| Author | Message | ||
     den Member Username: Den Post Number: 177 Registered: 03-2006 |
Generally, I enhance image colors [hue/saturation] globally using the Color Curves transform in either HSV,S or HSL,S modes and individual colors with the Color Correct transform where my default color profile is sRGB….. But then it occurred to me that the Color Correct transform could be used to create a modified sRGB color space where the hue/saturation plane was not linear but yet globally applicable across the primary [R,G,B] and complimentary [C,M,Y] hues… A ‘*.colorcorrect’ file was generated where the 50% saturations for the R,G,B,C,M,Y hues were modified to be 90%… the loaded ‘*.colorcorrect’ file in the Color Correct transform looks like this:  The following illustration shows: left – camera download image; center – normally enhanced image; and right – Hi-Impact Color Correct-ed image.  In the above illustration, the transform’s amount was left at 100% and of course this can be reduced to a preference while monitoring Preview. Also, if one or more of the hues is too ‘overdone’, then ‘mouse click’ on the appropriate control point to activate it and then shorten [‘mouse click-hold-drag’ over the arrow tip] the arrow to a preference while monitoring Preview. For example, in the following illustration, the R and M original 50% saturations were reduced from 90% to 70%. Left – normally enhanced; center – Hi-Impact Color Correct-ed image; and right – modified Hi-Impact Color Correct-ed image  Additional considerations: 1. Images with high color noise content will not respond well to this approach. 2. Should one desire only R,G,B changes simply do a ‘control—mouse click’ over the C,M,Y control points to delete them from the color hexagon. 3. The original 50% hue saturation control points were arbitrarily chosen as to leave the 0% to 50% saturations unchanged but any of these control points can be relocated with a ‘mouse click’ to activate it and then a ‘mouse click-hold-drag’ over the control point to relocate it. 4. Use the Color Correct transform’s ‘zoom’ for easier shortening of the arrows and/or relocating the control points. 5. Once a control point has been ‘activated’, use the hue/saturation information appearing below the color hexagon to note arrow and/or control point changes. 6. One might consider a ‘Hi-Impact Color Correct-ed’ image as the input image for BW conversion using the Monochrome transform. The 50-90RGBCMY.colorcorrect file in text form: ColorCorrect 1.0 npts 13 radius 1.00 probesize 2 nonlinear 1 point 0 255 255 255 255 255 255 0.0000 point 1 255 0 0 255 0 0 0.0000 point 2 255 255 0 255 255 0 0.0000 point 3 0 255 0 0 255 0 0.0000 point 4 0 255 255 0 255 255 0.0000 point 5 0 0 255 0 0 255 0.0000 point 6 255 0 255 255 0 255 0.0000 point 7 255 26 26 255 128 128 0.0000 point 8 0 230 0 128 255 128 0.0000 point 9 0 0 230 128 128 255 0.0000 point 10 255 255 26 255 255 128 0.0000 point 11 26 255 255 128 255 255 0.0000 point 12 255 26 255 255 128 255 0.0000 end | ||
| Robert W. Coutant Member Username: Couman Post Number: 145 Registered: 01-2005 |
I'm a big fan of the color correction transformation, and had to try this immediately. I thought the sample "curve" to be a little extreme for the first image I tried, but tweaking to taste was very simple. Thanks Den. BTW: The CC transformation is also very useful for either generating a mask or direct treatment of "nearly blown" highlight areas. Another neat feature of CC is that multiple changes in color and brightness can be made consecutively and independently by adding additional control points -- all without using masks. For example, if after applying the "Den enhancement" you want to brighten one color in the foreground and then darken another in the background, just add a control point for the first; change brightness; add a second control point; and change its brightness. Bob C. | ||
| David J. Bookbinder Member Username: Dbookbinder Post Number: 287 Registered: 09-2002 |
Den, Interesting strategy. Which of these images (the high-impact or the "normally corrected" is actually closer to the way these birds looked in the wild? Thanks, David | ||
| den Member Username: Den Post Number: 178 Registered: 03-2006 |
DavidB... re: the blue bird [a Steller's Jay] Under most general outdoor lighting, the jay will normally look something about 2/3rds of the way between the 'camera download image' and the 'normally enhanced image' but in bright direct sunlight, the 'blue/cyan' feathers are iridescent and light up like the the 'Hi-Impact ColorCorrect-ed image'. To All..... My definition of a 'normally enhanced image' is a PWP post-processing of a highest quality jpg camera download image where the in-camera image processing is 'neutral'. The PWP post-processing consists of expansion usually to full tone range with specific tone range [3Tone Range Procedures] and image area toning to obtain desired brightness and contrast; increase the saturation using ColorCurves with HSV,S = [0,0], [20,20], [80,100], [100,100]; and then AdvancedSharpen. The illustrated 'Hi-Impact ColorCorrect-ed' images resulted from using the 'normally enhanced image' as the Input image in the Color Correct transform, loaded with the '50-90RGBCMY.colorcorrect' file. | ||
| Allan Farnsworth Member Username: Allanf Post Number: 22 Registered: 05-2004 |
Den does it again. | ||
| den Member Username: Den Post Number: 179 Registered: 03-2006 |
Off message board correspondence indicates that perhaps a bit more discussion is needed for some subtleties…. The following illustration is an approximate saturation curve profile for a R,G,B,C,M,Y hue of the 50-90RGBCMY.colorcorrect file, i.e., a 50% saturation control point increased to 90% [the arrow extending from the control point] with an effect determined by the ColorCorrect radius amount [the flat part of the profile curve] and the ColorCorrect transform amount assuming no mask.  To further illustrate what is occurring with the Color Hexagon, try this: Open any image; open the ColorCorrect transform; load the '50-90RGBCMY.colorcorrect' file; delete the CMY control points [makes it easier to see changes]; check: 'show modified color wheel' and then watch how the color hexagon changes as you adjust the radius amount... Notice that the saturation change [50 to 90%] expands/contracts around the remaining RGB control points depending upon radius size... so the ColorCorrect transform will not necessiarily produce a uniform change as would a HSV,S or HSL,S curve... in fact, the radius adjustment along with the transform's amount, offers unique fine tuning control of the ColorCorrect transform when using the suggested '50-90RGBCMY.colorcorrect' file... Another advantage to the ColorCorrect transform over a HSV,S or HSL,S curve is that if any the hues is ‘too much’, one can simply decrease its control point’s arrow length, i.e., if the jay’s blue is ‘too blue’, simply decrease B and C arrow lengths to preference while monitoring the Preview. Also BobC previously hints that the ColorCorrect transform would allow you the change a hue’s Brightness as well when the appropriate control point is ‘active’… While this aggressive approach to change an image’s color [hue/saturation] contrast may not be to everyone’s preference, it nevertheless is within PWP’s fine set of post-processing transforms/tools. | ||
| Elie Dinur Member Username: Elied Post Number: 193 Registered: 07-2003 |
den- Coincidently, some time ago I prepared for myself what I call my "Velvia" preset:  As you can see it's pretty extreme and I rarely apply it at 100%. It goes from 33 to about 97 in green and blue, 33 to 90 in cyan and 33 to 60 in red. I guess I should have shared it back then. Thank you for correcting my lapse. Bob's tip about selectively brightening is a real gem. Elie | ||
| den Member Username: Den Post Number: 180 Registered: 03-2006 |
Thank you ElieD!... you just saved me some research into a 'velvia' variant to the '50-90RGBCMY.colorcorrect' file... my next step. ...and yes, Bob's reminder of this tranform's selective Brightening feature truly adds to the possibilities! ...and your reminder that one does not have leave the transform settings [amount and radius] at maximum is good for those who prefer a less aggressive effect. | ||
| Eric Vogel Member Username: Evogel Post Number: 97 Registered: 08-2005 |
Elie - I can't make out your settings on the "cube". Would you also post a version of just the cube similar to DEN's? Thanks Eric | ||
| Elie Dinur Member Username: Elied Post Number: 194 Registered: 07-2003 |
 | ||
| Eric Vogel Member Username: Evogel Post Number: 98 Registered: 08-2005 |
Ah - much better Elie - Thanks! | ||
| David J. Bookbinder Member Username: Dbookbinder Post Number: 288 Registered: 09-2002 |
Elie, Could you post the colorcorrect file for this transform? Looks interesting. - David | ||
| den Member Username: Den Post Number: 181 Registered: 03-2006 |
Thanks again Elie... your Velvia settings applied to the jay....  | ||
| J. Kauppila New member Username: Jimmyme Post Number: 1 Registered: 04-2007 |
Den, You give the coordinates for the points, is there a way to text enter the coordinates in color correct or is mouse entry the only way? Thank you, Jim | ||
| Dieter Mayr Member Username: Dieter_mayr Post Number: 442 Registered: 11-2004 |
Jim You can't enter the coordinates directly, but when you move the cursor in the color hexagon, you get the coordinates of hue and saturation displayed below the hexagon. You can also calculate the RGB values of starting and end point and create a *.colorcorrect, like den's example above, manually in your text editor. Dieter | ||
| Elie Dinur Member Username: Elied Post Number: 195 Registered: 07-2003 |
Jim - Copy/paste the following into a new Notepad file and save as a .txt. Then change the file extension to .colorcorrect and load it into the Transformation. Feel free to change it in any way. This is the "Velvia Effect". Den's text is above. Elie ColorCorrect 1.0 npts 11 radius 1.00 probesize 2 nonlinear 1 point 0 255 255 255 255 255 255 0.0000 point 1 255 0 0 255 0 0 0.0000 point 2 255 255 0 255 255 0 0.0000 point 3 0 255 0 0 255 0 0.0000 point 4 0 255 255 0 255 255 0.0000 point 5 0 0 255 0 0 255 0.0000 point 6 255 0 255 255 0 255 0.0000 point 7 16 255 16 166 255 171 0.0000 point 8 26 255 255 170 255 255 0.0000 point 9 12 11 255 164 164 255 0.0000 point 10 255 97 97 255 165 165 0.0000 end | ||
| J E Knepley Member Username: Edk Post Number: 45 Registered: 03-2004 |
Nothing to contribute but admiration and thanks to all of you who collectively allow the rest of us to make the best use of this great program. (and not to forget Jonathan and Kiril for their participation). Been a daily user for several years and like many, I'd guess, have an established workflow (established rigidly in cement at times). However, it's threads like this one that wake me up to new possibilities. Thanks again, Ed K. http://www.pbase.com/ed_k/ | ||
| Robert W. Coutant Member Username: Couman Post Number: 146 Registered: 01-2005 |
Elie, Often with closeup shots of flowers, both saturation and brightness are uniformly high for all flower parts. In such cases, increasing contrast with a mask and the brightness curve is tedious, at best (because of the fine detail involved). However, it is very simple using the color correction transformation and its color selective brightness control. [and there's no mask required] Bob C. | ||
| Phil Elrod New member Username: Phile Post Number: 4 Registered: 12-2006 |
Elie, I tried your suggestion about saving the correction points for color correction by saving to Notepad and then changing from .txt to .colorcorrect, but when I tried to load it into the transformation, it brought up a warning that it was an illegal color correction file. What do you suppose I have done wrong? thanks for any help Phil Elrod | ||
| Phil Elrod New member Username: Phile Post Number: 5 Registered: 12-2006 |
Elie, Disregard my earlier message; I realize my mistake and sorry for wasting your time. Phil | ||
| den Member Username: Den Post Number: 186 Registered: 03-2006 |
An 'HSL Saturation Contrast Mask' and ColorCurve's HSL,S application are discussed in PWP and High Impact sRGB Color - Part 2. May your ‘good’ images be made ‘better’; your ‘better’ images be made ‘superior’; and your ‘superior’ images be made ‘excellent’!…. | ||
| John D. Baker Member Username: John_d_baker Post Number: 7 Registered: 03-2006 |
Once again this board proves it's value. This is a very nice idea. The symmetric remapping makes immediate sense once it's pointed out. Thanks for posting. | ||
| Allan Farnsworth Member Username: Allanf Post Number: 23 Registered: 05-2004 |
Okay, now I've set up both the Velvia and Hi Color files and saved them in my profiles folder (love them both, by the way). Now the question I have is how do I get the Color Correct transform to default to this folder instead of going to the last folder opened by PWP? Can't they be separate or are they unfortunately bound together? | ||
| Dieter Mayr Member Username: Dieter_mayr Post Number: 444 Registered: 11-2004 |
Allan Currently PWP does not allow default folders for the various setting files, like *.colorcorrect or others. It has be a long time wish here in the forum, but unfortunately it did not make its way to PWP so far. My solution to avoid too much searching was to create folders directly below root on my pictures harddrive, so they can be easily reached by clicking on the hd and then the appropriate folder. Dieter |
