SYSTEMS AND METHODS FOR DETECTING THE MOVEMENT OF AN OBJECT
First Claim
1. A system for detecting a movement of an object marked with a marker, comprising:
- a sensor configured to capture a first image of the marker and to capture a second image of the marker after the first image, each of the first and second images comprising pixels each having a visual intensity; and
a controller coupled to the sensor and configured to;
compare the first image and the second image by comparing the visual intensity of each of the pixels of the first image with the visual intensity of each of the pixels of the second image,determine an area of overlap between the first image and the second image based on the comparison,calculate a change in position of the marker in the second image relative to the marker in the first image based on the area of overlap, anddetect the movement of the object based on the change in position of the marker.
1 Assignment
0 Petitions
Accused Products
Abstract
Systems and methods are provided for detecting a movement of an object marked with a marker. The system includes a sensor configured to capture a first image of the marker and to capture a second image of the marker after the first image, each of the first and second images having pixels each having a visual intensity. A controller is configured to compare the first image and the second image by comparing the visual intensity of each of the pixels of the first image and the second image, determine an area of overlap between the first image and the second image based on the comparison, calculate a change in position of the marker in the second image relative to the marker in the first image based on the area of overlap, and detect the movement of the object based on the change in position of the marker.
-
Citations
20 Claims
-
1. A system for detecting a movement of an object marked with a marker, comprising:
-
a sensor configured to capture a first image of the marker and to capture a second image of the marker after the first image, each of the first and second images comprising pixels each having a visual intensity; and a controller coupled to the sensor and configured to; compare the first image and the second image by comparing the visual intensity of each of the pixels of the first image with the visual intensity of each of the pixels of the second image, determine an area of overlap between the first image and the second image based on the comparison, calculate a change in position of the marker in the second image relative to the marker in the first image based on the area of overlap, and detect the movement of the object based on the change in position of the marker. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 17, 18, 19)
-
-
12. A method for detecting a movement of an object marked with a marker, the method comprising the steps of:
-
capturing a first image of the marker; capturing a second image of the marker, the first and second images comprising pixels, each with a respective visual intensity; comparing the first image and the second image by comparing the visual intensity of each of the pixels of the first image with the visual intensity of each of the pixels of the second image; determining an area of overlap between the first image and the second image based on the comparison; calculating a change in position of the marker in the second image relative to the marker in the first image based on the area of overlap; and detecting the movement of the object based on the change in position of the marker. - View Dependent Claims (13, 14, 15, 16)
-
-
20. A system for detecting a movement of an object marked with a marker in an inertial navigation system, comprising:
-
a sensor configured to capture a first grayscale image of the marker and to capture a second grayscale image of the marker after the first grayscale image, each of the first and second grayscale images comprising pixels each having a grayscale value; and a controller coupled to the sensor and configured to compare the first grayscale image and the second grayscale image by comparing the grayscale values of each of the pixels of the first grayscale image with the grayscale values of each of the pixels of the second grayscale image, determine an area of overlap between the first grayscale image and the second grayscale image based on the comparison, the area of overlap being defined by arcs intersecting at intersection points, the intersection points being joined by a chord with a length, calculate a change in position of the marker in the second grayscale image relative to the marker in the first grayscale image based on the length of the chord, and detect the movement of the object based on the change in position of the marker.
-
Specification