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Bgl size

M

mohsenfff

Messages
56
I want to know if a satellite imagery with different LOD can affect the BGL size?because when I compile an image with different LOD to a "BGL",it becomes so huge in size. Also when I add blend and water mask, the final bgl size becomes too big.
I wonder what are the factors involving the final bgl size.
 
Included LODs certainly affect the bgl size.

The area covered also affects the size, even if blended out.

This can be minimised by using a NullValue = ,,,, argument to remove data that is blended out.

Best compromise is to use this, with Compression of 85 to 90 which gives best combination of resolution and filesize
 
Thank you hcornea
I didn't hear about NullValue = ,,,,.I'll give it a try
and because my main purpos is actually night texture, I don't much care for the image quality of daytime.
So I want to know what is your recommendation? Considering I just want it for night texture. Do you recommend that I use lower LOD like 16 and compile it with higher compressor quality like 85, or I use higher LOD like 18 and compile it with lower compressor quality like 65? Which give me better size versus quality.
Thank you
 
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