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#1 Absurd  Icon User is offline

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How do computers encode/decode pictures?

Posted 10 October 2013 - 01:25 AM

Hi.
I'm new here and I have this question that have been bothering me for some time.
I couldn't find answer anywhere on line, and I was hoping to get some explantion here.

It might sound silly to some of you, so please bare with me... :rolleyes:

So I know that in order to encode charachters, computers use one of the character-encoding systems, like ASCII or UTF-8 and so on, where in each one of them, every letter, number and sign gets a unique binary string.
That way, you can store any information you want.
But what about a picture? it doesn't have letters in it, or signs, or numbers, so how does the computer encode a picture to a set of binary string?
A link to an informative article or paper will be just as useful.
Thanks in advance!

Sorry for the poor English, it is not my native language.

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Replies To: How do computers encode/decode pictures?

#2 megabit  Icon User is offline

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Re: How do computers encode/decode pictures?

Posted 10 October 2013 - 01:58 AM

View PostAbsurd, on 10 October 2013 - 01:25 AM, said:

Hi.
I'm new here and I have this question that have been bothering me for some time.
I couldn't find answer anywhere on line, and I was hoping to get some explantion here.

It might sound silly to some of you, so please bare with me... :rolleyes:/>

So I know that in order to encode charachters, computers use one of the character-encoding systems, like ASCII or UTF-8 and so on, where in each one of them, every letter, number and sign gets a unique binary string.
That way, you can store any information you want.
But what about a picture? it doesn't have letters in it, or signs, or numbers, so how does the computer encode a picture to a set of binary string?
A link to an informative article or paper will be just as useful.
Thanks in advance!

Sorry for the poor English, it is not my native language.


Well it is similar for images. There are different types of image formats, each of which has its own standardized format for creating/displaying images.

http://en.wikipedia....ge_file_formats

The each of the formats uses a different technique for storing the bits of data, like:

http://en.wikipedia....erchange_Format
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#3 Absurd  Icon User is offline

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Re: How do computers encode/decode pictures?

Posted 10 October 2013 - 02:26 AM

great, thanks.
that is exactly what I was looking for.
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