Image-Quality Enhancement for a Holographic Wavefront Color Printer by Adaptive SLM Partitioning

Sunghee Hong, Elena Stoykova, Hoonjong Kang, Youngmin Kim, Jisoo Hong, Joosup Park, Kiheon Park
2015 Journal of the Optical Society of Korea  
The wavefront printer records a volume-reflection hologram as a two-dimensional array of elemental holograms from computer-generated holograms (CGHs) displayed on a spatial light modulator (SLM). The wavefront coming from the object is extracted by filtering in the spatial-frequency domain. This paper presents a method to improve color reproduction in a wavefront printer with spatial division of exposures at primary colors, by adaptive partitioning of the SLM in accordance with the color
more » ... encoded in the input CGHs, and by the controllable change of exposure times for the recording of primary colors. The method is verified with a color wavefront printer with demagnification of the object beam. The quality of reconstruction achieved by the proposed method proves its efficiency in eliminating the stripe artifacts that are superimposed on reconstructed images in conventional mosaic recording.
doi:10.3807/josk.2015.19.1.029 fatcat:twejaj7pqfezpgaqxb5btoq6de