ABSTRACT

Heritage at risk is a terminology used to describe the sites that are highly at risk of being lost as a result of intentional demolition, deterioration, negligence or subject to improper preservation or mistreatment. Iraq is one of the countries that suffered in the last decade from intentional demolition of highly valuable heritage sites and objects. As Iraq gradually recovering from wars and violence with limited resources and budgets, historical and heritage places are still at risk because of neglect, community ignorance, insufficient planning, and military actions. Therefore, in this paper, we propose the idea of using crowdsource drone images and videos which are captured by amateurs for the documentation of heritage sites. Those crowdsource images represent a great source of data that does not require significant financial and hard labor resources. It should be noted that there is no guarantee to have the captured data being sufficient for the 3D documentation and therefore it is proposed to integrate, when possible, multiple captured crowdsource data to ensure complete documentation.

In this paper, three Iraqi historical sites are 3D reconstructed using crowdsource drone videos, namely: Rabban Hormizd Monastery (AD 640), Taq Kasra (AD 242 to 272), and the Great Mosque of Samarra (AD 849–851). The experiments showed a successful 3D modeling of the three mentioned heritage objects using the crowdsource drone video images despite being captured for non-3D purposes which require high expertise and planning. With the absence of highly accurate reference data, the overall relative accuracy of the object’s dimensions is found to be less than 1 m.

摘要

濒危遗产是一个术语，用于描述由于故意拆除、恶化、疏忽或受到不当保护或虐待而极有可能丢失的遗址。伊拉克是过去十年因故意拆除高价值遗址和文物而遭受苦难的国家之一。随着伊拉克在资源和预算有限的情况下逐渐从战争和暴力中恢复过来，由于忽视、社区无知、计划不足和军事行动，历史和遗产地仍然处于危险之中。因此，在本文中，我们提出了使用业余爱好者拍摄的众包无人机图像和视频来记录遗产地的想法。这些众包图像代表了不需要大量财务和艰苦劳动资源的重要数据来源。应该注意的是，不能保证捕获的数据足以用于 3D 文档，因此建议在可能的情况下集成多个捕获的众包数据以确保完整的文档。

在本文中，三个伊拉克历史遗址使用众包无人机视频进行了 3D 重建，即：Rabban Hormizd Monastery (AD 640)、Taq Kasra (AD 242 to 272) 和 the Great Mosque of Samarra (AD 849–851)。实验表明，使用众包无人机视频图像对上述三个遗产对象进行了成功的 3D 建模，尽管是为需要高专业知识和规划的非 3D 目的而捕获的。由于缺乏高度准确的参考数据，物体尺寸的整体相对精度被发现小于 1 m。