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Computational Scattering Imaging (Ghost Imaging) System
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Technical Data
The principle of scattering imaging based on spatial light modulator (SLM) is to use SLM to replace the rotating ground glass in the traditional scattering imaging experiment to realize the preparation of pseudothermal light field, and can also be used for the generation of objects. The SLM is used to artificially control the illumination light field, and the light intensity distribution reflected from the SLM received by the CCD of the surface detector can be calculated according to the scalar diffraction theory, which not only saves the reference optical path, but also simplifies the calculation to a certain extent, so as to optimize the scattering imaging system.
Computational scattering imaging (ghost imaging) system
System Functions:
(1) The effect of classical correlation imaging can be simulated: the control of the light field by the spatial light modulator can be realized through this system, and the image signal data can be obtained through experiments, so as to calculate the imaging effect;
(2) The statistical optical model of ghost imaging can be expanded in various forms, and the statistical optical model of classical thermo-optical/pseudo-thermal-optical ghost imaging and spatial light modulator ghost imaging can be established, and then the image of the object can be reproduced theoretically from the correlation function of light intensity fluctuation;
(3) The software can directly communicate with the CCD (COMS) camera and the oscilloscope (the barrel detector signal is collected through the oscilloscope), and the pictures collected by the CCD camera and the oscilloscope acquisition signal can be stored and processed; It also has the function of exporting the collected data;
(4) The software has the function of automatic generation of random speckle map, which can load the random speckle map to SLM; The number of speckle maps can be set, and the image resolution can be adjusted;
(5) The externally designed algorithm image can be imported into the software and loaded onto the SLM;
(6) The software has the function of correlation (reconstruction) calculation, which can associate the picture collected by the CCD camera with the signal collected by the oscilloscope, so as to calculate (reconstruct) the image of the object.
Test Results:
Applications:Instructional demonstrations, target detection, optical encryption, light field coherence measurement, biomedical, military target analysis, etc.
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