From: jeljer te Wies <jeljer@...>
Date: 2009-03-23T07:11:07+09:00
Subject: Re: convert PNG to hex

Phlip wrote:
> jeljer te Wies wrote:
> 
>> I have a question ... I have to convert a png to hex (#FFFFFF).
>> I searched now for over 2 hours but can't find anything that works (like
>> png library or RMagick).
> 
> Are you asking how to convert the PNG file to one of its colors?
> 
> Use ImageMagick (or GraphicsMagick, via the command line, or MiniMagick, 
> or
> RMagick) to convert the PNG file to the most dirt-simple raster format 
> possible,
> such as YUV. Then read the first few bytes in each bit-plane, in that 
> format's
> encoding, and hash them together.
> 
> There are also get-pixel commands in RMagick...

yes I want to convert it to one of its colors ... but the image has only 
two different colors (black or white) ..
It is not really about the colors but I want to know what each pixel has 
for color (so black or white) ...

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