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This approach is designed to improve robustness in photon-limited regimes and to reduce artifacts that can arise from conventional differencing-based demodulation.\n\n**specNorm (Spectral Normalization):**\n\nA hyperspectral normalization workflow that stabilizes Chem-SIM spectra across wavenumbers and helps decouple chemical contrast from fluorescence brightness variations. specNorm performs intensity referencing and spectral scaling to yield consistent, comparable spectra across pixels and across 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