360PanT: Training-Free Text-Driven 360-Degree Panorama-to-Panorama Translation

TL;DR

360PanT is a training-free method for translating 360-degree panoramas with preserved boundary continuity, using boundary encoding and spatial control to ensure seamless, immersive results without boundary artifacts.

Contribution

It introduces a novel training-free approach that encodes boundary information and enables seamless, boundary-preserving panorama translation guided by text prompts.

Findings

Achieves seamless boundary continuity in panorama translation

Effective on real-world and synthesized datasets

Outperforms existing methods in boundary preservation

Abstract

Preserving boundary continuity in the translation of 360-degree panoramas remains a significant challenge for existing text-driven image-to-image translation methods. These methods often produce visually jarring discontinuities at the translated panorama's boundaries, disrupting the immersive experience. To address this issue, we propose 360PanT, a training-free approach to text-based 360-degree panorama-to-panorama translation with boundary continuity. Our 360PanT achieves seamless translations through two key components: boundary continuity encoding and seamless tiling translation with spatial control. Firstly, the boundary continuity encoding embeds critical boundary continuity information of the input 360-degree panorama into the noisy latent representation by constructing an extended input image. Secondly, leveraging this embedded noisy latent representation and guided by a target prompt, the seamless tiling translation with spatial control enables the generation of a translated image with identical left and right halves while adhering to the extended input's structure and semantic layout. This process ensures a final translated 360-degree panorama with seamless boundary continuity. Experimental results on both real-world and synthesized datasets demonstrate the effectiveness of our 360PanT in translating 360-degree panoramas. Code is available at \href{https://github.com/littlewhitesea/360PanT}{https://github.com/littlewhitesea/360PanT}.