Radarsat-2: offset tracking

[ABraun]

I guess this is related to the issue reported here:

Importing RTC S-1 into QGIS

The different numbers could be due to image stretching. QGIS visually ‘cuts off’ the upper and lower 2.5% of each image for better contrasts while ArcMap uses a different grey value scaling. Have a look in the raster metadata in both programs and you will see that they are the same regarding minimum, mean and maximum values.

Each GIS has its own way of scaling colours so it is not necessarily the whole range which is displayed. Some GIS leave out outliers in the histogram to get better contrasts.