Patent Document ID: 7652238
Application ID: 11208364
Patent Status: 1

Claim One:
1. A method for detecting an object inside a monitored zone, in which at least two sensors respectively monitor at least a part of the monitored zone, each sensor having a processing unit, comprising: each sensor generating a single digital image of the total monitored zone with the single images of all sensors being generated in a uniform coordinate system common to all sensors; said processing unit of each sensor flagging as “safe” those coordinate points of said single image previously generated by the respective sensor which are recognized as free of the object and flagging as “unsafe” all other coordinate points of said single image previously generated by the respective sensor, wherein said flagging step is separate from said step of generating said single image; transmitting the generated and flagged single images to an evaluation unit, where the evaluation unit is separate from all of the processing units of said sensors; superimposing the transmitted single images using the evaluation unit to form a resulting total image in accordance with their common coordinate system, wherein coordinate points of the total image are flagged as “safe”, which correspond to coordinate points flagged as “safe” in at least one of the single images, and wherein any remaining coordinate points of the total image are flagged as “unsafe”; and determining coordinates of the object using the coordinate points flagged as “unsafe” in the total image.