Improving Light Field Camera Sample Design With Irregularity and Aberration

Conventional camera designs usually shun sample irregularities and lens aberrations. We demonstrate that such irregularities and aberrations, when properly applied, can improve the quality and usability of Light Field cameras. Examples include spherical aberrations for the mainlens, and misaligned sampling patterns for the microlens and photosensor elements. These observations are a natural consequence of a key difference between conventional and Light Field cameras: optimizing for a single captured 2D image versus a range of reprojected 2D images from a captured 4D Light Field. We propose designs in mainlens aberrations and microlens/photosensor sample patterns, and evaluate them through simulated measurements and captured results with our hardware prototype.

View Academic Paper:

Li-Yi Wei, Chia-Kai Liang, Graham Myhre, Colvin Pitts and Kurt Akeley, Improving Light Field Camera Sample Design With Irregularity and Aberration, ACM Transactions on Graphics (Proceedings of SIGGRAPH), Volume 34 Issue 4, 2015.

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Lytro is building the world’s most powerful Light Field imaging platform enabling artists, scientists and innovators to pursue their goals with an unprecedented level of freedom and control.

1 Comment

  1. This well-composed Living Picture from Lytro allows the viewer to interactively change the point of focus of the image from close to far, or alter aperture settings to change depth of field, or even click and drag on an image to shift perspective within the image. All these benefits come from recomputing the image based on the angular path of the light rays within the Light Field.

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