To calculate the HFOV you need to know the focal length that was used when taking the picture, as well as the size of the sensor. The smaller the focal length, the bigger the HFOV. The bigger the focal length, the smaller the HFOV. That info as Bruno said is usually stored in the EXIF of the pictures. It looks like in your case, you're either shooting with a camera that doesn't write that info in the EXIF, or you've lost that info by processing your pictures in an image processing software. I don't really see without the EXIF info any software can calculate the HFOV...
2009/11/13 Bob <[email protected]> > Thanks Bruno, > > > HFOV is the horizontal angle of view (or Horizontal Field Of View) of > > the photo. This can often be calculated from the camera EXIF > > metadata, but some cameras don't write enough information to the > > photo, and some photo editing software discards EXIF data. > > How to calculate the HFOV? > Can PanoTools or Hugin calculate ? > > I generate the init pto file using the Autopano-sift-C, > but when I use autooptimiser to process the init pto file,I got the > same error: > > HFOV of image leftImage.jpg invalid, trying to read EXIF tags > Unable to read EXIF data from opened file:leftImage.jpg > EXIF reading failed, please specify HFOV with -v > > > Cheers! > > Bob > > > On 11月11日, 上午4时58分, Bruno Postle <[email protected]> wrote: > > 2009/11/10 Bob <[email protected]> > > > > > > > > > Is there any more steps to get a more optimized panorama? > > > > > panomatic --output Output.pto --fullscale --ncores 4 --sieve2width 5 > --sieve2height 5 --sieve2size 2 leftImage.jpg rightImage.jpg > > > (Autopano-sift-C --ransac on --refine-by-middle Output.pto > leftImage.jpg rightImage.jpg) > > > > You could use ptomerge to combine control points from both panomatic > > and autopano-sift-c. You can use cpclean and/or celeste_standalone to > > remove 'bad' control points before optimisation. > > > > > autooptimiser -o OutputOptim.pto -a -l -s Output.pto > > > nona -o out -m TIFF_m OutputOptim.pto leftImage.jpg rightImage.jpg > > > enblend -o finished.tif out0000.tif out0001.tif out0002.tif > > > > > BTW,the autooptimiser sometimes failed and says: > > > HFOV of image leftImage.jpg invalid, trying to read EXIF tags > > > Unable to read EXIF data from opened file:leftImage.jpg > > > EXIF reading failed, please specify HFOV with -v > > > > HFOV is the horizontal angle of view (or Horizontal Field Of View) of > > the photo. This can often be calculated from the camera EXIF > > metadata, but some cameras don't write enough information to the > > photo, and some photo editing software discards EXIF data. > > > > -- > > Bruno > > -- > 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]<hugin-ptx%[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
