#apertus IRC Channel Logs

nice

one thing I've noticed is the FPN-subtract01.tif has noticable vignetting when you increase gain/contrast

probably, and the optics as well I guess

Bertl: there was a lens attached during calibration?!

I'm experimenting with pre-processing the FPN tif to reduce the vignetting

we built a contraption to illuminate the sensor without lens system, but that was rather complicated to use

Bertl: ah I see

more likely it is at the top of the visual area

so it might be up to 768 rows off center

eep

^ + 1

something to do with the capability of the recording device or HDMI interface?

and later switched to a more sane YCbCr encoding

I presume neither nor, i.e. I think that is most likely a snapshot

i.e. taken directly after the sensor, before the image output pipeline

the texture of the FPN also looks shifted in the same direction

the image is most likely 128 pixel off to the left as well

it doesn't appear to be that far out. only a pixel or so

so that will show up as one bad color component in a snapshot

Bertl: yep

then hopefully it would subtract that bit better

intracube: yes, or you can apply the transformation used when the recording was done

off to bed now ... have a good one everyone!

the calibration matrix has therefore emphasis on the primary, with substraction of the other two, to reach e.g. sRGB

Hi there, nice to see that the Magic Lantern announcement seems to bring in a lot of donations! I have a question https://www.youtube.com/watch?v=E_WCZjPI7Bw#t=55 This was shot without an OLPF, right? Please consider adding one that soften the image enough. Nothing worse than over sharpened detail and color moiree. Unless you're going for a cctv look...

http://prolost.com/blog/camcamcam

native speaker maybe?

If you insert a perk in front of EUR75 the Mega and Hyper supporter gets this to? (>> "All of the above") So at the moment there are 19 Buttons and T-shirts and not 5. is this right?

ah good that you remind me to remove the poll on the website :)

done

and/or DP in general instead of hdmi

but yes, from the technical point of view there is nothing which speaks against (e)DP

also I do not think that it supports DP at all, but I might be wrong there

Its royalty free to implement, so that probably weighs up a bit

ah, so in 'alternate' mode, basically using the USB signal pairs for something else :)

last time I checked I found a number of chips, from ST and similar vendors, but all of them required an NDA

but I definitely like the idea

btw, royalfree to implement, yes, but the standard is not available (e.g. DP 1.3)

but the annual membership dues are a little more reasonable, starting with 3.500 USD

3500 USD isnt as bad as paying a per-device royalty. With 3 hdmis that adds up

this whole dslr blog/news sites thing is very disappointing. after having contacted many of them i am starting to believe most of them host ONLY paid articles/advertisements.

welcome legendin!

Saw your email - looking like you have a lot of work on your hands

Well, actually I was going to write "It looks like you have a lot of fun on your hands...."

in any case, it will be both I guess, so right on the spot

I'm more than happy to help if I can, but I am quite time poor - I only get a couple of hours a week to 'play' with stuff.

However, I am working on one little project that might be of use. It is a low bandwidth (200Mb/s) serial bus for connecting buttons, switches, sensors and so on around an FPGA.

What's the data rate from the sensors? about 1GB/s?

with the CMV12k we have 64 LVDS pairs with 600MHz

Oh, 5GB/s... just a little more than I'm use to!

I saw the beta footage. Looks awesome.

our shoe-box sized proof of concept camera

How did you get started in this? is it a research project that has taken off?

apertus exists for quite some time, with the aim to develop FOSS/OH for movie making

I got involved last summer when sebastian was looking for some FPGA programmer to help :)

Nice.

yes, but we are basically matching the MicroZed size there

(joke) You could get the back of the case milled to be a heatsink for the Zynq(/joke)

we thought about that, and I'm sure we will do something similar on the Gamma (a little down the way)

300FPS at 10bit full 4k, for the CMV12000, yes

we probably won't solve the storage problem completely in the Beta, which is designed for an external recording device

I was also taking with somebody who was building something to capture high speed RF (250MB/s for an hour), and it looked like an array of high end SD cards was the only way to go. Or a very high spec PCIe SSD.

but we figured we need at least two SATA 6G SSDs to record raw video

yeah, PCIe is one option, NVMe another and as I said, SATA 6G

The whole professional video market is just a different world, where you can afford to keep content on expensive media because it costs so much to actually obtain it in the first place... quite foreign to me!

hamster: yeah, it was a completely new world for me as well

I'll leave the window open, and keep an eye on things....

no problem, we'll chat later ...

I've just been scanning the logs from 2014-09-14 - where Anton has had pretty much the same conversation we just had :-)

any native speakers around now

I again managed to smuggle some mistakes into the last update posts :)

yeah, always impressive :)

Greetings!

Really excited about this initiative. Finally decided as I was filling out the beta survey that I would like to get involved in Axiom development on a personal basis, and maybe offer modules and other accessories on a professional basis in the future

Been itching to get back to programming and electronics for a while now, but it's hard to say now to film work ;)

certainly seems so yes :)

Im am currently in the process of rummaging through old ideas to see if I can draw some inspiration. There are so many possibilities with the AXIOM that open up possibilities that up until now have been hindered by proprietary or incomplete interfaces. The key is to find the old ideas that were put on the shelf for reasons such as "that won't be possible to integrate with a camera" etc.

I see, well thats exactly the kind of things we were hoping to enable with our approach

And that's what I love about this project. Coming from a linux/oss background, it is quite frustrating at times not to be able to tinker with / hack professional film cameras

:)

Ooh! With an active mount, a software addon could log lens data, time, duration, clip number etc. on the fly and let the on set script add descriptive metadata on eg. a tablet through wifi

pour some processing in there and the addon could search for a frame with the slate and embed a thumbnail in the log as well

Curious as to how the runtime will facilitate such software addons

like this one http://www.bhphotovideo.com/c/product/1073122-REG/inogeni_4k2usb3_4k_hdmi_to_usb.html

se6astian? bertl?

lets say, the one i linked, would it work on a laptop bandwidthwise?

but it does do some data conversion as mentioned on the overview

interesting find

Canon reacts to the AXIOM - ML team up

LOL :)

good night :)