Patent ID: 7319777
Filing Date: 2008-01-15
Classification: G01S,G05D,G08G

Abstract:
1. An image analysis system comprising: a light source; means for illuminating a field of view of interest with the light source; receiving optics for receiving light reflected from the field of view to be analysed; a multiple-region light detector for detecting light received from the receiving optics, wherein different regions of the light detector can be actuated separately; control electronics to synchronise the timing and direction of illumination of the light source and actuation of the light detector; processing means for measuring a time of flight of light signals from the light source to the actuated portion of the detector for all illuminated directions and deriving distances from the times of flight; means for generating a warning if the derived distance is less than a predetermined threshold; and an image capture system configured to capture an image and display the image to a user, the field of view of which is aligned with the field of view of the two dimensional light detector, wherein the two dimensional light detector is used as the detector for the image capture system.