Method for determining the storage functionality of an imaging plate for X-ray images
AssigneeDüRr Dental SE
InventorsAlexander Hack, Alexander Ladikos, Simon Jagoda, Matthias Wieczorek
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Abstract
This invention is related to a method for determining the storage quality of an X-ray imaging plate, including the steps of: providing a plurality of digital X-ray images of the imaging plate; performing a cross-correlation operation on the X-ray images for relevant image regions; creating feature images from the correlation values; classifying the functionality of a pixel of a feature image based on the number of pixels in the vicinity of the pixel whose correlation value exceeds a correlation threshold. Further, the invention also relates to an apparatus.
Claims14
A method for determination of the storage functionality of an X-ray imaging plate, comprising the steps of:
- a) providing a plurality of digital X-ray images of the X-ray imaging plate;
- b) performing a cross-correlation operation on the digital X-ray images for relevant image regions to generate correlation values, wherein each of the plurality of digital X-ray images comprises a plurality of correlation fields, wherein the step of performing a cross-correlation operation comprises, for each of the plurality of correlation fields, calculating a mean value mi and a standard deviation si in each of the plurality of correlation fields of each of the plurality of digital X-ray images to generate value matrices that are approximately the size of each of the plurality of digital X-ray images;
- c) creating feature images from the correlation values;
- and
- d) classifying the storage functionality of the X-ray imaging plate, wherein the classifying corresponds to a pixel of a feature image based on the correlation values of other pixels in the vicinity of the pixel, wherein the pixel is classified as faulty if the number of other pixels in the vicinity have correlation values that exceed a correlation threshold.
Dependencies are inferred from the claim text.