Re: [CinePaint] masks; detail 8 vs. 16+ bits
Bob Friesenhahn <[email protected]>
| Newsgroups | gmane.comp.video.cinepaint.user |
|---|---|
| Message-ID | <[email protected]> |
On Wed, 12 Mar 2008, Frank Peters wrote:
> After downloading the NEF file, I converted to PNM format using
> dcraw:
>
> dcraw -v -w -c -4 -q 3 -o 0 DSC_1180.NEF > DSC_1180.pnm
I notice that the image is very very noisy. There must not have been
enough light for the camera. Some filtering is useful in order to
improve the appearance:
dcraw -c -a -H 5 -q 3 -4 -w DSC_1180.NEF | \
gm convert - -enhance -resize '50%' -sharpen 0x0.5 -gamma 2.2 \
-quality 85 DSC_1180_enhance.jpg
or
dcraw -c -a -H 5 -q 3 -4 -w DSC_1180.NEF | \
gm convert - -noise 1.8 -resize '50%' -sharpen 0x0.5 -gamma 2.2 \
-quality 85 DSC_1180_noise1.8.jpg
does ok. Note that these commands also reduce the image size by a
factor of two since the smaller image looks better. :-)
Bob
======================================
Bob Friesenhahn
[email protected], http://www.simplesystems.org/users/bfriesen/
GraphicsMagick Maintainer, http://www.GraphicsMagick.org/
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