HueKeyer node
This documentation is for version 2.0 of HueKeyer (net.sf.openfx.HueKeyer).
Description
Compute a key depending on hue value.
Hue and saturation are computed from the the source RGB values. Depending on the hue value, the various adjustment values are computed, and then applied:
amount: output transparency for the given hue (amount=1 means alpha=0).
sat_thrsh: if source saturation is below this value, the output transparency is gradually decreased.
Inputs
Input |
Description |
Optional |
|---|---|---|
Source |
No |
Controls
Parameter / script name |
Type |
Default |
Function |
|---|---|---|---|
Hue Curves / |
Parametric |
amount: sat_thrsh: |
Hue-dependent alpha lookup curves:
amount: transparency (1-alpha) amount for the given hue
sat_thrsh: if source saturation is below this value, transparency is decreased progressively.
|