디스플레이 소자 평면에서부터 육안으로 관찰 가능한 입체영상 영역까지의 물리적인 거리 조절을 바탕으로 공간상에서 재현될 수 있는 3차원 영상에 대한 기대감은 다양한 형태의 디지털 홀로그래픽 디스플레이를 개발하는 주요한 요인이 되어 왔다. 공간 광 변조기의 픽셀 크기에 의존하는 디지털 홀로그램 영상의 시야각과 픽셀 수에 의존하는 홀로그램영상 크기로 인한 제약 사항들을 극복하는 방법을 토대로 다수의 시청자가 동일한 3차원 영상을 관찰할 수 있는 홀로그래픽 디스플레이에 대한 연구가 나타나기 시작하였다. 본 고에서는 테이블 형태의 공간상에서 관찰 가능한 디지털 홀로그램 기술에 관한 연구 동향을 소개하고자 한다.
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