Settings and Macros/TMIColor Description
From VFXPedia
[ Main Manual Page ]
- Other macro tools in this category:
- [ColorFill]
- [InvertColor]
- [InvertedBC]
- [LuminanceControl ]
- [PrimaryGrade]
- [SubtractBGColor]
- [TMI Color]
| TMIColor_v02-2 | Download |
This macro allows you to adjust the color temperature and green/magenta tint of an image.
Development History and Discussion on PigsFly
The formula for this so-called TMI system is based on Nuke, where the temperature slider will adjust the gain of red and blue equally while leaving green unchanged. The magenta/green slider will affect the green channel most but also red and blue. Intensity affects all three channels equally.
The values of the three sliders are translated into multiplication factors for the RGB channels, which means that this macro only works correctly in a linear color space.
Main Inputs
The following inputs appear on the tool's tile in the Flow Editor:
- Input
- Source image. Required.
Controls Tab
Moving this slider to the right will tint the image in a cooler color temperature while decreasing this value will result in a warmer color temperature.
Formulas: Red Gain = 1 - T/2, Blue Gain = 1 + T/2.
Moving this slider to the right will tint the image magenta. Moving it to the left will result in a greenish tint.
Formulas: Red Gain = 1 + M/3, Green Gain = 1 - M*2/3, Blue Gain = 1 + M/3.
Affects the gain of all three color channels. However, it doesn't translate directly to the gain sliders found in other color correction tools.
Formula: RGB Gain = 1.0 + Intensity.
These sliders modify gamma instead of gain using the same formulas.
As with all color correction tools, this is needed for images that have an alpha channel.
--Tilt
