Estimation of Jomon period pithouse energy costs through the use of reconstructions

在过去的财政年度里，我第一次去山梨县的云之町遗址扫描碉堡重建。我记录了3个独立的碉堡，并利用2500多张图像创建了这些结构的初始3D模型。自从最初的记录以来，我一直在努力提高模型的质量，并以一种更容易使用的方式处理模型，同时仍然保留材料测量所需的必要空间保真度。摄影测量过程可以创建非常详细的模型，但大部分捕获的信息与碉堡的主要结构部件没有直接关系。在这一点上，主要的挑战是试图隔离与结构完整性直接相关的坑道组件。我已经确定并测试了一种创建模型横截面的可靠方法，以便更容易地测量不同的结构组件，而不会让软件陷入不必要的数据泥潭。最初的测试还发现了捕获方法中的一些弱点。在使某些图像与主要模型对齐方面存在问题。碉堡内部的光线条件不佳造成了一些问题，在结构内部跟踪标记的创建和利用方面可以进行一些改进。我已经确定了几种改进捕获过程的方法，并将在未来的扫描行程中实现它们。初步研究结果在8月份的计算机应用与定量方法会议上发表。

During the past fiscal year I conducted my first trip to scan pithouse reconstructions at the Umenoki site in Yamanashi prefecture. I recorded 3 separate pithouses and created initial 3D models of these structures utilizing over 2500 images. Since the initial recording I have been working on ways to improve the model quality as well as processing the models in a way that makes them easier to work with while still retaining the necessary spatial fidelity needed for material measurements. The photogrammetry process can create highly detailed models, but much of the captured information is not directly related to the main structural components of the pithouse. The main challenge at this point has been to try to isolate the pithouse components that would be directly tied to structural integrity. I have identified and tested a reliable method of creating cross sections of the models in order to more easily measure different structural components without the software being bogged down with unnecessary data.The initial testing also identified some weaknesses in the capture methods. There were issues with getting certain images to align with the main models. Difficult lighting conditions in the pithouse interiors have caused some problems and some improvements can be made in the creation and utilization of tracking markers inside the structure. I have determined several ways to improve the capture process and will implement them in future scanning trips.Preliminary research results were presented at the Computer Applications and Quantitative Methods Conference in August.