This is a way of combining multiple fine-tuning analyses (related to the same brightness range) in the noise profile equalizer.
In order to measure the dependence between the noise and brightness of an image (that is usually done during fine-tuning) it is necessary to analyze many uniform areas in an image. Each individual analysis determines the dependence in some narrow range of brightness values. The noise profile equalizer reflects this dependence with a number of sliders that correspond to the ranges of brightness individually for each RGB color channel.
Initially, all the sliders are at their default positions. Analyses change their positions according to characteristics of noise encountered.It is possible that different analyses taken in the same brightness range will affect the same slider. In this case, the slider's behavior is determined by the Combination of last fine-tuning analyses option:
- Take the maximum value (recommended)
The equalizer sets the slider's RGB values to the maximum of the last two analyses (aggressive filtration, maximum noise removal);- Take the minimum value
The equalizer sets the slider's RGB values to the minimum of the last two analyses (conservative filtration, minimum image changes);- Take the average value
The equalizer sets the slider's RGB values to the average of the last two analyses;- Take the last value
The equalizer sets the slider's RGB values to the current analysis.
Turn this option on to make Neat Image save a noise sample from the analyzed image area into device noise profile (a *.dnp file). This will increase the size of the *.dnp file but will also improve the compatibility with the future versions of the software (Neat Image will be able to re-build the profile using the saved noise sample).
Turn this option on to let Neat Image display warnings about selected image area during profiling. For example, Neat Image may warn about clipping or non-uniformity detected in the selected image area.