I never did this math nor thought about it :) but have you already forced a 20k px width image to see what happens?
Thinking about my usual lens (Opteka 6.5mm), I can do the horizontal with 4 images with some overlap. I use the camera in vertical position, so the width is 3456 pixels (Canon T2i). When I click to get the optimal size I usually get around 12k pixels, so it sounds me ok. When I did it with a Sigma 10-20mm@10mm I got around 15/16k pixels width. Cheers, Carlos E G Carvalho (Cartola) http://cartola.org/360 2011/9/26 Calvin McDonald <[email protected]> > Why does Hugin consistently build results much smaller than the dimensions > it gives me if I click "Calculate optimal size"? > > My lens has an angle-of-view of 46 degrees (on the sensor) in the > horizontal direction. > I take 12 images per row. > So of the 46 degrees captured per image, 30 degrees are needed to complete > the pano. > I believe this is approximately a 35% overlap. > This tells me that of each image of the 12 that 65% of the pixels will end > up being used (on average). > My sensor in the horizontal direction is 2,592 pixels. > > My simple mind wants to believe that the resulting stitched image will be > approximately 2,592 * 0.65 * 12 = 20,218 pixels. > But Hugin generates a 13,250 x 6,625 result (or thereabouts). > > When I load an image-set and click on "Calculate optimal size" Hugin sets > the Canvas Size to 19,450 x 9,725. It appears my math is consistent with > what Hugin tells me the "optimal" size is. But without exception when a > pano is complete the X dimension is in the low 13,000 range. > > Would someone kindly explain to me the reason for this difference? > > Thanks > > -- > 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 > -- 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
