버추얼 프로덕션에서 스크린 모아레 현상을 통제하기 위한 LED 패턴 제거기법
LED Pattern Removal Techniques for Controlling Screen Moiré Phenomenon in Virtual Production
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참고문헌
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초록
The purpose of this study is to find the possibility of moiré phenomenon by analyzing optical cues before photographing in LED-based virtual production. The Moiré phenomenon is the interference fringe created by the periodic pattern of the camera sensor and the LED screen. Therefore, this phenomenon can be avoided by blurring LED Screen patterns through optical adjustment. To this end, the analysisable optical variables were set as 'Focus Length', 'F number', 'Circle of Confusion', 'Subject Distance', 'LED Screen Distance', 'LED Pitch', and 'Sensor Vertical Size of Camera'. In addition, a calculation formula was created to obtain the diffusion ratio of LEDs on the sensor surface. Based on the diffusion ratio of 590%, it was set as the reference point for the moiré phenomenon. Since this comes out differently for each lens and distance, an FR value that can be easily distinguished based on 1 was presented. Finally, this calculation formula was applied to real LED screen photography to verify its effectiveness.
Abstract
The purpose of this study is to find the possibility of moiré phenomenon by analyzing optical cues before photographing in LED-based virtual production. The Moiré phenomenon is the interference fringe created by the periodic pattern of the camera sensor and the LED screen. Therefore, this phenomenon can be avoided by blurring LED Screen patterns through optical adjustment. To this end, the analysisable optical variables were set as 'Focus Length', 'F number', 'Circle of Confusion', 'Subject Distance', 'LED Screen Distance', 'LED Pitch', and 'Sensor Vertical Size of Camera'. In addition, a calculation formula was created to obtain the diffusion ratio of LEDs on the sensor surface. Based on the diffusion ratio of 590%, it was set as the reference point for the moiré phenomenon. Since this comes out differently for each lens and distance, an FR value that can be easily distinguished based on 1 was presented. Finally, this calculation formula was applied to real LED screen photography to verify its effectiveness.
참고문헌 (7)
- A. Wood, "Intangible spaces : Three-dimensional technology in Hugo and IMAX in The Dark Knight", The International Journal of Research Into New Media Technologies, 21(2), pp.169~181 (2015)
- 이도훈, "버추얼 프로덕션과 강화된 시각효과 : <만달로리안> 시리즈에 대한 사례분석을 중심으로", 디지털콘텐츠학회논문지, 23(7), pp.1191~1203 (2022), 한국디지털콘텐츠학회[DOI]
- 이동호, "버추얼 프로덕션 기술을 활용한 제작 기술 동향 연구 -시각특수효과 영화 중심으로-", 영상기술연구, 1(31), pp.61~78 (2019), 한국영상제작기술학회[DOI]
- M. Sawicki, "Filming the Fantastic with Virtual Technology: Filmmaking on the Digital Backlot" (2020), Routledge
- 유미, "가상 제작의 개념과 해외 제작 사례 분석", 애니메이션연구, 17(1), pp.98~113 (2021), 한국애니메이션학회[DOI]
- S. Prince, "Digital Visual Effects in Cinema: The Seduction of Reality" (2011), Rutgers University
- Y. C. Park, "The Principle and Applications of Moire Phenomenon", Journal of Korean Sorciety of Precision Engineering, 17(6) (2000)