Recognition and correction method of tremor or knock artifact in dark field image templates of detector

Abstract

The invention provides a recognition and correction method of tremor or knock artifact in dark field image templates of a detector. The method includes: 1) acquiring dark field image templates with different acquisition delays as standard image templates; 2) performing bad-pixel search of the standard image templates and performing replacement processing of bad pixels; 3) acquiring clinical dark field image templates; 4) performing bad-pixel search of the clinical dark field image templates and performing replacement processing of the bad pixels; 5) performing offset correction of the clinical dark field image templates after replacement processing of the bad pixels; and 6) performing tremor or knock artifact and lag artifact and leakage current artifact discrimination and recognition of the clinical dark field image templates after offset correction. According to the method, the recognition and correction of tremor or knock artifact can be simply and rapidly accomplished, tremor or knock artifact can be effectively corrected in real time almost without changing the dark field image quality of the normal dark field images, and the anti-trembling or anti-knocking performance of a flat panel detector can be enhanced.

Description

technical field [0001] The invention belongs to the field of X-ray flat-panel detectors, in particular to a method for identifying and correcting tremor or knocking artifacts in a dark-field image template of a detector. Background technique [0002] With the development of related technologies of flat panel detectors, users have higher requirements for the performance of a flat panel detector. There is also a more urgent need for the portability or stability of the detector, that is, it needs to meet the needs of filming at any time and any place. The main challenge for portability and stability is that the detector will encounter various problems during the filming process. For example, when filming, the vibration of the bed frame or the detector support, the movement of the patient, and other causes of vibration, these vibrations will eventually cause the vibration of the detector to a greater or lesser extent, and finally cause tremor artifacts. The impact of artifacts ...

AI Technical Summary

Problems solved by technology

[0003] Aiming at the above-mentioned deficiencies in the prior art, the present invention proposes a method for identifying and correcting tremor or percussion artifacts in the dark-field image template of the detector, which is used to solve the problems of the detector in the prior art in order to reduce tremor artifacts. Influence of dark-field image quality Adding processing components to each component that constitutes the detector to contain vibrations, the problem that adding anti-vibration measures to a certain component alone is ineffective, difficult to analyze, and adding to each component The problem of expensive vibrating parts

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