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volume measurement -+/- mean

PLZ EXPLAIN  TOTAL VOLEME =1908.47 ± 128.45 ( METER CUBE)   MEANS 

A] 1908 + 128.45 IS CORRECT VOLUME

B] 1908 - 128.45  IS CORRECT VOLUME

C] OR ELSE WHAT IS CORRECT

 

 

  

 

 

 

 

It means the true  volume could be anything between 1,779.55 cubic meters and 2,036.45 cubic meters. This " +/- " form represents the uncertainty of determining volumes using photogrammetry with limited accuracy.

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BUT THERE IS MUCH DIFFERENCE.    

1779 ,1908 & 2036 CUBIC METERS. 

WE NEED ACCURATE. WHAT IS TO BE DONE.

 

 

Mahesh

I am not an expert but it seems your GSD may be too large. I am getting uncertainties of about +/-1% using a 2cm GSD. Whereas you are getting +/-6.5%. 

A 1% tolerance is acceptable for my circumstance but may not be for you.

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