PowerPoint Presentation

Digital DetectivesLesson 3: Image Manipulation

StarterSee if you can spot the difference between these two images when they are resized.

StarterSee if you can spot the difference between these two images when they are resized.

Vector images vs Bitmap imagesVector images store the lines, shapes and colours of an images as mathematical formulae. When you enlarge a vector image, the formulae work out the new sizes and shapes, so there is no loss of quality.

Bitmap images are made up of millions of squares called pixels.They have a fixed image resolution, and if you try and enlarge them you will lose picture quality.

Fireworks DemonstrationCroppingSelection ToolsRetouchingCloning/StampingText Tool

Task 1 (15 mins)Open CD Resource 3aUsing some of the techniques you have been shown, work through Steps 3.3 to 3.7.

Task 2 (15 mins)Open CD Resource 3bUsing a range of techniques, manipulate some of the images in CD Resource 3a.Swap seats with your neighbour and identify the techniques he/she has used, and identify the clues! Record these on CD Resource 3b.

Glossary TermsDefine the following terms in your ICT Dictionary:

PixelBitmap imageVector imageImage resolutionClone toolLayer