CROSS SPECTRAL FEATURE CORRELATION FOR NAVIGATIONAL ADJUSTMENT

摘要

PROBLEM TO BE SOLVED: To reduce the navigation drift in a navigation system.SOLUTION: A system includes a sensor to generate a first image having a first two-dimensional image pixel data set. A database provides a second image having a second two-dimensional image pixel data set that includes a three-dimensional positional data set describing a navigational position of each pixel in the second two-dimensional image pixel data set. A vision module includes an edge extractor to extract image edge features from the first two-dimensional pixel data set and image edge features from the second two-dimensional image pixel data set. The vision module includes a feature correlator to determine a navigational position for each pixel in the first two-dimensional image pixel data set on the basis of an image edge feature comparison of the extracted edge features from the first and second two-dimensional image pixel data sets.SELECTED DRAWING: Figure 1