Quote:
Originally Posted by Stormborec
Code:
converttorgb32
RGBAdjust(rg=...,gg =...,bg=...)
converttoyv12
|
Above is the only example that affects chroma's gamma. The others affect only luma's gamma. gamma_u and gamma_v have no effect -- which is clearly stated in the system documentation for ColorYUV:
Quote:
|
gamma adjusts gamma of the specified channel. A value of 0 is the same as gamma 1.0. When the value is set to 256 it is the same as gamma 2.0. The value is valid down to -256, where it is the same as gamma 0.0. Note: gamma for chroma is not implemented (gamma_u and gamma_v are dummy parameters).
|
So, which gamma are you trying to work with? luma in YUV or chroma in RGB? In YUV, luma and chroma are stored separately. In RGB, "color" and "brightness" are integral.