Posted: Sun Feb 17, 2013 4:39 pm
Curvemeister allows you to make a mask within the program. You can choose any channel from RGB,the K from CMYK, HSB and LAB to make the mask. The Mask channel allows you to adjust the "hardness" of the mask by adjusting the ends of the curves. You can even curve the mask channel for more advanced effects. This is a black and white channel based on the contents of the original channel that serves as a "filter" through which your adjustments pass.
I selected the b channel from LAB because it controls the Yellow / Blue axis in the color space. While the fin looked magenta it was actually measured as more blue. I measured it with a hue clock added to the frame by Alt-Clicking on the image within Curvemeister. Once I saw how blue it was by the numbers I narrowed my channel selection to channels that allow me to isolate blue. The b channel in LAB makes the blues look black so I inverted it so that they would be white. then I adjusted the slope of the curve to make everything but the fins and some specular areas of the mask to be as black as possible.
Once you have the mask you make some very aggressive moves in the actual color channel as shown in the screen shots..
Let me know if you need more information...
Greg
I selected the b channel from LAB because it controls the Yellow / Blue axis in the color space. While the fin looked magenta it was actually measured as more blue. I measured it with a hue clock added to the frame by Alt-Clicking on the image within Curvemeister. Once I saw how blue it was by the numbers I narrowed my channel selection to channels that allow me to isolate blue. The b channel in LAB makes the blues look black so I inverted it so that they would be white. then I adjusted the slope of the curve to make everything but the fins and some specular areas of the mask to be as black as possible.
Once you have the mask you make some very aggressive moves in the actual color channel as shown in the screen shots..
Let me know if you need more information...
Greg