Uncalibrated X-ray stereo reconstruction
We describe a novel application of uncalibrated stereo reconstruction to Roentgen Stereophotogrammetry Analysis (RSA). In RSA, stereo X-ray images are taken of a bone containing a prosthesis (e.g. a replacement knee) and a number of metal markers. The aim is to recover the relative position of the p...
| Main Authors: | , , |
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| Format: | Conference item |
| Language: | English |
| Published: |
BMVA Press
1995
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| _version_ | 1826317793378697216 |
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| author | Talmage, D Noble, A Zisserman, A |
| author_facet | Talmage, D Noble, A Zisserman, A |
| author_sort | Talmage, D |
| collection | OXFORD |
| description | We describe a novel application of uncalibrated stereo reconstruction
to Roentgen Stereophotogrammetry Analysis (RSA). In RSA, stereo
X-ray images are taken of a bone containing a prosthesis (e.g. a replacement knee) and a number of metal markers. The aim is to recover
the relative position of the prosthesis and markers in 3D.
Accuracy in previous RSA methods has been limited by two factors:
manual feature selection and an assumption that camera calibration
parameters are known to high precision - this is not the case in practice.
Furthermore, the manual processing is slow and tedious.
We report progress towards developing a fully automatic RSA system. New algorithms are described for automatically localising marker
points in X-ray images to sub-pixel accuracy, and using them to reconstruct accurate 3D positions using robust statistical methods. Preliminary experiments give excellent results. |
| first_indexed | 2025-03-11T16:59:33Z |
| format | Conference item |
| id | oxford-uuid:57f9828f-0168-4737-9f7c-6ef14bef5842 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2025-03-11T16:59:33Z |
| publishDate | 1995 |
| publisher | BMVA Press |
| record_format | dspace |
| spelling | oxford-uuid:57f9828f-0168-4737-9f7c-6ef14bef58422025-03-10T11:22:43ZUncalibrated X-ray stereo reconstructionConference itemhttp://purl.org/coar/resource_type/c_5794uuid:57f9828f-0168-4737-9f7c-6ef14bef5842EnglishSymplectic ElementsBMVA Press1995Talmage, DNoble, AZisserman, AWe describe a novel application of uncalibrated stereo reconstruction to Roentgen Stereophotogrammetry Analysis (RSA). In RSA, stereo X-ray images are taken of a bone containing a prosthesis (e.g. a replacement knee) and a number of metal markers. The aim is to recover the relative position of the prosthesis and markers in 3D. Accuracy in previous RSA methods has been limited by two factors: manual feature selection and an assumption that camera calibration parameters are known to high precision - this is not the case in practice. Furthermore, the manual processing is slow and tedious. We report progress towards developing a fully automatic RSA system. New algorithms are described for automatically localising marker points in X-ray images to sub-pixel accuracy, and using them to reconstruct accurate 3D positions using robust statistical methods. Preliminary experiments give excellent results. |
| spellingShingle | Talmage, D Noble, A Zisserman, A Uncalibrated X-ray stereo reconstruction |
| title | Uncalibrated X-ray stereo reconstruction |
| title_full | Uncalibrated X-ray stereo reconstruction |
| title_fullStr | Uncalibrated X-ray stereo reconstruction |
| title_full_unstemmed | Uncalibrated X-ray stereo reconstruction |
| title_short | Uncalibrated X-ray stereo reconstruction |
| title_sort | uncalibrated x ray stereo reconstruction |
| work_keys_str_mv | AT talmaged uncalibratedxraystereoreconstruction AT noblea uncalibratedxraystereoreconstruction AT zissermana uncalibratedxraystereoreconstruction |