Hi David : Forgive my hurried top-post , but am just popping my head in for a couple of quick mails before I disappear again (short holiday last week and now long work days out of town) .
Thanks for this tool , and although I haven't had a chance to try it today it does look like to be nicely in line with the direction I've been strenously suggesting recently , as far as RS moving from it's current RGB mantra and eventually towards optional color space concepts . Well , I'm sure that has been in the works for V5 for a while now , but this awesome tool of yours allows us to practice now with V4.5 ! By the way , how did you create this ? Did it take the SDK to do this ? Would it be possible to modify the current Post-Pro Contrast Filter to also _increase_ contrast in Post ? What about the 'Specular' control on this Gi_Brightness tool of yours ? Could you make it also work with the Value 'channel' ? What about all 3 HSV curves in your new and improved Gi_Brightness_ Control as opposed to the current 3 R-G-B curves ? Anyway , thanks again , and the questions are really just a way of add- ressing a possible perceived need for change in the way V4.5 currently handles contrast and color space . Garry Curtis > Hi Listers : > Following recent discussions on GI here's an improved GI post effect. > Basically when you apply and RGB curve to brighten dark areas this > results in reduced colour saturation as Gary found out. The solution > is to change the GI brightness control so it works only on the Value > in HSV colour space instead of RGB space. The attached 2 pics demon- > strate this. > GI_RGB_curve shows the default system and the GI traced results with > a curve acting on RGB. > GI_HSV_curve shows the new system and the GI traced results with the > same curve acting on V. > INSTRUCTIONS FOR INSTALLATION AND USE: > The new system uses my RealMan HSV conversion scripts. You may have > these already for PhotoGrey or other distributions, but seeing as > they're so tiny I'll attach them to this mail as well. These scripts > need to be placed in a subfolder "...\Realsoft\Realman\Scripts" or you > can place them wherever you want and redirect the VSL realman objects. > Of course you'll need RealMan installed as well! > Save the attached "ImprovedGIBrightnessControl.r3d" file somewhere > sensible like maybe RS's 'posteffects' folder. > > Load/create any GI scene, delete the existing 'GI_brightness_control' > posteffect, and in the posteffects window right click and choose 'paste > from a file', then select the 'ImprovedGIBrightnessControl.r3d' file and > it'll appear exactly as the default GI_brightness_control. > That's all there is to it, and now your GI control won't result in washed > out colours in the shadows! > David Coombes > [EMAIL PROTECTED]
