On Wednesday, 5 September 2018 at 12:43:40 -0700, jiangjia...@gmail.com wrote: On Wednesday, 5 September 2018 at 12:55:36 -0700, jiangjia...@gmail.com wrote:
Once is enough,especially since you included relatively large images (for email). It would have been better to put all the images on your Google Drive page. > I have 4 pictures taken using canon 5d mark ii and 8mm fisyeye lens. files > can be found > here, > https://drive.google.com/drive/folders/1HpG0k7f9Zg8L-W3fuVrItYqtvZpLNRgY?usp=sharing > > I followed the simple steps on hugin, but the final output looks awful. > > [image: IMG_0429 - IMG_0432.jpg] <about:invalid#zClosurez> Indeed, this is not good. I've put a copy at http://www.lemis.com/grog/Photos/20180906/small/IMG_0429---IMG_0432.jpeg for anybody who is interested in checking. > In contrast, ptgui has no major issues at all. > [image: IMG_0429 Panorama.jpg] <about:invalid#zClosurez> This is better, but still not good. Copy at http://www.lemis.com/grog/Photos/20180906/small/IMG_0429-Panorama.jpeg. There are clear discontinuities round the frame of the “Chicago" poster on the left. > Can anyone help and tell me what I was doing wrong? and how can I > improve the quality? This is really very puzzling. I downloaded the images and stitched them. I expected problems, and I got them. But they were in no way related to your problems. Some look like Hugin bugs: 1. The Exif data clearly show: File IMG_0429.JPG Date taken: Friday, 24 August 2018, 21:12:58 Exposure: 1/4 sec, f/4.0 (EV 6.0), 29/640 ISO Camera: Canon Canon EOS 5D Mark II Lens: Canon EF 8-15mm f/4L Fisheye USM Focal length: 8.0 mm (full frame equivalent: 8 mm) But Hugin still asks for a crop factor. That shouldn't be necessary. I put in 1, of course. Did you? That might be part of the problem. 2. I set "circular fisheye" in the Assistant, and it located control points relatively well, a maximum error of 4.6. But the fast panorama preview looked terrible, full of black: http://www.lemis.com/grog/Photos/20180906/Hugin-1.png. I tried a normal panorama preview and got the same thing. 3. I stitched the panorama anyway, and got a panorama still with black areas, but not nearly as much: http://www.lemis.com/grog/Photos/20180906/small/IMG_0429-IMG_0432-2.jpeg 4. The disturbance was clearly related to the panorama head reaching into the image, so I masked that off. And then, without any further problems, I was able to stitch a reasonable panorama: http://www.lemis.com/grog/Photos/20180906/small/IMG_0429-IMG_0432.jpeg. Clearly it needs cropping, but I deliberately didn't do so. All of these images are available at http://www.lemis.com/grog/photos/Photos.php?dirdate=20180906 I can't see any discontinuities in the final panorama, and I did absolutely nothing to avoid them. So I'm really puzzled how you ended up with such poor results. The project file is at http://www.lemis.com/grog/Photos/20180906/IMG_0429-IMG_0432.pto. Try it and see what you get. TO HUGIN DEVELOPERS: It seems to me that there are bugs involved here, possibly relating to circular fisheye lenses. I take photos with full frame fisheyes on a regular basis, and though I have issues that may be related (and which I will report when I have investigated sufficiently), I have never seen anything like this. In particular the lack of recognition of the field of view and the the initial panorama previews look like bugs to me. Greg -- Sent from my desktop computer. Finger groog...@gmail.com for PGP public key. See complete headers for address and phone numbers. This message is digitally signed. If your Microsoft mail program reports problems, please read http://lemis.com/broken-MUA -- 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 hugin-ptx+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/hugin-ptx/20180906051155.GD76566%40eureka.lemis.com. For more options, visit https://groups.google.com/d/optout.
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