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Here you can choose one of the picture’s RGB channels. The currently active channel is shown in the canvas and updated according to your selection. “Min. value” and “Max. value” are, by default, the pixels’ intensities. They are spread over the available minimum and maximum range of a parameter but, in case of need, this range can be clipped by entering new values. The shades of the image channel are then spread over the given settings.
Min. value/Max. value
The grey shades of the loaded image will be transferred into values ranging from “Min. value” to “Max value”. So, the lowest grey tone will get the value from “Min. value”, and the highest grey tone receives the value from “Max. value”. All the other grey scales are calculated automatically between the given minimum and maximum.
Please bear in mind that the maximum value is 1.0 and “Min. value” cannot be greater than “Max. value”. This feature is also very interesting if you see problems like local instabilities or exploding particles. This can often be observed with very high “Particle friction” settings. In such a case, simply decrease “Max. value”, e.g. to values around 0.1.
Min. frame / Max. frame
These values are important for image sequences. You are able to specify a certain frame range that is used for parameter mapping. Simply enter the desired start and/or stop value and the frames outside of this range will be ignored.
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