Method and system for detecting a signal structure from a moving video platform
AssigneeGeneral Electric Company
InventorsThomas Baby Sebastian, Peter Henry Tu
Life of this patent
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Abstract
The present invention aims at providing a method for detecting a signal structure from a moving vehicle. The method for detecting signal structure includes capturing an image from a camera mounted on the moving vehicle. The method further includes restricting a search space by predefining candidate regions in the image, extracting a set of features of the image within each candidate region and detecting the signal structure accordingly.
Claims23
A method for detecting a signal structure from a moving vehicle comprising:
- capturing an image from a camera mounted on the moving vehicle;
- restricting a search space by predefining candidate regions in the image based on locations of signal structures along railway tracks stored in a memory;
- extracting a set of features of the image within each candidate region;
- and
- detecting the signal structure;
- wherein restricting the search space by predefining candidate regions in the image comprises mapping a set of measurement in world coordinates to a set of measurement in image coordinates based on a projection matrix.
A method for detecting a signal structure from a moving vehicle comprising:
- capturing a video from a camera mounted on the moving vehicle;
- extracting an image from the video;
- restricting a search space by predefining candidate regions in the image based on locations of signal structures along railway tracks stored in a memory;
- extracting a set of features of the image within each candidate region;
- detecting the signal structure;
- and
- tracking the detection of the signal structure to eliminate a false detection;
- wherein restricting the search space by predefining candidate regions in the image comprises mapping a set of measurement in world coordinates to a set of measurement in image coordinates based on a projection matrix.
A system for signal structure detection comprising:
- a camera configured to capture video or images from a moving vehicle;
- a descriptor configured to extract a set of features from at least one predefined candidate region in the image;
- and
- a classifier configured to classify the set of features as a signal structure image or a non-signal structure image;
- wherein the descriptor is further configured to map a set of measurement in world coordinates to a set of measurement in image coordinates based on a projection matrix.
A non-transitory computer-readable storage medium comprising computer-readable instructions of a computer program that, when executed by a processor, cause the processor to perform a method for detecting a signal structure in an image comprising:
- restricting a search space in the image by predefining candidate regions in the image based on locations of signal structures along railway tracks stored in a memory;
- extracting a set of features of the image within the candidate region;
- and
- detecting a signal structure;
- wherein restricting the search space by predefining candidate regions in the image comprises mapping a set of measurement in world coordinates to a set of measurement in image coordinates based on a projection matrix.
Dependencies are inferred from the claim text.