raster image to hexadecimal conversion

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2 total messages Started by Chris_Heys Thu, 14 Aug 2008 17:16

#162

Author: Chris_Heys
Date: Thu, 14 Aug 2008 17:16

6 lines
810 bytes

Dear People

What's the easiest way of converting a raster image to hexadecimal ?
For example, I might want to turn a 100 X 100 bitmap, 24 bits deep, into a string of 60,000 hex digits.
This, for feeding to the PS colorimage operator.
Thanks in advance.

Re: raster image to hexadecimal conversion

#163

Author: Aandi_Inston
Date: Thu, 14 Aug 2008 17:31

9 lines
1064 bytes

It depends on your programming language and the current form of the
image. I assume you have the uncompressed pixel data, NOT just the
contents of a bitmap file? 

If I were writing in C I use the standard technique of defining a
string of 16 characters for each hex digit, and index it with each
half of each byte in turn.

Aandi Inston

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