A control chart for monitoring image processes based on convolutional neural networks

Yarema Okhrin, Wolfgang Schmid and Ivan Semeniuk

Statistica Neerlandica, 2025, vol. 79, issue 1

Abstract: In this paper, the problem of monitoring image processes with spatially correlated pixels over time is considered. An exponentially weighted moving average (EWMA) control chart for monitoring such processes based on a convolutional neural network (CNN) is proposed. A comparison of its performance with a Hotelling's T2 control chart and with a control chart based on generalized likelihood ratio (GLR) approach is conducted through a simulation study. The new method outperforms other methods in most of the cases considered in the simulation study. A technique for mean intensity shift localization based on CNNs is proposed and evaluated.

Date: 2025
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