[RESOLVED] GD / Histogram

[scrupul0us]

So I'm trying to do some fancy image stuff and I'm utilizing a histogram class:

http://www.phpclasses.org/package/3370-PHP-Extracts-the-most-common-colors-used-in-images.html

...to detect the most prevalent color in an image (to basically detect the
the background color) so I can make an image larger with a continuous background (or as close to it as possible)

so, using that class and this image:

http://sale.images.woot.com/****-a-doodle!ecmDetail.png

The output of the most used color is: #a0c0e0

but... using colormania (color picker) the most prevalent color in that image is: #9EBDE3

now, I'm not sure if this is just a simple fact of the way the image is being loaded with truecolor or 32bit etc etc but I'm not too fancy with the GD to debug nuances like this

any help is appreciated

[scrupul0us]

heh apparently the board censored the url to the image im using... so yea, its the 4 letter c work used to describe a rooster

[scrupul0us]

...its almost like it's only using web safe colors... even if i remove all resizing and re-sampling it still gets it wrong

[scrupul0us]

the culprit was the rounding of the colors:

//ROUND THE COLORS, TO REDUCE THE NUMBER OF COLORS, SO THE WON'T BE ANY NEARLY DUPLICATE COLORS!
//$Colors['red']=intval((($Colors['red'])+15)/32)*32; 
//$Colors['green']=intval((($Colors['green'])+15)/32)*32;
//$Colors['blue']=intval((($Colors['blue'])+15)/32)*32;

works great now =)