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#apertus IRC Channel Logs

2018/06/07

Timezone: UTC


00:57
rton
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01:20
Bertl_oO
off to bed now ... have a good one everyone!
01:20
Bertl_oO
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01:58
RexOrCine
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06:55
BAndiT1983|away
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se6astian|away
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07:27
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07:51
se6astian
lab spam removed
08:32
Bertl_zZ
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08:32
Bertl
morning folks!
09:32
BAndiT1983
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09:40
BAndiT1983|away
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10:32
se6astian
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10:48
BAndiT1983
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10:50
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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13:13
Bertl
off for now ... bbl
13:13
Bertl
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14:02
BAndiT1983|away
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14:21
BAndiT1983
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15:05
supragya
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supragya
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15:26
BAndiT1983|away
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15:40
supragya
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15:40
supragya
hi BAndiT1983
15:40
BAndiT1983
hi supragya
15:41
TofuLynx
Hey supragya and BAndiT1983 :)
15:41
BAndiT1983
hi TofuLynx
15:41
supragya
could you provide me with a reference of how linearisation table looks in a DNG file?
15:41
supragya
the structure etc.
15:41
BAndiT1983
it's described in several format specifications
15:42
BAndiT1983
http://www.barrypearson.co.uk/articles/dng/specification.htm#linearizationtable
15:42
supragya
DNG's official specification does not describe the structure. It just describes it as one of the tags
15:42
BAndiT1983
https://www.awaresystems.be/imaging/tiff/tifftags/linearizationtable.html
15:43
BAndiT1983
it's a tag, what should it else be?
15:44
supragya
thanks for the links
15:44
supragya
will read and get back to you
15:44
BAndiT1983
just grab some dng, i'Ve posted a page with raw dng files from different camers a couple of days ago
15:44
BAndiT1983
then inspect it with exiftools to get an idea how many values are stored in the tag
15:45
BAndiT1983
probably the tag points to some other offset, where the table is stored
15:47
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;
15:47
BAndiT1983
https://stackoverflow.com/questions/38183888/libtiff-generating-tiff-ep-profile-2-raw-image-from-pixel-array
15:47
BAndiT1983
maybe this code can help to understand the nature ofit
15:47
BAndiT1983
*of it
15:49
supragya
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supragya
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15:50
supragya
Thanks BAndiT1983, will look into it
16:39
TofuLynx
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supragya
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g3gg0
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RexOrCine|away
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se6astian|away
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niemand
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niemand
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niemand
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g3gg0
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illwieckz
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illwieckz
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illwieckz
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20:29
TofuLynx
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20:32
TofuLynx
BAndiT1983: How are you? Any progress regarding building my fork?
20:42
BAndiT1983
hi TofuLynx, haven't inspected your stuff yet, it did build, as it was necessary to help you with the paths
20:59
TofuLynx
Okk :)
21:21
BAndiT1983
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21:28
se6astian
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22:02
TofuLynx
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