Papers › Panoramic Vision Transformer for Saliency Detection in 360° Videos

Panoramic Vision Transformer for Saliency Detection in 360° Videos

19 Sep 2022arXiv:2209.08956archive 2025-07-28

Heeseung Yun, Sehun Lee, Gunhee Kim

360° video saliency detection is one of the challenging benchmarks for 360° video understanding since non-negligible distortion and discontinuity occur in the projection of any format of 360° videos, and capture-worthy viewpoint in the omnidirectional sphere is ambiguous by nature. We present a new framework named Panoramic Vision Transformer (PAVER). We design the encoder using Vision Transformer with deformable convolution, which enables us not only to plug pretrained models from normal videos into our architecture without additional modules or finetuning but also to perform geometric approximation only once, unlike previous deep CNN-based approaches. Thanks to its powerful encoder, PAVER can learn the saliency from three simple relative relations among local patch features, outperforming state-of-the-art models for the Wild360 benchmark by large margins without supervision or auxiliary information like class activation. We demonstrate the utility of our saliency prediction model with the omnidirectional video quality assessment task in VQA-ODV, where we consistently improve performance without any form of supervision, including head movement.

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