Color image encryption system and encryption and decryption method based on compression holography
A color image and encryption system technology, applied in the direction of instruments, etc., can solve problems such as limiting the encryption efficiency of color images, and achieve the effect of improving encryption efficiency and confidentiality
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[0040] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0041] Image encryption systems based on holography such as figure 1 As shown, it includes: a laser 1, a first mirror 2, a beam expander system 3, a collimator lens 4, a beam splitter 5, a beam splitter 6, a beam splitter 7, a fourth spatial light modulator 8, a first space Light modulator 9, first random phase plate 10, second spatial light modulator 11, second random phase plate 12, third spatial light modulator 13, third random phase plate 14, second mirror 15, beam splitter device 16, beam splitter 17, beam splitter 18, high-speed image acquisition device 19.
[0042]After being reflected by the first mirror 2, the light emitted by the laser 1 becomes parallel light after passing through the beam expander system 3 and the collimating lens 4, and is divided into four beams by the beam splitters 5, 6 and 7: three beams After successively pa...
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