Projections - Revision history

Erik Krause: /* Pannini projection */

2010-06-22T12:16:32Z

‎Pannini projection

Tksharpless: /* Pannini projection */

2010-01-18T23:05:19Z

‎Pannini projection

Tksharpless: /* Pannini projection */

2010-01-18T23:01:33Z

‎Pannini projection

Tksharpless: /* Pannini projection */

2010-01-18T22:59:21Z

‎Pannini projection

Tksharpless: /* Pannini projection */

2010-01-18T22:54:28Z

‎Pannini projection

Tksharpless: /* Equirectangular Pannini projection */

2010-01-18T22:52:18Z

‎Equirectangular Pannini projection

Tksharpless: /* Pannini projection */

2010-01-18T22:51:53Z

‎Pannini projection

Tksharpless: /* Pannini projection */

2010-01-18T22:47:23Z

‎Pannini projection

Tksharpless: /* Equirectangular Pannini projection */

2010-01-18T18:31:04Z

‎Equirectangular Pannini projection

Zarl: /* External links */ panotwins talks added

2009-10-27T07:55:21Z

‎External links: panotwins talks added

@@ Line 95: / Line 95: @@
 The Pannini projection, also known as 'Recti-Perspective', 'Panini' or 'Vedutismo', keeps verticals vertical and radial lines straight.  This can impart a strong sense of correct perspective to wide angle views that have a single central vanishing point.  However this projection renders horizontal straight lines as curves.  So-called "squeezed" variants reduce or eliminate that curvature, at the expense of bending the ends of long radial lines.
-The 'general Panini projection' is an adjustable version that can zoom continuously from rectilinear, through the standard Pannini projection, to the even more compressed orthographic cylindrical projection.  It was introduced in early 2009 in the Panini panorama viewer.  The version implemented in the PanoTools library in early 2010 also offers two generally useful flavors of squeeze.
+[[The General Panini Projection]] is an adjustable version that can zoom continuously from rectilinear, through the standard Pannini projection, to the even more compressed orthographic cylindrical projection.  It was introduced in early 2009 in the Panini panorama viewer.  The version implemented in the PanoTools library in early 2010 also offers two generally useful flavors of squeeze.
 There were two earlier implementations in the PanoTools library, 'panini', which is actually not the Pannini projection but a very similar compressed cylindrical projection, and 'equirectangular panini', which is the standard Pannini, or stereographic cylindrical, projection.

@@ Line 92: / Line 92: @@
 == Pannini projection ==
-[[image:Ben_Equirectangular_panini.jpg|thumb|250px|right|h180° v110°]]
+[[image:Ben_Equirectangular_panini.jpg|thumb|220px|right|h180° v110°]]
 The Pannini projection, also known as 'Recti-Perspective', 'Panini' or 'Vedutismo', keeps verticals vertical and radial lines straight.  This can impart a strong sense of correct perspective to wide angle views that have a single central vanishing point.  However this projection renders horizontal straight lines as curves.  So-called "squeezed" variants reduce or eliminate that curvature, at the expense of bending the ends of long radial lines.

@@ Line 92: / Line 92: @@
 == Pannini projection ==
-[[image:Ben_Equirectangular_panini.jpg|thumb|200px|right|h180° v110°]]
+[[image:Ben_Equirectangular_panini.jpg|thumb|250px|right|h180° v110°]]
 The Pannini projection, also known as 'Recti-Perspective', 'Panini' or 'Vedutismo', keeps verticals vertical and radial lines straight.  This can impart a strong sense of correct perspective to wide angle views that have a single central vanishing point.  However this projection renders horizontal straight lines as curves.  So-called "squeezed" variants reduce or eliminate that curvature, at the expense of bending the ends of long radial lines.

@@ Line 93: / Line 93: @@
 == Pannini projection ==
 [[image:Ben_Equirectangular_panini.jpg|thumb|200px|right|h180° v110°]]
-The Pannini projection, also known as 'equirectangular panini', 'Recti-Perspective', 'Panini' or 'Vedutismo', keeps verticals vertical and radial lines straight.  This can give a strong sense of 'correct perspective' to wide angle views that have a single central vanishing point.  However this projection renders horizontal straight lines as curves.  So-called "squeezed" variants reduce or eliminate this curvature, at the expense of introducing some curvature in long radial lines.
+The Pannini projection, also known as 'Recti-Perspective', 'Panini' or 'Vedutismo', keeps verticals vertical and radial lines straight.  This can impart a strong sense of correct perspective to wide angle views that have a single central vanishing point.  However this projection renders horizontal straight lines as curves.  So-called "squeezed" variants reduce or eliminate that curvature, at the expense of bending the ends of long radial lines.
 The 'general Panini projection' is an adjustable version that can zoom continuously from rectilinear, through the standard Pannini projection, to the even more compressed orthographic cylindrical projection.  It was introduced in early 2009 in the Panini panorama viewer.  The version implemented in the PanoTools library in early 2010 also offers two generally useful flavors of squeeze.

@@ Line 93: / Line 93: @@
 == Pannini projection ==
 [[image:Ben_Equirectangular_panini.jpg|thumb|200px|right|h180° v110°]]
 The Pannini projection, also known as 'equirectangular panini', 'Recti-Perspective', 'Panini' or 'Vedutismo', keeps verticals vertical and radial lines straight.  This can give a strong sense of 'correct perspective' to wide angle views that have a single central vanishing point.  However this projection renders horizontal straight lines as curves.  So-called "squeezed" variants reduce or eliminate this curvature, at the expense of introducing some curvature in long radial lines.
 The 'general Panini projection' is an adjustable version that can zoom continuously from rectilinear, through the standard Pannini projection, to the even more compressed orthographic cylindrical projection.  It was introduced in early 2009 in the Panini panorama viewer.  The version implemented in the PanoTools library in early 2010 also offers two generally useful flavors of squeeze.
-There were two earlier implementations in the PanoTools library, 'panini', which is actually not the Pannini projection but a very similar compressed cylindrical projection (lower image), and 'equirectangular panini', which is really the standard Pannini, or stereographic cylindrical, projection (upper image).
+There were two earlier implementations in the PanoTools library, 'panini', which is actually not the Pannini projection but a very similar compressed cylindrical projection, and 'equirectangular panini', which is the standard Pannini, or stereographic cylindrical, projection.
 {{clr}}
 == Architectural projection ==

@@ Line 102: / Line 102: @@
 {{clr}}
-== Equirectangular Pannini projection ==
-[[image:Ben_Equirectangular_panini.jpg|thumb|200px|right|h180° v110°]]
-This is the name given to the standard [[#Pannini projection|Pannini projection]] in the panotools library.
-Technically it is the stereographic cylindrical projection.
-{{clr}}
 == Architectural projection ==

@@ Line 109: / Line 109: @@
 * Description of panoramic image projections - http://www.cambridgeincolour.com/tutorials/image-projections.htm
+* Two talks from the 2009 [[Panotools Meeting]] by the ''panotwins'' with a comparison of projection types:
 [[Category:Glossary]]