\chapter{Conclusion}
\label{chap:conclusion}
The main contribution of this thesis is a novel light field rendering method.
The method outperforms the state-of-the-art methods that are analyzed in the thesis.
The conducted research addresses the most crucial issues in light field rendering.
A scientific hypothesis was presented, and its experimental proof showed that the proposed method for light field rendering outperforms existing approaches and solves the related issues.
Additional contributions regarding the quality of rendering on 3D displays are described, as they are closely related to light fields.

The methods proposed in this thesis can be used to utilize light fields in modern industry.
The rendering method allows for high-quality and real-time synthesis of a novel view from discrete light field images.
Research regarding light field compression leads to the proposal of an optimal encoding and streaming scheme for light fields. 
It solves the excessive memory and bandwidth requirements of light field rendering methods.
\hyperref[hypothesis]{Hypothesis} of this thesis stated that a fast and high-quality light field rendering method can be proposed.
The main presented proposal focuses on optimal GPU utilization, which makes the method faster than the state of the art.
The method is designed to exploit massive parallelism that allows it to densely scan the input data to find the best focus distance for each resulting pixel.
This ensures mitigation of standard light field rendering out-of-focus ghosting artifacts.
\hyperref[hypothesis]{Hypothesis} was experimentally proved as valid.

3D displays are currently not mainstream displaying technology due to various limitations such as input views alignment and a single focus distance.
The proposed methods lead to automation of tasks necessary for comfortable usage of 3D displays.
The methods can detect potentially good scenes from an arbitrary sequence of images or a video or detect the optimal focus level.
The user study also reveals an important limitation of this technology regarding the deviation of the input data from the officially recommended guidelines.

Most of the research included in this thesis has been accepted by the scientific community, peer-reviewed, and published.
The materials described in this thesis lead to a complete and usable light field rendering approach which can be utilized in industrial solutions.
They can also be used as a solid basis for further research.

Future work will cover efficient compression of the 2D light field grid in the time domain. 
The optimal position of the I-frame can ensure a fast light field video playback.
Light field rendering designed for the standard data format in a grid was concluded in this thesis.
Arbitrary-positioned light field views are a topic for future research.
Both optimal rendering of synthetic views and acquisition method are to be explored in depth.
A comparison of several 3D viewing devices will be performed to measure the ability of users to perceive various kinds of rendering or capturing artifacts in the scene.
