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http://dx.doi.org/10.5909/JBE.2016.21.5.749

A Study on the Mode of Address and Meaning Creation of Underlight in Broadcasting Lighting  

Kim, Young-Jin (KBS)
Park, Gooman (Dept. of Electronics IT Media Engineering, Seoul National University of Science and Technology)
Publication Information
Journal of Broadcast Engineering / v.21, no.5, 2016 , pp. 749-759 More about this Journal
Abstract
As image contents in broadcasting have been created in HDTVs and monitors have been commercialized, facial expression of objects in broadcasting lighting has become a very significant task. Figure modeling of objects in HDTVs requires smoother and cleaner video images owing to the expansion of precision of image expression by light. Lighting methods that enlighten characters in the digital generation have come to require a new change. Character modeling methods used on expression features of underlight are receiving attention for aesthetic expression of figures in HD images. Accordingly, the influence of underlight light source intensity, distance, and size on character modeling characteristics was experimentally measured and comparatively analyzed. The experiment results show that good results can be obtained only when the intensity is 17%∼25.5% in contrast to total brightness, distance is beyond 40cm, and the size is at least 20cm, to exhibit the optimum effect of underlight. This data will become material with high usage to gain smoother and cleaner images of characters in future high-quality images.
Keywords
Underlight; Underlight light intensity; Underlight light distance; Underlight light size;
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