Author Topic: Chronos V0.3.2 Beta  (Read 255 times)

foobar

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Chronos V0.3.2 Beta
« on: June 07, 2019, 02:56:38 PM »
In this release we are making changes to improve the camera's image quality by addressing the vertical banding issue that some users have reported and adding some new features to the power controller to make unattended operation of the camera a little easier.

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   |     Chronos V0.3.2 Changelog       |
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Notable Changes:
  • Automatic ADC offset calibration on resolution changes, which should reduce column banding across a wider temperature range.
  • 3-point column calibration to improve column matching.
  • Add a storage tab to the util menu to view, eject and format the attached storage devices.
  • Speed boost at most resolutions, with a top speed of 1069fps at 1280x1024, and 40420fps at 320x96.
  • Configurable automated power-on and off depending on the AC adaptor status.

Minutae:
  • Factory black calibration is now user accessible from the Factory tab of the util window.
  • The software update button has been moved to the storage tab of the util window.
  • Shipping mode to disable power-on by battery until an AC adaptor is attached.

Updating Your Camera:
  • Extract the .zip file into the root directory of a FAT32 formatted USB drive.
  • Turn on your camera and insert the USB drive.
  • From the main window, tap the Util button to open the utility window.
  • As a precaution, tap the Backup Calibration Data button on the utility window before starting the update.
  • When the backup is completed, a pop-up window will be displayed.
  • Tap the Done button to close the pop-up window.
  • From the utility window, tap the Apply Software Update button to begin the software update.
  • A warning message will be displayed, tap the Yes button to confirm and begin the update.
  • During the update, the screen will go blank and an Applying Update message will be displayed.
  • After approximately 60 seconds, the update will be complete and the camera will restart.
« Last Edit: June 07, 2019, 04:11:04 PM by DDR »

foobar

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Re: Chronos V0.3.2 Beta
« Reply #1 on: June 07, 2019, 03:19:30 PM »
Because this update includes some major changes to the calibration routines of the camera, for the best results we recommend re-generating your factory calibration after applying the update. You can do this by navigating to the factory screen and tapping the "Black Calibrate All Resolutions" button.

This procedure should be performed only once the camera has warmed up to its normal operating temperature, and the lens or body cap is in place.


nik282000

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Re: Chronos V0.3.2 Beta
« Reply #2 on: June 08, 2019, 09:17:47 AM »
Update was easy enough and I like the new storage Tab in the utilities.

Black cal at 1x works well but with any more than that I get significantly more banding than 0.3.1 at higher frame-rates. I'll keep poking around to see if anything I do can make it better or worse. I have also noticed that there is some flickering, at higher gain is is more visible but it can be seen at 1x as well.

I also had "No Batt" after the first restart but that has gone away, not really worried about it.

Sorry for all the negative feedback but I am still impressed at the work that is going into the 1.4 and I am glad you guys are still working towards more features!

foobar

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Re: Chronos V0.3.2 Beta
« Reply #3 on: June 08, 2019, 11:07:16 AM »
Can you attach some images to show us what the banding looks like at higher gains and framerates? Does the banding appear to change either for better or for worse after attempting a black cal at those settings?

nik282000

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Re: Chronos V0.3.2 Beta
« Reply #4 on: June 08, 2019, 01:28:02 PM »
I'm going to restore a known good version then try the update again. If I get the same results I'll make some example files for you.

NiNeff

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Re: Chronos V0.3.2 Beta
« Reply #5 on: June 08, 2019, 02:37:12 PM »
Wow, almost 5% speed increase at the lower resolution. And it just feels good to be able to say "it does 40k FPS" instead of "roughly 40k FPS" ;)
Will test the new software soon-ish.

nik282000

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Re: Chronos V0.3.2 Beta
« Reply #6 on: June 08, 2019, 05:39:00 PM »
Ran the camera on an older version and everything looked fine, updated and found the same black calibration issues, so here's what I found.

#0 It only happens at frame rates above ~27kFPS
#1 It gets 10x worse at 4x analog gain, at 1x and 2x the image is pretty good. At 16x I get only gibberish for an image.
#2 The flickering seems to be related, it is most apparent when the vertical banding is present. I haven't measured the period of the flicker yet to see if it is the same at every resolution/fps.

Below I have attached 4 images taken at the 320x96 40420.4fps 20.08us 4x analog gain (worst case scenario but the effect is very similar down to ~27Kfps. I let the camera warm up (it seems to do that a lot faster now, the fan ran at full speed since the update) before taking the images. I had to convert them to PNG because the forum didn't like .TIFF files made by the camera.

0th image is taken before doing a black cal and before doing the factory cal.
1st image is after a black cal but before the factory cal
2nd image is after the factory cal but before doing new black cal
3rd image is after the factory cal and after a black cal

Hopefully this is helpful.

foobar

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Re: Chronos V0.3.2 Beta
« Reply #7 on: June 10, 2019, 12:10:00 PM »
Thank you so much, that does clearly demonstrate an issue with the new calibration routines when operating at high gains. I've been able to reproduce the problem and I'll be looking into it.

nik282000

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Re: Chronos V0.3.2 Beta
« Reply #8 on: June 10, 2019, 04:27:02 PM »
Awesome, glad I could help!

Buddlich

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Re: Chronos V0.3.2 Beta
« Reply #9 on: June 11, 2019, 12:09:23 PM »
40.000 FPS ... awesome how far the camera has come.



... from 21.500 max :D


PS: I also have those problems with the flickering even after black cal. with the higher frame rates.
Also the fan seems to go crazy and goes full power from the first second on...
« Last Edit: June 15, 2019, 02:50:59 AM by Buddlich »