-h | Prints usage information. |
-v | Verbose output. |
-b | Ordered breadth-first search, darkest images first, default. |
-d | Unordered depth-first search. |
-t | Set maximum translation values, default 30,30. One input value implies equal maximum shift in x & y directions. |
-p | Percent of pixels match, default 10. Higher is better but slower. |
-g | Attempt to reset mean grey values to be equal within matched regions, default. |
-G | Switch off grey-level matching. |
-T | Threshold the input images e.g. to remove spurious lines around the edge. |