The epipolar parametrization arises naturally in the reconstruction of surfaces from prooles with known camera motion. This is a special case of a local paramet-ric representation which is a mesh. Local parametric representations can be combined into a global one by computing the transformation in parameter space on the overlap of the patches. This paper also discusses the applicability of this...

The standard setup in reconstructing the three-dimensional geometry of a scene from a pair of stereo images is to have them rectified, in which case the apparent motion of points is horizontal. With pinhole cameras, it is always possible to find two homographies that rectify the images. The method of Fusiello and Irsara assumes that both cameras are the same with principal point at the center, ...

The 3-D reconstruction of visible polyhedral faces from a pair of general perspective views with the aid of a calibration plate is addressed. A polyhedron is placed on a planar calibration plate and two side views of both the polyhedron and the calibration plate are taken. Through proper arrangements we may assume that in the two views a number of polyhedral edges lying on the calibration plate...

We explore the geometric and algebraic relations that exist between correspondences of points and lines in an arbitrary number of images. We propose to use the formalism of the Grassmann-Cayley algebra as the simplest way to make both geometric and algebraic statements in a very synthetic and eeective way (i.e. allowing actual computation if needed). We have a fairly complete picture of the sit...

This paper analyzes the geometry of the visual motion estimation problem in relation to transformations of the input (images) that stabilize particular output functions such as the motion of a point, a line and a plane in the image. By casting the problem within the popular \epipolar geometry", we provide a common framework for including constraints such as point, line of plane xation by just c...

In this paper, we proposed an automatic procedure to reconstruct building outline using building data and stereo aerial images. Our methods focused on the outline of building, excluding the inner structure of roof surface. This procedure includes five steps, 1) to produce the edge gradient images by Canny Detector, 2) to defined the valid workspace in object space and image space by building da...

This paper presents a method to search for stereo correspondence based on the connectivity of segments. The data structure is defined by boundary representation. The free curve can be treated by this data structure not as a straight line approximation, but as a curved line. Some candidates for correspondence pairs consist of two segments in left and right images under epipolar condition. The co...

Epipolar geometry is the geometry situation of two cameras depicting the same scene. For un-calibrated cameras epipolar geometry is compactly described by the fundamental matrix. Estimation of the fundamental matrix is trivial if we have a set of corresponding points in the two images. Corresponding points are often found using e.g. the Harris interest point detector, but there are several adva...

The goal of developing automated off-line vision metrology systems has largely been accomplished over recent years. The emphasis of research into measurement automation has thus moved on to implementation of more flexible and robust algorithms and processes in order to both improve performance and better accommodate data errors. This paper describes key features of the automatic measurement ope...

This paper presents an auto-recognition method for pointer-type meter based on computer vision. Two calibrated cameras are located in the right and left sides of the meter to capture the meter displayed images. In each displayed image, the fast Hough transform method is used to locate the approximate pointer area and then the least squares fitting method is used to determine the precise line th...