| Records |
| Author |
Jorge Bernal |
| Title |
Use of Projection and Back-projection Methods in Bidimensional Computed Tomography Image Reconstruction |
Type |
Report |
| Year |
2009 |
Publication |
CVC Tecnical Report |
Abbreviated Journal |
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| Volume |
141 |
Issue |
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Pages |
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| Keywords |
Projection, Back-projection, CT scan, Euclidean geometry, Radon transform |
| Abstract |
One of the biggest drawbacks related to the use of CT scanners is the cost (in memory and in time) associated. In this project many methods to simulate their functioning, but in a more feasible way (taking an industrial point of view), will be studied.
The main group of techniques that are being used are the one entitled as ’back-projection’. The concept behind is to simulate the X ray emission in CT scans by lines that cross with the image we want to reconstruct.
In the first part of this document euclidean geometry is used to face the tasks of projec- tion and back-projection. After analysing the results achieved it has been proved that this approach does not lead to a fully perfect reconstruction (and also has some other problems related to running time and memory cost). Because of this in the second part of the document ’Filtered Back-projection’ method is introduced in order to improve the results.
Filtered Back-projection methods rely on mathematical transforms (Fourier, Radon) in order to provide more accurate results that can be obtained in much less time. The main cause of this better results is the use of a filtering process before the back-projection in order to avoid high frequency-caused errors.
As a result of this project two different implementations (one for each approach) had been implemented in order to compare their performance. |
| Address |
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| Corporate Author |
Computer Vision Center |
Thesis  |
Master's thesis |
| Publisher |
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Place of Publication |
Barcelona, Spain |
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800 |
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| Notes |
MV; |
Approved |
no |
| Call Number |
IAM @ iam @ Ber2009 |
Serial |
1693 |
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| Author |
Hany Salah Eldeen |
| Title |
Colour Naming in Context through a Perceptual Model |
Type |
Report |
| Year |
2009 |
Publication |
CVC Technical Report |
Abbreviated Journal |
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| Volume |
130 |
Issue |
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Pages |
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| Corporate Author |
Computer Vision Center |
Thesis |
Master's thesis |
| Publisher |
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Place of Publication |
Bellaterra, Barcelona |
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Approved |
no |
| Call Number |
Admin @ si @ Eld2009 |
Serial |
2389 |
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| Author |
Naila Murray |
| Title |
Perceptual Feature Detection |
Type |
Report |
| Year |
2009 |
Publication |
CVC Technical Report |
Abbreviated Journal |
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| Volume |
131 |
Issue |
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Pages |
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| Corporate Author |
Computer Vision Center |
Thesis |
Master's thesis |
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Place of Publication |
Bellaterra, Barcelona |
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CIC |
Approved |
no |
| Call Number |
Admin @ si @ Mur2009 |
Serial |
2390 |
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| Author |
Josep M. Gonfaus |
| Title |
Semantic Segmentation of Images Using Random Ferns |
Type |
Report |
| Year |
2009 |
Publication |
CVC Technical Report |
Abbreviated Journal |
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| Volume |
132 |
Issue |
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Pages |
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| Corporate Author |
Computer Vision Center |
Thesis |
Master's thesis |
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Place of Publication |
Bellaterra, Barcelona |
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ISE |
Approved |
no |
| Call Number |
Admin @ si @ Gon2009 |
Serial |
2391 |
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| Author |
Albert Gordo |
| Title |
A Cyclic Page Layout Descriptor for Document Classification & Retrieval |
Type |
Report |
| Year |
2009 |
Publication |
CVC Technical Report |
Abbreviated Journal |
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| Volume |
128 |
Issue |
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Pages |
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| Corporate Author |
Computer Vision Center |
Thesis |
Master's thesis |
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Place of Publication |
Bellaterra, Barcelona |
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CIC;DAG |
Approved |
no |
| Call Number |
Admin @ si @ Gor2009 |
Serial |
2387 |
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| Author |
Noha Elfiky |
| Title |
Enhancing Local Binary Patterns with Spatial Pyramid Kernel: Application to Scene Classification |
Type |
Report |
| Year |
2009 |
Publication |
CVC Technical Report |
Abbreviated Journal |
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| Volume |
129 |
Issue |
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Pages |
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| Corporate Author |
Computer Vision Center |
Thesis |
Master's thesis |
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Place of Publication |
Bellaterra, Barcelona |
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ISE |
Approved |
no |
| Call Number |
Admin @ si @ Elf2009 |
Serial |
2388 |
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| Author |
David Augusto Rojas |
| Title |
Colouring Local Feature Detection for Matching |
Type |
Report |
| Year |
2009 |
Publication |
CVC Technical Report |
Abbreviated Journal |
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| Volume |
133 |
Issue |
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Pages |
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| Corporate Author |
Computer Vision Center |
Thesis |
Master's thesis |
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Place of Publication |
Bellaterra, Barcelona |
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CIC |
Approved |
no |
| Call Number |
Admin @ si @ Roj2009 |
Serial |
2392 |
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| Author |
Juan Diego Gomez |
| Title |
Toward Robust Myocardial Blush Grade Estimation in Contrast Angiography |
Type |
Report |
| Year |
2009 |
Publication |
CVC Technical Report |
Abbreviated Journal |
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| Volume |
134 |
Issue |
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Pages |
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| Keywords |
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| Corporate Author |
Computer Vision Center |
Thesis |
Master's thesis |
| Publisher |
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Place of Publication |
Bellaterra, Barcelona |
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| Notes |
MILAB |
Approved |
no |
| Call Number |
Admin @ si @ Gom2009 |
Serial |
2393 |
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| Author |
Olivier Penacchio |
| Title |
Relative Density of L, M, S photoreceptors in the Human Retina |
Type |
Report |
| Year |
2009 |
Publication |
CVC Technical Report |
Abbreviated Journal |
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| Volume |
135 |
Issue |
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Pages |
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| Corporate Author |
Computer Vision Center |
Thesis |
Master's thesis |
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Place of Publication |
Bellaterra, Barcelona |
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CIC |
Approved |
no |
| Call Number |
Admin @ si @ Pen2009 |
Serial |
2394 |
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| Author |
Xavier Boix |
| Title |
Learning Conditional Random Fields for Stereo |
Type |
Report |
| Year |
2009 |
Publication |
CVC Technical Report |
Abbreviated Journal |
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| Volume |
136 |
Issue |
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Pages |
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| Keywords |
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| Abstract |
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| Address |
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| Corporate Author |
Computer Vision Center |
Thesis |
Master's thesis |
| Publisher |
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Place of Publication |
Bellaterra, Barcelona |
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CIC |
Approved |
no |
| Call Number |
Admin @ si @ Boi2009 |
Serial |
2395 |
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| Author |
Shida Beigpour |
| Title |
Physics-based Reflectance Estimation Applied to Recoloring |
Type |
Report |
| Year |
2009 |
Publication |
CVC Technical Report |
Abbreviated Journal |
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| Volume |
137 |
Issue |
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Pages |
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| Keywords |
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| Abstract |
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| Corporate Author |
Computer Vision Center |
Thesis |
Master's thesis |
| Publisher |
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Place of Publication |
Bellaterra, Barcelona |
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CIC |
Approved |
no |
| Call Number |
Admin @ si @ Bei2009 |
Serial |
2396 |
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| Author |
Jaume Gibert |
| Title |
Learning structural representations and graph matching paradigms in the context of object recognition |
Type |
Report |
| Year |
2009 |
Publication |
CVC Technical Report |
Abbreviated Journal |
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| Volume |
143 |
Issue |
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Pages |
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| Corporate Author |
Computer Vision Center |
Thesis |
Master's thesis |
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DAG |
Approved |
no |
| Call Number |
Admin @ si @ Gib2009 |
Serial |
2397 |
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| Author |
Jose Carlos Rubio |
| Title |
Graph matching based on graphical models with application to vehicle tracking and classification at night |
Type |
Report |
| Year |
2009 |
Publication |
CVC Technical Report |
Abbreviated Journal |
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| Volume |
144 |
Issue |
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Pages |
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| Keywords |
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| Abstract |
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| Corporate Author |
Computer Vision Center |
Thesis |
Master's thesis |
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Place of Publication |
Bellaterra, Barcelona |
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CIC |
Approved |
no |
| Call Number |
Admin @ si @ Rub2009 |
Serial |
2398 |
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| Author |
Farshad Nourbakhsh |
| Title |
Colour logo recognition |
Type |
Report |
| Year |
2009 |
Publication |
CVC Technical Report |
Abbreviated Journal |
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| Volume |
145 |
Issue |
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Pages |
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| Keywords |
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| Abstract |
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| Corporate Author |
Computer Vision Center |
Thesis |
Master's thesis |
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Place of Publication |
Bellaterra, Barcelona |
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DAG |
Approved |
no |
| Call Number |
Admin @ si @ Nou2009 |
Serial |
2399 |
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| Author |
Enric Sala |
| Title |
Off-line person-dependent signature verification |
Type |
Report |
| Year |
2009 |
Publication |
CVC Technical Report |
Abbreviated Journal |
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| Volume |
146 |
Issue |
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Pages |
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| Keywords |
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| Abstract |
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| Address |
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| Corporate Author |
Computer Vision Center |
Thesis |
Master's thesis |
| Publisher |
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Place of Publication |
Bellaterra, Barcelona |
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Approved |
no |
| Call Number |
Admin @ si @ Sal2009 |
Serial |
2400 |
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