Achieving true magnification in the parallel ghost imaging based on cone beam characteristics of the X-ray tube

Ghost imaging (GI) facilitates image acquisition under low light conditions through single pixel measurements. In parallel ghost imaging, each pixel of the position-sensitive detector is regarded as a bucket detector, and hundreds or even thousands of ghost imaging processes are carried out simultaneously. In our previous work, we extended parallel ghost imaging from synchrotron radiation to X-ray tube. However, a core issue remains unresolved: the object arm signal of the X-ray tube is artificially fitted, and the true magnification relationship between the object arm and reference arm has not been established. In this work, we leverage the cone beam characteristics of the X-ray tube to achieve five-fold true magnification. A series of high-quality ghost imaging results with an effective pixel size of 7.095 µm and an image size of 2880×2280 in pipeline-style acquisition were obtained. The realization of true magnification based on the X-ray tube is a prerequisite for achieving ultra-large field of view and low-dose imaging.