s ruining our co-working space
<gord> AlanBell, so you know the code splits the image up in to quadrants right, well what it does is it tests those quadrants to see if there is a lot of difference, if there is, it delves in to them more. by altering a specific pixel you trick the code in to investigating those quadrants more, i think it will go up to 8 levels deeper. point is that by changing that pixel, you trick the code in to paying way more attention there. its not a bug, its an exploit
<gord> the "fix" would be to just do the simple average every pixel approach, but thats way to slow
<bigcalm_lappy> Hazar, I is 'ere!
<bigcalm_lappy> There's a silly school trip visiting the Light House today. It might be saner to converse via IRC
<daubers> https://twitter.com/#!/daubers/status/162473275044282368/photo/1 <- Why I dispise finder on osx
<bigcalm_lappy> Poor Alex is the only one not in channel
<gord> that pretty much ruins the point
<oimon> daubers: the first file is in RAID1 :D
<daubers> oimon: :p
<oimon> actually btrfs will allow you to do that
<daubers> The first file is actually on a raid6
<daubers> the second file is on the macs internal drive
<daubers> same file just copied across
<AlanBell> gord: it goes 16 levels deep, the point is that the centre pixel is shared by all 4 of the first level quadrants so it gets counted 4 times
<oimon> hmmm...having a facebook for the enterprise (yammer) seems to be an excuse to spend all day on it
<bigcalm_lappy> Nutella?
<oimon> constant streams of gubbins coming from corporate services types
<AlanBell> gord: the fix would be to make the quadrants 1px smaller all round, so the top left one would be 1,1 to centreX-1,centreY-1 rather than 0,0 to centreX,centreY
<gord> AlanBell, patches welcome
<AlanBell> gord: sure, do you agree with my thinking?
<gord> AlanBell, if they are *all* reduced by one pixel around, it'll always pick different pixels, which will stop the exploit sure
<gord> well, i could still exploit it ;) but yeah
<AlanBell> yeah, a diagonal cross in the centre