|   | Name | Type | Identifier | Description | Constraints | 
| Input | Grid | Grid (input) | INPUT | - | - | 
| Output | Filtered Grid | Grid (output) | RESULT | - | - | 
 | Minimum Standard Deviation (*) | Grid (optional output) | STDDEV | - | - | 
 | Direction of Minimum Standard Deviation (*) | Grid (optional output) | DIR | - | - | 
| Options | Estimated Noise (absolute) | Floating point | NOISE_ABS | Estimated noise in units of input data | Default: 1.000000 | 
 | Estimated Noise (relative) | Floating point | NOISE_REL | Estimated noise relative to mean standard deviation | Default: 1.000000 | 
 | Weighted | Boolean | WEIGHTED | - | Default: 1 | 
 | Method | Choice | METHOD | - | Available Choices: [0] noise variance given as absolute value [1] noise variance given relative to mean standard deviation [2] original calculation (Ringeler) Default: 1 | 
| (*) optional |