Detection of surface orientation and motion from texture by a stereoogical technique.
Artificial Intelligence
A Computational Approach to Edge Detection
IEEE Transactions on Pattern Analysis and Machine Intelligence
Shape from texture: estimation, isotropy and moments
Artificial Intelligence
New method for vanishing point detection
CVGIP: Image Understanding
Three-dimensional computer vision: a geometric viewpoint
Three-dimensional computer vision: a geometric viewpoint
Shape from texture and contour by weak isotropy
Artificial Intelligence
Metric Rectification for Perspective Images of Planes
CVPR '98 Proceedings of the IEEE Computer Society Conference on Computer Vision and Pattern Recognition
The Cascaded Hough Transform as an Aid in Aerial Image Interpretation
ICCV '98 Proceedings of the Sixth International Conference on Computer Vision
Grouping Based on Projective Geometry Constraints and Uncertainty
ICCV '98 Proceedings of the Sixth International Conference on Computer Vision
What can be done with an embedded stereo-rig in urban environments?
Robotics and Autonomous Systems
ICCHP '08 Proceedings of the 11th international conference on Computers Helping People with Special Needs
Obstacle-Free Pathway Detection by Means of Depth Maps
Journal of Intelligent and Robotic Systems
Computer vision-based terrain sensors for blind wheelchair users
ICCHP'06 Proceedings of the 10th international conference on Computers Helping People with Special Needs
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Crosswalks and stair-cases are useful road features for outdoor navigation. In this paper, crosswalks and staircases are detected by looking for groups of concurrent lines, and edges are then partitioned using intensity variation information. To distinguish them, three methods are developed to estimate the pose: a homography search approach using an a priori model, and finding the normal using the vanishing line computed from equally spaced lines and likewise with two vanishing points. These algorithms, with error analysis carried out, have been applied to real images with promising results, and they are also useful in other shape-from-texture applications.