A Fuzzy Indexing and Retrieval System Research Group on Intelligent Machines A Fuzzy Indexing and Retrieval System of Historic Mosaics W. Maghrebi, M.A. Khabou, A. Ben Ammar, A.M. Alimi  We propose a System for indexing and retrieval of mosaics. The system presents three principal moduls : The segmentation modul : deals with the object boundary extraction using a fusion between edges and regions segmentation methods, The mosaics DB indexing modul :we describe the mosaic image object with fuzzy textual information, the retrieval modul : we request the mosaic DB with textual and drawing query. The System description Digitization Filtring Mosaics Filtred DB Object annotation Background/ foreground separation using fusion of wang and kown thershold method Fuzzy object features extraction Boundary extraction : canny (adaptative threshold), Robert Gradient (Gray , hue and saturation), sobel and perwitt Fuzzy object position : 3 horizontal position and three vertical ones Fuzzy object relationships (e.g near, far_from, very_far_from, at_left,…) Fuzzy object HSV color : 12 x 3 x 3 fuzzy color. Segmentation modul Indexing modul Region detection: region growing Fuzzy color region detection : fuzzy HVS Segmentation. XML formalisation Textuel Query Query formalization Salient results User XML DB Shape fuzzy similarity Drawing query Retrieval modul The System Results (a) (b) (c) (d) (f) (h) (i) (e) (g) (j) (k) (a) Original image (b) foreground/background separation (c) morpholigical operation to eliminate holes (d) background elimination (e ) boundary extraction using canny with adaptative thershold (f) object edge determintation (g) object contour (h) region growing (i) fusion of small and include region (j) fusion between homogenous and neighbours region (k) contour extracted from region segmentation <classe_name>personne</classe_name>   <object_descrip>homme+chasseur+qui+tient+un+batton</object_descrip> - <centre_gravite>   <x>265.24724061810156</x>   <y>129.57836644591612</y>   </centre_gravite> - <position_objet>   <degreh>1.0</degreh>   <degrev>1.0</degrev>   <position>droite bas</position>   </position_objet>   <surfaceobjet>0.039734572</surfaceobjet>   <pertinence>0.19867286086082458</pertinence>   <Hue_histogram>001000000000</Hue_histogram> - <Fuzzy_Color>   <Color>black</Color>   <Color>brown</Color>   <Color>dark_brown</Color>   <Color>dark_beige</Color>   <Color>gray</Color>   </Fuzzy_Color> DB Precision (%) Recall (%) Squid 86 71 Mosaic 87 94 Object class Recall rate (%) Precision rate (%) Person 85.7 60.0 Animal 83.0 45.5 Graphics 44.4 88.9 average 71.03 64.8 (d) (a) (b) (c) (a) Example of xml object description (b) Digital Museum textual GUI (c) Digital Museum drawing GUI (d) Experimental results