Hi,
I am trying to make a dataset for my application with MNIST dataset and eDVS. I am displaying MIST dataset on my computer screen and recording the same with eDVS but i get a lot of "noise spikes" also. I saw a video online and they seemed to have really good quality "spike video" see here. I tried tinkering with backgroundactivityfilter but didn't help much. My video looks like this. Any help in this regard will be appreciated. Having a little bit of noise if fine but my video seemed to have a lot of "noise spikes". I have another video of hand waving but that seemed perfectly fine.
Last edit: ruthvik vaila 2017-05-18
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Thanks for asking Ruthvik. I bet your monitor is not set to full
brightness. Typical LCDs use PWM backlight control. If you set to full
brightness the modulation is turned off. Could you try this? Try it also
in a laptop. On mine setting full brightness always removes the flicker.
But it will depend on type and age of the display. Let us know how it
works out and good luck.
Tobi
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They seem to have the contrast (FS) set at 6, at which point the noise spikes will be a lot less apparent. If you understand where the noise comes from you'll be able to minimise it with lighting and biasing. Have a read of this:
Hi,
I am trying to make a dataset for my application with MNIST dataset and eDVS. I am displaying MIST dataset on my computer screen and recording the same with eDVS but i get a lot of "noise spikes" also. I saw a video online and they seemed to have really good quality "spike video" see here. I tried tinkering with backgroundactivityfilter but didn't help much. My video looks like this. Any help in this regard will be appreciated. Having a little bit of noise if fine but my video seemed to have a lot of "noise spikes". I have another video of hand waving but that seemed perfectly fine.
Last edit: ruthvik vaila 2017-05-18
Thanks for asking Ruthvik. I bet your monitor is not set to full
brightness. Typical LCDs use PWM backlight control. If you set to full
brightness the modulation is turned off. Could you try this? Try it also
in a laptop. On mine setting full brightness always removes the flicker.
But it will depend on type and age of the display. Let us know how it
works out and good luck.
Tobi
They seem to have the contrast (FS) set at 6, at which point the noise spikes will be a lot less apparent. If you understand where the noise comes from you'll be able to minimise it with lighting and biasing. Have a read of this:
https://inilabs.com/support/hardware/biasing/#h.pyglv4mdwx4u
Thank you, that solved my problem!