[gdal-dev] NITF read slow in python

[Even Rouault]

Le mercredi 06 août 2014 19:36:44, John_Lunzer a écrit :
> I have some not so big NITF files (10000x7000 16bit) that I am reading
> using Python. Using the ReadAsArray() method of the data opened via
> gdal.Open() it takes about 50 seconds to load a single band. Reading this
> same file in GeoTIFF format takes about 2.7 seconds by comparison.
> 
> Does anyone have a clue why the NITF files are taking so much time to read
> to Numpy arrays?
> 

Is the NITF file JPEG or JPEG-2000 compressed ?

> 
> 
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