1. A light detection system comprising: a rolling shutter camera for acquiring at least one image of a scene being illuminated by an illumination system comprising at least a first light source providing a light contribution comprising a first embedded code emitted as a temporal sequence of modulations in a characteristics of the light emitted, wherein said image comprises a matrix of pixels, each pixel representing an intensity of a total light output of said illumination system at a different physical position within the scene, and wherein said image is acquired as a plurality of temporal shifted line instances, each comprising an instance of said temporal sequence of modulations of the first embedded code; and a processing unit for determining said first embedded code from the spatial pattern of modulations.