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1. Identity statement
Reference TypeConference Paper (Conference Proceedings)
Sitesibgrapi.sid.inpe.br
Holder Codeibi 8JMKD3MGPEW34M/46T9EHH
Identifier6qtX3pFwXQZG2LgkFdY/UMQz4
Repositorysid.inpe.br/sibgrapi@80/2008/07.17.22.34
Last Update2008:07.17.22.34.19 (UTC) administrator
Metadata Repositorysid.inpe.br/sibgrapi@80/2008/07.17.22.34.20
Metadata Last Update2022:06.14.00.13.44 (UTC) administrator
DOI10.1109/SIBGRAPI.2008.6
Citation KeyLewinerCrai:2008:PrEsPo
TitleProjective estimators for point/tangent representations of planar curves
FormatPrinted, On-line.
Year2008
Access Date2024, May 02
Number of Files1
Size201 KiB
2. Context
Author1 Lewiner, Thomas
2 Craizer, Marcos
Affiliation1 Department of Mathematics, PUC–Rio de Janeiro, Brazil
2 Department of Mathematics, PUC–Rio de Janeiro, Brazil
EditorJung, Cláudio Rosito
Walter, Marcelo
Conference NameBrazilian Symposium on Computer Graphics and Image Processing, 21 (SIBGRAPI)
Conference LocationCampo Grande, MS, Brazil
Date12-15 Oct. 2008
PublisherIEEE Computer Society
Publisher CityLos Alamitos
Book TitleProceedings
Tertiary TypeFull Paper
History (UTC)2008-07-17 22:34:20 :: tomlew@mat.puc-rio.br -> administrator ::
2009-08-13 20:38:53 :: administrator -> tomlew@mat.puc-rio.br ::
2010-08-28 20:03:21 :: tomlew@mat.puc-rio.br -> administrator ::
2022-06-14 00:13:44 :: administrator -> :: 2008
3. Content and structure
Is the master or a copy?is the master
Content Stagecompleted
Transferable1
Version Typefinaldraft
KeywordsProjective Differential Geometry
Projective Curvature
Projective Lenght
Discrete estimators
AbstractRecognizing shapes in multiview imaging is still a challenging task, which usually relies on geometrical invariants estimations. However, very few geometric estimators that are projective invariant have been devised. This paper proposes projective length and projective curvature estimators for plane curves, when the curves are represented by points together with their tangent directions. In this context, the estimations can be performed with only the four point-tangent samples for the projective length and five for the projective curvature. The proposed length estimator is based on affine estimators and is proved to be convergent. The curvature estimator relies on the length to fit logarithmic spirals to the point-tangent samples. It is projective invariant and experiments indicate its convergence. Preliminary results using both estimators together are promising, although the estimators lack of robustness would require additional work for noisy cases.
Arrangement 1urlib.net > SDLA > Fonds > SIBGRAPI 2008 > Projective estimators for...
Arrangement 2urlib.net > SDLA > Fonds > Full Index > Projective estimators for...
doc Directory Contentaccess
source Directory Contentthere are no files
agreement Directory Contentthere are no files
4. Conditions of access and use
data URLhttp://urlib.net/ibi/6qtX3pFwXQZG2LgkFdY/UMQz4
zipped data URLhttp://urlib.net/zip/6qtX3pFwXQZG2LgkFdY/UMQz4
Languageen
Target Filelewiner-projective.pdf
User Grouptomlew@mat.puc-rio.br
administrator
Visibilityshown
5. Allied materials
Mirror Repositorysid.inpe.br/banon/2001/03.30.15.38.24
Next Higher Units8JMKD3MGPEW34M/46SG4TH
8JMKD3MGPEW34M/4742MCS
Citing Item Listsid.inpe.br/sibgrapi/2022/05.14.04.55 5
sid.inpe.br/sibgrapi/2022/06.10.21.49 1
Host Collectionsid.inpe.br/banon/2001/03.30.15.38
6. Notes
Empty Fieldsarchivingpolicy archivist area callnumber contenttype copyholder copyright creatorhistory descriptionlevel dissemination documentstage e-mailaddress edition electronicmailaddress group isbn issn label lineage mark nextedition notes numberofvolumes orcid organization pages parameterlist parentrepositories previousedition previouslowerunit progress project readergroup readpermission resumeid rightsholder schedulinginformation secondarydate secondarykey secondarymark secondarytype serieseditor session shorttitle sponsor subject tertiarymark type url volume


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