[Digikam-users] Digikam internal precision?

[Greg Kennedy]

But would it not help, say if you were doing repeatedly lots of 
operations, to prevent loss of quality due to imprecision in 8-bit?  If 
the 8-bit numbers were expanded to 16 bit (say mul. by 256) then you 
could do all kinds of operations on them, then save the result back as 
8-bit rounded or truncated.

I don't know if the effect is severe or not.  Just an idea I had.

-Greg

Gilles Caulier wrote:
> There is no advantage to convert 8 bits to 16 bits. digiKam convert
> JPEG to PNG as 8 bits.
>
> Anyway, you can switch 8 to 16 bits in editor to Colors/Depth menu
> entry. But currently, colors histogram is not adjusted to fill whole
> generated by high precision conversion.
>
> If somebody as a good algorithm to do it, i can introduce it in
> digiKam core (there is a file in bugzilla about this subject)
>
> Gilles
>
> 2010/1/18 Greg Kennedy <kennedy.greg at gmail.com>:
>   
>> Images come out of my camera as 8-bit JPEG files.  Does Digikam
>> convert them to a higher-precision internal format when using the
>> editing tools?  If so, is there a way I can adjust the precision?  If
>> not, would that be a useful feature?
>>
>> -Greg
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