Determining the absolute orientation in a corridor using projective geometry and active vision

Determining the absolute orientation in a corridor using projective geometry and active vision

The capability of a mobile robot to determine its position in the environment (self-localization) is a prerequisite for achieving autonomous navigation. An approach is proposed for determining the absolute orientation of an autonomous robot in a system of corridors, based on the projective geometry and active computer vision. In the proposed approach, the common direction of longitudinal corrid...

Two Results in Computer Vision using Projective Geometry

In the first part of this thesis the problem of metric reconstruction and texture acquisition from a single uncalibrated view of a surface of revolution (SOR) is addressed. Geometric constraints induced in the image by the symmetry properties of the SOR structure are exploited to perform self-calibration of a natural camera, 3D metric reconstruction, texture acquisition & mosaicing and automati...

Oriented Projective Geometry for Computer Vision

We present an extension of the usual projective geometric framework for computer vision which can nicely take into account an information that was previously not used, i.e. the fact that the pixels in an image correspond to points which lie in front of the camera. This framework, called the oriented projective geometry, retains all the advantages of the unoriented projective geometry, namely it...

Coordinate-Free Projective Geometry for Computer Vision

willingness to communicate in the iranian context: language learning orientation and social support

why some learners are willing to communicate in english, concurrently others are not, has been an intensive investigation in l2 education. willingness to communicate (wtc) proposed as initiating to communicate while given a choice has recently played a crucial role in l2 learning. it was hypothesized that wtc would be associated with language learning orientations (llos) as well as social suppo...