class Report1288 does not support pixel_area input

[mwuetschner]

The class Report1288 has no input for pixel_area.
This value is required in the function call to Results1288(...) to process an pixel size related results.

Should we add this to one of the info_ fields, a new info_ or as an additional function parameter?

[fariza]

we have the pixel_size in the basic info of the report, can we assume square pixels and just generate the pixel_area using this value?