Current Server Time: 02:27 (Central Europe)

#apertus IRC Channel Logs

2018/06/07

Timezone: UTC


01:57
rton
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02:20
Bertl_oO
off to bed now ... have a good one everyone!
02:20
Bertl_oO
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02:58
RexOrCine
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07:55
BAndiT1983|away
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se6astian|away
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08:27
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08:51
se6astian
lab spam removed
09:32
Bertl_zZ
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09:32
Bertl
morning folks!
10:32
BAndiT1983
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10:40
BAndiT1983|away
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11:32
se6astian
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11:48
BAndiT1983
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TofuLynx
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BAndiT1983|away
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rton
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derWalter
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BAndiT1983
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14:13
Bertl
off for now ... bbl
14:13
Bertl
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15:02
BAndiT1983|away
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15:21
BAndiT1983
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16:05
supragya
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supragya
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16:26
BAndiT1983|away
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16:40
supragya
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16:40
supragya
hi BAndiT1983
16:40
BAndiT1983
hi supragya
16:41
TofuLynx
Hey supragya and BAndiT1983 :)
16:41
BAndiT1983
hi TofuLynx
16:41
supragya
could you provide me with a reference of how linearisation table looks in a DNG file?
16:41
supragya
the structure etc.
16:41
BAndiT1983
it's described in several format specifications
16:42
BAndiT1983
http://www.barrypearson.co.uk/articles/dng/specification.htm#linearizationtable
16:42
supragya
DNG's official specification does not describe the structure. It just describes it as one of the tags
16:42
BAndiT1983
https://www.awaresystems.be/imaging/tiff/tifftags/linearizationtable.html
16:43
BAndiT1983
it's a tag, what should it else be?
16:44
supragya
thanks for the links
16:44
supragya
will read and get back to you
16:44
BAndiT1983
just grab some dng, i'Ve posted a page with raw dng files from different camers a couple of days ago
16:44
BAndiT1983
then inspect it with exiftools to get an idea how many values are stored in the tag
16:45
BAndiT1983
probably the tag points to some other offset, where the table is stored
16:47
BAndiT1983
//Linearization Table: unsigned short curve[256]; for (i = 0; i < 256; i++) curve[i] = 255 * pow(i / 255.0, 100.0 / gamma) + 0.5;
16:47
BAndiT1983
https://stackoverflow.com/questions/38183888/libtiff-generating-tiff-ep-profile-2-raw-image-from-pixel-array
16:47
BAndiT1983
maybe this code can help to understand the nature ofit
16:47
BAndiT1983
*of it
16:49
supragya
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supragya
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16:50
supragya
Thanks BAndiT1983, will look into it
17:39
TofuLynx
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supragya
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g3gg0
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RexOrCine|away
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18:35
se6astian|away
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niemand
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niemand
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20:00
g3gg0
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illwieckz
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illwieckz
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21:29
TofuLynx
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21:32
TofuLynx
BAndiT1983: How are you? Any progress regarding building my fork?
21:42
BAndiT1983
hi TofuLynx, haven't inspected your stuff yet, it did build, as it was necessary to help you with the paths
21:59
TofuLynx
Okk :)
22:21
BAndiT1983
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22:28
se6astian
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23:02
TofuLynx
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