Current Server Time: 01:38 (Central Europe)

#apertus IRC Channel Logs

2016/01/01

Timezone: UTC


00:14
pozitron
joined the channel
01:28
Mined
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07:05
davidak
left the channel
07:28
Bertl_oO
off to bed now ... have a good one everyone!
07:28
Bertl_oO
changed nick to: Bertl_zZ
09:11
pozitron
left the channel
11:40
tyrone
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11:40
tyrone
hi all
11:57
danieel
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12:01
danieel
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14:55
alexML
hi, happy new year
14:55
alexML
intracube: are you talking about Maxime_Slap32.raw12 ?
14:56
alexML
I don't have any FPN on the green and blue channels in highlights on this sample
15:15
alexML
ah, wait, you are showing the red channel in all 3 images
15:29
intracube
alexML: yep
15:30
intracube
left is roughly normalized values, middle is very non-linear highlight adjustment, right gaussian blur
15:33
alexML
here's my quick try: https://dl.dropboxusercontent.com/u/4124919/bleeding-edge/apertus/highlights/Maxime_Slap32_red_histmatched_to_green.jpg
15:34
alexML
I applied some FPN reduction in highlights and then histogram match to the green channel, which is unclipped
15:34
alexML
so, indeed, there is highlight data that can be exploited
15:34
alexML
maybe not at full resolution, but it's much better than hard clip
15:47
alexML
updated the image with a third view (blurred highlights) - same link
15:47
intracube
nice. FPN is almost completely gone
15:48
intracube
especially considering how much the highlights have been adjusted
15:49
intracube
it also looks like this footage was shot when the camera setup was still clipping the blacks slightly
15:50
alexML
replace slightly with aggresively :P
15:50
intracube
was being polite ;)
15:53
intracube
some prodding in GIMP: http://i.imgur.com/F8yN2qJ.png
15:55
alexML
not bad
15:55
se6astian|away
changed nick to: se6astian
15:56
intracube
too saturated in the darker areas though
15:57
alexML
this black clipping also changes the colors in the dark area
15:57
intracube
everything rolls down to orange
15:58
alexML
much better to start with an image with proper black level
15:58
intracube
for sure
16:03
se6astian
good day
16:03
se6astian
new years resolution: https://pbs.twimg.com/media/CXns-KhVAAEsxwf.jpg:large
16:03
se6astian
or actually 4096x3072 :P
16:46
davidak
joined the channel
18:02
Bertl_zZ
changed nick to: Bertl
18:02
Bertl
morning folks!
18:05
davidak
good "morning", Bertl :D
19:07
troy_s
intracube: 1) Just use a damn matrix, enough with the hacking. 2) It is _nondata_.
19:08
troy_s
Remember, the image doesn't exist alone in some person's basement; it lives in a whole chain of calculated phases where colorimetry matters.
20:36
intracube
troy_s: I'm going to look at the matrix!
20:37
troy_s
intracube: Please do. There aren't that many peeps capable with OCIO around, so having more is important.
21:50
jucar
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21:54
jucar
left the channel
21:55
Bertl
off for now ... bbl
21:55
Bertl
changed nick to: Bertl_oO
22:22
se6astian
I am off as well
22:22
se6astian
good night
22:22
se6astian
changed nick to: se6astian|away
23:57
masplund
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jorom
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mgielda|away
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se6astian|away
left the channel
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se6astian|away
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mot_
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_florent_
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aPinky
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