 대한 현황을 파악하고자 실무디자이너 대상으로 색채활용에 대한 설문을 실시하고 산업내에서의 인식정도는 선행연구를 통해 살펴보았다. 색채활용인식은 측정이 가능한 정량분석으로 타당성을 확인하였다. 설문 결과는 1위 디지털색채, 2위 색채조화, 3위 색채지각, 4위 색혼합, 5위 색채심리, 6위 색이름 으로 분석되었다. 이 결과 게임산업을 위한 실무 중심의 색채에 대한 재교육의 필요성과 게임관련 학과의 색채 교육에서 1~4위의 색채분야는 집중적인 교육이 이루어져야 할 것으로 보인다. 이번 연구가 향후 게임 산업의 디자이너 양성을 위한 색채 교육 연구의 기초자료로 활용되기를 기대한다.

• 복식문화연구
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• 제18권6호
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• pp.1194-1210
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• 2010

The influence of digital media according to environmental change of multi-media came to have significance more than what we imagine. In accordance with high resolution of HDTV in digital media era, the cautious awareness is required for skin color by the immediate color such as replica of TV color, lighting and clothing. As for the broadcasting makeup expression technique caused by a change in broadcasting environment in the digital media era, the first, There is necessity for natural makeup technique, and for expressing the whole makeup evenly and very delicately. The makeup work gets much more delicate. For the delicate expression, more time is being required than the existing makeup time. Second, Lots of time and manpower are required for elaborate real-object processing on all the production fields such as background set, stage properties, and makeup. Third, Realistic expression is available on the screen. Importance of basic makeup is highlighted. Thus, even the skin care shop came to be prevalent. Development in only HD cosmetics is needed for foundation with fine particle in new material and with diverse colors hereafter. The video-media field is a method that is ignored a sense of distance through vehicles such as camera, picture tube, and several kinds of broadcasting machinery and equipment and that is delivered vividly to viewers through screen, unlike the stage makeup, thereby being needed the makeup technology proper for HDTV according to the changing broadcasting environment and media. The video machinery and equipment are proceeding with being gradually high-tech and precise. Thus, an expert in makeup needs to know common sense on the video machinery and equipment before makeup, and needs to make an effort according to it. And, a follow-up research can be said to be necessary on the advance in makeup method and on more diverse dedicated cosmetics along with a research on color tone proper for HDTV.

• International Journal of Internet, Broadcasting and Communication
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• 제7권2호
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• pp.9-15
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• 2015

Various studies with regard to increasing the optical efficiency of plasmonic color filters have previously been conducted, such as mixing materials or applying diverse pattern shapes. Fundamentally, it is important to maximize the photonic crystal effect by finding the optimum periods of lattice as well as calculating the most efficient transmission area. In this study, we propose a technical method for optimizing the plasmonic color filters that have a high color gamut and luminance by analyzing the light spectrums based on the 1931 color coordinate system. Moreover, we suggest a calculation method in order to define the individual color purity of red and green and blue filters. Consequently, efficiency values are obtained independently from each color filter by evaluating the color purity and the luminance. The final result obtained from simulation are 27.6% of relative luminance and 25.3% of color gamut. The proposed optimization method is applicable to all plasmonic color filters having photonic crystal arrays.

• ETRI Journal
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• 제26권3호
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• pp.195-202
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• 2004

In this paper, we propose a visual accessibility technique in an MPEG-21 framework. In particular, MPEG-21 visual accessibility for the colored-visual resource of a digital item is proposed to give better accessibility of color information to people with color vision deficiency (CVD). We propose an adaptation system for CVD as well as a description of CVD in MPEG-21. To verify the usefulness of the proposed method, computer simulations with CVD and color adaptation were performed. Furthermore, a statistical experiment was performed using volunteers with CVD in order to verify the effectiveness of the proposed visual accessibility technique in MPEG-21. Both the experimental and simulation results show that the proposed adaptations technique can provide better color information, particularly to people with CVD.

• 한국컴퓨터정보학회논문지
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• 제21권9호
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• pp.157-163
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• 2016

In this paper, I had studied to focus on the NCS(National Competency Standard) course in the development process of NCS-based curriculum and designed and developed 'Digital Color Correction' course. 'Digital Color Correction' course was come up with in process of development of NCS-based curriculum in a department of university that aims to educate video-broadcasting experts who lead the advanced digital age. The course developed in this paper follows criteria of NCS and is designed to step in course-profile, instruction and evaluation. Also I made an analysis of learning effects after applying to class. And I compared and analyzed NCS-class and non NCS-class. As a result of comparison, NCS-class is better than non NCS-class in student attitude for learning and evaluation method.

• International Journal of Internet, Broadcasting and Communication
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• 제14권1호
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• pp.116-121
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• 2022

In this paper, we propose a highly secure watermarking technique in which the watermark is multi-encrypted using the R, G, and B component pixels of color image, and then the multi-encrypted watermark is hidden in the LSB of the color image pixel. According to the technique proposed in this paper, the quality of the stego-image created by hiding the multi-encrypted watermark in the LSB of the color image is so excellent that the difference from the cover image cannot be recognized. Also, it is possible to extract the original watermark from the stego-image without loss. If the watermark is hidden in the image using the proposed technique, the security of the watermark is maintained very well because the watermark hidden in the stego-image is multi-encrypted. The proposed watermarking technique can be used in the applications such as military and intellectual property protection requiring high security.

• 한국인터넷방송통신학회논문지
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• 제11권4호
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• pp.223-229
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• 2011

본 연구에서는 방송 촬영용 LED Spot 조명기기를 두 가지 형태로 개발하여, 현재 방송용 스튜디오 조명기기가 설치되어 있는 공간에서 다수 사용되고 있는 영국의 Arri사 650W와 1000W Fresnel Spot 조명기기와 조도, 색온도, 연색성 등의 비교 데이터 측정과 피사체의 촬영 시 영상 및 연색성에 따른 색상을 비교 측정하였다. 그리고 방송 촬영용으로 LED Spot 조명기기가 대체 가능한지를 판단하기 위하여 성능평가분석 하였다. 실험평가에서 할로겐 조명기기의 대체용으로 LED Spot 조명기기의 가능성을 확인하였다.