US 11,962,912 B2
Object detection via comparison of synchronized pulsed illumination and camera imaging
Morgan D. Murphy, Kokomo, IN (US); and Ronald M. Taylor, Greentown, IN (US)
Assigned to Aptiv Technologies AG, Schaffhausen (CH)
Filed by Aptiv Technologies Limited, St. Michael (BB)
Filed on Jun. 16, 2021, as Appl. No. 17/349,642.
Prior Publication US 2022/0408005 A1, Dec. 22, 2022
Int. Cl. H04N 23/72 (2023.01); B60Q 1/00 (2006.01); B60R 11/04 (2006.01); G01S 17/86 (2020.01); G01S 17/894 (2020.01); G05D 1/00 (2006.01); G05D 1/02 (2020.01); G06V 20/58 (2022.01)
CPC H04N 23/72 (2023.01) [B60Q 1/0023 (2013.01); B60R 11/04 (2013.01); G01S 17/86 (2020.01); G01S 17/894 (2020.01); G05D 1/0251 (2013.01); G06V 20/58 (2022.01); G05D 2201/0213 (2013.01)] 24 Claims
OG exemplary drawing
 
1. An image processing system comprising:
a global shutter camera;
a pulsed laser illumination source; and
a processing system comprising at least one processor and memory, the processing system configured to control the image processing system to:
control the pulsed laser illumination source to illuminate a scene;
control the global shutter camera to capture a sequence of images of the scene, wherein the captured sequence of images includes images that are captured without illumination of the scene by the pulsed laser illumination source and images that are captured while the scene is illuminated by the pulsed laser illumination source; and
determine presence of an object in the scene based on comparison of the
images captured without illumination of the scene and images captured with illumination of the scene,
wherein, when capturing an image while the scene is illuminated by the pulsed laser illumination source, the pulsed laser illumination source is controlled to provide illumination during an integration time of each pixel row of the global shutter camera for the image and without providing the illumination during an entire frame period of the image, and
wherein the pulsed laser illumination source comprises a focused diode laser array including:
a flat surface and a spherical surface,
a collimation lens comprising two spherical surfaces,
two horizontal divergence lenses comprising two spherical surfaces and two cylindrical surfaces, and
two vertical divergence lenses comprising two spherical surfaces and two cylindrical surfaces.