US 12,142,059 B2
System and method for dynamic dimensioning of vehicle and trailer from shadow profiling
Utkarsh Saini, Pickering (CA); Steffen P Lindenthal, Oshawa (CA); Sai Vishnu Aluru, Commerce Twpl., MI (US); Sravan Daruri, Walled Lake, MI (US); Norman J Weigert, Whitby (CA); and Fred W Huntzicker, Ann Arbor, MI (US)
Assigned to GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US)
Filed by GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US)
Filed on Jun. 8, 2022, as Appl. No. 17/806,023.
Prior Publication US 2023/0401872 A1, Dec. 14, 2023
Int. Cl. G06K 9/00 (2022.01); A61K 35/12 (2015.01); B60W 40/09 (2012.01); G06V 20/58 (2022.01)
CPC G06V 20/58 (2022.01) [B60W 40/09 (2013.01); B60W 2420/403 (2013.01); B60W 2540/30 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A dimension calculation system in a host vehicle for dynamically calculating a vehicle dimension using solar shadow information, the dimension calculation system comprising a controller, the controller configured to:
calculate solar position and an expected vehicle shadow based on geocode location, time, and vehicle dynamics;
detect one or more actual vehicle shadows in one or more images from vehicle cameras;
compare the one or more actual vehicle shadows to one or more expected vehicle shadows;
determine a dimension profile and max height point for a vehicle plus vehicle cargo based on a comparison of one or more actual vehicle shadows to the one or more expected vehicle shadows;
calculate a confidence level for the dimension profile and max height point for the vehicle plus cargo based on: how many observed shadows are used to determine the dimension profile and max height point, how many different vehicle travel directions are represented by the observed shadows, and magnitude and intensity of the observed shadows; and
use the dimension profile and max height point to provide one or more dimension notifications when the confidence level for the dimension profile and max height point for the vehicle plus cargo are above a first threshold level.