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A comparative study between Elliptic Fourier and B-spline descriptors for object contour representation
dc.contributor.author | Ferrer Arnau, Luis Jorge |
dc.contributor.author | Parisi Baradad, Vicenç |
dc.contributor.author | Soria Pérez, José Antonio |
dc.contributor.author | Nasreddine, Kamal |
dc.contributor.author | Benzinou, Abdesslam |
dc.contributor.other | Universitat Politècnica de Catalunya. Departament d'Enginyeria Electrònica |
dc.date.accessioned | 2015-03-04T08:44:19Z |
dc.date.created | 2014 |
dc.date.issued | 2014 |
dc.identifier.citation | Ferrer-Arnau, Ll. [et al.]. A comparative study between Elliptic Fourier and B-spline descriptors for object contour representation. A: International Image Processing, Applications and Systems Conference. "2014 First International Image Processing, Applications and Systems Conference (IPAS): procedings". Hammamet: 2014, p. 1-5. |
dc.identifier.isbn | 978-1-4799-7068-1 |
dc.identifier.uri | http://hdl.handle.net/2117/26572 |
dc.description.abstract | In this work, a comparative study between Elliptic Fourier and B-spline descriptors is carried out for comparing their efficiency in characterizing the contour shape of image objects. In both cases, the goal is to obtain the least representation error using the fewest possible number of coefficients. With Fourier descriptors, different number of harmonics are used while the remaining ones are set to zero. In the B-spline case, coefficients are obtained iteratively using a least-square filter, followed by a decimation procedure. Linear and cubic B-splines are considered. In general, data will be more compressed when the lower number of coefficients is used, but the representation error also increases considerably. We use a signal/error ratio, expressed in dBs, to measure the similarity of each approximation. The signal value is obtained from the ‘modulo’ addition of all coordinate points, whereas the error value is computed accumulating the ‘modulo’ distance between original and reconstructed shape. It can be shown that for a lower compression rate, the results do not vary significantly in all three methods. For higher compression rates, Elliptic Fourier Descriptors are more efficient than linear and cubic B-splines, especially in soft contours, but B-splines have lower computational cost. |
dc.format.extent | 5 p. |
dc.language.iso | eng |
dc.subject | Àrees temàtiques de la UPC::Enginyeria de la telecomunicació |
dc.subject.lcsh | Fourier analysis |
dc.subject.lcsh | Harmonic analysis |
dc.subject.lcsh | Image processing |
dc.subject.lcsh | Spline theory |
dc.subject.other | image contours |
dc.subject.other | Elliptic Fourier |
dc.subject.other | cubic B-splines |
dc.subject.other | linear B-splines |
dc.subject.other | signal/error ratio |
dc.title | A comparative study between Elliptic Fourier and B-spline descriptors for object contour representation |
dc.type | Conference report |
dc.subject.lemac | Fourier, Anàlisi de |
dc.subject.lemac | Anàlisi harmònica |
dc.subject.lemac | Imatges--Processament |
dc.subject.lemac | Splines, Teoria de |
dc.contributor.group | Universitat Politècnica de Catalunya. (TIEG) - Terrassa Industrial Electronics Group |
dc.contributor.group | Universitat Politècnica de Catalunya. SARTI - Centre de Desenvolupament Tecnològic de Sistemes d'Adquisició Remota i Tractament de la Informació |
dc.identifier.doi | 10.1109/IPAS.2014.7043301 |
dc.description.peerreviewed | Peer Reviewed |
dc.relation.publisherversion | http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=7043301&isnumber=7043254 |
dc.rights.access | Restricted access - publisher's policy |
local.identifier.drac | 15448637 |
dc.description.version | Postprint (published version) |
dc.date.lift | 10000-01-01 |
local.citation.author | Ferrer-Arnau, Ll.; Parisi, V.; Soria, J.; Nasreddine, Kamal; Benzinou, Abdesslam |
local.citation.contributor | International Image Processing, Applications and Systems Conference |
local.citation.pubplace | Hammamet |
local.citation.publicationName | 2014 First International Image Processing, Applications and Systems Conference (IPAS): procedings |
local.citation.startingPage | 1 |
local.citation.endingPage | 5 |