This is interesting! It sounds from the video like the cable isn't bypassing the filter, but instead applying a deconvolution filter to the final image to reverse the blur.
Deconvolution is super cool. You can use some deconvolution algorithms in Gimp using the G'MIC plugin. There are a few different ones in the Details section under Sharpening, for example Richardson-Lucy [1] or Gold-Meinel. You can play with blurring an image and then using the deconvolution to remove the blur - it's surprising how much of a Gaussian blur can be removed. I've used it in the past to remove blur from some deliberately blurred 'preview' images. Try the different algorithms as some produce much better results than others, but I forget which.
Deconvolution is super cool. You can use some deconvolution algorithms in Gimp using the G'MIC plugin. There are a few different ones in the Details section under Sharpening, for example Richardson-Lucy [1] or Gold-Meinel. You can play with blurring an image and then using the deconvolution to remove the blur - it's surprising how much of a Gaussian blur can be removed. I've used it in the past to remove blur from some deliberately blurred 'preview' images. Try the different algorithms as some produce much better results than others, but I forget which.
[1] https://en.wikipedia.org/wiki/Richardson%E2%80%93Lucy_deconv...