Hugin Optimizer tab - Revision history

Zarl: now with TOC (NOTOC deleted)

2013-03-05T15:34:13Z

now with TOC (__NOTOC__ deleted)

Harryvanderwolf at 14:48, 30 January 2013

2013-01-30T14:48:01Z

Thomas at 09:44, 27 January 2013

2013-01-27T09:44:21Z

Zarl: rephrased

2012-04-19T06:16:34Z

rephrased

Bruno: /* Quick Optimizer */ menu has been rearranged

2011-03-13T00:29:28Z

‎Quick Optimizer: menu has been rearranged

Bruno: /* Everything */ not a preset option anymore

2011-03-13T00:20:57Z

‎Everything: not a preset option anymore

James Legg: Describe Translation parameters and optimise presets

2010-07-21T20:12:10Z

Describe Translation parameters and optimise presets

Bruno: Reverted edits by Vatoz (Talk) to last version by Bruno

2009-10-14T23:04:39Z

Reverted edits by Vatoz (Talk) to last version by Bruno

Vatoz: Removed section "edit script before optimizing" - this checkbox was in hugin versions older than 0.7

2009-10-13T23:07:25Z

Removed section "edit script before optimizing" - this checkbox was in hugin versions older than 0.7

Bruno: rearranged

2008-04-12T16:14:30Z

rearranged

@@ Line 110: / Line 110: @@
 * Optimising the '''g''' or '''t''' shear parameters of the [[lens correction model]] for scanned images is only possible by editing the script file.
-__NOTOC__
 [[Category:Software:Hugin]]

← Older revision		Revision as of 14:48, 30 January 2013
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		+	{\| style="margin: 1em auto 1em 1em;background:#FFFF99;color:#FF0000;text-align:left;border: solid #FF3300;"
		+	\|-valign="top"
		+	! '''2013-01-01:'''
		+	! These are the wiki pages belonging to hugin versions up to and including 2012.0.0
		+	\|}
		+
	[[hugin]] uses a photo alignment scheme where it adjusts image orientation and lens settings of source photos		[[hugin]] uses a photo alignment scheme where it adjusts image orientation and lens settings of source photos
	until the [[control points]] line-up. This process is called ''optimisation'' and the '''hugin Optimizer tab''' is where it is controlled in detail. You actually ''create'' individual '''control points''' in the [[hugin Control Points tab\|Control Points tab]], and ''manage'' them in the [[hugin Photos tab\|Photos tab]] and [[hugin Control Points table\|Control Points table]].		until the [[control points]] line-up. This process is called ''optimisation'' and the '''hugin Optimizer tab''' is where it is controlled in detail. You actually ''create'' individual '''control points''' in the [[hugin Control Points tab\|Control Points tab]], and ''manage'' them in the [[hugin Photos tab\|Photos tab]] and [[hugin Control Points table\|Control Points table]].

@@ Line 1: / Line 1: @@
 [[hugin]] uses a photo alignment scheme where it adjusts image orientation and lens settings of source photos
-until the [[control points]] line-up. This process is called ''optimisation'' and the '''hugin Optimizer tab''' is where it is controlled in detail.  You actually ''create'' individual '''control points''' in the [[hugin Control Points tab]], and ''manage'' them in the [[hugin Images tab]] and [[hugin Control Points table]].
+until the [[control points]] line-up. This process is called ''optimisation'' and the '''hugin Optimizer tab''' is where it is controlled in detail.  You actually ''create'' individual '''control points''' in the [[hugin Control Points tab|Control Points tab]], and ''manage'' them in the [[hugin Photos tab|Photos tab]] and [[hugin Control Points table|Control Points table]].
 So to align two or more photos we need to connect them with some control points. A general rule is that optimising more parameters requires more control points.
@@ Line 12: / Line 12: @@
 The '''Optimisation result''' tells you how good the alignment is, large control point error distances indicate one of several things:
-* Some '''control points''' are in the wrong place, look at the list in the [[hugin Control Points table]] and identify points with large distances and check they are set properly.
+* Some '''control points''' are in the wrong place, look at the list in the [[hugin Control Points table|Control Points table]] and identify points with large distances and check they are set properly.
-* If points are set correctly, there may be [[parallax]] errors caused by camera movement between shots.  If so it may be necessary to decide which objects in the scene are important to have aligned and delete unrelated control points in the [[hugin Control Points tab]].
+* If points are set correctly, there may be [[parallax]] errors caused by camera movement between shots.  If so it may be necessary to decide which objects in the scene are important to have aligned and delete unrelated control points in the [[hugin Control Points tab|Control Points tab]].
 * Otherwise you may not be optimising enough parameters.  For example, the [[EXIF]] data retrieved from a [[JPEG]] file may not give a very accurate starting [[Field of View]], in this case you should optimise '''view (v)'''.
 '''Use only control points between images selected in preview window.''' allows you to work on just a few
 of the images in the current project rather than all of them.  Use the buttons along the top of the
-[[Hugin Preview window]] to enable and disable source photos.  When optimising with the
+[[Hugin FastPreview window|Fast Preview window]] to enable and disable source photos.  When optimising with the
-[[Hugin Optimizer tab]], all the hidden images will be ignored.
+[[Hugin Optimizer tab|Optimizer tab]], all the hidden images will be ignored.
 The following pre-set optimisation schemes are provided:
@@ Line 29: / Line 29: @@
 * The lens has minimal [[barrel distortion]] and the photo [[EXIF]] information supplies an accurate [[Field of View]].
 or
-* [[Lens calibration]] has already been performed, saved to a file and loaded into the current project via the [[hugin Camera and Lens tab]].
+* [[Lens calibration]] has already been performed, saved to a file and loaded into the current project via the [[Hugin Photos tab|Photos tab]].
 Note that to align any pair of photos, there should be at least two pairs of [[control points]] connecting them.

@@ Line 1: / Line 1: @@
 [[hugin]] uses a photo alignment scheme where it adjusts image orientation and lens settings of source photos
-until the [[control points]] line-up, this process is called ''optimisation'' and the '''hugin Optimizer tab''' is where it is controlled.  You actually ''create'' individual '''control points''' in the [[hugin Control Points tab]], and ''manage'' them in the [[hugin Images tab]] and [[hugin Control Points table]].
+until the [[control points]] line-up. This process is called ''optimisation'' and the '''hugin Optimizer tab''' is where it is controlled in detail.  You actually ''create'' individual '''control points''' in the [[hugin Control Points tab]], and ''manage'' them in the [[hugin Images tab]] and [[hugin Control Points table]].
-So to align photos you need some control points, a general rule is that optimising more parameters requires more control points.
+So to align two or more photos we need to connect them with some control points. A general rule is that optimising more parameters requires more control points.
 == Quick Optimizer ==

@@ Line 36: / Line 36: @@
 This is exactly the same as the ''incremental'' setting above except that the parameters are optimised at once, this may confuse the optimiser if the images are not already roughly in the right place.  Don't use this setting.
 === Positions and View (y,p,r,v) ===
@@ Line 46: / Line 42: @@
 Note that for this too work you need at least three well-spaced pairs of [[control points]] between any pair of photos.  With a  360 degree panorama it is usually beneficial to optimise the '''Field of View''', even if you have already calibrated this beforehand.
 === Positions and Barrel Distortion (y,p,r,b) ===
@@ Line 60: / Line 52: @@
 As the name suggests this optimises positions, [[Field of View]] and [[barrel distortion]] all at once.
 === Everything without translation ===
@@ Line 71: / Line 59: @@
 You will need many control points, the more the better, and preferably a full spherical panorama (360 by 180 degrees) to get the best correction. You should also use a calibrated [[Heads|panoramic head]]. If the control points are bad (either there are not enough or some are in the wrong place), or your images were not taken around the [[no-parallax point]], this could produce bizarre results.
-However, if you do this well, you will accurately perform [[lens calibration]]. You can save and reuse this lens information on the [[Camera and Lens tab]].
+However, if you do this well, you will accurately perform [[lens calibration]]. You can save and reuse this lens information on the [[Hugin Camera and Lens tab]].
 === The Custom parameters below ===

← Older revision		Revision as of 00:20, 13 March 2011
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	However, if you do this well, you will accurately perform [[lens calibration]]. You can save and reuse this lens information on the [[Camera and Lens tab]].		However, if you do this well, you will accurately perform [[lens calibration]]. You can save and reuse this lens information on the [[Camera and Lens tab]].

−	~~=== Everything ===~~

−	~~Selecting '''Everything''' really optimises everything, including the translation parameters. You will need a huge number of control points to do this successfully.~~

	=== The Custom parameters below ===		=== The Custom parameters below ===

@@ Line 6: / Line 6: @@
 == Quick Optimizer ==
-Use the '''Optimize''' combo box to pick one of several pre-set optimisation schemes, then click the '''Optimize now!''' button to calculate the best available fit.  One valid technique is to try each optimisation scheme in turn, starting at the top, until you are satisfied with the results.
+Use the '''Optimize''' combo box to pick one of several pre-set optimisation schemes, then click the '''Optimize now!''' button to calculate the best available fit.  For a spherical panorama, which is where each image is taken from the same position, you should not optimise translation. For a [[linear panorama]], where you take pictures from different locations of the same flat surface, you must optimise translation.
 The '''Optimisation result''' tells you how good the alignment is, large control point error distances indicate one of several things:
@@ Line 33: / Line 35: @@
 === Positions (y,p,r) ===
-This is exactly the same as the ''incremental'' setting above except that all parameters are optimised at once, this may confuse the optimiser if the images are not already roughly in the right place.  Don't use this setting.
+This is exactly the same as the ''incremental'' setting above except that the parameters are optimised at once, this may confuse the optimiser if the images are not already roughly in the right place.  Don't use this setting.
 === Positions and View (y,p,r,v) ===
@@ Line 40: / Line 46: @@
 Note that for this too work you need at least three well-spaced pairs of [[control points]] between any pair of photos.  With a  360 degree panorama it is usually beneficial to optimise the '''Field of View''', even if you have already calibrated this beforehand.
 === Positions and Barrel Distortion (y,p,r,b) ===
-This is the same as optimising '''Positions''' except that an attempt is made to discover the lens [[barrel distortion]] at the same time. Only the '''b''' parameter of the full [[lens correction model]] is varied by this optimisation scheme, as this is a reasonable approximation of the distortion of a typical lens.
+This is the same as optimising '''Positions''' except that an attempt is made to discover the lens [[barrel distortion]] at the same time. Only the '''b''' parameter of the full [[lens correction model]] is varied by this optimisation scheme, as this is a reasonable approximation of the distortion of a typical lens. You should trust the field of view if you use this.
 Again you need at least three well-placed pairs of [[control points]] between any pair of photos.
@@ Line 50: / Line 60: @@
 As the name suggests this optimises positions, [[Field of View]] and [[barrel distortion]] all at once.
 === Everything ===
-Selecting '''Everything''' optimises every parameter in the full [[lens correction model]], this will produce bizarre results unless you are using a calibrated [[Heads|panoramic head]] and lots of [[control points]] (the more points the better) - This is one way to perform [[lens calibration]].
+Selecting '''Everything''' really optimises everything, including the translation parameters. You will need a huge number of control points to do this successfully.
 === The Custom parameters below ===
@@ Line 60: / Line 82: @@
 For example, when shooting hand-held panoramas, some of the position variation between shots can be resolved by using different '''d''' and '''e''' '''Image Center Shift''' parameters for each shot.  Select '''The Custom parameters below''' and pick the '''d''' and '''e''' parameters for optimisation.  Note that by default, lens settings are shared for all photos in the project, go to the [[hugin Camera and Lens tab]] and ''uncheck'' the '''link''' box for any you want to have different values in each photo.
 ==== Image Orientation ====
-The '''Image Orientation''' section shows the photo number and [[roll]], [[pitch]] and [[yaw]] rotation/orientation values for all input photos (in parenthesis), the ''check'' mark indicates parameters that will be optimised.
+The '''Image Orientation''' section shows the photo number and [[roll]], [[pitch]] and [[yaw]] rotation/orientation values for all input photos (in parenthesis), and the X, Y, and Z translation parameters. The ''check'' mark indicates parameters that will be optimised. The translation parameters should all be 0 on a spherical panorama.
 ==== Lens Parameters ====