Method and system to perform optical moving object detection and tracking over a wide area
AssigneeVisionmap Ltd.
InventorMichael Pechatnikov
Life of this patent
Estimating the term…
Abstract
A method for moving object detection, comprising generating a time series of multi-exposures of scenes, each multi-exposure of a scene comprising a sequence of at least two at least partially overlapping images of that scene captured in rapid succession, wherein the time series of multi-exposures periodically revisits substantially the same scenes, detecting moving objects within each multi-exposure by comparing its sequence of overlapping images, and tracking objects by comparing moving objects detected within multi-exposures of substantially the same scenes.
Claims13
A method for moving object detection, comprising:
- in an airborne vehicle:
- (a) generating a time series of multi-exposures of scenes, each multi-exposure of a scene comprising a sequence of at least two at least partially overlapping images of that scene captured in rapid succession, wherein the time series of multi-exposures periodically revisits substantially the same scenes;
- (b) detecting moving objects within each multi-exposure by comparing its sequence of overlapping images;
- (c) generating data characterizing the moving objects;
- and
- (d) transmitting only the data characterizing the moving objects to a ground station;
- and
- in said ground station:
- (e) based on the data characterizing the moving objects, tracking the moving objects;
- wherein the data characterizing the moving objects comprises, for each moving object, a capture time, object location coordinates, an object velocity vector, and a thumbnail image of the object.
A moving object detection system, comprising:
- (a) an optical unit comprising at least one camera for capturing images of scenes;
- (b) an airborne electronics unit comprising:
- (i) a controller coupled with said optical unit for controlling fields of view and image capture times of said at least one camera, wherein said controller controls said at least one camera to capture a time series of multi-exposures of scenes, each multi-exposure of a scene comprising a sequence of at least two at least partially overlapping images of that scene captured in rapid succession, wherein the time series of multi-exposures periodically revisits substantially the same scenes;
- and
- (ii) a moving object detector coupled with said optical unit for detecting moving objects within each multi-exposure by comparing its sequence of overlapping images and for generating data characterizing the moving objects;
- (c) an airborne transmitter for transmitting only the data characterizing the moving objects from the airborne vehicle to a ground station via a communication link;
- and
- (d) at the ground station:
- a ground processing unit communicatively coupled with said first electronics unit for tracking the moving objects based on the data characterizing the moving objects;
- wherein the data characterizing the moving objects comprises, for each moving object, a capture time, object location coordinates, an object velocity vector, and a thumbnail image of the object.
Dependencies are inferred from the claim text.