Abstract
Many researchers have investigated optical imaging through diffusive media or scattering media. Wide variety of techniques to reconstruct complex amplitude of an object trough diffusive glass or thin scattering media has been reported [1-5]. Among them, digital holography enables reconstruction of intensity and phase images of objects through a diffusive glass plate [6]. In Ref. 6, object light and light from diffusive glass are treated as independent wave. We proposed reconstruction of phase and intensity information of an object behind diffusive glass by digital holography [7,8]. Our method measured transmittance and phase of diffusive glass in advance. By a known complex amplitude of diffusive glass, complex amplitude of an object through diffusive glass is reconstructed by digital correction of the transmittance and phase change of diffusive glass. The object intensity and phase at an arbitrary distance can be reconstructed by optical back propagation. In this paper, we investigated reconstruction of complex amplitude of an object through diffusive glass by changing the distance between an object and diffusive glass / between ad diffusive glass and a camera.
Published Version
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