WWW/Internet - Portal do Software Público Brasileiro

IADIS International Conference WWW/Internet 2010Figure 5. PhotoMosaicFigure 6. PhotoMosaic SystemFigure 7. PhotoMapFigure 8. PhotoMap SystemPhotoMosaic (Figure 5) creates a photographic mosaic consisting of many small photographs from aphotograph that a user gives voluntarily. A large-scale photograph repository is necessary for creation ofphotographic mosaic, but PhotoMosaic does not prepare such a repository. PhotoMosaic uses an imagehosting service, Flickr, instead of local photographs, downloading photographs which have average color of asmall section of a given photograph. The PhotoMosaic system is shown in Figure 6. PhotoMosaic uses 75 ×75 pixels thumbnail images which Flickr generates. No Flickr service exists to search photographs by color;we extract feature values of color from crawled Flickr images. PhotoMosaic divides the thumbnail into ninesections, calculates the average color of each section, then saves the feature vector to a metadata databasewith thumbnail’s URL.An original photograph is given via e-mail by a user along with a notice to PhotoMosaic. The originalphotograph is divided and compared in each section with feature vectors of metadata database and get a URLof closest image. That is to say, PhotoMosaic generates a list of URLs from a given photograph and creates aphotographic mosaic. Then the photograph is appended to list on the Conductor’s display. The photographicmosaic that is displayed on WDiM is pointed by Wii remote. A user tilts the Wii remote and scrolls the list oforiginal photographs, then chooses one photograph from the list. If a user chooses one from list, then thephotographic mosaic is shown in WDiM.When a photograph is chosen, Coordinator divides the URL list for each Players and sends a subset ofthe URLs to corresponding Players. Then each Player downloads thumbnail images in parallel and draws acorresponding part of the photographic mosaic 2 .2 See also http://www.youtube.com/watch?v=A9vJ-umQLok155