DIGITAL IMAGING

Question 1

BITMAP

Answer 1

The larger the graphic, the more pixels
are needed and so the file size
becomes larger

Question 2

BITMAP

Answer 2

If small graphics are enlarged, the

graphics can become blurred (PROBLEM)

Question 3

BITMAP

Answer 3

Easily convertible into other formats, picture is restricted to a rectangle, minimal support for transparency

Question 4

VECTOR

Answer 4

A graphic expressed mathematically aka using numbers

Question 5

VECTOR

Answer 5

Instructions for drawing the shape are stored

Graphics that use polygons/geometric shapes

Question 6

VECTOR

Answer 6

Graphics can be scaled up to whatever size without quality being ruined (loss of quality)
Graphics that use points, shapes, curves, lines, are stored as mathematical equations

Question 6

VECTOR

Answer 6

Graphics can be scaled up to whatever size without quality being ruined (loss of quality)
Graphics that use points, shapes, curves, lines, are stored as mathematical equations

Question 7

VECTOR

Answer 7

You can increase and decrease the format size and your lines and specific shapes will remain crisp and sharp

Question 8

VECTOR

Answer 8

You can zoom in or out as much as you like without the picture being blurred/without changing quality of the image being changed

Question 9

ADVANTAGES OF USING VECTOR OVER BITMAP

Answer 9

• Vector graphics can be enlarged without loss of quality
• Can edit individual parts of a grouped object
• Smaller file sizes
• Faster to download/upload

Question 10

OPSTIMISING AN IMAGE IS..

Answer 10

Reduction of size, file size, number of colours, resolution, dimensions, and quality over all
For;
Faster uploads/downloads
Saves memory

Question 11

ADVANTAGES OF A JPEG

Answer 11

1) 24-bit (RGB/any) colour, with up to 16 million colours / ideal for images that
use more than 256 colours
2) Smaller files

Question 12

ADVANTAGES OF JPEG

Answer 12

3) Compatible with most if not all operating systems
4) Most used and widely accepted format for images
5) Has rich colours, really great for fine photographers who need detailed pictures

Question 13

DISADVANTAGES OF JPEG

Answer 13

1) Less compression aka reduce the size, discard of data and quality
2) After compression JPEG tends to create artefacts (man edited)

Question 14

DISADVANTAGES OF JPEG

Answer 14

4) Does not support transparency

5) Cannot be animated

Question 15

ADVANTAGES OF GIF

Answer 15

1) Can support transparency
2) Can do small animation effects
3) Great for images that have limited or block colours

Question 15

ADVANTAGES OF GIF

Answer 15

1) Can support transparency
2) Can do small animation effects
3)

Question 16

ADVANTAGES OF A GIF

Answer 16

Very commonly used too, can be compressed by removing and unnecessary data,

Question 17

DISADVANTAGES OF A GIF

Answer 17

Only supports 256 colours, animated GIFS cannot be edited afterwards with tools, etc, file size can be larger than PNG

Question 18

ADVANTAGES OF A BMP

Answer 18

Bitmap files may be easily created from existing pixel data stored
in an array in memory
Supported by most OS
Most suitable for icons and small images
Pixel colours can be modified individually or as large groups

Question 19

DISADVANTAGES OF A BMP

Answer 19

Large file sizes – not web friendly / mac friendly

Question 20

ADVANTAGES OF A TIFF

Answer 20

Very flexible format, compression - JPEG, LZW, ZIP / no compression at all,
TIFF format be saved with layers, saved with transparent background

Question 21

DISADVANTAGES OF A TIFF

Answer 21

Very large file size, slow to download and slow loading time

Question 22

ADVANTAGES OF A PNGD

Answer 22

Lossless, doesn’t lose quality/detail after compression
Better than GIF because it makes smaller files
Supports transparency more than a GIF

Question 23

DISADVANTAGES OF A PNG

Answer 23

Not all web browsers accept PNG files, format isn’t good for large pictures because they tend to generate bigger files
Sometimes creates bigger files than JPEG
Cannot be animated