Study Notes
Graphics in ICT involve understanding different image types, creating graphics using basic shapes, and editing images effectively. You will learn the differences between bitmap and vector images, how to create graphics that meet specific purposes, and apply editing techniques to improve images.
- Bitmap Images — made up of tiny squares called pixels. Example: Photographs taken with digital cameras.
- Vector Images — created using mathematical formulas that define shapes, lines, and curves. Example: Company logos and brand identities.
- Cropping — removing unwanted areas from the edges of an image. Example: Focusing attention on the main subject by removing unnecessary background space.
- Captions — text added to images to provide context and improve accessibility. Example: "Annual Sports Day – Saturday 15 June" added to a photograph.
- Grouping Objects — selecting multiple shapes to move, resize, or modify them together. Example: Grouping shapes in a flowchart to maintain their relative positions.
Exam Tips
Key Definitions to Remember
- Bitmap images are made of pixels and lose quality when enlarged.
- Vector images use paths and can be resized without losing quality.
Common Confusions
- Confusing bitmap and vector characteristics.
- Over-editing graphics, making them look cluttered.
Typical Exam Questions
- What is a bitmap image? A bitmap image is made up of pixels and loses quality when enlarged.
- What is a vector image? A vector image uses paths and can be resized without losing quality.
- When should you use bitmap images? Use bitmap images for photographs and realistic pictures.
What Examiners Usually Test
- Ability to select appropriate image types for specific purposes.
- Skills in creating and editing graphics using software tools.
- Understanding of image characteristics and their applications.