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Digital Media and Web Design > Digital Graphics > Flashcards

Digital Graphics Flashcards

1
Q

What is a uncompressed file type?

A

A Uncompressed File format are used for creating and editing graphics.

They maintain all originally information e.g. layers, masks, layer styles etc. which can be freely edited once the file is opened in a supported software.

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2
Q

What is a compressed file type?

A

Graphics that are compressed from their uncompressed formats in order to be used for their final purposes e.g. PSD - PNG

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3
Q

Lossless Compression?

A
  • Reduces file size with no image quality loss
  • When file is saved, its compressed, when its opened, the file decompressed restoring its original data.
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4
Q

Lossy Compression?

A

Looks for redundant/unessential pixel information and permanently discards it

  • Effective for media which doesn’t need 100% of its original data (audio, video, images etc.)
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5
Q

What does JPEG stand for?

A

Joint Photographic Export Group

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6
Q

Lossy File formats?

A

JPEG

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7
Q

Lossless File formats?

A

PNG
GIF
TIFF

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8
Q

What is a JPEG used for?

A
  • Photographs
  • Web graphics where small file size is essential
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9
Q

What does PNG stand for?

A

Portable Network Graphic

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10
Q

What is a PNG used for?

A
  • Used for
    • Web graphics requiring transparency
    • screenshots
    • Icons
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11
Q

What does GIF stand for?

A

Graphic Interchange Format

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12
Q

What file formats support transparency?

A

PNG, GIF, SVG

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13
Q

What does TIFF stand for?

A

Tagged Image File Format

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14
Q

What is a TIFF used for?

A
  • Often used in Photography
  • Suitable to use when printing
  • Large file sizes (not web friendly!)
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15
Q

What does PDF mean?

A

Portable Document Format

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15
Q

What does EPS mean?

A

Encapsulated PostScript

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16
Q

What compression algorithm is used in JPEGs for lossy compression?

A

Huffman Encoding

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17
Q

What compression algorithm is used in GIFs and PNGs for lossless compression?

A

LZW (Lempel-Ziv-Welch)

TIFF use this!

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18
Q

How many colours is in a 8-bit?

A

256 colours

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19
Q

how many bits are a GIF?

A

8-bit file format
supporting up to 256 colours

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20
Q

How many bits make up 24 bits?

A

8 bits to red, 8 bits to green, 8 bits to blue = 24 bits

20
Q

How many colours does a PNG image have?

A

16.7 million

21
Q

What is RGB?

A

Additive colour system, seen in computers black-white

22
Q

What does RGB mean?

A

Red, Green, Blue

23
What does HSV mean?
Hue Saturation Value
24
HSB/HSL meaning?
Hue, Saturation, Brightness / Hue, Saturation, Lightness
25
What is HSB used for?
used in CSS Human perception of colour
26
CMYK meaning?
Cyan, Magenta, Yellow, Key/Black
27
What is CMYK?
Subtractive colour system used in printing white - black Commonly used for printing
28
What is DPI?
Ink droplets printer will produce per inch while printing an image - more dots = more detail when printed
29
DPI meaning?
Dots Per Inch
30
PPI meaning?
Pixels Per Inch
31
What is PPI?
300 is the standard for high quality digital graphics, lower will look pixelated and blurry for rasterised media
32
What does Creative Commons (CC) mean?
CC is an internationally active non-profit organisation that provides free licences for creators to use when making their work available to the public
33
CC BY
- Re-users can: - Distribute - Remix - Adapt - Build upon material in any medium/format as long as credit is given
34
CC BY-SA
- Re-users can: - Distribute - Remix - Adapt - Build upon material in any medium/format as long as credit is given - license the modified material under identical terms - Allows for commercial use
35
CC BY-NC
- Re-users can: - Distribute - Remix - Adapt - Build upon material in any medium/format as long as credit is given - license the modified material under identical terms - Allows for commercial use
36
CC BY-NC-SA
- Distribute - Remix - Adapt - Build upon material in any medium/format so long as credit is given - Only for non-commercial purposes - license the modified material under identical terms
37
CC BY-ND
- Re-users can: - copy and distribute material in any medium or format - only in its un-adapted form only - so long as credit is given to the creator - allows for commercial use
38
CC BY-NC-ND
- Re-users can: - copy and distribute material in any medium or format - only in its un-adapted form only - so long as credit is given to the creator - only for non commercial use of the work is permitted
39
CC BY meaning?
Credit must be given to the original creator
40
CC NC meaning?
Only Non Commercial uses of the work are permitted
41
CC ND meaning?
No adaptions of the work are permitted
42
CC SA meaning?
Adaptations must be shared under the same terms
43
What is the Copyright Design and Patents Act length?
For images, its 70 years plus life of the creator
44
Punishment for breaching Copyright Design and Patents Act length?
- fines - imprisonment - loss of reputation - destruction of equipment used for creation
45
What is IP Intellectual Property used for?
- This includes: - Brand names - Inventions - visual look of products and designs
46
What is a meta graphic?
- images which can contain both vector and bitmap information - e.g. embedding JPG into a SVG as a background layer
47
What is vector graphics
Vectors graphics are images created using from geometric shapes and mathematical statements that place lines and curves in a 2d or 3d space. - They can be re-scaled and the graphics will not lose quality, ideal for simple graphics and logos
48
What are bitmaps?
Bitmaps are graphics made from pixels which each have a colour value. They are commonly used for illustration, photography and digital graphics due to its ability to display high detail

Digital Media and Web Design (5 decks)

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