PanoTools.org Wiki - User contributions [en]

User talk:Erik Krause

2009-06-09T22:23:26Z

Grin: /* A Test */ successful ;-)

== A Test ==
Does one get email if someone writes here?
:You should, unless you deactivate it in the preferences. And you can get email when your watchlist changes, or for some other stuff as well. --[[user:grin|grin]] [[user talk:grin|✎]] 22:23, 9 June 2009 (UTC)

== Zugangskennung ==

Hallo Erik,

Gesetzt den Fall, ich habe mein Passwort nun wirklich vergessen, wie kaeme ich dann wieder hier herein, wenn der automatische Login seinen time-out hat? Ist hier etwas ueber die angegebene email-Adresse vorgesehen. Nicht dass das mir jetzt nicht peinlich waere in so einem Fall, aber bei mir schwirren so viele Zugangskennungen herum, aufschreiben tut man das ja nicht, und seltener benutzte und eher frische fallen dann halt schneller mal dem Vergessen anheim. -- [[User:Klaus|Klaus]] 21:00, 18 December 2007 (CET)
: Log in -> email Password. - Already done...--[[User:Erik Krause|Erik Krause]] 15:41, 20 December 2007 (CET)
:: Dankeschoen. -- [[User:Klaus|Klaus]] 17:29, 20 December 2007 (CET)

== Editierungen ==

Hallo Erik,

*[[How Stitching Works]] moved to [[How stitching works]], mit redirect.
*Die talk pages weisen alle auf [[Talk:Stitching 2008 State of the Art]], hmmm sollte vielleicht alles auf [[Talk:How stitching works]] zeigen, weil Leute besser auf der aktiven Seite landen sollten.
*[[Remapping]] mit Bildern versehen - falls die Seiten nur-Text sein sollen, muesste man sich halt ein neues Lemma fuer die Bilderseite ausdenken.
* Kleinigkeiten noch... -- [[User:Klaus|Klaus]] 14:42, 5 May 2008 (CEST)

: Ok, vielen Dank! Wolltest Du noch "Stitching 2008 State of the Art" in "How stitching works" integrieren? Schön auch, das bebilderte Remapping. Wenn Du mehr Ideen für bessere Illustrationen hast, nur zu. Das Wiki braucht ein bischen frischen Wind! --[[User:Erik Krause|Erik Krause]] 16:02, 5 May 2008 (CEST)

:: Das "Stitching 2008 State of the Art" wollte ich gerne so stehenlassen, vielleicht mit einem Verweis auf "How stitching works", was ja daraus hervorgegangen ist. Was ich aber mal mache (hoffe, dass das in der history nicht zu uebel wirkt) - "Talk:How stitching works" als Diskussionsort zu benennen. -- [[User:Klaus|Klaus]] 13:59, 6 May 2008 (CEST)

::: finde ich nicht so gut. Wenn da zweimal fast der gleiche Text ist stiftet das nur Verwirrung, besonders, wenn später mal jemand anderes weiterarbeiten möchte. Die "State of the Art"-Version kann ja in der History bleiben und man kann mit einem Link mit passender oldid darauf verweisen. (Wie z.B. in [[Enfuse#Known_bugs]] der Verweis zur alten Version).

:::: Ich habe mich dazu durchgerungen, die momentane "State of the Art" als Unterseite in meinen User-Bereich zu stellen. Das ist gut genug (auch von der URL), wenn ich das mal als Hinweis referenzieren moechte. "''Wenn da zweimal fast der gleiche Text ist stiftet das nur Verwirrung, besonders, wenn später mal jemand anderes weiterarbeiten möchte.''" Gerade der Aspekt, was die Synchronisierung von Kopien betrifft, ueberzeugt mich. -- [[User:Klaus|Klaus]] 15:19, 6 May 2008 (CEST)
:::: Danke! Trotzdem: Weiter so :-) --[[User:Erik Krause|Erik Krause]] 17:45, 6 May 2008 (CEST)

User talk:Grin

2009-06-09T22:17:55Z

Grin: really fix sign darn

Hopefully I get an email when you write here. :-)
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: I must admit that I don't know. Is it the case on wikipedia? --[[User:Erik Krause|Erik Krause]] 18:30, 9 June 2009 (UTC)
:: Now I know: you do :-) And in addition a reminder next time you log in. --EK
::: Yes it does indeed, and it's the default now in the prefs, fortunately. I'm on some dozen wikis now and it's not really possible to track all the talk pages. But they send email now, which is manageable. --[[user:grin|grin]] [[user talk:grin|✎]] 22:17, 9 June 2009 (UTC)
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User talk:Grin

2009-06-09T22:17:07Z

Grin: fix sig

Hopefully I get an email when you write here. :-)
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: I must admit that I don't know. Is it the case on wikipedia? --[[User:Erik Krause|Erik Krause]] 18:30, 9 June 2009 (UTC)
:: Now I know: you do :-) And in addition a reminder next time you log in. --EK
::: Yes it does indeed, and it's the default now in the prefs, fortunately. I'm on some dozen wikis now and it's not really possible to track all the talk pages. But they send email now, which is manageable. --[[grin]] [[user talk:grin|✎]] 22:17, 9 June 2009 (UTC)
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User talk:Grin

2009-06-09T22:16:14Z

Grin: yes, thanks ;)

Hugin Stitcher tab

2009-06-09T09:49:06Z

Grin: /* File formats */ no exr ldr output now and a warning about using other than tiff in some environments

The rest of [[hugin]] is all about setting up the project and aligning images, the '''Stitcher''' tab is where
the final output file is created.

= Panorama =

Here you can set the output '''[[Projections|Projection]]''' of your project, there are lots
to choose from, each with different advantages and disadvantages:

* [[Rectilinear Projection|Rectilinear]], this is the same projection as a photo taken with a 'normal' camera and lens. Use this if you are just stitching a handful of photographs together with a narrow [[Field of View]] or [[Perspective correction|correcting perspective]] in a single shot.
* [[Cylindrical Projection|Panorama]], actually a simple [[Cylindrical Projection]] as used by traditional rotating panoramic cameras. A good projection for printing a 360 degree panorama, though you may prefer ''Mercator Projection''.
* [[Equirectangular Projection|Equirectangular]], the all purpose format for representing an entire spherical scene. It covers 360 degrees horizontally as well as the [[zenith]] and [[nadir]].
* [[Fisheye Projection|Fisheye]], the same projection as a photo taken with a ''fisheye lens''. Better for representing a wide [[Field of View]] than ''rectilinear'', but in many cases ''Stereographic Projection'' gives less distortion than simple ''fisheye''.
* [[Stereographic Projection|Stereographic]], a ''conformal'' fisheye image. Objects in a stereographic image keep the same shape and show less distortion than simple ''fisheye''.
* [[Projections#mercator projection|Mercator]], a ''conformal'' cylindrical image. A good projection for printing a 360 degree panorama.
* [[Projections#Transverse mercator projection|Trans Mercator]], a ''mercator'' image rotated 90 degrees, suitable for displaying tall or overhead objects.
* [[Projections#sinusoidal projection|Sinusoidal]], an ''equal area'' projection of an entire spherical scene.
* [[Lambert Equal Area Conical Projection|Lambert Equal Area Conical]]
* [[Lambert Equal Area Azimuthal Projection|Lambert Equal Area Azimuthal]]
* [[Albers Equal Area Conic Projection|Albers Equal Area Conic]]
* [[Miller Cylindrical Projection|Miller Cylindrical]]
* [[Panini]]
* [[Architectural]]
* [[Orthographic]]
* [[Equisolid]]
* [[Equirectangular Panini]]

== Field of View ==

This is the horizontal and vertical [[Field of View|angle of view]] of the output image,
clicking '''Calculate Field of View''' will shrink or enlarge the field of view of the
output to fit the arrangement of the input images - The '''Fit''' button in the
[[Hugin Preview window]] does the same thing.

Note that some [[Projections]] have a limited field of view, notably:

* Rectilinear has to be less than 180 degrees both vertically and horizontally.
* Panoramic (cylindrical) has to be less than 180 degrees vertically.
* Stereographic has to be less than 360 degrees both vertically and horizontally.
* Mercator has to be less than 180 degrees vertically.
* Transverse Mercator has to be less than 180 degrees horizontally.

== Panorama Canvas Size ==

Set the '''width''' and '''height''' of your output panorama in pixels. '''Calculate Optimal Size''' will estimate
a size that has about the same resolution as your input images.

Some examples: a ''three megapixel'' image has pixel dimensions of 2048 x 1536, an A4 print at 300 pixels per inch will
have a pixel size of 3500 x 2480, a ''full screen'' spherical [[Equirectangular Projection]] image will have pixel
dimensions of 6000 x 3000 or greater and a ''gigapixel'' image has a pixel size of 32768 x 32768.

Note that the [[interpolation]] used by [[hugin]] doesn't handle downsampling very well, so output images smaller
than about half the size of the ''Optimal Size'' will show [[aliasing]] artefacts. If you want to create high quality
small images, it is better to create an ''Optimal Size'' image in hugin and downsize it later in an image editor such as the [[Gimp]].

== Crop ==

The crop settings allow just a portion of the panorama to be stitched, there are various reasons to do this:

* When [[Perspective correction|correcting perspective]] large areas of the panorama output will be empty anyway.
* Large 'gigapixel' style panoramas can be stitched in sections then blended later.

The cropped-out areas are shown darkened in the [[hugin Preview window]].

== Output ==

Hugin can output 'normal' stitched images, [[exposure blending|exposure blended]] images or high dynamic range ([[HDR]]) images.
The following options determine which kind of image is created, and allow keeping the intermediate images created during the process.

=== Normal ===

If '''Blended panorama''' is enabled then [[enblend]] is used for blending. In the final stitching process [[nona]] reprojects and distorts images to fit, '''enblend''' takes these images as individual [[TIFF]] files and merges them using sophisticated seam positioning and blending. Further '''enblend''' settings can be found in the [[hugin Preferences]].

Enable '''remapped images''' if you want to keep the intermediate images that '''enblend''' uses as input - For example modifying the [[alpha channel]] of these images and then blending manually is one technique for including and excluding people or objects that move between shots.

=== Exposure Blending ===

If '''Blended panorama (enfuse)''' is enabled then hugin will group the input images into exposure stacks by comparing positions, any images with more than 90% overlap are grouped like this. Each of these [[Bracketing|bracketed]] exposure stacks will be [[exposure blending|exposure blended]] with [[enfuse]] and the results stitched together into a panorama with [[enblend]].

Note that for this to work, the scene has to be photographed multiple times using exposure [[bracketing]] and the EV exposure values set either manually in the [[hugin Camera and Lens tab]], automatically from [[EXIF]] data or by optimising exposure in the [[hugin Assistant tab]] or [[hugin Exposure tab]].

Note also that unlike '''Normal''' and '''Merge to HDR''' options where images are exposure corrected as part of the remapping process, enfuse requires that each exposure layer is supplied uncorrected - Hugin takes care of this automatically and will not apply correction in this case.

Enable '''Blended exposure layers''' to additionally stitch each exposure layer into a separate panorama - Useful for manual exposure blending. Note that hugin simply blends any photos with less then 0.2EV exposure difference together into each layer.

Enable '''Remapped images''' to keep the intermediate images supplied to [[enblend]].

=== Merge to HDR ===

If '''Blended HDR panorama''' is enabled then hugin will identify likely [[Bracketing|bracketed]] stacks of images, then create remapped, deghosted HDR images which are then blended with [[enblend]].

Note that like the Exposure blending option above, this generally only makes sense if the scene has been photographed multiple times using exposure bracketing, and the EV exposure values optimised in the [[hugin Exposure tab]].

Enable '''Stacked HDR images''' to keep copies of the remapped HDR images as supplied to enblend.

Enable '''Individual non merged images''' to keep copies of each image remapped in linear colour space before deghosting and merging to HDR.

Click '''Stitch now!''' to generate output panoramas immediately. Selecting '''Save project and send to batch''' adds the current project to the [[Hugin Batch Processor]] stitching queue, note that the queue won't be processed unless this queue manager is running.

= Processing =

[[nona]] is the default '''Remapper''' (stitching engine) supplied with [[hugin]], normally there is no need to
change this or any of the options below.

Set the '''Interpolator (i)''' to change the sampling [[interpolation]]. You probably won't notice
much difference between the various options except that '''Nearest Neighbour''' is fast but with
very low quality. The default of '''Poly3 (bicubic)''' is generally good for most purposes.

[[Cropped TIFF]] files are smaller and more efficient because unused parts of the image are not stored in the file. You should
always '''save cropped images''' unless you need to open them in an image editor without [[Cropped TIFF]] support.

[[enblend]] is the default '''Blender''' for use with [[hugin]], normally there is no need to change this. Additional command-line '''Options''' can be set here or in the [[hugin Preferences]] for new projects.

[[enfuse]] is the default for '''Image fusion''' ('''Exposure Blending'''), '''Options''' are similar to [[enblend]].

== File formats ==

'''Normal Output''' can be in one several formats:

* '''[[TIFF]]''', various compression options. [[16bit]] and ''8bit'' depth supported. '''None''' compression is supported by most other applications, '''LZW''' compression is common in Windows/Mac applications and '''Deflate''' compression is more common with Linux tools.
* '''[[JPEG|JPG]]''', lossy compression suitable for web/email. '''Quality''' can vary from ''0'' (extremely low quality, small file size) and ''100'' (high quality, large file size). A typical quality setting for web/email would be between ''70'' and ''80''
* '''[[PNG]]''', lossless compression. [[16bit]] and ''8bit'' depth supported.


::''Note that some versions of enblend doesn't support all output formats; as an example some Linux enblend versions will probably fail unless you choose '''TIFF'''.''

'''HDR Output''' can be either:

* ''floating-point'' [[TIFF]], various compression options.
* '''[[OpenEXR|EXR]]''', this is a high dynamic range format which is more compact than a high dynamic range TIFF.

__NOTOC__
[[Category:Software:Hugin]]

User talk:Grin

2009-06-09T09:39:40Z

Grin: unred

Hopefully I get an email when you write here. :-)

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User:Grin

2009-06-09T09:39:18Z

Grin: unred

→ http://wikipedia.hu/wiki/user:grin