Kakadu JP2000 reader

Michael Aye kmichael.aye at gmail.com
Mon Nov 25 17:50:44 EST 2013



On Friday, November 22, 2013 6:10:52 PM UTC-8, Stefan van der Walt wrote:
>
> On Sat, Nov 23, 2013 at 4:00 AM, Michael Aye <kmicha... at gmail.com<javascript:>> 
> wrote: 
> > If this is the driver that is exposed by GDAL, it's far too slow and 
> crashy 
> > for HiRISE images. 
>
> These images look like they're about 1GB in size.  Do you want to read 
> the entire image into memory?  How large would that NumPy array be? 
> Are you interested in only loading a specific portion of the image? 
>
> Hi Stéfan,
I'm usually not interested in reading the whole image into memory, but 
would like to successively scan through the image in portions. But even 
that used to crash with the HiRISE images using open source JP2000 drivers, 
maybe because they use an exceptional harsh compression algorithm.
Do I see it correctly, that the io.imread interface does not yet support 
partial reading of an image?

Michael
 

> Stéfan 
>
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