Computers are digital, they can only handle binary numbers. So if an image is to be handled by a computer, the analogue image has to be converted into a set of binary numbers. i.e you 'digitise' an image with some imput device
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What is lossless compression?
In lossless compression when the file is compressed, it would be an exact copy of the original and wouldn't loose any detail at all.
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What is lossy compression?
In lossy compression, when the file is compressed, it would look exactly the same but it would loose some detail.
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What is a pixel?
A pixel is short for Picture Element. Smallest individual dot that can be displayed on a computer monitor. Each pixel is given a colour and a brightness value.
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What is a bitmap?
File format for digital images. Made up of a large number of pixels.
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What does resolution mean?
Means how many lines, pixels or dots are present over a standard length.Length is usually inches or millimeters.
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