"Utilities->Filter" is a tool to perform some overlay operations between two files.
The algorithm has the following options: Max, Min, Supplement, Select, Mask, +, -, *, /
| • | Max: create a new 3dr file whose pixel value is the larger value of the respective pixels in the two input files. |
| • | Min: create a new 3dr file whose pixel value is the smaller value of the respective pixels in the two input files. |
| • | Supplement: use the pixel values in the second input file to supplement those in the first input file. |
| • | Select:select pixels in the first input file on a pixel-by-pixel basis so that the respective pixels in the second input file satisfy the selection condition. You need to set the selection condition by setting the Value field. |
| • | +, -, *, /: performs the algebra calculation between the two input files. |