Hello,
jo thanks for the hint. I have been able to "adjust"
src/common/imageio_rawspeed.cc. after applying below small change the
Monochrom DNGs are displayed properly (not sure if overall darktable is
handling the data correctly now).
i am new to darktable with no idea of what evil whitchcraft i have
applied here :)
marcus
diff --git a/src/common/imageio_rawspeed.cc b/src/common/imageio_rawspeed.cc
index d9226a0..4c27a75 100644
--- a/src/common/imageio_rawspeed.cc
+++ b/src/common/imageio_rawspeed.cc
@@ -221,7 +221,7 @@ dt_imageio_open_rawspeed_sraw(dt_image_t *img,
RawImage r, dt_mipmap_cache_all
for( int k = 0; k < 3; ++k )
((float *)buf)[4 * dt_imageio_write_pos(col, row, raw_width,
raw_height, raw_width, raw_h
// ((float)raw_img[row*(raw_width + raw_width_extra)*3 +
col*3 + k] - black) * scale;
- ((float)raw_img[row*(r->pitch/2) + col*3 + k] - black) * scale;
+ ((float)raw_img[row*(r->pitch/2) + col + k] - black) * scale;
#endif
return DT_IMAGEIO_OK;
On 11/29/2013 11:25 PM, schmidtfrog wrote:
> Hello,
>
> thanks for the hints!
>
> yes, rawstudio can open the file
> (https://www.dropbox.com/s/qo4v5hilv85myjp/snapshot2.jpg).
>
> I am not sure how the image information is stored in the DNG and how
> it is processed by darktable. I will try to have a look in
> imageio_rawspeed.
>
> marcus
>
>
>
>
> On 11/29/2013 02:58 AM, johannes hanika wrote:
>> heya,
>>
>> weird that it appears three times. doing some wrong bayer pattern
>> interpolation would mean to oversmooth details, but three copies
>> would be some sort of scanline/pixel storage order problem.
>>
>> anyways, i think some related modules would be:
>>
>> src/iop/temperature.c (whitebalance)
>> src/iop/demosaic.c (demosaicing)
>>
>> both of them should effectively pass through the data, the first one
>> could potentially need to promote it from 1x uint16_t per pixel to 1x
>> float per pixel, and the latter one should promote it to 4x
>> float/pixel so the rest of the modules can work on color data as they
>> expect it.
>>
>> can you open the image in rawstudio? those three copies look like
>> it's opened as an already-demosaiced color image that is wrongly
>> interpreted as 3 floats/pixel where we only get one.
>>
>> might be necessary to adjust src/common/imageio_rawspeed.cc to
>> understand that (in this case white balance and demosaic are probably
>> already doing the expected passthrough).
>>
>> cheers,
>> jo
>>
>>
>>
>> On Thu, Nov 28, 2013 at 1:38 PM, schmidtfrog <[email protected]
>> <mailto:[email protected]>> wrote:
>>
>> Hello (for the first time),
>>
>> I have tried to open some DNGs from a Leica M Monochrom in Darktable
>> (almost latest git master). Seems like some trouble due to the
>> fact that
>> a Bayer filter is missing in the cam. The actual image appears three
>> times (see below screenshot).
>>
>> https://www.dropbox.com/s/qpy4j481y20rdzk/snapshot1.jpg?n=223299317
>>
>> Unfortunately I am not familar with darktable functions (had only a
>> short look into the sources).
>>
>> Nevertheless I would be happy if someone has a hint which
>> function/files
>> are worthwhile to check.
>>
>> Marcus
>>
>>
>>
>>
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>
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