Enhancement of X-ray Fluoroscopy Image Sequences using Temporal Recursive Filtering and Motion Compensation
This thesis consider enhancement of X-ray fluoroscopy image sequences. The purpose is to investigate the possibilities to improve the image enhancement in Biplanar 500, a fluoroscopy system developed by Swemac Medical Appliances, for use in orthopedic surgery. An algorithm based on recursive filteri...
Main Author: | |
---|---|
Format: | Others |
Language: | English |
Published: |
Linköpings universitet, Medicinsk informatik
2006
|
Subjects: | |
Online Access: | http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-6494 |
id |
ndltd-UPSALLA1-oai-DiVA.org-liu-6494 |
---|---|
record_format |
oai_dc |
spelling |
ndltd-UPSALLA1-oai-DiVA.org-liu-64942013-01-08T13:44:06ZEnhancement of X-ray Fluoroscopy Image Sequences using Temporal Recursive Filtering and Motion CompensationengForsberg, AnniLinköpings universitet, Medicinsk informatikLinköpings universitet, Tekniska högskolanInstitutionen för medicinsk teknik2006Fluoroscopyimage enhancementrecursive filteringmotion compensationMedical engineeringMedicinsk teknikThis thesis consider enhancement of X-ray fluoroscopy image sequences. The purpose is to investigate the possibilities to improve the image enhancement in Biplanar 500, a fluoroscopy system developed by Swemac Medical Appliances, for use in orthopedic surgery. An algorithm based on recursive filtering, for temporal noise suppression, and motion compensation, for avoidance of motion artifacts, is developed and tested on image sequences from the system. The motion compensation is done both globally, by using the theory of the shift theorem, and locally, by subtracting consecutive frames. Also a new type of contrast adjustment is presented, received with an unlinear mapping function. The result is a noise reduced image sequence that shows no blurring effects upon motion. A brief study of the result shows, that both the image sequences with this algorithm applied and the contrast adjusted images are preferred by orthopedists compared to the present images in the system. Student thesisinfo:eu-repo/semantics/bachelorThesistexthttp://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-6494application/pdfinfo:eu-repo/semantics/openAccess |
collection |
NDLTD |
language |
English |
format |
Others
|
sources |
NDLTD |
topic |
Fluoroscopy image enhancement recursive filtering motion compensation Medical engineering Medicinsk teknik |
spellingShingle |
Fluoroscopy image enhancement recursive filtering motion compensation Medical engineering Medicinsk teknik Forsberg, Anni Enhancement of X-ray Fluoroscopy Image Sequences using Temporal Recursive Filtering and Motion Compensation |
description |
This thesis consider enhancement of X-ray fluoroscopy image sequences. The purpose is to investigate the possibilities to improve the image enhancement in Biplanar 500, a fluoroscopy system developed by Swemac Medical Appliances, for use in orthopedic surgery. An algorithm based on recursive filtering, for temporal noise suppression, and motion compensation, for avoidance of motion artifacts, is developed and tested on image sequences from the system. The motion compensation is done both globally, by using the theory of the shift theorem, and locally, by subtracting consecutive frames. Also a new type of contrast adjustment is presented, received with an unlinear mapping function. The result is a noise reduced image sequence that shows no blurring effects upon motion. A brief study of the result shows, that both the image sequences with this algorithm applied and the contrast adjusted images are preferred by orthopedists compared to the present images in the system. |
author |
Forsberg, Anni |
author_facet |
Forsberg, Anni |
author_sort |
Forsberg, Anni |
title |
Enhancement of X-ray Fluoroscopy Image Sequences using Temporal Recursive Filtering and Motion Compensation |
title_short |
Enhancement of X-ray Fluoroscopy Image Sequences using Temporal Recursive Filtering and Motion Compensation |
title_full |
Enhancement of X-ray Fluoroscopy Image Sequences using Temporal Recursive Filtering and Motion Compensation |
title_fullStr |
Enhancement of X-ray Fluoroscopy Image Sequences using Temporal Recursive Filtering and Motion Compensation |
title_full_unstemmed |
Enhancement of X-ray Fluoroscopy Image Sequences using Temporal Recursive Filtering and Motion Compensation |
title_sort |
enhancement of x-ray fluoroscopy image sequences using temporal recursive filtering and motion compensation |
publisher |
Linköpings universitet, Medicinsk informatik |
publishDate |
2006 |
url |
http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-6494 |
work_keys_str_mv |
AT forsberganni enhancementofxrayfluoroscopyimagesequencesusingtemporalrecursivefilteringandmotioncompensation |
_version_ |
1716527473530765312 |