Oitijjo-3D：从街景图像快速进行3D遗产重建的生成式AI框架
Oitijjo-3D: Generative AI Framework for Rapid 3D Heritage Reconstruction from Street View Imagery
AI总结：
本文提出Oitijjo-3D，一个免费的生成式AI框架，利用公开街景图像通过多模态推理与神经图像转3D生成技术，快速重建文化遗产的3D模型，显著降低经济与技术门槛。
摘要：
孟加拉国的文化遗产修复面临资源有限和技术专长稀缺的双重挑战。传统的3D数字化方法（如摄影测量或LiDAR扫描）需要昂贵的硬件、专业操作人员和广泛的现场访问，这在发展中国家的背景下通常是不可行的。因此，从Paharpur佛教寺院到Ahsan Manzil，孟加拉国的许多建筑瑰宝仍然面临衰败的危险，且无法以数字形式访问。本文介绍了Oitijjo-3D，这是一个免费的生成式AI框架，旨在实现3D文化保护的普及。通过使用公开的Google Street View图像，Oitijjo-3D通过两阶段流程重建遗产结构的忠实3D模型：利用Gemini 2.5 Flash Image进行多模态视觉推理以实现结构-纹理合成，以及通过Hexagen进行神经图像到3D生成以恢复几何结构。该系统在几秒钟内生成照片级真实且度量一致的重建结果，与传统的Structure-from-Motion流程相比实现了显著加速，且无需任何专用硬件或专家监督。在Ahsan Manzil、Choto Sona Mosque和Paharpur等地标上的实验表明，Oitijjo-3D在保持视觉和结构保真度的同时，大幅降低了经济和技术门槛。通过将开放图像转化为数字遗产，这项工作将保护重新定义为资源有限国家中由社区驱动、AI辅助的文化延续行为。
英文摘要：
Cultural heritage restoration in Bangladesh faces a dual challenge of limited resources and scarce technical expertise. Traditional 3D digitization methods, such as photogrammetry or LiDAR scanning, require expensive hardware, expert operators, and extensive on-site access, which are often infeasible in developing contexts. As a result, many of Bangladesh's architectural treasures, from the Paharpur Buddhist Monastery to Ahsan Manzil, remain vulnerable to decay and inaccessible in digital form. This paper introduces Oitijjo-3D, a cost-free generative AI framework that democratizes 3D cultural preservation. By using publicly available Google Street View imagery, Oitijjo-3D reconstructs faithful 3D models of heritage structures through a two-stage pipeline - multimodal visual reasoning with Gemini 2.5 Flash Image for structure-texture synthesis, and neural image-to-3D generation through Hexagen for geometry recovery. The system produces photorealistic, metrically coherent reconstructions in seconds, achieving significant speedups compared to conventional Structure-from-Motion pipelines, without requiring any specialized hardware or expert supervision. Experiments on landmarks such as Ahsan Manzil, Choto Sona Mosque, and Paharpur demonstrate that Oitijjo-3D preserves both visual and structural fidelity while drastically lowering economic and technical barriers. By turning open imagery into digital heritage, this work reframes preservation as a community-driven, AI-assisted act of cultural continuity for resource-limited nations.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
