Kind regards,
Hi, I have a problem with outputed raster size and i am trying to find best solution for it on behalf of quality and size. I tried to play with compression, but it does not help as expected (it helps but I need less size of file). Of course, played also with interpolation methods at the same time. I found transformer RasterResampler, but do not understand how it differs from compression using featureType parameters. Is that the same thing actually?
Page 1 / 1
Btw, while FME writes data to jpeg2000 format I got error called ECW Exception ("If you receive this message, pelase report it at "hhtp://www.ermapper.com/support/supportform/ ..etc..).
I repeated It few times and each time error appeared at line:
"JPEG2000 writer: Compleated 28.94% of intermediate processing"
Does anyone know this kind of problem?
That's a good question about compression. I didn't know the difference so I asked our raster developer.
If you set the compression to 0 then you will get a lossless compression. It won't be compressed much, but it will be less than a raw image.
Otherwise the compression is lossy. Our developer says "basically you have to throw away some information, and what that is depends on the compression method".
For jpeg2000 it's a Wavelet Compression, which is quite different to just a reduction in resolution. In fact it looks quite complicated to me.
Resampling is much more simpler to understand. I guess that makes me think it will be less efficient, but I can't say for sure.
As for the error message, can you submit this as a support case? I know it says to contact ermapper.com but I think we should at least look at it first.
Regards
Mark
Mark Ireland
Product Evangelist
Safe Software Inc
Ok Mark, I submited this case to support and hope they can help me somehow! Thank you.