광상관기에 적용 가능한 2-채널 컴퓨터 생성 홀로그램 = Two-channel computer-generated holograms for optical correlator

다국어 초록 (Multilingual Abstract)

A more efficient method for encoding detour phase computer generated hologram(CGH) that reconstructs two objects simultaneously is suggested. This was done without increasing the mask spatial resolution or size. This encoding algorithm can be utilized for a matched filter in an optical correlator. In this research, we compared two type computer generated holograms and expanded that two type hologram to two channel hologram. One is Pixel-oriented hologram and the other is Detour-phase hologram. In the Pixel-oriented hologram, quantization method was used direct binary quantization. We compared two hologram patterns and we were able to find that Pixel-oriented CGH pattern is more effective than Detour phase hologram. The two holograms were adapted 128×128 image.

목차 (Table of Contents)

• 제1장. 서론 = 1
• 1.1 컴퓨터 생성 홀로그램 = 1
• 1.2 샘플링 이론 = 8
• 1.3 컴퓨터 생성 홀로그램 제작 과정 = 12
• 1.4 진폭절단과 랜덤위상 문제 = 15
• 1.4.1 진폭절단 = 15
• 1.4.2 랜덤위상 = 16
• 제2장. Pixel oriented 컴퓨터 생성 홀로그램 = 18
• 2.1 Pixel oriented CGH의 이론 = 18
• 2.2 양자화 알고리즘 = 20
• 2.3 직접 양자화 방법 = 20
• 제3장. Detour phase hologram = 24
• 3.1 Detour phase hologram의 이론 = 24
• 제4장. 2-채널 컴퓨터-생성 홀로그램 = 30
• 4.1 2-채널 컴퓨터 생성 홀로그램의 이론 = 30
• 제5장. 실험 결과 = 37
• 5.1 Pixel oriented CGH = 37
• 5.1.1 진폭형과 위상형 홀로그램의 에러분석과 비교 = 39
• 5.2 Detour phase hologram = 41
• 5.3 2-채널 커퓨터 생성 홀로그램 = 43
• 5.3.1 pixel oriented 방식 = 43
• 5.3.2 Detour phase 방식 = 45
• 제6장. 결론 = 48
• [참고문헌] = 50