Leveling a Finished Panorama - Revision history

Erik Krause: 1 revision(s)

2007-03-21T18:09:03Z

1 revision(s)

Rjlittlefield: fix typo introduced by moving wiki

2007-03-21T18:07:00Z

fix typo introduced by moving wiki

WikiSysop: 11 revision(s)

2006-07-13T20:28:02Z

11 revision(s)

WikiSysop: 1 revision(s)

2006-07-13T19:56:40Z

1 revision(s)

Rjlittlefield: fix typo introduced by moving wiki

2006-06-24T14:45:33Z

fix typo introduced by moving wiki

Rjlittlefield: fix typo introduced by moving wiki

2006-06-24T14:45:33Z

fix typo introduced by moving wiki

New page

Sometimes you'll do a lot of manual touchup on a panorama that you think is finished, and then realize that it's not level. Oops!

Fortunately, it is easy to level the panorama even after doing manual touchup.
Though the following instructions are good for leveling a panorama ''before'' stitching too.

Proceed as follows using PTGui. (A similar sequence should work with other [[GUI front-ends]])

* Create a new project consisting of just one image: your unlevel but otherwise finished panorama.
* Set lens parameters to be equirectangular, hfov=360, a/b/c=0. (hfov=360 might not be possible if you use a version of the [[pano12]] library that is restricted to below 160 degrees - see Tools->Options->Panorama Tools->'Features...' MaxFFOV parameter)

(Alternatively, you can load an existing project consisting of many photos, the principle is the same)

* Set output pano to be equirectangular, hfov=360, vfov=180, "Set optimum size".
* Level the horizon using one of these approaches:
** Define several sets of [[vertical control points]], then optimize pitch and roll. Or...
** Define several sets of [[horizontal control points]] on the actual horizon, then optimize pitch and roll. Or...
** Graphically level the pano using the Panorama Editor window in mode Edit Entire Panorama, using right-mouse drag to rotate until the horizon's high or low spot is centered, then left-mouse drag that spot up and down until the wave flattens out. Be sure to wait long enough for the window to repaint between changes. (PTGui only) Or...
** Use 'Numerical Transform' from the Edit menu in Panorama Editor to apply roll or pitch incrementally until the panorama is level. (PTGui only) Or...
** Use the 'Set Center Point' button in Panorama Editor to set center point to the highest or lowest point of the horizon curve - repeat if necessary. (PTGui only)
* Push button Create Panorama!

Here are some pictures illustrating this process (using an artificially un-leveled pano ;-)

The original off-level pano and lens settings:

[[Image:LevelingTutorialOffLevelPreview.jpg]]

[[Image:LevelingTutorialLensSettings.jpg]]

Vertical control points and optimizer settings:

[[Image:LevelingTutorialControlPoints.jpg]]

[[Image:LevelingTutorialOptimizerPanel.jpg]]

The leveled pano:

[[Image:LevelingTutorialLeveledPreview.jpg]]

[[Category:Tutorial]][[Category:Tutorial:Nice to know]]

Bruno: made more general purpose

2006-03-10T10:38:27Z

made more general purpose

Bruno: linkify

2006-02-24T17:36:00Z

linkify

Erik Krause: categorized

2005-11-12T16:34:11Z

categorized

Bruno: link to GUI front-ends page instead

2005-07-08T11:37:42Z

link to GUI front-ends page instead

← Older revision		Revision as of 18:07, 21 March 2007
Line 39:		Line 39:
	[[Image:LevelingTutorialLeveledPreview.jpg]]		[[Image:LevelingTutorialLeveledPreview.jpg]]

−	~~[[Category:Tutorial]]~~[[Category:Tutorial:Nice to know]]	+	[[Category:Tutorial:Nice to know]]

@@ Line 7: / Line 7: @@
 * Create a new project consisting of just one image: your unlevel but otherwise finished panorama.
-* Set lens parameters to be equirectangular, hfov=360, a/b/c=0. <small>(hfov=360 might not be possible if you use a version of the [[pano12]] library that is restricted to below 160� - see Tools->Options->Panorama Tools->'Features...' MaxFFOV parameter)</small>
+* Set lens parameters to be equirectangular, hfov=360, a/b/c=0. <small>(hfov=360 might not be possible if you use a version of the [[pano12]] library that is restricted to below 160 degrees - see Tools->Options->Panorama Tools->'Features...' MaxFFOV parameter)</small>
 (Alternatively, you can load an existing project consisting of many photos, the principle is the same)

@@ Line 9: / Line 9: @@
 * Set output pano to be equirectangular, hfov=360, vfov=180, "Set optimum size".
 * Level the horizon using one of these approaches:
-** Define several sets of vertical control points, then optimize pitch and roll.  Or...
+** Define several sets of [[vertical control points]], then optimize pitch and roll.  Or...
-** Define several sets of horizontal control points on the actual horizon, then optimize pitch and roll.  Or...
+** Define several sets of [[horizontal control points]] on the actual horizon, then optimize pitch and roll.  Or...
 ** Graphically level the pano using the Panorama Editor window in mode Edit Entire Panorama, using right-mouse drag to rotate until the horizon's high or low spot is centered, then left-mouse drag that spot up and down until the wave flattens out.  Be sure to wait long enough for the window to repaint between changes. <small>(PTGui only)</small>  Or...
 ** Use 'Numerical Transform' from the Edit menu in Panorama Editor to apply roll or pitch incrementally until the panorama is level. <small>(PTGui only)</small>  Or...

← Older revision		Revision as of 16:34, 12 November 2005
Line 34:		Line 34:

	[[Image:LevelingTutorialLeveledPreview.jpg]]		[[Image:LevelingTutorialLeveledPreview.jpg]]
		+
		+	[[Category:Tutorial]][[Category:Tutorial:Nice to know]]

← Older revision	Revision as of 20:28, 13 July 2006
(One intermediate revision by one user not shown)

@@ Line 3: / Line 3: @@
 Fortunately, it is easy to level the panorama even after doing manual touchup.
-Proceed as follows using PTGui.  (A similar sequence should work with PTAssembler.)
+Proceed as follows using PTGui.  (A similar sequence should work with other [[GUI front-ends]])
 * Create a new project consisting of just one image: your unlevel but otherwise finished panorama.