OSLO-IC: On-the-Sphere Learned Omnidirectional Image Compression with Attention Modules and Spatial Context

Wawerek-López P, Mahmoudian Bidgoli N, Fossard P, Kaup A, Maugey T (2025)

Publication Language: English

Publication Type: Conference contribution

Publication year: 2025

Publisher: IEEE

City/Town: New York City

Pages Range: 1-5

Event location: Hyderabad IN

URI: https://ieeexplore.ieee.org/document/10889131

DOI: 10.1109/ICASSP49660.2025.10889131

Open Access Link: https://arxiv.org/abs/2503.13119

Abstract

Developing effective 360-degree (spherical) image compression techniques is crucial for technologies like virtual reality and automated driving. This paper advances the state-of-the-art in on-the-sphere learning (OSLO) for omnidirectional image compression framework by proposing spherical attention modules, residual blocks, and a spatial autoregressive context model. These improvements achieve a 23.1% bit rate reduction in terms of WS-PSNR BD rate. Additionally, we introduce a spherical transposed convolution operator for upsampling, which reduces trainable parameters by a factor of four compared to the pixel shuffling used in the OSLO framework, while maintaining similar compression performance. Therefore, in total, our proposed method offers significant rate savings with a smaller architecture and can be applied to any spherical convolutional application.

Authors with CRIS profile

Paul Wawerek-López Lehrstuhl für Multimediakommunikation und Signalverarbeitung (LMS) Andre Kaup Lehrstuhl für Multimediakommunikation und Signalverarbeitung (LMS)

Involved external institutions

École Polytechnique Fédérale de Lausanne (EPFL) CH Switzerland (CH) Trimble Inc US United States (USA) (US) INRIA Rennes - Bretagne Atlantique FR France (FR)

How to cite

APA:

Wawerek-López, P., Mahmoudian Bidgoli, N., Fossard, P., Kaup, A., & Maugey, T. (2025). OSLO-IC: On-the-Sphere Learned Omnidirectional Image Compression with Attention Modules and Spatial Context. In Proceedings of the ICASSP 2025 - 2025 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP) (pp. 1-5). Hyderabad, IN.

MLA:

Wawerek-López, Paul, et al. "OSLO-IC: On-the-Sphere Learned Omnidirectional Image Compression with Attention Modules and Spatial Context." Proceedings of the ICASSP 2025 - 2025 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), Hyderabad 2025. 1-5.

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