System and method for laminography inspection
First Claim
1. A laminography inspection system comprising:
- an irradiation source;
a plurality of linear image detectors defining an image plane;
a site for placement of a test object in a stationary position between the irradiation source and the image detectors; and
a computing device adapted to compute shift and scale factors and apply the shift and scale factors for combining a plurality of images of the test object acquired from the image detectors to generate a cross-sectional image of a selected section within the test object, wherein the computing device is configured to;
process the acquired images through a stereo imaging method to determine a warp compensation of the test object, andapply the warp compensation in the computation of the shift and scale factors;
wherein the irradiation source and the image detectors are configured to scan the test object through a cycle of parallel linear scanning passes spanning across the area of the test object to acquire images of the test object under different viewing angles.
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Abstract
A laminography inspection system comprises an irradiation source, a plurality of linear image detectors defining an image plane, a fixed table for placement of a test object in a stationary position between the irradiation source and the image detectors, and a computing device for processing a plurality of images of the test object acquired from the image detectors. The irradiation source and the image detectors perform a plurality of parallel linear scanning passes across the area of the test object to acquire images of the test object under different viewing angles. Based on the acquired image data, the computing device determines a warp compensation and generates a cross-sectional image of a selected section within the test object.
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Citations
14 Claims
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1. A laminography inspection system comprising:
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an irradiation source; a plurality of linear image detectors defining an image plane; a site for placement of a test object in a stationary position between the irradiation source and the image detectors; and a computing device adapted to compute shift and scale factors and apply the shift and scale factors for combining a plurality of images of the test object acquired from the image detectors to generate a cross-sectional image of a selected section within the test object, wherein the computing device is configured to; process the acquired images through a stereo imaging method to determine a warp compensation of the test object, and apply the warp compensation in the computation of the shift and scale factors; wherein the irradiation source and the image detectors are configured to scan the test object through a cycle of parallel linear scanning passes spanning across the area of the test object to acquire images of the test object under different viewing angles. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A laminography inspection method comprising:
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performing a plurality of parallel linear scanning passes across an area of a test object in a stationary position to acquire a plurality of image data of the test object under different viewing angles; processing the acquired image data through a stereo imaging method to determine a warp compensation of the test object; applying the warp compensation for computing shift and scale factors; and combining the image data with the shift and scale factors to reconstruct a cross-sectional image of a selected section within the test object. - View Dependent Claims (11, 12, 13, 14)
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Specification