A locally content-dependent filter for inter-perspective anti-aliasing

Mårten Sjöström; Sylvain Tourancheau; Xusheng Wang; Roger Olsson

doi:10.1117/12.908627

30 January 2012 A locally content-dependent filter for inter-perspective anti-aliasing

Mårten Sjöström, Sylvain Tourancheau, Xusheng Wang, Roger Olsson

Proceedings Volume 8290, Three-Dimensional Image Processing (3DIP) and Applications II; 829006 (2012) https://doi.org/10.1117/12.908627
Event: IS&T/SPIE Electronic Imaging, 2012, Burlingame, California, United States

Abstract

Presentations on multiview and lightfield displays have become increasingly popular. The restricted number of views implies an unsmooth transition between views if objects with sharp edges are far from the display plane. The phenomenon is explained by inter-perspective aliasing. This is undesirable in applications where a correct perception of the scene is required, such as in science and medicine. Anti-aliasing filters have been proposed in the literature, and are defined according to the minimum and maximum depth present in the scene. We suggest a method that subdivides the ray-space and adjusts the anti-aliasing filter to the scene contents locally. We further propose new filter kernels based on the ray space frequency domain that assures no aliasing, yet keeping maximum information unaltered. The proposed method outperforms filters of earlier works. Different filter kernels are compared. Details of the output are sharper using a proposed filter kernel, which also preserves the most information.

Citation Download Citation

Mårten Sjöström, Sylvain Tourancheau, Xusheng Wang, and Roger Olsson "A locally content-dependent filter for inter-perspective anti-aliasing", Proc. SPIE 8290, Three-Dimensional Image Processing (3DIP) and Applications II, 829006 (30 January 2012); https://doi.org/10.1117/12.908627

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KEYWORDS

Optical filters

Image filtering

Diamond

Image quality

3D displays

3D image processing

Digital filtering

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