| -num peaks | the number of peaks to extract (default is 3). 
| peaks | the number of peaks |  | 
| -direction phi theta | the direction of a peak to estimate. The algorithm will attempt to find the same number of peaks as have been specified using this option. 
| phi | the azimuthal angle of the direction (in degrees). |  | theta | the elevation angle of the direction (in degrees, from the vertical z-axis). |  | 
| -peaks image | the program will try to find the peaks that most closely match those in the image provided. 
| image | an image containing the true peaks to be estimated. |  | 
| -threshold value | only peak amplitudes greater than the threshold will be considered. 
| value | the threshold value |  | 
| -info | display information messages. | 
| -quiet | do not display information messages or progress status. | 
| -debug | display debugging messages. | 
| -help | display this information page and exit. | 
| -version | display version information and exit. |