[Digikam-users] Some other questions about RAW importing tool

Gilles Caulier caulier.gilles at gmail.com
Sat May 30 12:15:03 BST 2009


2009/5/30 Tobias Schula <tobias at schula.org>:
> Am Donnerstag 28 Mai 2009 10:41:15 schrieb Gilles Caulier:
>
>> Raw import to divised to 2 part :
>>
>> 1/ demosaicing using libraw algorithms.
>> 2/ post processing using digiKam core algorithms
>>
>> Both are 2/ do not depand of 1/ : you can adjust postprocessing
>> without to run demosaicing. digiKam store demosaiced image in memory.
>> Post processing is generally faster than demosicing. This is why it's
>> can be computed in live (with a delay of 500ms).
>>
>> But of course if you change something in demosaicing settings all need
>> to be done again: 1/ and 2/. As demosaicing is really slow, an
>> "update" button is present in GUI.
>>
>> Note : to compute faster demosaicing, you need to install libgomp and
>> recompile libkdcraw. demosaicied computation will be parallelized, but
>> you need at least double core CPU (:=)))
>
> So if it benefits from parallelization, why not using the GPU to accelerate
> the process? I assume it then would be a lot faster. Are there any plans to
> implement this in the medium term?

This can be done only in LibRaw. Please report your wish to www.libraw.org

Gilles



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