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LoLiGrUB ASBL • Consulter le sujet - mémoire saturée par Imagemagick

mémoire saturée par Imagemagick

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mémoire saturée par Imagemagick

Message par didiervillers » 28 Déc 2013 11:23

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Re: mémoire saturée par Imagemagick

Message par francois » 28 Déc 2013 12:14

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Re: mémoire saturée par Imagemagick

Message par linox » 28 Déc 2013 15:53

"Il semble que la perfection soit atteinte non quand il n'y a plus rien à ajouter, mais quand il n'y a plus rien à retrancher."
Terre des hommes, III Antoine de Saint-Exupéry.
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Re: mémoire saturée par Imagemagick

Message par didiervillers » 28 Déc 2013 17:50

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Re: mémoire saturée par Imagemagick

Message par didiervillers » 28 Déc 2013 20:48

Sur le forum de la communauté Imagemagick, on trouve des messages récurrents sur les problèmes de mémoire, par exemple ici :
C'est décrit aussi sur le site, ici :

Même en monochrome ou gris, il semblerait que les images sont mises en mémoire avec 4 canaux et sur 16 bits ! Mes images occuperaient donc chacune environ 70 Mb en mémoire !!

J'ai une solution acceptable via le traitement de lots d'une cinquantaine d'images et l'importation successive de plusieurs fichiers tif dans le logiciel de traitement en aval.

N'empêche que c'est pas très satisfaisant et que ce devrait être possible de générer des fichiers tif monochrome en utilisant beaucoup moins de mémoire. Un fichier final d'une centaine de page fait à peine 10 Mb !
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Re: mémoire saturée par Imagemagick

Message par linox » 28 Déc 2013 23:54

sur mon systeme 30 photos en jpg (5676/3020)pixels, test de ce soir
passage en 500/535 avec un bord un texte ajouté et une ombre moin de 45 sec (imagemagic 6.8.7.10-1)
tiff / jpeg fort différent ?
"Il semble que la perfection soit atteinte non quand il n'y a plus rien à ajouter, mais quand il n'y a plus rien à retrancher."
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