The area of the channel display serves as an optical analysis of your image.
Tip: Pay attention that the real-time calculation mode in the top tool bar is active, so that the display can remain updated.
Here you can select from seven display modes.
a) Displays the whole image, meaning all colour channels
This display shows the resulting denoised image with all three colour channels: red, green and blue.
b) Displays the brightness (luminance)
The brightness of the image (depending on the selected denoising colour space)
c) Chrominance display (Displays the colour map)
In the chrominance display one can see very quickly, if there is colour noise in your motive or not. If the colours are “agitated” you should use the effect denoising–colour with a stronger intensity.
d) Red channel
In the red channel the red parts of the image receive an increased brightness.
e) Green channel
In the green channel you see the green parts of the image receive an increased brightness.
f) Blue channel
In the blue channel you see the blue parts of the image receive an increased brightness.
g) Difference between the source and result image
The difference display shows the removed noised areas of the image.
What counts here: The fewer details to be seen on the difference display, the better the denoising worked (for fewer image details were influenced by the denoising).
As soon as the difference display was activated, a control will appear with which the contrast of the difference can be increased. Pictures that have little noise the difference is hard to see. In this case simply increase the contrast of the display.
The contrasts of displays from the image illustrates the functions that have been used on it.