Stitching Streetview - Revision history

Janmartin: /* Unavoidable parallax error */ typo

2010-10-22T00:56:42Z

‎Unavoidable parallax error: typo

Janmartin: /* How to determine the lens parameters for a streetview rig? */ Explained how to take the images for abc and v.

2010-10-19T20:08:56Z

‎How to determine the lens parameters for a streetview rig?: Explained how to take the images for abc and v.

Janmartin: /* What does a streetview rig look like? */ splitt one paragraph into two

2010-10-19T15:43:03Z

‎What does a streetview rig look like?: splitt one paragraph into two

Zarl: /* Whats the difference to a panorama rig? */ typo

2010-10-19T11:09:12Z

‎Whats the difference to a panorama rig?: typo

Janmartin: /* What does a streetview rig look like? */

2010-10-18T22:13:37Z

‎What does a streetview rig look like?

Janmartin: /* What does a streetview rig look like? */

2010-10-18T22:12:52Z

‎What does a streetview rig look like?

Janmartin: Start

2010-10-18T21:14:47Z

Start

New page

Now that streetview rigs become affordable for amateur usage it is time to cover the stitching process. 
This page is thought as a starting point. Please add your findings.

=Whats the difference to a panorama rig?=
Streetview rigs
* have more that one camera.
* take all images at once, not one image after another.
* always have a parallax error.
* streetview rigs are most likely for automated mass-production of panoramas.

=What does a streetview rig look like?=
Amateur streetview rigs by Jan Martin: 
First model from a 360 degree security camera: 
http://www.diy-streetview.org/forum/viewtopic.php?f=2&t=11 
Second model from 2x Canan A570 IS cameras and 2x Nikon FC-E8 fisheye conversion lens: 
http://www.diy-streetview.org/2010/07/28/new-streetview-rig/ 
The 4x GoPro HD backpack streetview rig by Matt McClelland: 
http://www.diy-streetview.org/2010/10/18/gopro-hd-digital-cameras-for-streetviews 

=Unavoidable parallax error=
In theory the best result one can expect from a multi-camera rig (aka streetview rig) is a stitching error that is the size of the largest distance of the lenses of the rig. So if the streetview rig has two lenses whose NPP ('''n'''o '''p'''arallax (error) '''p'''oints)are 7 cm away, 7cm also is the smallest stitching error on can hope for. Therefore it is desirable to place the lenses as close as possible together. To reduce stitching errors it also is desirable to have the light falling through all the lenses meet in one (virtual) point in the middle of the rig. And have all the lenses in the same distance from this point.

=How to determine the lens parameters for a streetview rig?=
See http://www.diy-streetview.org/how-to-lens-parameters

Depending on the number of cameras your streetview rig has, you need to turn it differently. 
What's needed is a 50% overlap.

=How to make a hugin template for stitching streetviews?=
See http://www.diy-streetview.org/2010/02/27/streetviews-by-hugin

=How to do mass-stitching?=
See http://www.diy-streetview.org/how-to-stitch-all-files-in-a-folder

----
Copyright notice by Jan Martin: 
I hereby grant the right to use texts from my website http://www.diy-streetview.org in this wiki.

@@ Line 21: / Line 21: @@
 =Unavoidable parallax error=
-In theory the best result one can expect from a multi-camera rig (aka streetview rig) is a stitching error that is the size of the largest distance of the lenses of the rig. So if the streetview rig has two lenses whose NPP ('''n'''o '''p'''arallax (error) '''p'''oints)are 7 cm away, 7cm also is the smallest stitching error on can hope for. Therefore it is desirable to place the lenses as close as possible together. To reduce stitching errors it also is desirable to have the light falling through all the lenses meet in one (virtual) point in the middle of the rig. And have all the lenses in the same distance from this point.
+In theory the best result one can expect from a multi-camera rig (aka streetview rig) is a stitching error that is the size of the largest distance of the lenses of the rig. So if the streetview rig has two lenses whose NPP ('''n'''o '''p'''arallax (error) '''p'''oints) are 7 cm away, 7cm also is the smallest stitching error on can hope for. Therefore it is desirable to place the lenses as close as possible together. To reduce stitching errors it also is desirable to have the light falling through all the lenses meet in one (virtual) point in the middle of the rig. And have all the lenses in the same distance from this point.
 =How to determine the lens parameters for a hugin template for a streetview rig?=

@@ Line 10: / Line 10: @@
 =What does a streetview rig look like?=
-Amateur streetview rigs by Jan Martin:<br>
+Amateur streetview rigs:<br><br>
 First model from a 360 degree security camera:<br>
 http://www.diy-streetview.org/forum/viewtopic.php?f=2&t=11<br>
 Second model from 2x Canon A570 IS cameras and 2x Nikon FC-E8 fisheye conversion lens:<br>
-http://www.diy-streetview.org/2010/07/28/new-streetview-rig/<br>
+http://www.diy-streetview.org/2010/07/28/new-streetview-rig/<br><br>
-The 4x GoPro HD backpack streetview rig by Matt McClelland:<br>
+By Matt McClelland:<br>
 http://www.diy-streetview.org/2010/10/19/gopro-hd-digital-cameras-for-streetviews/<br>

@@ Line 13: / Line 13: @@
 First model from a 360 degree security camera:<br>
 http://www.diy-streetview.org/forum/viewtopic.php?f=2&t=11<br>
-Second model from 2x Canan A570 IS cameras and 2x Nikon FC-E8 fisheye conversion lens:<br>
+Second model from 2x Canon A570 IS cameras and 2x Nikon FC-E8 fisheye conversion lens:<br>
 http://www.diy-streetview.org/2010/07/28/new-streetview-rig/<br>
 The 4x GoPro HD backpack streetview rig by Matt McClelland:<br>

@@ Line 16: / Line 16: @@
 http://www.diy-streetview.org/2010/07/28/new-streetview-rig/<br>
 The 4x GoPro HD backpack streetview rig by Matt McClelland:<br>
-http://www.diy-streetview.org/2010/10/18/gopro-hd-digital-cameras-for-streetviews<br>
+http://www.diy-streetview.org/2010/10/19/gopro-hd-digital-cameras-for-streetviews/<br>
 =Unavoidable parallax error=

@@ Line 23: / Line 23: @@
 In theory the best result one can expect from a multi-camera rig (aka streetview rig) is a stitching error that is the size of the largest distance of the lenses of the rig. So if the streetview rig has two lenses whose NPP ('''n'''o '''p'''arallax (error) '''p'''oints)are 7 cm away, 7cm also is the smallest stitching error on can hope for. Therefore it is desirable to place the lenses as close as possible together. To reduce stitching errors it also is desirable to have the light falling through all the lenses meet in one (virtual) point in the middle of the rig. And have all the lenses in the same distance from this point.
-=How to determine the lens parameters for a streetview rig?=
+=How to determine the lens parameters for a hugin template for a streetview rig?=
-See http://www.diy-streetview.org/how-to-lens-parameters
-Depending on the number of cameras your streetview rig has, you need to turn it differently.<br>
+To create a template.pto file for a streetview camera one needs to provide the lens parameters a, b, c and v for each lens to the template.
 What's needed is a 50% overlap.
 =How to make a hugin template for stitching streetviews?=

@@ Line 4: / Line 4: @@
 =Whats the difference to a panorama rig?=
 Streetview rigs
-* have more that one camera.
+* have more than one camera.
 * take all images at once, not one image after another.
 * always have a parallax error.
-* streetview rigs are most likely for automated mass-production of panoramas.
+* are most likely for automated mass-production of panoramas.
 =What does a streetview rig look like?=