Higher CS - Data rep (Graphics)

Aims

• We are learning about the advantages and disadvantages of using bit-mapped and vector graphics

Achievements (theory)

• I can describe the advantages and disadvantages of bit-mapped graphics

• I can describe the advantages and disadvantages of vector graphics

Open Ended

N5 revision - How are bitmap graphics represented on a computer system? (2 marks)

Match

Match the following terms relating to bit-mapped graphics.

• The total number of pixels in a bitmap graphic.

• The smallest element of a bit-map graphic

• The number of bits used to represent the colour of a pixel

• This is when a bitmap graphic has its size changed and becomes jagged/blurry

• This is when a bitmap graphic is made smaller or larger

Resolution

Pixel

Bit depth

Pixelation

Scaled

• Resolution

• Pixel

• Bit depth

• Pixelation

• Scaled

Dropdown

True colour can be stored with a bit depth of

Select answer

bits.

Categorize

Options (9)

Graphic can become pixelated when it is scaled.

Large file size

File size increases with increasing complexity

Cannot be edited at pixel-level

Layering is supported

Resolution independant

Small file size

Images can be edited at pixel level

File size remains the same even with increasing complexity

Organize these options into the right categories

Disadvantage of bitmap

Disadvantage of vector

Advantage of vector

Advantage of bitmap

Aims

• We are learning about the advantages and disadvantages of using bit-mapped and vector graphics

Achievements (theory)

• I can describe the advantages and disadvantages of bit-mapped graphics

• I can describe the advantages and disadvantages of vector graphics