Perception as an Interface-Induced Metric Structure: A Structural Reading of Color Geometry

This technical note offers a structural interpretation of recent geometric formalizations in color science, where hue, saturation, and brightness can be rigorously modeled as emergent properties of intrinsic chromatic geometry. Rather than introducing additional explanatory layers (cultural, symbolic, or experiential), this note clarifies how qualitative perceptual distinctions may arise as invariant properties of a metric space induced by a finite discriminative interface. By framing perception as the realization of an interface-induced geometry over a stimulus domain, the note highlights a general methodological principle: finite interfaces do not merely filter stimuli, but induce structured metric organizations within accessible domains. Within such induced spaces, qualitative distinctions can emerge as geometric invariants. The purpose of this contribution is conceptual and structural. It does not propose new experimental results, nor does it revise existing models in color science. Instead, it articulates a broader interpretative stance regarding the relationship between metric structure, discriminative capacity, and phenomenological organization.