Angularly continuous light‐field format: Concept, implementation, and evaluation

In this paper, we present the concept, the implementation, and the evaluation of our novel angularly continuous light‐field format. We compared the subjective visual performance of our format with the perspective camera format through a series of subjective and objective tests. In our extensive subj...

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Bibliographic Details
Published in:Journal of the Society for Information Display 2019-07, Vol.27 (7), p.442-461
Main Authors: Cserkaszky, Aron, Kara, Peter A., Tamboli, Roopak R., Barsi, Attila, Martini, Maria G., Bokor, Laszlo, Balogh, Tibor
Format: Article
Language:English
Subjects:
angular resolution
Compression tests
Format
light‐field format
light‐field visualization
objective quality assessment
Optimization
perceived quality
Quality assessment
Visual perception
Visual stimuli
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Summary:In this paper, we present the concept, the implementation, and the evaluation of our novel angularly continuous light‐field format. We compared the subjective visual performance of our format with the perspective camera format through a series of subjective and objective tests. In our extensive subjective study, we used multiple absolute and comparative rating scales and various visual stimuli with different contents and angular resolutions. The perceived quality was assessed by a total of 36 test participants, who were separated based on their scientific expertise. The objective quality was evaluated through the degradations caused by three well‐known compression methods. The obtained results indicate that our light‐field format may outperform the conventional format, and it generally can provide at least equivalent visual quality. Furthermore, these findings open the way for data size optimization, without compromising the achieved level of perceived quality. We present the angularly continuous light‐field format that enables light‐field streaming between arbitrary light‐field camera and display systems. The paper describes the format along with our implementation. The evaluation of the format, with objective and subjective studies with both expert and naive participants, found that it performs better or on par with existing camera image based formats.
ISSN:1071-0922
1938-3657
DOI:10.1002/jsid.762