Images often have dirty pixels, that are almost a certain color, usually white. PixelWasher can remove these pixels. The result is the output image is smaller in size, and is easier to edit.
Pixels are replaced based on threshold rules defined by the user. A rule can be simple using "and", "or", and "(" ")" brackets, or a rule can be written in C#. Examples are provided in the "Rule" combo box. Advanced users can use the C# code option to return Color objects with different Alpha values...