BFTAW BDPA Workshop Introduction to GIMP Chris

Some Image Types Bitmap () JPEG (Web) TIFF (Printing) GIF (Small, few colors) PNG (Replace for GIF) XCF (GIMP)

Bitmap Microsoft Paint’s default Uncompressed Windows wallpaper Large file sizes

JPEG or JPG Commonly used for pictures (and cameras) Small file sizes (great for web) File size vs quality (user can change) Lossy data compression

GIF Static or animated Index colors (256 colors) non-photographic type images (buttons…)

TIFF Great for printing (Great quality) Large files Optional compression LZW (lossless)

PNG Portable Network Graphic W3C standard to replace GIF Doesn’t lose quality (lossless) Transparent

XCF GIMP’s file extension Preserves your image as a “working project” Layers Colors History Attributes

Image Type Summary Bitmap (Large file size) JPEG (Web Images, small files size) TIFF (Best quality, ideal for Printing, larger file size) GIF (Small, few colors – 256 max, animate, transparent) PNG (Replace for GIF, 16 million colors, transparent, animate) XCF (Preserves layers and other GIMP attributes to create a “working project”)

Printing vs Web(screen) Printing dpi: 150 – 300, 400 – 1500 (Pros) CMYK (Cyan, Magenta, Yellow, Key (black) ) TIFF or JPEG images Screens dpi: 72 RGB (Red, Green, Blue) JPEG, GIF, or PNG images

Pixel Short for Picture Element NO inherent height or width NO inherent shape One color (any color) A Screen Resolution (1280x1024)

GIMP (GNU Image Manipulation Program)

Installing GIMP

Introduction to GIMP (Toolbar panel) Tools Properties of the tool

Introduction to GIMP (Image panel) Tools Properties of the tool selected Ruler Zoom

Introduction to GIMP (Other panels) Layers FontsColors

Panel Layout

General topics Canvas, Images, Layer, Selection Selection Layers Rotate, Scale, Mirror and Resize Crop Images Fill or outline selections

Canvas, Image, Layer, Selection Canvas (entire boundary) – resize doesn’t affect image Image (entire boundary) – resizes everything including canvas Layer (black and yellow dotted line) – only can edit within that box when you’re on that layer Selection (black and white dotted line) - Only changes within selection

Selection Lasso – Draw your selection like a pencil Circle – Select round images Square – Select square images Normal, Add, Subtract, Intersect Wand – Select by similar color you select (touching) Color – Select regions with similar color

Layers (part 1) Image shown above Current Layer selected (White background) Top Layer (Transparent background) Bottom Layer (Covered by current layer) Layer – Hide or show it Trash – Delete Layer Add Layer – Move Layer – Duplicate Layer

Layers (part 2 – Pasting a picture) Pasting into your picture produces this “Floating” selection You have two options: 1)Anchor the pasted later into the layer underneath 2)Create a new layer and put the pasted layer on top

Rotate, Scale, Mirror and Resize (only for layer, selection, or path) Rotate Scale Shear Perspective Mirror

Crop Make your selection Right click on picture and select Image -> Crop to Selection

Fill or Outline selection 1.Make a selection 2.Pick your color (I used blue) 3.Click the Edit menu 4.Click “Fill with FG Color” (to fill) or “Stroke Selection” (to outline)

Advanced Topics Layer Mask (coming up…) Picture collage Enhance colors Picture touch up

Layer Mask (step 1) 1.Create two layers (Mask and Background) 2.Select the top layer (as shown below) Layer 1 - Mask Layer 1 - Background

Layer Mask (step 2) 1.Use the wand tool to select the inside of the puzzle piece. 2.Delete your selection using the delete key once the space inside the puzzle is selected.

Layer Mask (step 3) 1.Continue to do that for the remaining pieces (feel free to try something creative with the black piece!)

GIMP Resources Gimp Resources Tutorials, Inspiration, Patterns, Brushes & More Gimp Tutorials DeviantArt Hawsmont Universe livejournal Snap2Objects – 85 Killer Resources Every Designer Should Know know/ Smashing Magazine