On 11 Dez., 22:22, "Terry Duell" <[email protected]> wrote: > On Mon, 12 Dec 2011 03:43:29 +1100, kfj <[email protected]> wrote:
> > Just a wild idea here: ... > OK, that's an interesting idea. Thanks. Terry, I thought some more about the approach to deblur motion-blurred images by means of 2D-deconvolution. I have doubts the method will work for wide-angle images. Why is that? Applying a convolution kernel to a 2D image is comparable to moving the sensor, while the optical system remains in place. But motion blur comes from moving the whole optical system together with the sensor. As you go more wide-angle, the visible effect of the blur should vary from the image center to the edges. You may be able to deblur sections of the image quite reliably, but fail to deblur the whole image. So I think you might have to model the movement of the whole optical system. To model the blur you could try to superimpose a series of images reprojected to their original projection after applying incremental amouns of yaw, pitch and roll to model the blur's underlying movement (and you might have to add translation, as well). How many images you'd superimpose in the process would depend on how precisely you want to model the process. How this approach could be inverted to deblur the image I can't tell, but maybe one of our resident maths gurus has a word to say on my wild ideas ;-) Just to test my idea, you could try and model a simple blur by superimposing, say, 10 copies of an image, each yawed by the angle equivalent to one pixel (so hfov/width) in the image and compare the result to a 2D blur created by a kernel of ten times .1 in a row. If you see a noticable difference in the outputs, My argument might be valid. The superimposition could be done simply by loading the same image 10 times into hugin, applying the appropropriate yaw to each, and then do an exposure fusion with settings which assign equal quality to all images to trick enfuse into simply averaging them, like choose a big exposure-sigma). What do you say? Kay -- You received this message because you are subscribed to the Google Groups "Hugin and other free panoramic software" group. A list of frequently asked questions is available at: http://wiki.panotools.org/Hugin_FAQ To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/hugin-ptx
