<put algortithm description here>
Input layer
[raster]Overview levels
[string]<put parameter description here>
Default: 2 4 8 16
Remove all existing overviews
[boolean]<put parameter description here>
Default: False
Resampling method
[selection]<put parameter description here>
Options:
Default: 0
Overview format
[selection]<put parameter description here>
Options:
Default: 0
Output layer
[raster]processing.runalg('gdalogr:overviews', input, levels, clean, resampling_method, format)