Method and device for spatial resolution verification of a timepix3 detector

By using a pinhole imaging geometric model and multiple noise removal techniques, a spatial resolution verification device and method suitable for the Timepix3 detector were constructed. This solved the problem that existing technologies could not accurately reflect spatial resolution performance under actual working conditions, achieving quantitative verification and improving the reliability of test results.

CN122194232APending Publication Date: 2026-06-12HEFEI INSTITUTE OF PHYSICAL SCIENCE CHINESE ACADEMY OF SCIENCES
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HEFEI INSTITUTE OF PHYSICAL SCIENCE CHINESE ACADEMY OF SCIENCES
Filing Date
2026-05-13
Publication Date
2026-06-12

AI Technical Summary

⚠Technical Problem

Existing methods cannot accurately reflect the spatial resolution performance of the Timepix3 detector under actual working conditions, and lack quantitative judgment criteria, resulting in poor repeatability and objectivity of test results.

⚗Method used

Using a pinhole imaging geometric model, an equivalent strip light source is formed by a grid module and a moving X-ray tube. Combining the centroid method and multiple noise removal techniques, and using a resolution contrast parameter value of less than 0.7 as a quantitative criterion, a spatial resolution verification device and method suitable for the Timepix3 detector are constructed.

🎯Benefits of technology

This study achieved accurate and quantitative verification of the spatial resolution capability of the Timepix3 detector, overcame the shortcomings of theoretical calculations, improved the accuracy and reliability of test results, and simplified the operation process.

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Abstract

The application discloses a kind of spatial resolution verification method and device of Timepix3 detector, belong to X ray imaging technical field.The device includes Timepix3 detector, grid module, pinhole module and electrically controlled translation stage;Grid module is used to cooperate with X ray tube and produce the radiation distribution with specific spatial structure, pinhole module is set between grid module and Timepix3 detector for imaging, electrically controlled translation stage is used to control X ray tube and move at constant speed along the direction parallel to grid module.Form equivalent strip light source by X ray tube cooperation grid module;Control X ray tube and move at constant speed and collect multiple frames pinhole module imaging image;Reconstruct and remove noise to imaging image, superimpose denoising image;The intensity distribution of light and shade stripe in superimposed image is analyzed, if there is distinguishable wave crest and wave trough, then it is judged to have corresponding spatial resolution capability.The application is simple and easy to operate, and the result is objective and reliable.
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