• Journal of Digital Contents Society
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• v.8 no.4
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• pp.531-539
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• 2007

An advance in digital technologies and an introduction of HDTV contents production systems have made innovative changes in a TV broadcasting program and video production environment. The role of HD contents production experts is particularly getting more important to have a competitiveness in digital video production. It is necessary to develop a professional training and reeducation program that is based upon the perception of production experts. In this paper, we ed the perception of video production professionals and analyzed their requirements. With a DACUM job analysis method, 9 job duties and 71 tasks were retrieved to establish a research model. Then the performing frequency, importance, and difficulty in video editor's duties were analyzed and discussed.

• The Journal of the Korea Contents Association
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• v.9 no.9
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• pp.51-59
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• 2009

A watermarking for copyright protection of digital contents for broadcasting have to be made for a real-time system. In this paper, we propose a real-time video watermarking system which is hardware-based watermarking system of SD/HD (standard definition/high definition) video with the STRATIX FPGA device from ALTERA. There was little visual artifact due to watermarking in subjective quality evaluation between the original video and the watermarked one in our experiment. Embedded watermark was extracted after robustness testscalled natural video attacks such as A/D (analog/digital) conversion. Our implemented watermarking hardware system can be useful in movie production and broadcasting companies that requires real-time contents protection systems.

• The Journal of the Korea Contents Association
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• v.12 no.5
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• pp.81-90
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• 2012

Since the Canon EOS 5D Mark II with which the Full HD video shooting is possible was launched in 2008, the utilization of the DSLR cameras has been increasing in the video production field. In this thesis, the shortages and advantages of the video functions that the 5D Mark II cameras have will be analysed and they will be compared with the RED cameras that are most widely used in the video production field today. Through this, the utilization of the DSLR camera in the film production field will be investigated. The DSLR camera has the advantage of having good clear picture since it uses the image sensor of big size, and of being able to utilize the various lenses of good quality, and is small in size and light in weight compared to the conventional HD cameras. Although, there are some limitations that there are parts to be improved such as the sound recording problems and development of various additional equipments, the excellent usage that the DLSR cameras have is presenting a new possibility for the film production.

• Proceedings of the Korea Information Processing Society Conference
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• 2008.11a
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• pp.121-124
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• 2008

2000 년대 들어 방송통신융합의 흐름에 따라 등장한 IT 기반의 Non Linear 제작공정은 2005 년까지 IMX-50, DV25/50 포맷 등 50Mbps 급 이하의 동영상 Data 를 중심으로 영상 콘텐츠 제작을 위해 부분적인 프로그램 장르에 국한하여 구축, 운용되어 왔다. 최근 초고속 네트워크를 통해 대용량의 고해상도 영상데이터를 안정적으로 수용 처리하는, 상대적으로 저렴하면서 효과적인 기능을 보유한 컴퓨터 기술 기반 단위 Application 들이 등장함에 따라 고해상도 프로그램 제작을 지향하는 Contents 생산기지들을 중심으로 IT 기반 제작공정으로의 전환과 차세대 제작시스템으로 HD 급 NPS 구축 필요성이 대두되었다. 본 논문에서는 IT 기반의 방송 시스템 구축의 단초로서 최초로 HD 급 대용량 구축모델의 프로토 타입을 설계하고 발전 로드맵을 분석, 최적화를 위한 방안을 제시한다.

• The Journal of the Korea Contents Association
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• v.10 no.5
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• pp.115-123
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• 2010

Because of development of information technology, moving picture can run various platforms. We should consider and apply users' attitude as well as production technique because convergence between mobile and media technology may be increased full-browsing service using mobile device. Previous research related to production technique in various platforms only focus on video quality and adjustment of screen size. However, besides of technical side, production techniques should be changed such as image production as well as image editing by point of view aesthetic. Mise-en-scene such as camera angle, composition, and lighting is changed due to HD image. Also image production should be changed to a suitable full-browsing service using mobile device. Therefore, we would explore a new suitable production techniques and image editing for smart phone. To propose production techniques for smart phone, we used E-learning production system, which are transition, editing technique for suitable converting system. Such as new attempts are leading to new paradigm and establishing their position by applying characteries such as openness, timeliness to mobile. Also it can be extended individual area and established as expression and play tool.

• Asian-Australasian Journal of Animal Sciences
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• v.32 no.10
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• pp.1621-1629
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• 2019

Objective: The objective of this study was to evaluate the physicochemical, sensory and taste characteristics of commercial, frozen, dry, and wet aged Hanwoo sirloin. Methods: Grade 2 sirloin from 6 Hanwoo steers (about 30 months old) were obtained after 5 days postmortem. Samples were assigned to four groups which were commercial beef (CON, control group), frozen beef (Hanwoo frozen, HF; 40 days in $-18^{\circ}C$ freezer), wet-aged beef (Hanwoo wet-aging, HW; 21 days), and dry-aged beef (Hanwoo dry-aging, HD; 40 days). HW and HD were stored in a $80%{\pm}5%$ relative humidity cooler at $1^{\circ}C$. Results: The HF group showed a significantly higher cooking loss and expressible drip with significantly higher pH compared to other groups. In addition, protein and fat contents in the HD group were higher than those in other groups (p<0.05). The shear forces in the HW and HD groups were significantly lower than those in the CON group. The HD group had significantly higher omega-3 and polyunsaturated fatty acids compared with other groups. Glutamic acid levels in the HD group were significantly higher compared with those in other groups. Electronic tongue analysis revealed that sourness of the HD group was lower than that of other groups, whereas the HD group showed significantly higher umami, richness, and saltiness compared to other groups (p<0.05). Sensory test results revealed that the HW group had significantly higher tenderness, while the HD group had significantly higher chewiness, juiciness, and overall acceptability scores. Conclusion: These results suggest that both wet- and dry-aging treatments can effectively improve sensory characteristics, and dry-aging was much more useful to enhance umami tastes and meat quality of 2 grade Hanwoo sirloins.

• Journal of the Institute of Convergence Signal Processing
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• v.10 no.2
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• pp.100-105
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• 2009

A watermarking for copyright protection of digital contents for broadcasting have to be made for a real-time system. In this paper, we propose a real-time video watermarking chip and system which is hardware based watermark embedding system of SD/HD video. Our chip is implemented by FPGA which is STRATIX device from ALTERA, and our system is implemented by GS1560A and GS1532 devices from GENNUM for HD/SD video signal processing. There was little visual artifact due to watermarking in subjective quality evaluation between the original video and the watermarked one. Embedded watermark was all extracted after a robustness test called natural video attacks such as A/D conversion and MPEG compression. Our implemented watermarking hardware system can be useful in movie production and broadcasting companies that requires real-time based copyright protection system.

• The Journal of the Korea Contents Association
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• v.7 no.12
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• pp.95-104
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• 2007

As the broadcasting system rapidly migrates to the HD contents production, a broadcasting professional training program has increasingly requested, which provides a professional ability keeping up with new demands and a systematic well-organized education program. This paper utilized a DACUM(developing a curriculum) method for a video editor's job analysis and presented a job model of video editing. With a DACUM job analysis, we retrieved 9 essential job duties and 71 tasks, and then examined their importance, difficulty, frequency, and entry level tasks that are required before job hire. We also established a well-form structure of the job analysis results, completed a DACUM research chart, and consequently built a video editor's job model in TV broadcasting and video production areas. The proposed model is expected to be used as a fundamental material for a future job organization of video editors in TV broadcasting and video production areas, a development of the educational curriculum, and a priority decision of on-the-job training programs.

• Asian-Australasian Journal of Animal Sciences
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• v.18 no.12
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• pp.1715-1720
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• 2005

Two promising varieties of forage sorghum viz. HD-15 and J. Sel-10 were identified for their higher forage yield (350-400 quintals per hectare) compared to traditional/existing variety, HC-136 at Indian Grassland and Fodder Research Institute, Jhansi. Silage of these three forage sorghum varieties viz., HD-15, J.Sel-10 and HC-136 were prepared in three concrete silos for their nutritional evaluation in sheep. Twelve adult Muzaffarnagari Ewes, divided into three equal groups of 4 each, were offered a particular variety of sorghum silage ad libitum over a period of 30 days followed by a 6 day metabolism trial and a collection of rumen liquor and blood samples. The HD-15 variety of forage sorghum silage contained higher crude protein (CP) than both the J.Sel-10 and HC-136. Average daily dry matter (DM) intake (% of live weight) differed significantly (p<0.05) in sheep that were fed the different varieties of silage, with the maximum amount in HD-15 (2.55) followed by J.Sel-10 (2.49) and HC-136 (1.84). The average apparent digestibility of all the nutrients was low in the sheep that were fed the HC-136 variety of sorghum silage when compared to both HD-15 and J.Sel-10. However, digestibility of organic matter (p<0.05) and crude protein (p<0.01) was significantly low in the HC-136 variety. The average daily nitrogen retention was-0.19, 2.15 and 0.42 g in HC-136, HD-15 and J.Sel-10, respectively which differed significantly (p<0.01). The average digestible crude protein and total digestible nutrient (TDN) contents (%) of the silage varieties were higher in HD-15 (3.14 and 55.3) than HC-136 (0.25 and 58.6) and J.Sel-10 (1.58 and 55.3) varieties. On comparing to the maintenance requirements (ICAR, 1985) for dry matter, crude protein and total digestible nutrients, both the improved varieties (HD-15 and J.Sel-10) almost met the requirements except crude protein, which met only 73.3% of the requirement by J.Sel-10, while the HC-136 variety was unable to meet the requirements. The average rumen pH and total volatile fatty acids concentrations were comparable among the groups. However, concentrations of nitrogen metabolites were higher in the animals fed the HD-15 variety of silage. Varieties of sorghum silage also did not have any influence on the concentration of the blood metabolites. It was concluded that the HD-15 variety of sorghum silage was nutritionally superior to both J.Sel-10 and HC-136 silage.

• Journal of Digital Contents Society
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• v.15 no.3
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• pp.425-432
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• 2014

4K high speed camera shooting enables shooting of fast subjects in Full HD 4 times resolution without motion blur due to increase in resolution and shutter speed. However, this shooting incurs several limitations including focus, intensity of radiation and increase in data quantity. As lack of intensity of radiation may occur due to increased shutter speed, it is shoot by opening aperture and limitation in focusing follows. In addition, there is limitation in shooting records since it has restriction in storage due to increased resolution and frame rate. In this regard, this study aims to analyze the limitations shown above through production case of 4K high speed camera (Phantom Flex 4K) and to design effective workflow to overcome this.