Artículos

Qualitative Interpretation of Camera Motion in the Projection of Individual Frames of an Image Stream

Interpretación Cualitativa del Movimiento de la Cámara mediante el Análisis de Projecciones de los Cuadros de una Secuencia de Imágenes

Joaquín Salas

CICATA–IPN
Jose Siurob 10, Col Alameda
Queretaro, Qro. CP 76040

E–mail: salas@ieee.org

Article received on March 19, 2002; accepted on March 03, 2003

Abstract

In this study, we are interested on some special kind of camera movements that ideally take place on a flat surface and the image projections perpendicular to these movements. We analyze interpretation of motion for a camera heading forward, panning around its optical center and translating perpendicular to its optical axis. We present simulations and experiments with real data. Our results show that it is possible to obtain qualitative information about the camera motion's nature.

Keywords: Camera Motion, Qualitative Interpretation, Image Sequence, Flatland

Resumen

En este documento, estudiamos una clase especial de movimientos de la cámara que idealmente se desarrollan en una superficie plana y las proyecciones de imagen perpendiculares a esos movimientos. De esta forma, analizamos la interpretación de movimientos de una cámara cuando ésta avanza en dirección de su eje focal, gira alrededor de su centro óptico y se traslada perpendicular a su eje focal. Mostramos simulaciones y experimentos con datos reales. Nuestros resultados muestran que la aproximación permite obtener información cualitativa sobre la naturaleza del movimiento de la cámara.

Palabras Clave: Movimiento de la Cámara, Interpretación Cualitativa, Secuencias de Imágenes, Mundo Plano

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Acknowledges

The author wants to thank to Prof. Carlo Tomasi for all his ideas, help and support and to the reviewers for their comments and suggestions. This work was partially supported with a grant from CEGEPI–IPN.

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