Remapping - Revision history

Klaus: /* Camera image to sphere */ tweak relative image sizes

2008-05-05T12:13:42Z

‎Camera image to sphere: tweak relative image sizes

Klaus: provided some visualisation images

2008-05-05T11:56:57Z

provided some visualisation images

Erik Krause: /* Definition */ linked to stitching

2008-05-04T13:31:56Z

‎Definition: linked to stitching

Erik Krause: New page: == Definition == Remapping is {{Glossary|the process of changing the image geometry in order to fit to the adjacent images that should contribute to a panorama.|1}} Remapping highly...

2008-05-04T13:06:20Z

New page: == Definition == Remapping is {{Glossary|the process of changing the image geometry in order to fit to the adjacent images that should contribute to a panorama.|1}} Remapping highly...

New page

== Definition ==

Remapping is {{Glossary|the process of changing the image geometry in order to fit to the adjacent images that should contribute to a [[panorama]].|1}}

Remapping highly depends on [[aligning]], since any alignment change of an image requires a different remapping.

@@ Line 11: / Line 11: @@
 The camera image has to be transformed into angle space, which here is visualised as projecting the image from a virtual camera, reversing the light path, onto a sphere.
-[[Image:Img08232.jpg|300px]] [[Image:Globe05png.svg|200px]]
+[[Image:Img08232.jpg|300px]] [[Image:Globe05png.svg|230px]]
 === Relative alignment ===

← Older revision		Revision as of 11:56, 5 May 2008
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	It highly depends on [[aligning]], since any alignment change of an image requires a different remapping. Remapping is an inherent part of the [[stitching]] process.		It highly depends on [[aligning]], since any alignment change of an image requires a different remapping. Remapping is an inherent part of the [[stitching]] process.
		+
		+	Although the software remaps in one single step, one can conceptually identify several logical steps.
		+
		+	=== Camera image to sphere ===
		+
		+	The camera image has to be transformed into angle space, which here is visualised as projecting the image from a virtual camera, reversing the light path, onto a sphere.
		+
		+	[[Image:Img08232.jpg\|300px]] [[Image:Globe05png.svg\|200px]]
		+
		+	=== Relative alignment ===
		+
		+	Generally, one is free to choose any orientation of the virtual camera/projector. But for panoramic images, one wants to align these images. The usual software approach is to mark a set of same features in image pairs, and have the distance between such marker pairs minimised in an overall optimisation process.
		+
		+	[[Image:Img0823xcp3.png\|672px]]
		+
		+	=== Screen projection ===
		+
		+	Images in the computer environment are flat, hence one has to remap the spherical geometry. This can be a general mathematical mapping function. Some mappings, as the rectilinear projection below, can be visualised as an optical projection, using a point light source in the centre of the sphere.
		+
		+	[[Image:Globe08png.svg\|240px]][[Image:Img0823xstitch6.jpg\|400px]]

← Older revision		Revision as of 13:31, 4 May 2008
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	Remapping is {{Glossary\|the process of changing the image geometry in order to fit to the adjacent images that should contribute to a [[panorama]].\|1}}		Remapping is {{Glossary\|the process of changing the image geometry in order to fit to the adjacent images that should contribute to a [[panorama]].\|1}}

−	~~Remapping~~ highly depends on [[aligning]], since any alignment change of an image requires a different remapping.	+	It highly depends on [[aligning]], since any alignment change of an image requires a different remapping. Remapping is an inherent part of the [[stitching]] process.