전자공학회논문지D (Journal of the Korean Institute of Telematics and Electronics D)
- 제34D권8호
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- Pages.62-70
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- 1997
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- 1226-5845(pISSN)
실시간 입체 영상 디스플레이를 위한 3차원 공간정합 필터의 합성
Synthesis of 3-D spatial matched filter for real-time 3-D image display
초록
In this paper, we presetn a new method to display 3-D image modelled as a sum of 2-D sliced images by expanding the concept of the conventional 2-D optical correlator based on spatial matched filtr to the 3-D region. It is hsown that a arbitrary image can be constructed by an array of the correlation-peaks between pixel-to-pixel and propose the systhesis precedure of 3-D spatial-matched-fjilter using fresnel diffraction equation to display 3-D image in space. It is also shown that the quantization problem is severe when the systehsised filter function is displayed on the conventional LC-SLM. To overcome this problem, anonlinear quantizaton method using the sigmoid function is suggested, and this method can reduce the bias and the loss of high spatial-frequency information, and improve the diffraction efficiency. Finally, the suggested method is tested by computer simulation and then approved by some optical experiments with the conventional LC-SLM.
키워드