Processing of the Retinal Artery Image using Higher Orders of Two Beam Interference

Abstract

The coherent illumination is assumed in the fabrication of the interferometer fringes modulated by the considered image. The modulated fringes resulted from the multiplication of the ordinary fringe system and the retinal arterial image. Digital cascaded two-beam interference using feedback rays is considered to give a cosine function of higher order n greater than one (n > 1). The processing of the retinal artery image for normal and occlusion arteries is investigated using digital two-beam interference of higher orders. Five segments from the retinal arteries are considered. The higher order power of two-beam interference is compared with the ordinary two and multiple-beam interference. The refractive index distribution of the retinal artery is extracted from the fringe shift that occurred in the artery.