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#apertus IRC Channel Logs

2018/07/16

Timezone: UTC


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Bertl
off to bed now ... have a good one everyone!
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Bertl
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Kevlar
hi
05:53
Kevlar
Anybody here?
05:53
Kevlar
Just wanted to come by to say keep up the good work
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se6astian|away
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08:05
se6astian
Kevlar: Many thanks! :D
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BAndiT1983|away
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17:19
RexOrCine
Meeting later.
17:19
se6astian
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17:36
supragya
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17:36
supragya
hi BAndiT1983
17:38
BAndiT1983
hi supragya
17:42
supragya
France won... did you side with them? Which was the country you were rooting for?
17:45
BAndiT1983
we were hoping for france, otherwise croatians would be driving and honking like crazy through the streets here ;)
17:46
BAndiT1983
they were still honking and driving, but a lot less then before or like in berlin, which was totally bonkers
17:47
BAndiT1983
saw just one car with french flag and it was resting on the lap of the passenger, they were probably afraid to wave in our city district with so many guys and girls from croatia :D
17:48
BAndiT1983
https://stackoverflow.com/questions/22492886/openmp-how-to-retrieve-the-core-id-in-which-a-thread-is-running
17:48
BAndiT1983
sorry, the link was meant for TofuLynx
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BogdanXOR
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BAndiT1983
*than before
17:49
supragya
hmm... nice to hear....
17:49
supragya
however croatia was real force this time
17:50
BAndiT1983
final game was really good, it was just the second match i've seen in this championship
17:50
BAndiT1983
veryawkward goal was achieved by croatia, just before the goalkeeper
17:51
supragya
didn't really see the stream
17:51
supragya
*watched
17:51
supragya
but I sensed from my adjecent rooms... It was intense
17:51
BAndiT1983
also barely looked at it, as i was preparing food, as some friends came in and we had a very nice evening, but also few laughs about the match
17:52
supragya
seems like you are always prepping food... :)
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BogdanXOR
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17:53
BAndiT1983
a bit of hobby, since my student days
17:56
se6astian|away
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17:57
se6astian
good evening, meeting in 3min
18:00
nmdis199-
Good evening everyone! :)
18:01
se6astian
hello!
18:01
se6astian
again, as usual please pm me now to report/share
18:01
se6astian
in the meantime I can report about last week
18:02
se6astian
GSoC Phase 2 evaluations were due on friday
18:02
RexOrCine
Present.
18:02
se6astian
and proudly I can share that all you students passed phase 2, some with good some with ecellent evaluations :)
18:02
TofuLynx
Hello :)
18:03
se6astian
nmdis199-: your turn
18:03
nmdis199-
Okay!
18:03
nmdis199-
Last week first I re-wrote the code to calculate luminance using my previous tools (dump_raw and load_raw) the code is ../opt/ITI/new_tools -> waveform.c so that all the previous issues could be removed.
18:04
nmdis199-
Then I simply used waveform.c in another called graph.c which calculated luminance (as waveform.c) and then wrote that luminance data into a .txt file named “output.txt”.
18:04
nmdis199-
I calculated luminance value as “0.299*buf[i]+ 0.587* ((buf[i+1]+buf[i+2])/2)+ 0.114*buf[i+3]” as data in frame buffer is of format RG1G2B. The values seems right to me :)
18:04
nmdis199-
After that I copied the txt file via ssh back to my computer to plot the graph using gnuplot. The output.txt contains 3072*1536 i.e 4,718,592 values and when I tried plotting it the gnu interface crashed.
18:04
nmdis199-
So, I plotted luminance of one row of frame buffer (6144 bytes, or 1,536 luminance values) here -> https://imgur.com/a/vMPkZHS
18:04
nmdis199-
Similarly, I tried plotting data for 500,5000, and 10,000 luminance value which can be seen here respectively
18:05
nmdis199-
https://imgur.com/a/kb9Pl5t
18:05
nmdis199-
https://imgur.com/a/FUKQ0AY
18:05
nmdis199-
https://imgur.com/a/8H63rWj
18:05
nmdis199-
I'll try to do some more work regarding plotting
18:05
nmdis199-
and have already started regarding vectorscope tool
18:05
nmdis199-
I am also in contact with alex to discuss more about it
18:05
nmdis199-
That's all for this week :)
18:06
TofuLynx
Where did you plot ?
18:06
nmdis199-
using gnuplot on my system
18:06
nmdis199-
it wasn't good to plot it on beta
18:06
TofuLynx
Okk thanks :)
18:06
nmdis199-
you're welcome! :D
18:07
se6astian
very nice, thank you
18:07
se6astian
the images you captured and plotted are essentially dark right?
18:07
nmdis199-
yes, they are.
18:08
nmdis199-
however, whenever I try to plot full data gnu interface crashesh
18:08
nmdis199-
which is a problem.
18:08
se6astian
would be interesting to capture some images with content, like the it8 color chart we installed in front of the beta at the office
18:08
TofuLynx
Do you know why that happens?
18:08
se6astian
any error message?
18:08
nmdis199-
no, no error message. I assume it is because the data is really large? Not sure though
18:09
nmdis199-
it pops a window but the whole window is black it shows nothing
18:09
nmdis199-
and then ubuntu hangs
18:09
nmdis199-
I'd like to have more information on it8 color chart whenever you're free <se6astian>
18:10
se6astian
sure, its basically this image: https://www.image-engineering.de/content/products/charts/te258/images/TE258.jpg
18:10
nmdis199-
okay!
18:10
se6astian
right, lets debug this gnuplot problem separately, maybe Bertl_oO also has some ideas
18:11
se6astian
supragya your turn!
18:11
nmdis199-
yes, I guess will do that tonight.
18:11
supragya
Hi
18:11
supragya
So this week I was able to get some DNG out from the fabricated MLV file
18:11
supragya
This DNG has some issues with color which should not be very hard to solve...
18:12
supragya
It's magenta like and I am working on making it conform to the way MLV system wants it
18:12
supragya
The progress was shared with mentors g3gg0 and BAndiT1983
18:13
supragya
Also, the progress was a bit slow in last couple weeks, sorry for that... Company recruitment interviews were going on
18:13
supragya
Got software engineering role at Cisco
18:14
supragya
Hope to get the DNG problem sorted this week to move on to make new MLV blocks for linearization tables etc
18:14
supragya
That's all from my side...
18:14
TofuLynx
Cisco? That's great! :)
18:15
nmdis199-
Congratulations supragya ! :D
18:16
supragya
ty
18:16
se6astian
great, many thanks
18:17
se6astian
was the original source file a raw12 I assume right?
18:17
supragya
yes it is
18:17
se6astian
https://wiki.apertus.org/index.php/Raw2dng#Further_Notes
18:18
se6astian
if the raw12 was captured with an older version of cmv_snap3 the magenta tint is typical for having swapped lines (even/odd)
18:18
se6astian
maybe that could be the issue
18:18
se6astian
but maybe its something else
18:18
supragya
it's more of a different error
18:19
supragya
not like this
18:19
supragya
it's file writing error i presume on my end
18:19
se6astian
right
18:19
supragya
It is the intern's photo... so I guess that one does not have the issue you are talking about (Fredrick)
18:20
se6astian
it possibly has the issue
18:21
supragya
well, ill check and will mail you if problem persists
18:21
BAndiT1983
supragya, write data out and try to read it with cpp challenge code
18:21
supragya
s/ill/i'll
18:21
ymc98_1
Hello everyone. Nothing substantial to report for the week. Thank you.
18:21
supragya
BAndiT1983: what do you mean? to read raw12 using the cpp challenge code?
18:22
supragya
it is the exact photo I used in my CPP challenge code... worked great there...
18:22
BAndiT1983
yep, raw12 data out of your test dng file
18:23
supragya
I am not sure on how to extract the raw12 from dng
18:23
supragya
there is no offset fixed, even if there is i don't know the number
18:24
BAndiT1983
try to load it in OC and there you can read the tags maybe better
18:24
supragya
I'll try... but imo... there is no need for that... there may be... idk
18:24
Bertl_oO
ymc98_1: why not? :-)
18:25
supragya
I'll check and report back
18:25
se6astian
supragya: report done?
18:25
supragya
yes, se6astian
18:25
supragya
Thank you all
18:26
se6astian
you are welcome
18:26
se6astian
felix_: your turn
18:27
felix_
i have finished the layout of the axiom sdi externsion board yesterday :) it still needs to be reviewed though
18:27
Bertl_oO
did you happen to make gerbers?
18:28
felix_
yep
18:28
Bertl_oO
excellent, url?
18:28
felix_
21:33 < felix_> Bertl: http://sigsegv.notmysegfault.de/intern/AXIOM-photonSDI-hw.zip the gerber export. i hope i checked the right boxes for the drill files
18:28
felix_
i did some slight changes today, but those shouldn't make much difference
18:29
felix_
the design files are here https://github.com/felixheld/AXIOM-photonSDI-hw you need to use the symbols from the kicad symbols repository on my github though; haven't had time to upstream those
18:29
felix_
i also did a fresh export of the schematics http://sigsegv.notmysegfault.de/intern/AXIOM-photonSDI-hw.pdf
18:30
felix_
the design should probably be reviewed before it goes into production though
18:32
felix_
i find it a bit difficult to do the review myself, so it would be great if there would be someone else to also have a look
18:33
felix_
i think that was all i wanted to write
18:34
se6astian
great, thanks for the update
18:34
se6astian
TofuLynx: your turn
18:34
TofuLynx
Okay :)
18:35
felix_
i uploaded a current version of the gerber files right now
18:35
TofuLynx
Last week I was a bit busy, as I had to pile things up to move to my summer house, but I managed to have some progress
18:36
TofuLynx
The task is researching and implementing OpenCL
18:36
TofuLynx
And I created the base OpenCL file, which is used to initialize and load images into cl_mem (OpenCL memory objects )
18:38
TofuLynx
I tested it and it runs without any problems. Now the next step is to run Kernel. So, I started today creating a kernel code. I will do some basic blurring kernel code which should make the unit test easier to evaluate the output
18:38
TofuLynx
However, my mentor tested the OpenMP code on his VM and noticed some strange errors
18:38
TofuLynx
errors in image debayering, which have a lot of noise
18:39
nmdis199-
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18:39
TofuLynx
I wasn't able to replicate it on my machine, even with my cores capped at two cores
18:39
TofuLynx
Which is strange
18:40
nmdis199-
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18:40
TofuLynx
So, this week, I have to investigate those issues with BAndiT1983, and, if everything goes well, to have a finished implementation of Bilinear Debayer in OpenCL
18:40
ymc98_1
The setup time and hold time issues still persist for the transceiver for MachXO2. I modified the design and reduced the operating frequency to half. I am still looking for other solutions.
18:41
TofuLynx
That's all, se6astian :D
18:41
se6astian
thanks!
18:42
nmdis199-
be back later :)
18:42
se6astian
another quick update from me: vup and anuejn visited us in Vienna over the weekend for development and collaboration, so that was nice :)
18:42
TofuLynx
That's cool!
18:43
se6astian
anyone else have anything to share/report?
18:45
se6astian
right, then I conclude this weeks meeting
18:46
se6astian
feel free to chat/discuss anything again now :)
18:46
se6astian
nmdis199-: ping me if you want to know more about the IT8 chart
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se6astian
off to bed
21:42
se6astian
good night
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se6astian
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