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#apertus IRC Channel Logs

2018/06/07

Timezone: UTC

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01:57
rton
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02:20
Bertl_oO
off to bed now ... have a good one everyone!
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02:20
Bertl_oO
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02:58
RexOrCine
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06:18
BogdanXOR
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07:47
BogdanXOR
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07:55
BAndiT1983|away
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08:04
se6astian|away
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08:27
BogdanXOR
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08:29
BogdanXOR
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08:51
se6astian
lab spam removed
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09:32
Bertl_zZ
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09:32
Bertl
morning folks!
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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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11:50
TofuLynx
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12:10
BAndiT1983|away
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12:48
rton
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12:49
derWalter
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13:49
BAndiT1983
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14:13
Bertl
off for now ... bbl
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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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16:05
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
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16:40
BAndiT1983
hi supragya
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16:41
TofuLynx
Hey supragya and BAndiT1983 :)
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16:41
BAndiT1983
hi TofuLynx
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16:41
supragya
could you provide me with a reference of how linearisation table looks in a DNG file?
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16:41
supragya
the structure etc.
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16:41
BAndiT1983
it's described in several format specifications
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16:42
BAndiT1983
http://www.barrypearson.co.uk/articles/dng/specification.htm#linearizationtable
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16:42
supragya
DNG's official specification does not describe the structure. It just describes it as one of the tags
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16:42
BAndiT1983
https://www.awaresystems.be/imaging/tiff/tifftags/linearizationtable.html
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16:43
BAndiT1983
it's a tag, what should it else be?
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16:44
supragya
thanks for the links
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16:44
supragya
will read and get back to you
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16:44
BAndiT1983
just grab some dng, i'Ve posted a page with raw dng files from different camers a couple of days ago
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16:44
BAndiT1983
then inspect it with exiftools to get an idea how many values are stored in the tag
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16:45
BAndiT1983
probably the tag points to some other offset, where the table is stored
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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;
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16:47
BAndiT1983
https://stackoverflow.com/questions/38183888/libtiff-generating-tiff-ep-profile-2-raw-image-from-pixel-array
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16:47
BAndiT1983
maybe this code can help to understand the nature ofit
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16:47
BAndiT1983
*of it
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16:49
supragya
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16:50
supragya
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16:50
supragya
Thanks BAndiT1983, will look into it
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17:39
TofuLynx
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17:42
supragya
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17:50
g3gg0
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17:53
RexOrCine|away
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18:35
se6astian|away
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19:48
niemand
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niemand
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niemand
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20:00
g3gg0
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20:02
illwieckz
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illwieckz
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illwieckz
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illwieckz
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21:29
TofuLynx
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21:30
niemand
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21:32
TofuLynx
BAndiT1983: How are you? Any progress regarding building my fork?
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21:42
BAndiT1983
hi TofuLynx, haven't inspected your stuff yet, it did build, as it was necessary to help you with the paths
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21:59
TofuLynx
Okk :)
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22:21
BAndiT1983
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22:28
se6astian
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23:02
TofuLynx
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