SCI Universal Model: Deterministic Spectral Response Normalization

This paper introduces the Spectral Channel Integrity (SCI) universal model — a framework for deterministic spectral response normalization in subtractive media. The inherent limitations of physical pigments — spectral inconsistency, crosstalk, and amplitude imbalance — are addressed through a system of fixed reference levels scaled against a carefully defined spectral limiter. By applying linear normalization, the model transforms a physically inconsistent reflective surface into a more stable information carrier with operationally separable spectral channels. This approach opens possibilities for high-fidelity spectral data encoding and multi-layer visualization, previously restricted mainly to additive emissive systems.