The aim of this document is to introduce the basics of image processing using Adobe Photoshop.
By the end of this course you will be able to:
• crop an image;
• correct perspective problems;
• adjust the tone and colours of an image;
• sharpen an image;
• scale an image;
• retouch a damaged photograph;
• save an image in a suitable format;
• make selections using a variety of tools;
• blend images to create a seamless montage;
• add and edit text.

Photoshop is the ultimate Swiss army knife for all your imaging needs, from basic to highly sophisticated image editing. For example you can simply enhance a photograph (remove red eye effect and scratches, crop, etc.), or create a complex photo collage or a sophisticated Web interface.

The main components of the Photoshop work area are:
• Menu bar – contains menus organised by tasks. For example, the Layers menu contains commands for working with layers.
• Toolbox – contains tools for creating and editing images.
• Options bar – provides options for the currently active tool.
• Active image area (also called Document window) – displays the active open file. Several images can be open at the same time, but only one can be active at a time.
• Palettes – help you monitor and modify images. They can be nested by dragging the title tab of one into the body of another. Use the Window menu to show/hide palettes Other useful elements are:
• Palette well – helps you organize the palettes in your work area.
• Status bar – located at the bottom of every document window, it displays useful information about the image and brief instructions for using the active tool.
• Context menu – display commands relevant to the active tool, selection, or palette. You access them by right-clicking on an image or palette item.
The Toolbox, Palettes and Active image area can easily be moved around the workspace by clicking the top bar and dragging them.

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