System and method for detecting blobs on an end surface of an optical fiber
AssigneeCiena Corporation
InventorsWonoh Kim, Darryl S. Ennels
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Abstract
An embodiment of the invention is a method for detecting defects in an optical fiber. The method includes obtaining an image of the optical fiber and separating a portion of the image for processing. A blob threshold is determined to isolate a blob in the portion of the image and characteristics of the portion of the image are adjusted to enhance detection of the blob. One or more blobs are detected in the image and a characteristic of the detected blobs is compared to blob criteria. The optical fiber is failed if the blob criteria are not met.
Claims29
A method for detecting defects in an optical fiber, the method comprising:
- obtaining an image of the optical fiber;
- separating a portion of the image for processing;
- determining a blob threshold based on intensities in the portion of the image, to isolate a blob in the portion of the image;
- adjusting characteristics of the portion of the image to enhance detection of the blob;
- identifying the blob in the image referring to the determined blob threshold;
- comparing a characteristic of the blob to blob criteria;
- and
- failing the optical fiber if the blob criteria is not met.
A storage medium encoded with machine-readable computer program code for detecting defects in an optical fiber, the storage medium including instructions for causing a computer to implement a method comprising:
- obtaining an image of the optical fiber;
- separating a portion of the image for processing;
- determining a blob threshold based on intensities in the portion of the image, to isolate a blob in the portion of the image;
- adjusting characteristics of the portion of the image to enhance detection of the blob;
- identifying the blob in the image referring to the determined blob threshold;
- comparing a characteristic of the blob to blob criteria;
- and
- failing the optical fiber if the blob criteria is not met.
A method for detecting defects in an optical fiber, the method comprising:
- obtaining an image of the optical fiber;
- separating a portion of the image for processing;
- determining a scratch threshold based on intensities in the portion of the image, to isolate a scratch in the portion of the image;
- adjusting characteristics of the portion of the image to enhance detection of the scratch;
- identifying the scratch in the image referring to the determined scratch threshold;
- comparing a characteristic of the scratch to scratch criteria;
- and
- failing the optical fiber if the scratch criteria is not met.
A storage medium encoded with machine-readable computer program code for detecting defects in an optical fiber, the storage medium including instructions for causing a computer to implement a method comprising:
- obtaining an image of the optical fiber;
- separating a portion of the image for processing;
- determining a scratch threshold based on intensities in the portion of the image, to isolate a scratch in the portion of the image;
- adjusting characteristics of the portion of the image to enhance detection of the scratch;
- identifying the scratch in the image referring to the determined scratch threshold;
- comparing a characteristic of the scratch to scratch criteria;
- and
- failing the optical fiber if the scratch criteria is not met.
Dependencies are inferred from the claim text.