Horizontally scanning holography can enlarge both screen size and viewing zone angle. A microelectromechanical-system spatial light modulator, which can generate only binary images, is used to generate hologram patterns. Thus, techniques to improve gray-scale representation in reconstructed images should be developed. In this study, the error diffusion technique was used for the binarization of holograms. When the Floyd–Steinberg error diffusion coefficients were used, gray-scale representation was improved. However, the linearity in the gray-scale representation was not satisfactory. We proposed the use of a correction table and showed that the linearity was greatly improved.
© 2014 Optical Society of America
Original Manuscript: March 28, 2014
Revised Manuscript: May 1, 2014
Manuscript Accepted: May 2, 2014
Published: June 4, 2014
Yuji Matsumoto and Yasuhiro Takaki, "Improvement of gray-scale representation of horizontally scanning holographic display using error diffusion," Opt. Lett. 39, 3433-3436 (2014)