System and method for detection of ground glass objects and nodules
First Claim
Patent Images
1. A method for detecting ground glass objects in a digitized medical image comprising the steps of:
- providing a digitized medical image comprising a plurality of intensities corresponding to a domain of points on an N-dimensional grid;
determining intensity statistics from a plurality of ground glass objects;
determining an intensity map of the distance of each point in said image from a mean intensity of said ground glass objects wherein one or more candidate ground glass objects can be identified;
determining a circularity value for each candidate ground glass object; and
calculating one or more feature values wherein said candidate ground glass object is characterized, wherein said circularity value and features values are adapted to distinguishing an actual ground glass object from a candidate ground glass object.
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Abstract
A method for detecting ground glass objects in a digitized image comprises the steps of determining intensity statistics from a plurality of ground glass objects, determining an intensity map of the distance of each point in an image from a mean intensity of said ground glass objects wherein one or more candidate ground glass objects can be identified, determining a circularity value for each candidate ground glass object, and calculating one or more feature values wherein said candidate ground glass object is characterized.
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Citations
25 Claims
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1. A method for detecting ground glass objects in a digitized medical image comprising the steps of:
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providing a digitized medical image comprising a plurality of intensities corresponding to a domain of points on an N-dimensional grid; determining intensity statistics from a plurality of ground glass objects; determining an intensity map of the distance of each point in said image from a mean intensity of said ground glass objects wherein one or more candidate ground glass objects can be identified; determining a circularity value for each candidate ground glass object; and calculating one or more feature values wherein said candidate ground glass object is characterized, wherein said circularity value and features values are adapted to distinguishing an actual ground glass object from a candidate ground glass object. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method for a computer processor to detect ground glass objects in a digitized medical image, said method comprising the steps of:
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determining an intensity map of the distance of each pixel in the medical image from a mean intensity of said ground glass objects wherein one or more contiguous collections of points are identified as candidate ground glass objects; determining a circularity value for each candidate ground glass object; calculating one or more intensity level co-occurrence matrices for each candidate object, wherein each co-occurrence matrix is calculated for pixel pairs at a predetermined pixel pair separation distance and angular orientation; and calculating one or more feature values from said co-occurrence matrices. - View Dependent Claims (13, 14)
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15. A program storage device readable by a computer, tangibly embodying a program of instructions executable by the computer to perform the method steps for detecting ground glass objects in a digitized medical image, said method comprising the steps of:
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providing a digitized medical image comprising a plurality of intensities corresponding to a domain of points on an N-dimensional grid; determining intensity statistics from a plurality of ground glass objects; determining an intensity map of the distance of each point in said image from a mean intensity of said ground glass objects wherein one or more candidate ground glass objects can be identified; determining a circularity value for each candidate ground glass object; and calculating one or more feature values wherein said candidate ground glass object is characterized. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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Specification