Artificial Intelligence
An analysis on quantizing the Hough space
Pattern Recognition Letters
IEEE Transactions on Pattern Analysis and Machine Intelligence
ICPR '98 Proceedings of the 14th International Conference on Pattern Recognition-Volume 1 - Volume 1
A review of log-polar imaging for visual perception in robotics
Robotics and Autonomous Systems
Active stereo tracking of N ≤ 3 targets using line scan cameras
IEEE Transactions on Robotics
A Novel Space Variant Image Representation
Journal of Mathematical Imaging and Vision
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This paper applies a sensor which has been developed based on a model of primate vision to corner fixation. Fixation is critical for the log-polar sensor as many of the sensor's advantages are demonstrated only under fixation. This paper presents a fast corner fixation algorithm using the log-Hough transform to find the dominant centremost corner and align the optical axis with the corner. The algorithm has been implemented in a real-time closed-loop control system on a pan-tilt platform. This paper demonstrates an important benefit of the log-polar sensor with vote-based algorithms, an emphasis of foveal pixels. This removes the need for searching explicitly through all detected corner positions in order to locate the most central. In addition, since the sensor has a large field of view for a given number of pixels compared to space-invariant cameras, it shows increased computational performance, while still supporting accurate fixation.