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
Intensity measure of a random element formula_3 with formula_4. The intensity measure of formula_1 is defined as for all formula_8. Note the difference in notation between the expectation value of a random element formula_3, denoted by formula_4 and the intensity measure of the random measure formula_1, denoted by formula_12. The intensity measure formula_12 is always s-finite and satisfies for every positive measurable function formula_15 on formula_16. Intensity measure In probability theory, an intensity measure is a measure that is derived from a random measure. The intensity measure is a non-random measure and is defined as the expectation value of the random measure