Bitmap and Vector Graphics

Bitmap and Vector Bitmap and Vector GraphicsGraphics

Bitmap and Vector Graphics

Bitmap GraphicsBitmap Graphics

• Photos• Scanned Images• Animations• Most pictures you find on the Internet

Photos are JPG files – lots of colours

Animations and some cartoons are GIFs – fewer colours, smaller files

Bitmap and Vector Graphics

BitmapsBitmaps• Made from a

series of small dots.

• Like graph paper with squares filled in to form an image.

Bitmap and Vector Graphics

What’s the problem?What’s the problem?

When bitmaps are enlarged – you lose quality.

Bitmap and Vector Graphics

What’s the problem?What’s the problem?

Cartoons and GIF Cartoons and GIF animations become animations become pixelatedpixelated – this – this means you can see means you can see the outline of the the outline of the squares used to squares used to make the picture.make the picture.

Bitmap and Vector Graphics

What’s the problem?What’s the problem?

Photos appear Photos appear blurryblurry

Bitmap and Vector Graphics

Vector GraphicsVector Graphics

• Vector graphics are stored in the computer using the mathematical information about the lines, curves, colours etc.

• Most windows clipart (with a WMF file extension) is a vector graphic.

• AutoShapes are also vector graphics.

Bitmap and Vector Graphics

What’s so great about What’s so great about vectors?vectors?

They can be enlarged with no loss of quality

Bitmap and Vector Graphics

This is a vector image created in Fireworks

Bitmap and Vector Graphics

When should you use When should you use each?each?

• Photos and scanned images will always be bitmaps.

• If you want subtle changes in colour, use bitmaps.

• If the image must work in different sizes, use vectors.

Bitmap and Vector Graphics

Bitmaps & Vectors in Bitmaps & Vectors in FireworksFireworks

Oval & Square Marquee

Magic Wand

Pencil

Paintbrush

Lasso Tool

Eraser

Sharpen & Blur Rubber Stamp & Red-Eye Removal

Bitmap Tools

Vector ToolsLine

Shapes

Freeform

Pen & Vector Path

Text

Knife

Bitmap and Vector Graphics

File ExtensionsFile Extensions

.bmp

.jpg

.gif

.png

.wmf

.mix

Bitmaps Vectors

Joint Photographic Group

Graphics Interchance Format

Windows Metafile Format

Bitmap and Vector Graphics

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