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Index › Programming Questions & Help › Syntax Questions › Read Pixel value from 0-255
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Read Pixel value from 0-255 (Read 437 times)
righi
Read Pixel value from 0-255
Apr 17th, 2008, 3:45am  
I've searched a lot of topics but I couldn´t find an answer.

I'm Using the .get() method to get a pixels value. The problem is that im using a grayscale image, but the .get() function returns me strange values.

Is there a way to get a colour´s value only betwen 0-255?
I know we can pass those values as parameters to other methods like stroke().
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eskimoblood
Re: Read Pixel value from 0-255
Reply #1 - Apr 17th, 2008, 10:20am  
As in a greyscale image red, green and blue have the  same value you can use red(get(x,y)) to get the value. To understand how processing handle colours internally take a look at the http://processing.org/reference/color_.html
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Andreas Köberle {eskimoblood}
222550793  
righi
Re: Read Pixel value from 0-255
Reply #2 - Apr 17th, 2008, 3:36pm  
Thank you, eskimoblood!
It worked perfectly.

this is a ScreenShot of my program.
...

It's in portuguese, but i think it's understandable. ^^
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