Recherche d'information dans les bases d'images de manuscrits anciens par une caractérisation multi-échelle des écritures

Guillaume Joutel 1 Véronique Eglin 1 Hubert Emptoz 1
1 imagine - Extraction de Caractéristiques et Identification
LIRIS - Laboratoire d'InfoRmatique en Image et Systèmes d'information
Abstract : The aim of this scientific work is to propose an original approach of writers characterization based on the handwriting multi scale decomposition into two main features: curvature and orientation. For every shape point, those two dimensions are extracted by a Curvelets analysis before getting joined together in a compact signature. Curvelets are a specialised version of anisotropic wavelets which are well adapted to the representation of discontinuities along shapes. This is a new geometric multi scale transform for which atoms are indexed by their position, scale and orientation. They integrate the concept of directionnality and allow a sparse representation of images containing objects with many borders, as it is the case of handwritings. For each image, this characterization is synthesized in a compact and single signature used in our information retrieval system dedicated to medieval and humanistic writings. This tool provides very promising results to the use of experts in histories, literatures and palaeographers.
Document type :
Conference papers
Complete list of metadatas

https://hal.archives-ouvertes.fr/hal-01501875
Contributor : Équipe Gestionnaire Des Publications Si Liris <>
Submitted on : Tuesday, April 4, 2017 - 4:35:39 PM
Last modification on : Friday, January 11, 2019 - 5:08:45 PM

Identifiers

  • HAL Id : hal-01501875, version 1

Citation

Guillaume Joutel, Véronique Eglin, Hubert Emptoz. Recherche d'information dans les bases d'images de manuscrits anciens par une caractérisation multi-échelle des écritures. CORIA 2007, Mar 2007, Saint-Étienne, France. pp.413-424. ⟨hal-01501875⟩

Share

Metrics

Record views

164