Research methods for comparison of reconstructed by a hologram projector Fresnel images

摘要

The implementation of modeling and research for image comparison methods is necessary for subsequent quality assessment of structures reconstructed with Fresnel hologram projectors, it will allow to select the optimal parameters of the optical circuit and the level of binarization of the hologram. The purpose of the paper is to research the comparison methods for planar images reconstructed with Fresnel hologram projectors with the original object. In this work, the methods of pixel-by-pixel comparison of images and methods of comparing images by histogram are considered. As a numerical criterion for the methods of pixel-by-pixel comparison, the RMS value was chosen. The smaller the RMS value, the more the restored image is similar to the original object. When considering the comparison of methods for image histograms were reviewed by comparing the histograms: correlation method, chi-square method, intersection method, the Bhattacharya distance method. For work, two experiments were performed, during which the most optimal binarization threshold was determined for planar images reconstructed with Fresnel hologram projectors, by comparing them with the original object. In the future, it is planned to implement a correlation comparison of images and compare images in the presence of defects: blur and possible artifacts of different nature.