Compression

Compression

Open Ended

List as many different image file types as you can..

Image File Types

• JPEG (or JPG) - Joint Photographic Experts Group

• PNG - Portable Network Graphics

• GIF - Graphics Interchange Format

• TIFF - Tagged Image File

• PSD - Photoshop Document

• BMP - Bitmap Image File

Multiple Select

How many bytes are in a kilobyte? We usually use 2 different numbers! (Pick 2)

• 1000

• 1024

• 1012

• 1048

• 1036

Multiple Choice

Which of the following formulas allow you to work out a song's file size?

* = multiply

/ = divide

File size (bits) =

• Sample rate * Bit depth * Duration

• Sample rate / Bit depth * Duration

• Sample rate * Bit depth / Duration

• Sample rate / Bit depth / Duration

Multiple Select

What words are used with compression? (Pick 2)

• Compression

• Decompression

• Shrinking

• Restoring

• Compaction

Multiple Select

What words are used with compression? (Pick 2)

• Lastless

• Lossly

• Lossy

• Lossless

• Glossy

Fill in the Blank

Compression is where the file size is...

Fill in the Blank

Decompression is where the file size is...

Multiple Choice

Would a lossy compression algorithm work for compressing a computer program?

• Yes

• No

• I'm not sure

Fill in the Blank

Which image file format uses this technique? (Only list 1)

Open Ended

What is the need for compression?

Open Ended

What is Lossy compression and state some of the effects it may have on images and sound files

Open Ended

What is Lossless compression?