Luminance while imaging luminance meters measure luminance in a way similar to the way a digital camera records color images. Luminance Luminance is a photometric measure of the luminous intensity per unit area of light travelling in a given direction. It describes the amount of light that passes through, is emitted or reflected from a particular area, and falls within a given solid angle. The SI unit for luminance is candela per square metre (cd/m). A non-SI term for the same unit is the nit. The CGS unit of luminance is the stilb, which is equal to one candela per square
Convex measure "μ" is the push-forward on "ν" under a linear or affine map and formula_8 is a convex function, where Convex measures also satisfy a zero-one law: if "G" is a measurable additive subgroup of the vector space "X" (i.e. a measurable linear subspace), then the inner measure of "G" under "μ", must be 0 or 1. (In the case that "μ" is a Radon measure, and hence inner regular, the measure "μ" and its inner measure coincide, so the "μ"-measure of "G" is then 0 or 1.) Convex measure In measure and probability theory in mathematics, a convex measure is