The DR imaging system is mainly composed of an X-ray source, a flat panel detector, an industrial computer, and the like. The X-ray source emits X-ray photons, which are transmitted by the flat panel detector after being penetrated into the workpiece and converted into electrical signals. Then A/D lives in Annu according to the circuit to convert it into digital information, and the digital information is transmitted to the calculation. The associated process forms and displays a digital image. The DR detection system has been gradually applied to industrial inspection in recent years. With the development of technology, the performance of the detector is continuously optimized. The image quality of the DR imaging system is close to that of film imaging, and the defect detection rate is much higher than that of the film imaging system.
DR testing provides reliable evidence and accurate information for industrial testing and disease diagnosis. In the research of DR detection technology, how to obtain high-quality, low-distortion images has always been its focus and southern section. There are still many problems with DR detection technology that need to be solved. For example, the spatial resolution is low, and the meta-correspondence is not consistent.
Key technologies in the DR detection process:
(1) Correcting the flat panel detector. The structural noise of the flat panel detector will have a great impact on the image quality. To obtain an image with a high signal to noise ratio, the detector must first be accurately corrected.
(2) Digital image display and processing technology. Since the DR image itself is digitized, it can be restored or enhanced by processing the image by related digital image processing techniques. Thereby continuously improving the actual quality of the DR image and improving its detection efficiency. This requires that when processing an image, it is particularly important to try to remove the noise and to obtain as much information as possible about the original image that is not distorted.
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