한국광학회:학술대회논문집 (Proceedings of the Optical Society of Korea Conference)
- 한국광학회 2000년도 하계학술발표회
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- Pages.126-127
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- 2000
시각 암호와 간섭계를 이용한 광 암호화
Optical Encryption based on Visual Cryptography and Interferometry
초록
In this paper, we proposed an optical encryption method based in the concept of visual cryptography and interferometry. In our method a secret binary image was divided into two sub-images and they were encrypted by 'XOR' operation with a random key mask. Finally each encrypted image was changed into phase mask. By interference of these two phase masks the original image was obtained. Compared with general visual encryption method, this optical method had good signal-to-noise ratio due to no need to generate sub-pixels like visual encryption.
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