Improvement of image quality by intensity compensation based on temporal multiplexing in a binary phase-only holographic display.

Abstract

A holographic display is a promising visual technology that provides intuitive and natural image observation. Particularly, a binary phase-only holographic display has the capability of high-speed switching, enabling the realization of a high-frame-rate holographic display. However, the reconstructed image quality is extremely low due to noise caused by the lack of amplitude information, hologram binarization, and speckle. To solve the problem of the image quality, temporal multiplexing of multiple reconstructed images due to the persistence of vision can be used. In this paper, an intensity compensation method based on temporal multiplexing is proposed, which efficiently reduces the noise in the reconstructed images. To achieve this reduction, multiple holograms are generated according to the residuals between the reconstructed images and the desired object. Numerical simulations and optical experiments confirm that the accumulated image quality efficiently improves by the proposed method.