On Wednesday, March 4, 2015 at 11:52:44 AM UTC-5, rew wrote: > > The basic idea is that if you have say a 1000x1000 sensor, and take > pictures HALF a pixel off, by taking 4 pictures you can make a > 2000x2000 image. > > The "move the sensor" image stabilization cameras have the hardware to > move the sensor half a pixel in a controlled way. > > Others may need to take "enough" pictures so that you "probably" have a > picture taken with the right offset. > > Then, the next problem arises: If your lens is perfect, each pixel > takes the average of all the image projected on its "square". So if > you take the four images at half pixel intervals, you'd still have a > 2x2 blur in the resulting 2000x2000 image. A sharpening algorithm is > required. > > This is complicated: Modern cameras however don't have RGB sensors for > each pixel, but either red, green OR blue. > > Then... when say light hits each green sensor pixel, but misses the > intervening red or blue pixels, the "recover-the-color" algorithm > would say "GREEN!" when someone with a black-and-white shirt is at > eactly the right (or wrong :-) distance. (it's similar to the wrong > tie on the news phenomenon). Anyway, to prevent this, they make the > lenses or sensors in such a way that it is impossible to focus light > on eactly one pixel. A deliberate defocus. > > So that makes things even more complicated. > > Anyway... hugin should be able to position two images over each other > at subpixel accuracy. This is essential if you cannot control the > sensor at subpixel accuracy. > > I would give hugin the ORIGINAL images. Then tell the remapper that > your output has a high resolution. This will do proper upscaling of > the pixels. > > Enfuse is completely the wrong tool to then combine the results. So > you'll have to find something else to use here. Maybe just averaging > all the images works. Then a sharpening step is necessary. > > Roger. >
I was under the impression that, in enfuse, setting all weights to equal values would result in arithmetic averaging. At least that's how I read the manual. But perhaps it's wrong. -- A list of frequently asked questions is available at: http://wiki.panotools.org/Hugin_FAQ --- You received this message because you are subscribed to the Google Groups "hugin and other free panoramic software" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/hugin-ptx/5830364d-76fd-411d-90a6-47e421c525e2%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
