Here, [Y.sub.dil] and [Y.sub.er] are the dilation and erosion in the luminance channel
In some cases, the luminance channel
of a color image can make an excellent mask.
In order to model the slow-smoke color, luminance channel
is subtracted from chrominance channel and linear interpolation is performed to fit the range of values to [0,255].
We suggest this is an unintentional error as the opponent color model is usually considered to comprise a luminance channel
and two chromatic channels, brightness having contributions from all three channels.
Gain Channel--serves as the setting of the luminance channel
The 39 submodels are exploited to detect image splicing in luminance channel
The method keeps the image chromatic contrast, which could be lost in case of a simple luminance channel
Rather, I synthesize a luminance channel
by combining all my other filtered shots into a monochrome result that can be used as a luminance image.
Once I am happy, I then integrate the Luminance channel
with the RGB data using the LRGB Combination tool (Process / Color Spaces / LRGB Combination).
The luminance channel
of HDR image contains information about dynamic range.
Use the H[alpha] image for the luminance channel
, but with its opacity set at less than 50 percent.
If we convert a color exposure to Lab mode and then replace the L channel with a Tech Pan exposure, we should end up with exactly the same color information, but the new, finely detailed luminance channel
will result in a superior image.