• 디지털융복합연구
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• 제16권12호
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• pp.283-292
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• 2018

우리나라가 세계 최초로 상용화한 초고화질의 UHD 방송기술과 UHD 기반 파노라마 영상기술인 UWV는 이용자의 실재감을 극대화하는 대표적인 실감영상 기술이다. 본 연구는 UHD와 UWV에 대한 이용자들의 주관적 반응을 다각도로 비교 분석함으로써 UWV의 영상품질을 체계적으로 평가하는 것을 목적으로 한다. 이를 위해 화면크기(4k x 2k, 8k x 2k)와 콘텐츠유형(스포츠영상, 풍경영상, 공연영상)에 따른 대화면 프로젝션 실험을 설계하고 UHD와 UWV에 대한 이용자의 주관적 영상품질 평가 및 만족도를 측정하였다. 연구결과, 주관적 영상품질과 만족도의 모든 항목에 있어서 UHD에 비해 UWV에 대한 이용자의 평가가 긍정적인 것으로 나타났으며, 세부 평가는 영상 콘텐츠유형에 따라 유의한 차이를 보였다. 연구결과를 바탕으로 UWV 파노라마 기술이 발전 및 상용화되는데 필요한 점들과 후속 연구 시 고려해야할 사항을 제언하였다.

• 동굴
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• 제4호
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• pp.41-50
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• 1996

The coastal plains of the Puna and Ka' u Districts of the island of Hawaii are a contradiction to the popular view that the island of Hawaii is a tropical rain forest or a vegetated landscape with abundant water sour This section of the island lies in the rain shadow of Mauna Loa a Kilauea Volcanoes and receives less than 30 inches of annual precipita When rain does come. it is in the form of sudden down pours. givi residents of the area little time to collect and conserve water. Due to porous nature of the rock. there is no standing surface water. In spite of these harsh climatic conditions. archeological evidence indic that an extensive agriculture complex existed not only along the coast. into the most remote parts of what is called the Ka'u Desert. Pass through these agricultural areas are historic and pre - historic t systems. These trail systems apparently played a significant suppor role for exchange between the ahupua's (classic land divisions of Haw and the geopolitical districts. The question arises as to how could vast agricultural complexes a heavy foot travel over miles of arid land exist without dependable wa sources\ulcorner While planting - pits and mounds were designed to make most efficient use of available water and conserve moisture(Carter 19 9). people involved in planting also needed potable water for surv Most publications and research papers dealing with the early population this area make only oblique reference to springs and wells which t populations depended upon. The Federal Cave Resource Protection Act(1988) has served as imprtus for the National Park Service to look closer at the lava tu caves and fault cracks within Hawaii Volcanoes National Park. P visitors to these underground areas found large volumes of standing wa in fault cracks. and abundant drip areas with the lava tubes. Re observes noted that in most cases. where the cracks and caves we located in the arid sections of the park. there has been extens modifiacation or utilization of these water sources by the early Hawaii and others. The variety of western containers used for collection indica that these water sources were used during historic times. William E described similar water sources in his narrative of his trip around island in 1823(Eills 1979), This report is directed at documenting recent observations and a stimulating further research into early Hawaiian water collection syst It also explores the implications that power and political influence of e chiefs in the arid portions of Hawaii could have been linked to the con of the water resources.