Title
Reconstructing Fukushima: A Case Study
Abstract
We present the application of 3D reconstruction technology to the inspection and decommissioning work at the damaged Fukushima Daiichi nuclear power station in Japan. We discuss the challenges of this project, such as the difficult image capture conditions (including under water), required use of limited imaging hardware, and capture by personnel inexperienced in 3D reconstruction. We present an overview of the system developed for this project, a real-time reconstruction pipeline with robust camera pose estimation, low-latency probabilistic dense depth estimation and a novel descriptor for point cloud alignment -- the Co-occurrence Histogram of Angle and Distance (CHAD). We discuss the modifications required to standard algorithms in order to perform reliably in such a scenario. As well as quantitative evaluations of these components on existing datasets, we show qualitative 3D reconstruction results of debris from the damaged plant and its spent fuel pool. Such results have enabled planning of the critical process of debris removal, without the harmful requirement of extensive human presence on site.
Year
DOI
Venue
2014
10.1109/3DV.2014.75
3DV), 2014 2nd International Conference
Keywords
Field
DocType
image reconstruction,inspection,nuclear engineering computing,nuclear facility decommissioning,nuclear power stations,3D reconstruction technology,CHAD,Fukushima Daiichi nuclear power station,Japan,cooccurrence histogram of angle and distance,image capture conditions,imaging hardware,low-latency probabilistic dense depth estimation,point cloud alignment,real-time reconstruction pipeline,robust camera pose estimation,3D descriptor,Dense 3D Reconstruction,SLAM
Nuclear decommissioning,Histogram,Computer vision,Standard algorithms,Computer science,Real-time computing,Pose,Artificial intelligence,Probabilistic logic,Point cloud,Nuclear power,3D reconstruction
Conference
Volume
Citations 
PageRank 
1
1
0.36
References 
Authors
22
4
Name
Order
Citations
PageRank
Seki, A.110.36
Woodford, O.J.210.36
Sadayoshi Ito3455.49
Stenger, B.410.36