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Tecnologia Arte e fotografia

Information in Images

Information in Images ,[object Object],[object Object],[object Object],[object Object],[object Object]

Pixelated Images Image made of pixels Each pixel has more than just ‘on’ or ‘off’ setting… It has many different levels – this is dependent on the number of bits

Bits and Bobs ,[object Object],[object Object],[object Object],[object Object]

[object Object],[object Object],[object Object],Bit Stream n 2 n This is a 6-bit number – it has a maximum of 2 6 = 64 possible values The actual value above is 21 – can you see why? What are the number of possible values with 8-bits?

[object Object],[object Object],[object Object],What are the number of possible values with 8-bits? There are 256 values – 0 to 255 or 2 8 Binary numbers are to the base 2 – written log 2

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1. Information in Images

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3. Pixelated Images Image made of pixels Each pixel has more than just ‘on’ or ‘off’ setting… It has many different levels – this is dependent on the number of bits

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