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physics.ins-det2026
Valley-peak modulation in phase space: a law-invariant VPM and its theta-function structure
Aaron J. Hendrickson, David P. Haefner
Valley-peak modulation (VPM) was introduced as a metric for quantifying read noise in deep sub-electron read noise (DSERN) CMOS image sensors. In its original amplitude-domain defi…
physics.ins-det2025
Initialization-robust characterization of deep sub-electron read noise pixels via annealed PCH-EM
Aaron J. Hendrickson, David P. Haefner
We present an annealed Photon Counting Histogram Expectation Maximization (PCH-EM) algorithm for maximum likelihood characterization of Deep Sub-Electron Read Noise (DSERN) pixels.…
physics.ins-det2024
PCH-EM: A solution to information loss in the photon transfer method
Aaron J. Hendrickson, David P. Haefner, Stanley H. Chan +2
Working from a Poisson-Gaussian noise model, a multi-sample extension of the Photon Counting Histogram Expectation Maximization (PCH-EM) algorithm is derived as a general-purpose a…