EIT Image Reconstruction Algorithm

This is a submission for the Kuopio Tomography Challenge.

Authors

• Amal Mohammed A Alghamdi (DTU), Denmark
• Martin Sæbye Carøe (DTU), Denmark
• Jasper Marijn Everink (DTU), Denmark
• Jakob Sauer Jørgensen (DTU), Denmark
• Kim Knudsen (DTU), Denmark
• Jakob Tore Kammeyer Nielsen (DTU), Denmark
• Aksel Kaastrup Rasmussen (DTU), Denmark
• Rasmus Kleist Hørlyck Sørensen (DTU), Denmark
• Chao Zhang (DTU), Denmark

Addresses

DTU: Technical University of Denmark, Department of Applied Mathematics and Computer Science Richard Petersens Plads Building 324 2800 Kgs. Lyngby Denmark

Description of the algorithm

We have used the provided code for the EIT image reconstruction with the following modification:

• The Otsu segmentation algorithm has been replaced by the Chan-Vese segmentation algorithm from scikit-image.
• Additional generalized Tikhonov regularization has been added to penalize more when close to the missing electrodes (and boundary). The regularization matrix is a diagonal matrix. For example, for difficulty level 5, the added pentaly can be seen in the image below. This regularization adds a penalty to areas of the disk based on the distance to the center, and the angle where elctrodes are removed.

Installation instructions

To run our EIT image reconstruction algorithm, you will need:

• Python 3.x
• Required Python libraries (listed in requirements.txt)
• Access to the provided dataset (not included in this repository)

Usage instructions

python main.py path/to/input/files path/to/output/files difficulty

Examples

Phantom	Ref	Level 1	Level 4	Level 7
a
b
c
d

Scores for each phantom and difficulty 1,4 and 7:

Phantom	Level 1	Level 4	Level 7
a	0.749	0.852	0.528
b	0.918	0.612	0.470
c	0.934	0.918	0.888
d	0.750	0.769	0.757

Scores have been computed using our own implementation of the scoring function based on scikit learn.

License

All files in the repository come with the Apache-v2.0 license unless differently specified.