# Analysis of the noise in back-projection light field acquisition and its optimization

## TL;DR

This paper analyzes defocus noise and depth resolution issues in focal plane sweeping light field reconstruction and proposes a method to enhance image quality and depth accuracy, verified through numerical and experimental results.

## Contribution

The paper introduces a novel approach to reduce defocus noise and improve depth resolution in focal plane sweeping light field reconstruction.

## Key findings

- Reduced defocus noise in reconstructed light fields.
- Enhanced depth resolution demonstrated through experiments.
- Numerical simulations confirm the effectiveness of the proposed method.

## Abstract

Light field reconstruction from images captured by focal plane sweeping can achieve high lateral resolution comparable to the modern camera sensor. This is impossible for the conventional micro-lenslet based light field capture systems. However, the severe defocus noise and the low depth resolution limit its applications. In this paper, we analyze the defocus noise and the depth resolution in the focal plane sweeping based light field reconstruction technique, and propose a method to reduce the defocus noise and improve the depth resolution. Both numerical and experimental results verify the proposed method.