View
240
Download
2
Embed Size (px)
Citation preview
Jana Kosecka, CS 223b2
Rotation Only - Calibrated Rotation Only - Calibrated CaseCase
Calibrated Two views related by rotation only
Mapping to a reference view – rotation can be estimated
Mapping to a cylindrical surface
Jana Kosecka, CS 223b6
Do we have to project on to a Do we have to project on to a plane ?plane ?
Camera Center
Jana Kosecka, CS 223b7
Cylindrical ProjectionCylindrical Projection
Camera Center
360˚ Panorama [Szeliski & Shum 97]
Jana Kosecka, CS 223b8
Map 3D point (X,Y,Z) onto cylinder
Cylindrical projectionCylindrical projection
XY
Z
unit cylinder
unwrapped cylinder
Convert to cylindrical coordinates
cylindrical image
Convert to cylindrical image coordinates
Jana Kosecka, CS 223b10
Inverse Cylindrical projectionInverse Cylindrical projection
X
YZ
(X,Y,Z)
(sin,h,cos)
Jana Kosecka, CS 223b11
Removing SeamsRemoving Seams
Differences in exposure Vignetting Small misalignments
[Brown 2003]