Re:Accurate Image Alignment and Registration Using OpenCV
by gliptic on Wednesday March 09, 2022 @08:51AM
(#30614352)
I'm not sure what you mean. Mechanical shutters have no upsides I'm aware of :). Astro cameras use electronic shutters.
EDIT: The dithering, or offsetting, is done by moving the telescope slightly between exposures. During exposures you want it to track the object you're photographing as accurately as possible. I imagine vibrations are a detriment even in the Pixel phone processing. It would be better if the phone could move instantly in slightly different directions and take steady raw photos in each.
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Re:Accurate Image Alignment and Registration Using OpenCV
by vanderZwan on Wednesday March 09, 2022 @09:01AM
(#30614452)
Ah, I was thinking of amateur astrophotography - although these days you can just set the mechanical shutter in many consumer DSLRs to stay open too I think.
Re:Accurate Image Alignment and Registration Using OpenCV
by galangalalgol on Wednesday March 09, 2022 @09:24AM
(#30614680)
I think maybe you were considering the vibrations a source of noise for compressed sensing? For CS to work well you generally want to know the convolved noise. So a super accurate accelerometer might be able to measure random vibrations and do even better when they are present than absent. Not sure if phone accelerometers are that good.