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#apertus IRC Channel Logs

2013/11/22

Timezone: UTC


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06:20
Bertl
off to bed now ... have a good one everyone!
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philippe
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intracube
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S3bastian
good evening
13:28
S3bastian
afternoon?
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13:39
FergusL
hi here
13:40
FergusL
afternoon I'd say
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13:52
leo_m
hi everyone
13:57
FergusL
hi leo_m
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S3bastian
hello!
14:46
Bertl
morning everyone!
14:56
S3bastian
hellO!
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18:09
FergusL
Hey, is tiff a float format ? Cc troy_s
18:09
FergusL
Cc rexbron
18:11
Bertl
The inclusion of the SampleFormat tag in TIFF 6.0 allows TIFF files to handle advanced pixel data types, including integer images with more than 8 bits per channel and floating point images.
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philippe
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Guest22341
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18:31
philippej
Hi everyone !
18:31
Bertl
hey philippej!
18:32
FergusL
thanks Bertl, I knew you were the kind of guy that print and pins all the relevant RFCs just above the computer screen on the wall
18:32
philippej
Bertl, I got a reply from avnet, basically, they will at some point make a new board, but curently they are not yet in the design phase...
18:32
Bertl
FergusL: virtually, yes
18:33
Bertl
philippej: any ideas what the usual cycle for that would be?
18:33
Bertl
i.e. one month design, one month testing? or one year design, no testing?
18:33
philippej
"The only board we have today that would meet your requirements is the ZynQ MMP module AES-MMP-7Z045-G but itâs cost could be prohibitive. We have talked about building a 7015 board but donât have it planned yet so it would be several months before it would be available for sale."
18:34
philippej
"Does the CMV12000 allow you to double the data rate to 600Mbps? This would allow you to use a 32 bit interface to the MicroZed and leave enough pairs available to add an external high speed serializer for the SDI interface. This is probably the best solution we have at this time.
18:34
philippej
I will keep your requirements in mind as we develop the spec for our 7015 boards. "
18:34
Bertl
also the 7045 is a no-go for us, because the WebPack does not cover it
18:34
philippej
I thought already abot it :-(
18:34
philippej
this board is +- $1200
18:35
philippej
is it an option to add an external serdes to the microzed and use half io of the sensor for now? does it make sense technically and economically ?
18:36
Bertl
won't work, we wouldn't even have enough I/O ports port this
18:36
Bertl
i.e. we could use even less lanes from the sensor, but that kind of fails the point
18:37
Bertl
besides, I haven't had a chance to check out the microzed, but that will probably change soon
18:37
philippej
do yo understand like me they are planing a new board in months (not years)?
18:38
Bertl
well, my interpretation is, that it will take 'several' months, which is the usual vague hand-waving for 'some unknown time'
18:39
Bertl
all it means is that it won't be available in the next few months
18:39
philippej
yep
18:41
philippej
I really wanted to find a solution that allows to develop now the software side and provide a lower end (cheaper, less risky) model, while allowing future upgrades ... :-/
18:42
Bertl
as I said, I'm all for it, but I doubt it exists atm
18:42
philippej
yeps
18:43
FergusL
how does one deal with the glossiness of the IT8 paper ?
18:46
Bertl
good question, one suggestion I've seen several times is to use really diffuse lighting and keep objects away from the paper
18:46
FergusL
yes, that's the idea I guess
18:47
philippej
and position the light such as the paper doesn't reflect :-)
18:48
Bertl
well, with diffuse lighting there is no 'light' per se
18:48
FergusL
I wonder if right now it could be a slight bummer for the profiling
18:50
philippej
you just put it enough out of the axis of the camera
18:51
Bertl
which would cause a problem with the uniformity
18:52
Bertl
so you need at least two light sources to get somewhat reasonable results
18:53
Bertl
it helps that the chart is relatively small, so with two larger light sources you have a good chance to illuminate it evenly
18:55
FergusL
I've seen a chart shooting setup once, it had two diffuse light on the sides
18:55
FergusL
camera right in front, more than 2m away for the chart
18:57
Bertl
yep, sounds like a reasonable setup
18:57
Bertl
light sources probably at 45° to the chart normal
18:58
FergusL
yes
18:59
FergusL
from the top of your head, do you remember if the IT8 shot is flipped ?
18:59
Bertl
yes, it is flipped, so that it 'looks' normal
19:00
Bertl
(i.e. the letters are readable)
19:01
FergusL
I see
19:01
FergusL
well it's still important for the debayering
19:01
Bertl
register dump is at the end of the raw data
19:02
FergusL
I know ! it follows the addresses in the cmv doc I guess ?
19:03
Bertl
yes, precisely, 16bit each register from address 0 to 127
19:03
FergusL
ok
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troy_s
FergusL: There may be a float version, but mostly int as I know.