What Can Be Determined from a Full and a Weak Perspective Image?

This paper presents a first investigation on the structure from motion problem from the combination of full and weak perspective images. This problem arises in multiresolution object modeling, where multiple zoomed-in or closeup views are combined with wider or distant reference views. The narrow field-of-view (FOV) images from the zoomed-in or closeup views can be approximated as weak perspective projection. Using a full perspective projection model for the narrow FOV images, although more accurate, actually leads to instabilities during the estimation process due to the non-linearities in the imaging model. The weak perspective approximation leads to more stable estimation algorithms, although at the cost of a small amount of modeling inaccuracy. Previous work in structure from motion focused either on two (or more) perspective images or on a set of weak perspective (more generally, affine) images. The main contribution of this paper is the study of the SFM problem for the much negl...

• Type: Conference
• Year: 1999
• Where: ICCV
• Authors: Zhengyou Zhang, P. Anandan, Heung-Yeung Shum
• Keywords: Computer Vision, ICCV 1999, Perspective Images, Weak Perspective, Weak Perspective Image