The invention discloses a video surveillance anti-counterfeit
watermark real-time shooting hiding device and a detection method. The video surveillance anti-counterfeit
watermark real-time shooting hiding device specifically comprises an
imaging lens set, an e-index double random
phase modulation watermark mask, a monitoring camera CCD and the like. The device comprises two implementation structures; one structure is a curing structure formed in the mode that the watermark
mask is glued to the surface of a CCD
glass cover plate; the other structure is a replaceable and adjustable structure formed in the mode that the transmission
mask is not fixed in a glued mode.
Watermark physical hiding is achieved in the mode that the e-index double random
phase modulation transmission type watermark mask is used for modulating the strength of an
optical image, and the device only comprises an imaging
optical path and is very simple. The watermark digital detection method of the device is achieved in the mode that a random
phase diagram generating the watermark mask performs
demodulation and includes the process of obtaining the logarithm of the image and the process of performing Fourier transformation on pure-phase functions.