GRETSI'03 19e Colloque GRETSI
sur le traitement du signal et des images
Paris   8 - 11 septembre 2003
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Informations concernant l'article

Titre
Identification of flashes in video based on 2D image analysis
Auteur(s)
Silvio Jamil Ferzoli Guimaraes UFMG-BRASIL and ESIEE-FRANCE
Michel Couprie ESIEE-FRANCE
Neucimar Jeronimo Leite IC-UNICAMP-BRASIL
Arnaldo de Albuquerque Araujo UFMG-BRASIL
Références
vol. II, page 279
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Résumé

The flash presence is very common in digital videos, mainly in television journal videos. When a flash occurs, an increase of the luminosity in a few frames is produced. When we calculate a dissimilarity measure, we can see that this measure is very high in the frames affected by a flash. In fact, the presence of flashes often disturbs the identification of video transitions. In this work, we transform the video into a 2D image in which the flash is represented by a vertical light line. Considering this image, we propose two methods for flash detection without taking into account dissimilarity measures. The first one considers a filtering using white top-hat by reconstruction and the second one considers a filtering of the max tree calculated from statistical measures of each frame (or frame sub-samplings).
Edition : Télécom-Paris -- 2003