Current Server Time: 23:39 (Central Europe)

#apertus IRC Channel Logs

2016/01/01

Timezone: UTC


23:14
pozitron
joined the channel
00:28
Mined
left the channel
06:05
davidak
left the channel
06:28
Bertl_oO
off to bed now ... have a good one everyone!
06:28
Bertl_oO
changed nick to: Bertl_zZ
08:11
pozitron
left the channel
10:40
tyrone
joined the channel
10:40
tyrone
hi all
10:57
danieel
left the channel
11:01
danieel
joined the channel
13:55
alexML
hi, happy new year
13:55
alexML
intracube: are you talking about Maxime_Slap32.raw12 ?
13:56
alexML
I don't have any FPN on the green and blue channels in highlights on this sample
14:15
alexML
ah, wait, you are showing the red channel in all 3 images
14:29
intracube
alexML: yep
14:30
intracube
left is roughly normalized values, middle is very non-linear highlight adjustment, right gaussian blur
14:33
alexML
here's my quick try: https://dl.dropboxusercontent.com/u/4124919/bleeding-edge/apertus/highlights/Maxime_Slap32_red_histmatched_to_green.jpg
14:34
alexML
I applied some FPN reduction in highlights and then histogram match to the green channel, which is unclipped
14:34
alexML
so, indeed, there is highlight data that can be exploited
14:34
alexML
maybe not at full resolution, but it's much better than hard clip
14:47
alexML
updated the image with a third view (blurred highlights) - same link
14:47
intracube
nice. FPN is almost completely gone
14:48
intracube
especially considering how much the highlights have been adjusted
14:49
intracube
it also looks like this footage was shot when the camera setup was still clipping the blacks slightly
14:50
alexML
replace slightly with aggresively :P
14:50
intracube
was being polite ;)
14:53
intracube
some prodding in GIMP: http://i.imgur.com/F8yN2qJ.png
14:55
alexML
not bad
14:55
se6astian|away
changed nick to: se6astian
14:56
intracube
too saturated in the darker areas though
14:57
alexML
this black clipping also changes the colors in the dark area
14:57
intracube
everything rolls down to orange
14:58
alexML
much better to start with an image with proper black level
14:58
intracube
for sure
15:03
se6astian
good day
15:03
se6astian
new years resolution: https://pbs.twimg.com/media/CXns-KhVAAEsxwf.jpg:large
15:03
se6astian
or actually 4096x3072 :P
15:46
davidak
joined the channel
17:02
Bertl_zZ
changed nick to: Bertl
17:02
Bertl
morning folks!
17:05
davidak
good "morning", Bertl :D
18:07
troy_s
intracube: 1) Just use a damn matrix, enough with the hacking. 2) It is _nondata_.
18:08
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.
19:36
intracube
troy_s: I'm going to look at the matrix!
19:37
troy_s
intracube: Please do. There aren't that many peeps capable with OCIO around, so having more is important.
20:50
jucar
joined the channel
20:54
jucar
left the channel
20:55
Bertl
off for now ... bbl
20:55
Bertl
changed nick to: Bertl_oO
21:22
se6astian
I am off as well
21:22
se6astian
good night
21:22
se6astian
changed nick to: se6astian|away
22:57
masplund
left the channel
22:59
jorom
left the channel
22:59
mgielda|away
left the channel
22:59
se6astian|away
left the channel
22:59
se6astian|away
joined the channel
22:59
mot_
left the channel
22:59
_florent_
left the channel
22:59
aPinky
left the channel