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WorksheetsImage Representation
Total questions: 15
Worksheet time: 8mins
How many colours can there be if the image has 1 bit per pixel?
4
1
2
3
How many colours can there be if the image has 2 bits per pixel?
4 Colours
2 Colours
2 Colours
8 Colours
16 Colours
How many colours can there be if the image has 3 bits per pixel?
4 Colours
2 Colours
1 Colours
8 Colours
16 Colours
How many bits do you need to be able to store 16 colour?
2 bits
4 bits
8 bits
16 bits
32 bits
Images on a screen are actually lots of tiny blocks of colour joined together into something called a bitmap.
False
True
........ is a grid format with each box on the grid containing one “Picture element” which is better known as a “Pixel”
Vector image
Analogue image
Bitmap image
Pixel is ......
the smallest element of a sound file
One Byte
the smallest element of a picture
2 Bytes
In black and white images each pixel uses ....
4 bits
8 bits
1 bit
2 bits
....... is measured in “dots per inch” (DPI) or “pixels per inch” (PPI)
Colour depth
Colour
Resolution
Sound
What is meant by DPI?
Dynamic points per inch
Dots per inch
Pins per inch
What is meant by PPI?
Pixels per inch
Points per inch
Pins per inch
.............. of an image is data about data e.g (image resolution, image height, image width)
Colour depth
Resolution
Metadata
An image with a high resolution has more ............, so larger .......... size
pixels, points
objects, file
bits, points
pixels, file
............... is the total number of pixels in the image: width × height
Image contrast
Colour depth
Image resolution
...................... is the number of possible colours in an image.
This is not necessarily the same as the number of colours used.
Colour depth
Image resolution
Image size
