View-flipping effect reduction and reconstruction visualization enhancement for EPISM based holographic stereogram with optimized hogel size

Abstract

To reduce the view-flipping effect and enhance the viewing resolution, the modulation characteristics of the hogel based holographic stereogram is constructed and validated. The performance of the view-flipping effect is analyzed, and the results indicate that decreasing the size of hogel is beneficial to the reduction of the view flipping, however, which will result in significant diffraction effect which can degrade the reconstruction quality. Furthermore, a diffraction-limited imaging model of the hogel based holographic stereogram is established, where both the limited aperture of the hogel and the defocused aberration of the object point are introduced, and the effective resolvable size of the reconstructed image point is simulated. The theory shows that there is an optimal hogel size existed for the certain depth of scene. Both the numerical and optical experiments are implemented, and the results are well agreed with the theoretical prediction, which demonstrates that the view-flipping reduction and reconstruction visualization enhancement for EPISM based holographic stereogram can be achieved when the proper size of hogel is utilized.

P‐7.8: Characteristic analysis on special‐shaped pupil of holographic stereogram

“…Helseth compared the optical transfer function (OTF) of rectangular hogel and Gaussian hogel, and theoretical analysis showed that Gaussian hogel has better transmittance to light waves with smaller spatial frequencies 12 . Our group modeled the imaging process of holographic stereogram, and obtained a calculation method to obtain the optimal size solution of hogel under specific printing system parameters by analyzing the influencing factors of perspective jump and resolution from the perspectives of geometric optics and wave optics 13 . However, although the method of optimizing the size of hogel proposed by our research group effectively improves the resolution of the holographic stereogram, it still has some shortcomings.…”