| Autor: |
Julio Alvarez-Gomez, Jürgen Wahrburg, Hubert Roth |
| Rok vydání: |
2021 |
| Předmět: |
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| Zdroj: |
Current Directions in Biomedical Engineering, Vol 7, Iss 1, Pp 26-29 (2021) |
| ISSN: |
2364-5504 |
| Popis: |
Camera resectioning is the process of finding the intrinsic and extrinsic parameters of the pinhole camera model. A mobile X-ray device (C-arm) can be represented with the pinhole camera model. The C-arm parameters can be determined with a parametrization device and the direct linear transformation (DLT) algorithm. We present the conception process of a parametrization device and further optimizations of the DLT algorithm. The evaluation of the parametrization quality is carried out with an inverse registration approach on a testing device. The seven landmarks in the testing device are compared on an X-ray image and a digitally reconstructed radiograph (DRR). The average distance of the corresponding landmarks between imaging modalities is 2.5 pixels. This deviation indicates an adequate design of the parametrization device for a 2D/3D registration in minimally invasive surgery. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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