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It is interesting to note that this review has suggested a focal length of 8.7 mm for the Samyang fisheye, perfectly matching the calculation made by PTGUI (I have made a PTGUI test on an other set of images and reached the same value) !!! http://michel.thoby.free.fr/SAMYANG/Early test report.htm
by hermer-blr
Mon May 14, 2012 12:06 pm
 
Forum: Using Autopano Pro / Autopano Giga
Topic: SAMYANG 8 mm - configuration: 7,8, 9 or 10 mm ????
Replies: 11
Views: 2490

OK - Panorama successful !

And the distortion correction was good enough so that I could go to ghost hunting through .png files without creating artefact or misalignments in the panorama. The pano will now be definitive after tripod removal (by image processing) !
by hermer-blr
Sat May 12, 2012 10:24 pm
 
Forum: Using Autopano Pro / Autopano Giga
Topic: SAMYANG 8 mm - configuration: 7,8, 9 or 10 mm ????
Replies: 11
Views: 2490

Try PTGUI Pro: I mean, use PTGUI pro to let it define the focal length. I did it and it gave 8.67 (Samyang Fisheye used with a Nikon D5100). I have now set this value in APG to perform a new panorama optimization and I am waitng for the result. The achieved RMS is cat. 3.5 (not wonderful), but, comp...
by hermer-blr
Sat May 12, 2012 3:51 pm
 
Forum: Using Autopano Pro / Autopano Giga
Topic: SAMYANG 8 mm - configuration: 7,8, 9 or 10 mm ????
Replies: 11
Views: 2490

To gkaefer: 1/ I used 8 mm (see answer to Mediavets). 2/ Regarding the location of the NPP, my reference is here : http://www.hugha.co.uk/NodalPoint/Index.htm As you can see, it is a few millimeters from the golden ring, towards the lens surface, ie opposite to the direction you propose. I should ve...
by hermer-blr
Sat May 12, 2012 1:22 pm
 
Forum: Using Autopano Pro / Autopano Giga
Topic: Panorama detection taking a lot of time
Replies: 11
Views: 1626

To mediavets : 1/ Multiple viewpoint correction: maybe because I am not so sure of my head calibration that I have been using for the first time last week during a vacation trip in New-York. Old habit also, because until now (before the Samyang fisheye) I was shooting all my panoramas handheld (howe...
by hermer-blr
Sat May 12, 2012 1:13 pm
 
Forum: Using Autopano Pro / Autopano Giga
Topic: Panorama detection taking a lot of time
Replies: 11
Views: 1626

Hum ! I must confess that without a solution to efficiently render my panorama I gave a try to PTGUI pro. Without any knowledge of the software and without any previous experience of it, I could easily stitch my panorama perfectly and using the mask function perform all the maskings I wanted without...
by hermer-blr
Fri May 11, 2012 10:45 pm
 
Forum: Using Autopano Pro / Autopano Giga
Topic: Panorama detection taking a lot of time
Replies: 11
Views: 1626

New test made by changing both detection quality from high to standard and ransac model from homography to simiarity; then, the panorama detection is very fast ! I however confirm after having performed an other panorama optimization that the distortion correction is rather bad. When I edit the pano...
by hermer-blr
Fri May 11, 2012 9:36 pm
 
Forum: Using Autopano Pro / Autopano Giga
Topic: Panorama detection taking a lot of time
Replies: 11
Views: 1626

To be accurate: Input: 8 16 bit tif files x 16 MPixels - Samyang fisheye Time taken for panorama detection: 28 minutes !!! Most of the time was taken by "control point validation" - Note that, on my computer, the panorama stitching to 12000 x 6000 points takes about 30 minutes (not really more than ...
by hermer-blr
Fri May 11, 2012 8:38 pm
 
Forum: Using Autopano Pro / Autopano Giga
Topic: Panorama detection taking a lot of time
Replies: 11
Views: 1626

I always perform raw to tif conversion prior to using APG. My images are 16 bit tif images.

But 10 mn for the detection of a panorama with 8 fisheye images, is that normal ??? My configuration is 3 years old, with 4 Gbytes, dual core processor...
by hermer-blr
Fri May 11, 2012 5:57 pm
 
Forum: Using Autopano Pro / Autopano Giga
Topic: Panorama detection taking a lot of time
Replies: 11
Views: 1626

Desappointed by Samyang fisheye assembly of spherical panoramas

I am somewhat desappointed by the results achieved with a Samyang fisheye (that I bought 2 weeks ago), compared to the results achieved with my wide angle lens... The RMS for the wide angle lens was very good (<1 for handheld panoramas) and the stitching result was perfect. The best RMS I achieve wi...
by hermer-blr
Fri May 11, 2012 12:36 pm
 
Forum: Using Autopano Pro / Autopano Giga
Topic: Desappointed by Samyang fisheye assembly of spherical panoramas
Replies: 1
Views: 530

Panorama detection taking a lot of time

For the time I have been using APG 2.6 (maybe it started earlier...), I have noticed that the time taken to perform a panorama detection is very very very long. My memory from the past is that it took some tens of seconds, while now it easily takes 10 minutes ! My most recent panoramas only comprise...
by hermer-blr
Fri May 11, 2012 12:27 pm
 
Forum: Using Autopano Pro / Autopano Giga
Topic: Panorama detection taking a lot of time
Replies: 11
Views: 1626

Regarding the method, it is based on the following principle: Pre-processing the pictures, using the overexposed one as a baseline and including the portions (advertisements....) from the other pictures prior to APG ? In order to detail it somewhat: - I used a tripod and panoramic head - I shot 3 br...
by hermer-blr
Thu May 10, 2012 10:06 am
 
Forum: Using Autopano Pro / Autopano Giga
Topic: Times square by night - Looking for an efficient workflow
Replies: 3
Views: 912

It seems that nobody felt inspired to give me some help. So, I did it my own way, ie according to 3. It took me a lot of time, but, according to the previews I got, the result (after having removed all the ghosts) should be fine !
by hermer-blr
Wed May 09, 2012 7:59 pm
 
Forum: Using Autopano Pro / Autopano Giga
Topic: Times square by night - Looking for an efficient workflow
Replies: 3
Views: 912

OK - Sorry for my erroneous shortcut "CCD". - I meant "sensor".

Both cameras share the same 16 Mpixel sensor.
by hermer-blr
Wed May 09, 2012 7:56 pm
 
Forum: Autopano - Bugs & discussion
Topic: Nikon D5100 - Camera database
Replies: 2
Views: 697

Mon appareil est un APS-C. Donc, le sensor size est 24/1.5 x 36/1.5, soit 16 x 24 !!!

Note : avec ma façon de procéder, j'ai le tripode sur la photo : je l'élimine par traitement d'image (fonction clonage de Gimp).
by hermer-blr
Wed May 09, 2012 4:21 pm
 
Forum: Utilisation d'Autopano Pro / d'Autopano Giga (FR)
Topic: Impossible de détecter nadir + zénith
Replies: 5
Views: 1869

Photomatix est évidemment la référence (payante, mais pas chère) en la matière. En cas de décalage (HDR à  main levée), on peut même demander au logiciel d'aligner les images....
by hermer-blr
Sat May 05, 2012 11:19 am
 
Forum: Utilisation d'Autopano Pro / d'Autopano Giga (FR)
Topic: petit souci d'assemblage
Replies: 4
Views: 1439

Nikon D5100 - Camera database

I was surprised to note in the camera database that the NIKON D5100 has the same setting as the NIKON D5000. As the D5100 has the same CCD as the D7000, I would have guessed for those two cameras (5100 and 7000) sharing the same setting.

Am I wrong ???
by hermer-blr
Sat May 05, 2012 10:21 am
 
Forum: Autopano - Bugs & discussion
Topic: Nikon D5100 - Camera database
Replies: 2
Views: 697

Thanks for support.


I can confirm that having the AE version of the lens the fisheye is automatically recognized by APG, based on....

...the fact that I have incorporated the lens in the lens database (it was not there).
by hermer-blr
Sat May 05, 2012 10:18 am
 
Forum: Using Autopano Pro / Autopano Giga
Topic: Samyang Fisheye parameters
Replies: 7
Views: 1781

Hypothèse: l'anti fantômes agit localement, en fonction des caractéristiques propres des images assemblées. Si tes décalages sont locaux, ca peut en être la cause. Dans ce cas, la bonne solution serait de faire le traitement HDR avant l'assemblage.
by hermer-blr
Sat May 05, 2012 10:01 am
 
Forum: Utilisation d'Autopano Pro / d'Autopano Giga (FR)
Topic: petit souci d'assemblage
Replies: 4
Views: 1439

Times square by night - Looking for an efficient workflow

During my vacations, I shot a spherical panorama (3 brackets) of Times Square, NY, at night. I used a Samyang fisheye (8 shots x 3 brackets) and a Tripod+pano head. Analysing the images, the overexposed one is clearly the best for the background, buildings and walking people. There are many digital ...
by hermer-blr
Sat May 05, 2012 9:21 am
 
Forum: Using Autopano Pro / Autopano Giga
Topic: Times square by night - Looking for an efficient workflow
Replies: 3
Views: 912

Bonjour, J'utilise aussi un sigma 10-20 (avec un Nikon APS-C). Dans mon cas, je fais 24 photos (appareil en mode portrait): - 8 en visant à  l'horizontale - 8 en visant à  + 45° - 8 en visant à  - 45° Je suis conscient de faire trop de photos, mais n'utilisant pas (jusqu'à  présent) de tête panorami...
by hermer-blr
Fri May 04, 2012 5:54 pm
 
Forum: Utilisation d'Autopano Pro / d'Autopano Giga (FR)
Topic: Impossible de détecter nadir + zénith
Replies: 5
Views: 1869

No help available on this matter ? Alexandre ? It is really annoying to have the automatic pano detection jammed by this.
by hermer-blr
Fri May 04, 2012 2:21 pm
 
Forum: Using Autopano Pro / Autopano Giga
Topic: Automatic pano detection
Replies: 4
Views: 1222

Thanks for those answers. I note from your comments that 9 mm (while the lens is labelled 8 mm) may be worth testing.. But my question, in fact, was not this. In the APG settings, you have to define your lens CORRECTION settings. Until now, I set them to automatic and it worked fine with my wide ang...
by hermer-blr
Thu May 03, 2012 6:03 pm
 
Forum: Using Autopano Pro / Autopano Giga
Topic: Samyang Fisheye parameters
Replies: 7
Views: 1781

Samyang Fisheye parameters

I just bought a Samyang fisheye (Nikon AE version) and I would like which lens correction settingsI should use for it. Until now, with my wide angle lens, I had put every parameters to "automatic" and it worked fine !
by hermer-blr
Thu May 03, 2012 12:02 pm
 
Forum: Using Autopano Pro / Autopano Giga
Topic: Samyang Fisheye parameters
Replies: 7
Views: 1781

Automatic pano detection

First thing I do when I come back home with a lot of pictures and panos is to perform an automatic panorama detection of all the panoramas in the folder I want to process. However, all the bracketed pictures (and the multiple pictures of a scene) are also detected as panoramas. Is there a way to avo...
by hermer-blr
Mon Apr 30, 2012 4:06 pm
 
Forum: Using Autopano Pro / Autopano Giga
Topic: Automatic pano detection
Replies: 4
Views: 1222
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