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Each of these options is equivalent to the exclusive and inclusive modes, respectively, but with a final step that inverts the resulting mask. Toggling the polarity button of a mask inverts its values (subtracts the original value from 1.0).įinally within the “combine masks” combobox you may select the exclusive & inverted or inclusive & inverted options. This is governed by the polarity buttons that you find close to the individual channels. We gain maximum flexibility by allowing an additional inversion step for each individual mask. exclusive and inclusive inverted modes Using the above combination methods alone would still be rather limiting. Once a pixel is fully included by a mask (its value is 1.0) there is no way for another mask to exclude it again. inclusive Inclusive mode first inverts each individual mask (subtracts its value from 1.0), multiplies the inverted masks together, and finally inverts the combined mask once again.įor a given pixel, the final mask will have a value of 1.0 if any of the individual masks are 1.0 at that location and it will only have a value of 0 if all masks have a value of 0 at that location.Īny individual mask can include a pixel by setting its value to 1.0, regardless of what the other masks do. Once a pixel is excluded by a mask there is no way for another mask to include it again. The “combine masks” combobox contains the following options, defining how the drawn and parametric masks will be combined: exclusive A straightforward method of combining masks, exclusive mode multiplies together the individual pixel values from each of the component masks.įor a given pixel, the final mask will have value of 0 if any of the individual masks are 0 at that location and it will only have a value of 1.0 if all masks have a value of 1.0 at that location.Īny individual mask can exclude a pixel by setting its value to 0, regardless of what the other masks do. There are two main elements which control how individual masks are combined: the polarity setting of each individual mask (defined by the plus or minus buttons) and the setting in the “combine masks” combobox. Drawn and parametric masks can be used in combination to form a single mask that can be applied to a module.