OOF: Finite Element Analysis of Microstructures
/select/modify/despeckle
Synopsis
The purpose of this function is to capture unselected pixels which are not part of the current selection.
Some colors are represented in images by mixing ``microscopic'' textures of pixels so that the ``macroscopic'' color appears to be closer to a specified value. When a selection is obtained through a Burn or RGB Burn operation, pixels which were intended to become part of the current selection can be ``left behind''. Noise in a micrgraph can lead to the same effect.
Despeckle works by asking each non-selected pixel how many of its neighbors are selected. If that number is greater than equal to despeckle's argument, then the non-selected pixel becomes part of the current selection. Despeckle is recursive, so that when a new pixel is selected, the neighbor counts of its neighbors are updated.
Arguments
- neighbors
-
The minimum number of selected neighbors an unselected pixel must have to become part of the current selection . The only reasonable values are 4-8. [26] A value of 4 tends to produce selected regions with unrealistic straight edges. Default: 8
[26] Because despeckle is recursive, values less than 4 would make the selected region grow without bound.
