Re: [Gimp-developer] color balance (preserve luminosity) bug

2005-12-16 Thread Nathan Summers
On 12/14/05, Jon Niehof <[EMAIL PROTECTED]> wrote: > --- sean <[EMAIL PROTECTED]> wrote: > > > Why would it not be: > > > > L = (R + G + B) / 3 > > Because 255 blue is dimmer than 255 green. NTSC standard: > Gray scale intensity = 0.299R + 0.587G + 0.114B True, although unless you are coding for a

Re: [Gimp-developer] color balance (preserve luminosity) bug

2005-12-14 Thread Jon Niehof
--- sean <[EMAIL PROTECTED]> wrote: > Why would it not be: > > L = (R + G + B) / 3 Because 255 blue is dimmer than 255 green. NTSC standard: Gray scale intensity = 0.299R + 0.587G + 0.114B __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best

[Gimp-developer] color balance (preserve luminosity) bug

2005-12-14 Thread sean
I found a bug in Gimp's preserve luminosity feature located in the color balance tool (code is in color-balance.c).The easiest way to see the bug is to turn on preserve luminosity and adjust R G B to any amount that is equal. The result should be no change to the image at all because they should ca