• Transformation of Image Sequences into Pixel-Wise Arrays Each microscopy image sequence was converted into an array representation, where each pixel was tracked across multiple frames. The intensity values were normalized, and temporal changes were recorded, creating a time series for each pixel. This transformation allowed not only the analysis of absolute intensity values but also the characterization of the shapes of intensity change curves. By analyzing these curves rather than single intensity values, we gained deeper insight into the dynamic behavior of the passive film leading up to pitting events.