ABSTRACT
We present a new screen space widget, the IBar, for effective camera control in 3D graphics environments. The IBar provides a compelling interface for controlling scene perspective based on the artistic concept of vanishing points. Various handles on the widget manipulate multiple camera parameters simultaneously to create a single perceived projection change. For example, changing just the perspective distortion is accomplished by simultaneously decreasing the camera's distance to the scene while increasing focal length. We demonstrate that the IBar is easier to learn for novice users and improves their understanding of camera perspective.
- Jim Blinn. Where am i? what am i looking at? In IEEE Computer Graphics and Applications, volume 22, pages 179--188, 1988.Google Scholar
- Rex Vicat Cole. Perspective for Artists. Dover Publications, 1976.Google ScholarCross Ref
- Steven M. Drucker and David Zeltzer. Camdroid: A system for implementing intelligent camera control. In 1995 Symp. on Interactive 3D Graphics, pages 139--144. April 1995. Google ScholarDigital Library
- Michael Gleicher and Andrew Witkin. Through-the-lens camera control. Siggraph, 26(2):331--340, July 1992. ISBN 0-201-51585-7. Held in Chicago, Illinois. Google ScholarDigital Library
- Cindy Grimm, Karan Singh, and Nisha Sudarsanan. The ibar: A perspective-based camera widget. Technical Report WUCSE-2004-32, Wash. univ. in St. Louis, 2004.Google Scholar
- Jeff Hultquist. A virtual trackball. In Graphics Gems, pages 462--463. 1990. Google ScholarDigital Library
- J. C. Michener and I. B. Carlbom. Natural and efficient viewing parameters. Computer Graphics (Proceedings of SIGGRAPH 80), 14(3):238--245, July 1980. Google ScholarDigital Library
- Charles O'Connor Jr., Thomas Kier, and David Burghy. Perspective Drawing and Application. Prentice Hall, 1998.Google Scholar
Index Terms
- The IBar: a perspective-based camera widget
Recommendations
CubeCam: a screen-space camera manipulation tool
Computational Aesthetics'09: Proceedings of the Fifth Eurographics conference on Computational Aesthetics in Graphics, Visualization and ImagingWe present CubeCam, an image-space camera manipulation widget that uses a projected cube to both visualize the relationship of the camera to the scene and as an interaction tool to change that camera. The cube geometry reflects the use of perspective ...
Equidistant (fθ) fish-eye perspective with application in distortion centre estimation
Radial distortion in an image is a geometric distortion that causes a non-linear variation in resolution across the image, with a higher spatial resolution in the central areas of the image, and lower resolution in the peripheral areas of the image. ...
Surveillance camera scheduling: a virtual vision approach
VSSN '05: Proceedings of the third ACM international workshop on Video surveillance & sensor networksWe present a surveillance system, comprising wide field-of-view (FOV) passive cameras and pan/tilt/zoom (PTZ) active cameras, which automatically captures and labels high-resolution videos of pedestrians as they move through a designated area. A wide-...
Comments