Method and system for 2D detection of localized light contributions

摘要

The invention relates to a detection system for determining whether a light contribution of a light source is present at a selected position within a 2D scene. The light contribution includes an embedded code comprising a repeating sequence of N symbols. The detection system includes a camera and a processing unit. The camera is configured to acquire a series of images of the scene via specific open/closure patterns of the shutter. Each image includes a plurality of pixels, each pixel representing an intensity of the light output of the light source at a different physical position within the scene. The processing unit is configured to process the acquired series of images to determine whether the light contribution of the first light source is present at the selected physical position within the scene by e.g. correlating a sequence of pixels of the acquired series corresponding to the selected physical position with the first sequence of N symbols.

主权项

1. A detection system for determining whether a light contribution of a first light source of an illumination system is present at a selected position within a scene; wherein the light contribution of the first light source includes a first embedded code comprising a repeating first sequence of N symbols, the detection system comprising:
a camera configured to acquire a series of images of the scene, wherein:
each acquired image includes a plurality of pixels, each pixel representing an intensity of a total light output of the illumination system at a different physical position within the scene and the total light output of the illumination system comprising at least the light contribution of the first light source,the series comprises at least N different images, andeach image of the at least N different images is acquired with a total exposure time comprising one or more exposure instances at different temporal positions within the repeating first sequence of N symbols; and a processing unit configured to process the acquired series of images to determine that the light contribution of the first light source is present at the selected physical position.