Long exposure images from videos
nithinbekal.com
Long exposure images from videos
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Re: Long exposure images from videos
#2Theoretically, it should be possible to create images from a static video feed that have higher resolution than the video.
Also, it would be interesting to see if an upscaling model can de trained on a specific high-res image (taken e.g. with a dslr) to upscale a video feed of the same place.
Re: Long exposure images from videos
#3This somehow reminds me of Marc Levoy's HDR+ [0] that uses the same exposure time for each shot instead of the conventional bracketing. The technique can take many same short exposure time shots and computationally make the photo brighter (among other HDR effects) with reduced noise, which in a way emulates some benefits of longer exposure time, although not the motion blur effect.
[0] https://blog.research.google/2014/10/hdr-low-light-and-high-...
Re: Long exposure images from videos
#4Theoretically, it should be possible to create images from a static video feed that have higher resolution than the video. Also, it would be interesting to see if an upscaling model can de trained on a specific high-res image (taken e.g. with a dslr) to upscale a video feed of the same place.
> it should be possible to create images from a static video feed that have higher resolution than the video
You can resolve past the compression artifacts and noise, but you can only do higher resolution if the video is not static. Specific techniques from astronomy are things like Bayer Drizzle, to push past the resolution of the sensor itself via slight motion, but a perfectly locked off shot won't get you extra information.