US 12,014,512 B2
System adapted to detect road condition in a vehicle and a method thereof
Calagandhra Harinath Suman Reddy, Tirupati (IN); Hegde Anand Ashok, Bangalore (IN); Nemani Rama Aditya, Bangalore (IN); and Sathish Kumar Jayaraj, Bangalore (IN)
Assigned to Robert Bosch GmbH, Stuttgart (DE)
Filed by Robert Bosch GmbH, Stuttgart (DE); and Robert Bosch Engineering and Business Solutions Private Limited, Karnataka (IN)
Filed on Jul. 12, 2022, as Appl. No. 17/863,087.
Claims priority of application No. 202141032310 (IN), filed on Jul. 19, 2021.
Prior Publication US 2023/0046137 A1, Feb. 16, 2023
Int. Cl. G06T 7/62 (2017.01); G06T 7/60 (2017.01)
CPC G06T 7/60 (2013.01) [G06T 2207/30252 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A system adapted to detect road condition in a vehicle, comprising:
a laser source configured to project geometrical laser projections on the road;
an imaging unit configured to capture images of the geometrical projections; and
at least one processing unit configured to:
calculate a surface reflectance for the projected geometrical projection;
compute geometrical parameters of the projections at regular time intervals based on the captured images; and
determine a road condition based on the surface reflectance and the geometrical parameters,
wherein the surface reflectance is a ratio of reflected radiant flux to an incident flux at the road,
wherein the geometrical projections include an ellipse,
wherein the captured images include images of the projected ellipse as distorted by the road, and
wherein the at least one processing unit is configured to determine the road condition by analyzing the distortion of the projected ellipse as included in the captured images.