2.4 Images Flashcards

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1
Q

What are some different ways you can store images?

A
• BMP
• JPG
• GIF
• PNG
• TIFF
• SVG
• AI
• PS
2
Q

Give some bitmap image formats

A
• BMP
• JPG
• GIF
• PNG
• TIFF
3
Q

Give some vector image formats

A
• SVG
4
Q

Give some editing formats

A
• AI

- PS

5
Q

What are Bitmap images made up of?

A

Picture Element (pixels)

6
Q

What is a pixel?

A

The smallest identifiable area of an image

7
Q

What is each pixel assigned?

A

A colour which is represented by a binary value

8
Q

How can a pixel’s colour be changed?

A

Changing the value

9
Q

What is image resolution?

A

The concentration of pixels within a specific area

10
Q

What is the area in resolution?

A

The amount of pixels in the width and height of an image

11
Q

What is the typical screen resolution?

A

72 PPI (Pixels Per Inch)

12
Q

What is the typical print quality resolution?

A

300 DPI (Dots Per Inch)

13
Q

What resolutions do modern smartphones have?

A

300+ PPI

14
Q

What does more bits per pixel mean?

A

More colour combinations

15
Q

What is the formulae that dictates the amount of combinations of colours

A

2^n where n is the amount of bits

16
Q

How does the number of colours and size of the image affect file size?

A

They both increase the file size

17
Q

What are PBM monochrome images

A

Image dimensions and colours are represented in a matrix like bit pattern

18
Q

What is each pixel made up of on a screen?

A

RGB values

19
Q

A

They use numerical values and hex as they are easier for people to read and remember which can reduce errors

20
Q

What is the range of values that can be stored in RGB?

A

0-255

21
Q

If the range of values that can be stored in RGB is 25, how many bits would you need to store that colour?

A

8

22
Q

How many bits are required to store the whole pixel with RGB values?

A

3*8 bits = 24 bits (16.8 million colours)

23
Q

In 32-bit colour, what are the last 8 bits for?

A

Given to a transparency channel (to allow a background to show through)

24
Q

What is bit depth?

A

Bit depth is the number of bits available for each sample . The higher the bit depth, the higher the quality of the audio.

25
Q

Why can there be a file difference size of the file from the normal image and when it is stored?

A

Meta data

26
Q

A