Abstract:

Automultiscopic screens present different images depending on the viewing direction. This enables glasses-free 3D and provides motion parallax effect. However, due to the limited angular resolution of such displays, they suffer from hot-spotting, i.e., image quality is highly affected by the viewing position. In this paper, we analyze light fields produced by lenticular and parallax-barrier displays, and show that, unlike in real world, the light fields produced by such screens have a repetitive structure. This induces visual artifacts in the form of view discontinuities, depth reversals, and excessive disparities when viewing position is not optimal. Although the problem has been always considered as inherent to the technology, we demonstrate that light fields reproduced on automultiscopic displays have enough degrees of freedom to improve the visual quality. We propose a new technique that modifies light fields using global and local shears followed by stitching to make them smooth when displayed on a screen. We show that this improves visual quality significantly, which is demonstrated in a series of user experiments with an automultiscopic display as well as lenticular prints.

Materials for download:

Related publications:

	Joint View Expansion and Filtering for Automultiscopic 3D Displays Piotr Didyk, Pitchaya Sitthi-Amorn, William T. Freeman, Frédo Durand, Wojciech Matusik ACM Transactions on Graphics 32(6) (Proceedings SIGGRAPH Asia 2013, Hong Kong). Paper Video BibTeX Project Page
	Adaptive Image-space Stereo View Synthesis Piotr Didyk, Tobias Ritschel, Elmar Eisemann, Karol Myszkowski, Hans-Peter Seidel Proceedings of Vision, Modeling and Visualization Workshop, 15-17 November 2010, Siegen, Germany. Paper Video BibTeX Project Page

Citation:

Song-Pei Du, Piotr Didyk, Frédo Durand, Shi-Min Hu, Wojciech Matusik
Improving Visual Quality of View Transitions in Automultiscopic Displays
ACM Transactions on Graphics 33(6) (Proceedings SIGGRAPH Asia 2014, Shenzhen, China), 2014

  @article{DuDDHM2013,
    author = { Song-Pei Du and
               Piotr Didyk and
	       Fr{\'e}do Durand and
               Shi-Min Hu and
	       Wojciech Matusik
	     },
    title     = {Improving Visual Quality of View Transitions in Automultiscopic Displays},
    journal   = {ACM Transactions on Graphics (Proceedings SIGGRAPH Asia 2014, Shenzhen, China)},
    year      = {2014},
    volume    = {33},
    number    = {6}
  }