Intro_to_GIMP (An overview of GIMP) (GNU

ongking37 18 views 37 slides Dec 11, 2024
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About This Presentation

Overview of GIMP (GNU Image Manipulation Program)


Slide Content

‘n Overview of GIMP (GNU Image Manipulation Program)

Objectives At the end of the topic, the students are expected to: A. explain the purpose of GIMP as a photo-editing and graphic design tool; B. list the primary tools in GIMP (such as selection, paintbrush, layers, and filters) and describe their functions; C. open and close GIMP;  D. open the toolbox, image window, and dialogs and docking windows; and E. recognize and appreciate the artistic value and impact of digital image manipulation.

01 Introduction to GIMP

Overview of GIMP What is GIMP? Cross-Platform Availability Installation and Access GIMP, which stands for GNU Image Manipulation Program, is a powerful open-source software designed for tasks such as photo retouching, image composition, and image authoring. It is widely used by graphic designers and photographers due to its extensive range of features and tools. One of the key strengths of GIMP is its availability across multiple platforms, including GNU/Linux, OS X, Windows, and other operating systems. This versatility allows users from various backgrounds to utilize GIMP's capabilities without being restricted to a single operating system. Upon installation, users will find the GIMP application represented by an icon known as Wilber. This icon serves as the gateway to accessing all the functionalities that GIMP offers, making it easy for users to start their image editing projects.

Sample GIMP outputs https://images.app.goo.gl/o9i485uURJu8ogyH7

Sample GIMP outputs https://images.app.goo.gl/McFHT8uLf8XwYVtQA

Sample GIMP outputs https://images.app.goo.gl/dM9EFRUfzByUZAs86

Key Features of GIMP Photo Retouching Tools GIMP provides a comprehensive set of tools dedicated to photo retouching. Users can easily adjust colors, remove blemishes, and enhance images to professional standards, making it an essential tool for photographers. Image Composition The software excels in image composition, allowing users to create complex images by layering multiple sources. This feature is particularly useful for graphic designers who require precision in their designs. Extensive Plugin Support GIMP supports a wide range of plugins that extend its functionality. Users can add new features or tools tailored to their specific needs, enhancing their overall experience with the program.

Getting Started with GIMP User Interface Overview GIMP's user interface may seem daunting to new users, but it is highly customizable. Familiarizing oneself with the layout and available tools is the first step to effectively using the software. Basic Editing Techniques To start editing images in GIMP, users should learn basic techniques such as cropping, resizing, and color adjustments. Mastering these skills will provide a solid foundation for more advanced editing. Accessing Help and Resources GIMP has an active community and a wealth of online resources. Users can find tutorials, forums, and documentation that can help them navigate challenges and improve their skills effectively.

02 GIMP Main Windows

Toolbox – Tool Options (left) Image Window (center) GIMP Main Windows Brushes- Layers (right)

Understanding the Toolbox Tool Selection Customization Options Visibility and Docking The Toolbox in GIMP is the primary interface for selecting tools. It includes a variety of tools such as selection tools, paint tools, transform tools, and more. Each tool is represented by an icon, allowing users to quickly switch between them to perform different tasks efficiently. Users can customize the Toolbox to fit their workflow. This includes adding or removing tools, rearranging the order of tools, and adjusting the size of the Toolbox. Customization helps streamline the user experience and allows for quick access to frequently used tools. The Toolbox can be docked or undocked according to the user's preference. When docked, it remains visible at all times, enhancing accessibility. If undocked, it can be moved freely around the screen, which is particularly useful for users with multiple monitors.

Managing Image Windows Image Display The Image Window is where users can view and edit their images. It supports various zoom levels and can display multiple images simultaneously. This is particularly helpful for comparing images or working on multiple projects at once. Layer Management Each Image Window includes options for managing layers, which is crucial for non-destructive editing. Users can add, delete, and adjust layers right from the Image Window, giving them full control over their composition. Workspace Configuration Users can configure the workspace in GIMP to their liking by adjusting the size and position of the Image Window. This flexibility allows for a more personalized workspace, enhancing productivity during editing.

Hiding Docks Entering Single-Window Mode Hiding Docks Restoring Default Interface In GIMP, you can simplify your workspace by switching to single-window mode. This feature allows for a cleaner interface, making it easier to focus on your artwork. To enter this mode, navigate to the 'Windows' menu and select 'Single-Window Mode'. This will consolidate all your tools and windows into one cohesive layout. Hiding the docks in GIMP can help minimize distractions while you work. You can easily hide the docks by clicking on the 'Docks' menu and selecting 'Hide All Docks'. This will give you more screen space to concentrate on the canvas, enhancing your creative workflow. If you ever want to revert back to the default GIMP interface after customizing it, you can do so by navigating to 'Edit' > 'Preferences' > 'Interface'. Here, you can restore the default settings, which will reset any changes made to the docks and layout, providing a fresh start.

Customizing Dock Dialogs Creating a Custom Dock To enhance your GIMP experience, you can create a custom dock that contains brushes, patterns, and palettes. This allows for quick access to your most-used tools without having to navigate through multiple menus, streamlining your design process significantly. Viewing Tab Contents Each tab in your custom dock can be viewed as a list, making it easier to select the items you need. By right-clicking on the dock tabs, you can choose the 'View as List' option, which will display all brushes, patterns, or palettes in a more organized fashion, facilitating quicker selection. Separating Tabs into Individual Docks For even better organization, you can separate the three tabs containing brushes, patterns, and palettes into individual docks. This allows you to arrange your workspace according to your preferences, ensuring that everything is easily accessible and tailored to your workflow.

Hands-On Activity

TRUE or FALSE GIMP stands for Graphics Image Manipulation Program. GIMP is a free, cross-platform image editor available for GNU/Linux, OS X, Windows, and other operating systems. When you open GIMP for the first time, it opens GIMP in multiwindow mode. 4 5 The name of the GIMP mascot whose face appears as a shortcut icon is Wilmer. The Toolbox-Tool Options and Brush-Layers windows can be hidden and shown in the dock. F T F F T

Let’s Try This Hide the Docks Make the GIMP interface into single-window mode. Hide the docks. Restore the GIMP interface to the default. Hide the docks again. Customize the Dock Dialog Create a dock that has brushes, pattern, and palette. View the contents of each tab as a list. Separate the three tabs into three docks.

03 Learning Basic GIMP Concepts

Images Layers Selections Undo

Images -are the basic entities used by GIMP. An image corresponds to a single file such as a TIFF or JPEG file. We can also think of an image as corresponding to a single – display window. However, it is not possible to have a single – window display more than one image. A GIMP image may be quite a complicated thing. Instead of thinking of it as a sheet of paper with a picture on it, let us think of it as more like a stack of sheets called layers .

A GIMP image has the extension XCF (which stands for Experimental Computing Facility ) The default image size (in pixels) of a new image is 1920 for width, 1080 for height.

Layer -is a key feature that allows you to separate and edit different elements of an image. -is a stack of slides. Every layer contains a part of the image. Using layers, we can construct an image having several conceptual parts. The layers are used to manipulate a part of the image without affecting the other part. The bottom layer is the background of the image.

Hands-on activity Steps: Create a new project with the default size. Create a project with 3 layers: Background, Middle, Foreground. Add a background color, a middle shape (e.g., a tree), and a foreground object (e.g., text or another shape). a. Move layers around to see how the order affects visibility. b. Adjust the transparency of one layer.

Selection Tool -allow users to choose parts of an image to work on without affecting the rest of the image. Each image has its own selection, which we normally see as a moving dashed line, separating the selected parts from the unselected parts. These moving dashed lines are called marching ants.

` Selection Tool Rectangle Select Tool : To select rectangular areas. Ellipse Select Tool : For circular or oval selections. Free Select Tool (Lasso) : To draw freehand shapes. Fuzzy Select Tool (Magic Wand) : used to select contiguous (connected) areas of an image that share similar colors. It's commonly used for quickly selecting large portions of an image with uniform or nearly uniform colors. Select by Color Tool : selects all matching colors across the entire image, regardless of their location.

Hands-On Activities

` Basic Shapes Create a new canvas (File → New). Create various shapes using the selection tools. Use the Fill Bucket Tool to fill shapes with colors.

` Sample Output of the activity

` Free Select Tool Open a new canvas (use color skyblue as the background). Use the Free Select Tool to draw an island shape. Fill the selection with a sandy color. Use the Rectangle Select Tool to add a pier extending into the water.

` Ellipse Select Tool Use the Ellipse Select Tool to draw coconuts. Use the Free Select Tool for the tree trunk and palm leaves.

` Fuzzy Select Tool Use the Fuzzy Select Tool to select parts of the sky blue (ocean) background and adjust their color for wave effects.

` Select by Color Tool Draw at least 3 creative elements to your island (e.g., a treasure chest, a boat, or a sun). Use the Select by Color Tool to change the color of a treasure chest. Use the Free Select Tool to create a custom shape for a boat.

` Save and Share Save the project in .XCF format for editing. Export the final design as a .PNG or .JPG to share. Submit the . xcf and . png format in Genyo

Undo When we make mistakes, we can undo them . In fact, we can usually undo a substantial number of the most recent things we did. GIMP makes this possible by keeping a history of our actions. The history consumes memory though, so undoability is not infinite. Some actions use very little undo memory; hence we can do dozens of them before the earliest ones are deleted. Other types of action require massive amounts of undo memory. Good thing, we can configure the amount of memory GIMP allowed for the undo history of each image.

Open and Save an Old File To save a file, we simply go to File, and Click Save or Save As. Save lets us use the old file name used. Save As allows us to use a new file name for our new image.

Identify the term It is a GIMP image that looks like a stack of sheets. Layers 2. It is a moving dashed line that separates the selected parts from the unselected parts. Selection tool 3. It keeps and makes undoing actions possible. GIMP 4. It is the default image size (pixels) of a new image. 1920 x 1080 5. It is the extension of a GIMP image. XCF
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