Difference between revisions of "GIMP"

Latest revision as of 15:01, 7 May 2019

INTRODUCTION

GIMP (GNU Image Manipulation Program) is a free software raster graphics editor. It is primarily employed as an image retouching and editing tool.

GIMP can accomplish essential image editing tasks such as resizing, editing, and cropping photos, photo-montages combining multiple images, and converting between different image formats. GIMP can also be used to create basic animated images in the GIF format.

It is freely available in versions tailored for most popular operating systems including Microsoft Windows, Apple Mac OS X and GNU/Linux.

For the “Spoken Tutorial on Gimp”, pls use “Gimp – version 2.6.10” on the “Ubuntu 10.10” or above.

These tutorials have been sourced from Meet the GIMP website (http://meetthegimp.org) and were originally created by Rolf Steinort. We have his express permission to use these tutorials and modify them to suit the sensibilities of the Indian learners.

The Spoken Tutorial effort for GIMP series has been contributed by Hemant Waidande under the guidance of Praveen S and Nancy Varkey from IIT Bombay.

Learners: High School and UG/PG students who wish to learn photoediting and create graphics.

                                                                                                                             Glossary

Basic Level

1. An Image For The Web
   • GIMP - a powerful image manipulation program
   • Free and open source software that runs on Linux, Windows and Mac OS
   • Equivalent of Photoshop
   • Make an image ready for the web
   • Image rotation
   • Using the Grid
   • Crop an image
   • Add more colors and contrast
   • Re-size the image
   • Sharpen the image
   • Save it as a JPEG image
2. Setting Up GIMP
   • Set up GIMP for first time users
   • Main window of GIMP - the Command Central
   • Explanation of the various small windows on the GIMP interface
     • Toolbox
     • Color box
     • Layers box
     • Channels box
     • Color Channels box
     • Path box
     • Undo History box
3. Rotating And Cropping An Image
   • Access histogram within the Image dialog
   • Make the tool box vanish
   • Use rulers
   • Minute details on rotation and cropping
   • Using rule of thirds
   • Saving the image as .xcf(GIMP's own format)
4. Adjusting Colours Using Layers
   • Adjust color using the Curves Tool
   • Simple filter with layers
   • Using Screen mode and Multiply mode
   • Setting foreground and background color
   • Switching the layers on and off
   • Adjusting opacity
5. Using Layers,Healing & Cloning Tools
   • Darker images using layer mask
   • Using Healing tool
   • Paint into a layer
   • Using brushes
   • Increase/Decrease brush size
   • Using Blur filter
   • Using Cloning tool
6. Triptychs In A New Way
   • Using layer mask for doing Triptychs
   • Using 3 images to do Triptychs
   • Scale and zoom
   • Using Active Layer option
   • Adding a frame around image
   • Fuzzy border effect
   • Add/remove guides
7. Drawing Tools
   • Pencil Tool
   • Paint brush Tool
   • Eraser Tool
   • Difference between pencil and paint brush
   • Incremental option
   • Pressure sensitivity option
   • Tricks to draw a straight line
   • Tricks to draw a line with gradient
8. Sketching
   • Sketch effect with Layers
   • Invert colours option
   • Merge two layers
   • Add a border to the image
   • Add Noise
9. Brushes
   • Using "jitter" option
   • Difference between Eraser tool and Pencil/Brush tool
   • Using "alpha channel" with the Eraser tool
   • Various brush options
   • Create your own brush
   • Download and install new brushes in GIMP
10. Colors And Dialogs
    • Color dialog box
    • Select colors in 6 different ways
      • Hue
      • Saturation
      • Value
      • Red
      • Green
      • Blue
    • Dialog box based on HSV color model
11. Selecting Sections Part 1
    • How to make a selection
      • Replace the current selection
      • Add to the current selection
      • Subtract from the current selection
      • Intersect with the current selection
    • How to de-select
    • Feather Edges
    • Rounded Corners
    • Antialiasing
    • Create a perfect square
    • Use of Quick Mask
12. Selecting Sections Part 2
    • Fuzzy Select Tool
    • Selecting colour Tool
    • Intelligent scissors or Scissors select Tool
    • Foreground select tool
13. The Curves Tool
    • Curves tool in the tool box
    • Gray Scale bar of Curves tool
    • Using Curve type button
    • Get an image with color bandings in it
14. Two Minutes Edit
    • Tricks to make text pop out
    • Tips to change only some parts of an image
    • Using the Perspective Tool
    • Aligning objects in the image to the Grid lines
    • Filter for quick editing
15. Drawing Simple Figures
    • Draw simple geometric figures
      • straight line
      • square
      • ellipse
    • Draw complicated figures with Paths Tool
16. Resolutions
    • Use Image Properties
    • Use Scale Image
17. How To Fix An Underexposed Image
    • Read EXIF information for clues to the original image
    • Use Measurement tool from tool box to see angle info
    • Seperating an image into different layers
    • Applying contrast as required to each layer
18. Adjusting Colours with Curves Tool
    • Reworking on the earlier image to enhance the colors of the image
    • Using layer masks
    • Removing the halos between layers
19. Easy Animation
    • Select the images
    • Create the in-between transition images by varying the opacity
    • Use Animation option to playback the animation
    • Save as GIF animation
    • View in Mozilla Firefox web-browser
20. Comics
    • Use Threshold Tool
    • Create a base image
    • Work on multiple copied-layers of the same image
    • Add definition to each layer of the image
    • Using Edge-detect
    • Play with the opacity and the saturation levels for stunning effects
21. Selective Sharpening
    • Work with Layers
    • Add a layer mask
    • Use the sharpening algorithm on the layer mask only to sharpen certain objects in the image
22. Questions And Answers