Image Representation
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12 QuestionsShow answers
  • Question 1
    30 seconds
    Q. (Fill in the blank to complete the sentence) Tiny squares called ..... are the building blocks of all digital images.
    answer choices
    elements
    squares
    pixars
    pixels
  • Question 2
    30 seconds
    Q. The digital picture shown has been zoomed in and appears now to be very 'blocky'. What is the correct term for this?
    answer choices
    Poor resolution
    Digitisation
    Pixelation
    Granularity
  • Question 3
    30 seconds
    Q. Colour depth is the term used to describe .....
    N.B. The term 'bit' means a binary digit e.g. '1' or '0'
    answer choices
    how many colours have been used to make the picture
    how many colours there in each pixel
    none of these
    the number of bits used to indicate the colour of a single pixel
  • Question 4
    30 seconds
    Q. Which one of the following answers best describe a limitation of this system
    answer choices
    Only a few colours can be displayed
    The system could not be used for simple computer games
    Only 1 colour can be displayed
    Only 2 colors can be displayed
  • Question 5
    30 seconds
    Q. How many colours is the bottom picture showing given that it is using 4 bit colour depth?
    answer choices
    16 colours
    4 colours
    256 colours
    5 colours
  • Question 6
    30 seconds
    Q. What will happen to the computer file size as the colour depth is increased?
    answer choices
    The file size will get smaller
    There will be no change in file size
    The file size will get bigger
    None of these
  • Question 7
    30 seconds
    Q. Resolution means
    answer choices
    how fast can the file be sent
    how much detail in an image. higher resolution means more image detail
    exactly
    change picture so it looks wrong
  • Question 8
    30 seconds
    Q. Colour depth means
    answer choices
    the difference in brightness between objects or regions

    the relationship between picture width and its height.
    the overall lightness or darkness
    the number of bits used for each colour of a single pixel.
  • Question 9
    30 seconds
    Q. When we have a 'one-bit' colour, which are the only two binary numbers that are possibilities?
    answer choices
    00 and 11
    000 and 111
    0 and 1
    0000 and 1111
  • Question 10
    30 seconds
    Q. How many combinations are there for a '2 bit' colour?
    answer choices
    8
    4
    16
    32
  • Question 11
    30 seconds
    Q. Which 'bit' image would give the best picture quality?
    answer choices
    24
    4
    8
    2
  • Question 12
    30 seconds
    Q. When you 'compress' a file, what happens?
    answer choices
    You squash your computer.
    The bitsize reduces and unnecessary information is removed.
    You put a flannel on your computer.
    The file size increases.
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