Hi-Vision Camera & VTR. 3. Hi-Vision VTR. 3-3. D-6.

Camera Calibration by Vanishing Lines for 3-D Computer Vision

A new approach to camera calibration by vanishing lines is proposed. Calibrated parameters include the orientation, the position, and the focal length of a camera. A hexagon is employed as the calibration target to generate a vanishing line of the ground plane from its projected image. It is shown that the vanishing line includes useful geometric hints about the camera orientation parameters an...

CAGD based 3-D vision

This paDer presents the initial results Of our work in using the Computer Aided Geometric Design (CAGD) representations and models as a basis for the visual recognition of 3-D objects for obotic applications. We describe some techniques and algorithms Which allow the generation of computer representations and geometric models of complicated realizable 3-0 objects in a systematic manner. These r...

Intensity based stereo vision: from 3-D to 3-D

In this paper, we present a new intensity based technique for recovering depth information from two or more images. Our method uses planar patches to approximate 3-D surfaces. In order to recover the depth information, the view-line constraint and the imaging geometry are introduced. The view-line constraint is used to restrict the position of a planar patch. From the constraint we can get the ...

Introductory techniques for 3-D computer vision

Uncalibrated Vision for 3-d Underwater Applications

| This paper presents an uncalibrated vision system recovering 3-D reconstructions of underwater scenes using no camera calibration at all. The only information available is a set of point correspondences plus some a-priori knowledge on the scene structure. The system includes three main components: (1) a robust tracker, which targets optimal features for video tracking, and implements a comple...