GNU Image Manipulation Program Manuale Utente

GNU Image Manipulation Program 1 / 606 GNU Image Manipulation Program Manuale utente GNU Image Manipulation Program 2 / 606 Copyright © 2002, 2003, 2004, 2005, 2006, 2007 The GIMP Documentation Team Note legali Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section enphrased GNU Free Documentation License. GNU Image Manipulation Program 3 / 606 COLLABORATORS TITLE : REFERENCE : GNU Image Manipulation Program ACTION NAME DATE SIGNATURE WRITTEN BY 26 luglio 2007 REVISION HISTORY NUMBER DATE DESCRIPTION NAME $Revision: 1985 $ 2006-12-30 j.h GNU Image Manipulation Program 4 / 606 Indice I Introduzione a GIMP 21 1 Introduzione 22 1.1 Benvenuti a GIMP . 22 1.1.1 Autori . 22 1.1.2 Il sistema d’aiuto di GIMP . 22 1.1.3 Caratteristiche e funzionalità . 22 1.2 Cosa c’è di nuovo in GIMP? . 23 1.2.1 Interoperabilità e supporto agli standard . 23 1.2.2 Modifica delle scorciatorie . 23 1.2.3 Anteprime dei Plug-in . 23 1.2.4 Anteprime in tempo reale delle operazioni di trasformazione. 24 1.2.5 Conformità alla Guida all’interfaccia umana di GNOME (GNOME HIG) . 24 1.2.6 Migrazione a GTK+ 2.4 . 24 1.2.7 Supporto di base ai vettori . 24 1.2.8 Inoltre . 24 2 Esecuzione di GIMP 25 2.1 Eseguire GIMP . 25 2.1.1 Piattaforme conosciute . 25 2.1.2 Lingua . 25 2.1.3 Argomenti della riga di comando . 26 2.2 Prima esecuzionde di GIMP . 27 3 Primi passi con Wilber 30 3.1 Concetti base di GIMP . 30 3.2 Le finestre principali in GIMP . 32 3.2.1 La finestra strumenti . 33 3.2.2 Finestra immagine . 35 3.2.3 Pannelli e finestre agganciabili . 37 GNU Image Manipulation Program 5 / 606 3.3 Annullamenti . 41 3.3.1 Operazioni che non possono essere annullate . 41 3.4 Pillole di GIMP . 42 3.4.1 Obiettivi . 42 3.4.2 Cambiare le dimensioni di un’immagine (Scalatura) . 42 3.4.3 Rendere i file JPEG più piccoli . 45 3.4.4 Ritagliare un’immagine . 47 3.4.5 Ottenere informazioni sulle immagini . 48 3.4.6 Cambio di modalità . 49 3.4.7 Riflettere un’immagine . 51 3.5 Come disegnare linee dritte . 51 3.5.1 Obiettivi . 52 3.5.2 Conclusioni . 54 4 Sbloccarsi in GIMP 56 4.1 Sbloccare la situazione . 56 4.1.1 Bloccato! . 56 4.1.2 Cause frequenti di blocco con GIMP . 56 II Come diventare un mago di GIMP? 60 5 Caricare le immagini in GIMP 61 5.1 Tipi di immagine . 61 5.2 Creazione di nuovi file . 62 5.3 Aprire file esistenti . 62 5.3.1 File apri . 63 5.3.2 Apri posizione . 64 5.3.3 Apri recenti . 64 5.3.4 Navigatore dei file . 64 5.3.5 Trascinamento . 64 5.3.6 Copia e incolla . 65 5.3.7 Navigatore immagini . 65 6 Salvare le immagini con GIMP 66 6.1 File.......................................................... 66 6.1.1 Salvataggio delle immagini . 66 6.1.2 Salvataggio dei file . 66 6.2 Preparare immagini per Internet . 71 6.2.1 Immagini con un rapporto ottimale dimensione/qualità . 72 6.2.2 Riduzione ulteriore della dimensione dei file . 72 6.2.3 Salvataggio di immagini con trasparenza . 73 GNU Image Manipulation Program 6 / 606 7 Dipingere con GIMP 75 7.1 La selezione . 75 7.1.1 Sfumatura . 76 7.1.2 Rendere una selezione parzialmente trasparente . 77 7.2 Creazione e uso delle selezioni . 77 7.2.1 Spostamento selezioni . 77 7.2.2 Creazione di una selezione a mano libera . 78 7.3 Maschera veloce . 79 7.3.1 Panoramica . 79 7.3.2 Proprietà . 80 7.4 Uso della maschera veloce . 80 7.5 Tracciati . 80 7.5.1 Creazione di tracciati . 81 7.5.2 Tracciati e selezioni . 82 7.5.3 Trasformazione dei tracciati . 82 7.5.4 Delineare un tracciato . ..

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