Objective. The noise characteristics of digital x-ray imaging devices are determined by
contributions such as photon noise, electronic noise, and fixed pattern noise, and can be …

Frequency estimation is a pivotal process in many signal-processing applications.
Generating radar range profiles for linear frequency modulated radar systems is such a case …

Purpose Accurately and precisely estimating the noise power spectrum (NPS) is important
for characterizing the performance of a radiography detector and helpful for improving the …

In fluoroscopic imaging, we can acquire x-ray image sequences using a flat-panel dynamic
radiography detector. Because of the charge trapping at photodiodes, lag signals occur at …

Objective: In this paper, a novel dual-layer detector is considered to acquire X-ray images of
high signal-to-noise ratio (SNR) as well as detective quantum efficiency (DQE) especially for …

Lag signals occur at images sequentially acquired from a flat-panel (FP) dynamic detector in
fluoroscopic imaging due to charge trapping in photodiodes and incomplete readouts. This …

For fluoroscopic imaging, flat-panel dynamic detectors can acquire X-ray image sequences
with frame rates higher than 300 frames per second. However, the sequentially acquired …

The noise power spectrum (NPS) at zero frequency can represent a global noise property of
a system and is the sum of the covariances with lags. As the lag increases, an estimate of …

Performance of digital radiography detectors can be evaluated from measuring the noise
power spectrum (NPS), modulation transfer function, and detective quantum efficiency …

The noise power spectrum (NPS) of a digital x-ray imaging device is usually estimated from
the average of periodograms of ROIs in images obtained with uniform radiation fields. The …