Color-based foreign object detection system
AssigneeNorthrop Grumman Systems Corporation
InventorsStephen J. Engel, Robert J. Christ, John Madsen, Jerrell A. Nardiello, Skylar Blaiz Cobb, Scott W. Shaffar
Life of this patent
Estimating the term…
Abstract
Systems and methods are provided for detecting foreign objects in or on a subject of interest. A first set of images is captured of a sample subject known to be free of foreign objects. A plurality of colors from a defined color palette are classified according to a color content of the first set of images into at least first and second classes. A second set of images of the subject of interest are captured. It is determined that a foreign object is present in or on the subject of interest if a color from the first class is present in the second set of images.
Claims20
A method for detecting foreign objects in or on a subject of interest, the method comprising:
- capturing a first set of images of a sample subject known to be free of foreign objects;
- classifying a plurality of colors from a defined color palette according to a color content of the first set of images into at least first and second classes;
- capturing a second set of images of the subject of interest;
- and
- determining if a foreign object is present in or on the subject of interest if a color from the first class is present in the second set of images.
A method for detecting foreign objects in or on a subject of interest, the method comprising:
- capturing a plurality of intensity values for each pixel of a first set of images of a sample subject known to be free of foreign objects, each of the plurality of intensity values being associated with a specific wavelength of visible, infrared, or ultraviolet light a first set of images;
- quantizing each of the plurality of intensity values to a desired resolution, such that a defined color palette according to the desired resolution and a number of intensity values in the plurality of intensity values for each pixel;
- classifying a plurality of colors from the defined color palette according to a color content of the first set of images into at least first and second classes;
- capturing a second set of images of the subject of interest;
- and
- determining if a foreign object is present in or on the subject of interest if a color from the first class is present in the second set of images.
A system for detecting foreign objects in or on a subject of interest comprising:
- an imaging system;
- a system control configured to instruct the imaging system to capture a first set of images of a sample subject known to be free of foreign objects;
- and
- a color selection component configured to select a plurality of colors from a defined color palette according to a color content of the first set of images;
- wherein the system control is further configured to instruct the imaging system to capture a second set of images of the subject of interest and notify a user if a selected color is present in the second set of images.
A non-transitory computer readable medium comprising:
- a system control configured to instruct an imaging system to capture a first set of images of a sample subject known to be free of foreign objects, the system control comprising an imager interface configured to receive the captured first set of images and a user interface configured to receive an input from a user;
- and
- a color selection component configured to classify a plurality of colors from a defined color palette according to a color content of the first set of images into at least first and second classes;
- wherein the system control is further configured to instruct the imaging system to capture a second set of images of a subject of interest, notify a user when color from the first class is present in the second set of images, and receive an input from the user via the user interface indicating if the color represents a foreign object in the subject of interest.
Dependencies are inferred from the claim text.