Device for detecting moisture content of panax notoginseng slices through near infrared holography

The utility model discloses a device for detecting the moisture content of panax notoginseng slices through near-infrared holography, and belongs to the field of near-infrared holography application.The device comprises the following steps of: designing an infrared holographic detection light path, shooting a reflective infrared hologram on a pseudo-ginseng slice, selecting an infrared laser of which the infrared wavelength is 1.94 microns and which is easily absorbed by water, an infrared laser of which the central wavelength is 1.8 microns and which is not absorbed by water as a detection light source, and a HeNe laser of which the central wavelength is 632.8 nm as a guide detection light source; an original image is reproduced for a shot infrared hologram by using MATLAB programming, and subtraction is carried out by using two infrared holograms shot with different wavelengths, so that information containing moisture content can be obtained; the moisture content of panax notoginseng slices can be rapidly a