학술논문

Real-Time Light Field Signal Processing Using 4D/5D Linear Digital Filter FPGA Circuits
Document Type
Periodical
Source
IEEE Transactions on Circuits and Systems II: Express Briefs IEEE Trans. Circuits Syst. II Circuits and Systems II: Express Briefs, IEEE Transactions on. 68(7):2735-2741 Jul, 2021
Subject
Components, Circuits, Devices and Systems
Real-time systems
Finite impulse response filters
Light fields
Field programmable gate arrays
Videos
Manganese
Signal processing algorithms
light field videos
multi-dimensional filters
real-time processing
FPGA
Language
ISSN
1549-7747
1558-3791
Abstract
Light fields (LFs) and light field videos (LFVs) capture both angular and spatial variation of light rays emanating from scenes. This richness of information leads to novel applications such as post-capture refocusing, depth estimation and depth-velocity filtering which are not possible with images and videos. These capabilities come, however, with a significant increase in data to be processed. In order to fully exploit opportunities provided by LFs and LFVs, low-complexity signal processing algorithms that process LF and LFV data in real-time are required. In this brief, we survey such state-of-the-art algorithms, in particular for depth filtering, refocusing and denoising of LFs and depth-velcoty filtering for LFVs, and future directions for these real-time LF an LFV processing algorithms.