Array Processing and Fast Optimization Algorithms for Distorted Circular Contour Retrieval
<p/> <p>A specific formalism for virtual signal generation permits to transpose an image processing problem to an array processing problem. The existing method for straight-line characterization relies on the estimation of orientations and offsets of expected lines. This estimation is pe...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2007-01-01
|
| Series: | EURASIP Journal on Advances in Signal Processing |
| Online Access: | http://asp.eurasipjournals.com/content/2007/057354 |
| _version_ | 1818114361376374784 |
|---|---|
| author | Marot Julien Bourennane Salah |
| author_facet | Marot Julien Bourennane Salah |
| author_sort | Marot Julien |
| collection | DOAJ |
| description | <p/> <p>A specific formalism for virtual signal generation permits to transpose an image processing problem to an array processing problem. The existing method for straight-line characterization relies on the estimation of orientations and offsets of expected lines. This estimation is performed thanks to a subspace-based algorithm called subspace-based line detection (SLIDE). In this paper, we propose to retrieve circular and nearly circular contours in images. We estimate the radius of circles and we extend the estimation of circles to the retrieval of circular-like distorted contours. For this purpose we develop a new model for virtual signal generation; we simulate a circular antenna, so that a high-resolution method can be employed for radius estimation. An optimization method permits to extend circle fitting to the segmentation of objects which have any shape. We evaluate the performances of the proposed methods, on hand-made and real-world images, and we compare them with generalized Hough transform (GHT) and gradient vector flow (GVF).</p> |
| first_indexed | 2024-12-11T03:49:30Z |
| format | Article |
| id | doaj.art-642b8184f2c64a928d1b5a62b94ae736 |
| institution | Directory Open Access Journal |
| issn | 1687-6172 1687-6180 |
| language | English |
| last_indexed | 2024-12-11T03:49:30Z |
| publishDate | 2007-01-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | EURASIP Journal on Advances in Signal Processing |
| spelling | doaj.art-642b8184f2c64a928d1b5a62b94ae7362022-12-22T01:21:55ZengSpringerOpenEURASIP Journal on Advances in Signal Processing1687-61721687-61802007-01-0120071057354Array Processing and Fast Optimization Algorithms for Distorted Circular Contour RetrievalMarot JulienBourennane Salah<p/> <p>A specific formalism for virtual signal generation permits to transpose an image processing problem to an array processing problem. The existing method for straight-line characterization relies on the estimation of orientations and offsets of expected lines. This estimation is performed thanks to a subspace-based algorithm called subspace-based line detection (SLIDE). In this paper, we propose to retrieve circular and nearly circular contours in images. We estimate the radius of circles and we extend the estimation of circles to the retrieval of circular-like distorted contours. For this purpose we develop a new model for virtual signal generation; we simulate a circular antenna, so that a high-resolution method can be employed for radius estimation. An optimization method permits to extend circle fitting to the segmentation of objects which have any shape. We evaluate the performances of the proposed methods, on hand-made and real-world images, and we compare them with generalized Hough transform (GHT) and gradient vector flow (GVF).</p>http://asp.eurasipjournals.com/content/2007/057354 |
| spellingShingle | Marot Julien Bourennane Salah Array Processing and Fast Optimization Algorithms for Distorted Circular Contour Retrieval EURASIP Journal on Advances in Signal Processing |
| title | Array Processing and Fast Optimization Algorithms for Distorted Circular Contour Retrieval |
| title_full | Array Processing and Fast Optimization Algorithms for Distorted Circular Contour Retrieval |
| title_fullStr | Array Processing and Fast Optimization Algorithms for Distorted Circular Contour Retrieval |
| title_full_unstemmed | Array Processing and Fast Optimization Algorithms for Distorted Circular Contour Retrieval |
| title_short | Array Processing and Fast Optimization Algorithms for Distorted Circular Contour Retrieval |
| title_sort | array processing and fast optimization algorithms for distorted circular contour retrieval |
| url | http://asp.eurasipjournals.com/content/2007/057354 |
| work_keys_str_mv | AT marotjulien arrayprocessingandfastoptimizationalgorithmsfordistortedcircularcontourretrieval AT bourennanesalah arrayprocessingandfastoptimizationalgorithmsfordistortedcircularcontourretrieval |