In tha last couple of days, I experienced very nice photographic wheater. 

Back at home, I found fusel(s) which are suppsed to lay on the digital sensor.

In pricinple, fotofinishing services may be able to "repair" such pics by manual retouche. This is extremely time and cost intensive. More or less, it is not practical to conduct such a task with many pictures. 

You are right, when you think about cleaning the digi-sensor, as avoiding is easier, and cheaper than rework lots of pics individually.

In any case, the capabilty of such a repairing tool would be an enormous benefit for all users a digital sensors camera.

As an "ordinary user without programming knowledge", I'd like to refer on existing technologies to mark out undesired areas of a pic. 

If such an "dust-on-the-sensor" - error occurs, it remains for many exposures more or less the same, of course. 

I suggest, that procedures may "isolate" this disturbing error information just by a mathematical "subtraction". And, in a second step, to subtract this isolated error in a batch-procedure to a every selected picture

Reproducible: Always

Actual Results:  
not existing :-( 

Expected Results:  
an automated (batch) processed pic repair tool to "save" pics