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 characteristics of emitted light, wherein said at least one 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 at least one 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 a spatial pattern of modulations, wherein the processing unit is configured to identify different bits of said first embedded code in different lines of pixels of a single frame captured by the rolling shutter camera, the different bits originating from a same light source of the at least a first light source.