	US 11,993,274 B2
	Monitoring of on-board vehicle image capturing device functionality compliance
Robert Krutsch, Munich (DE); and Valor Yaldo, Bloomfield, MI (US)
Assigned to Zenuity AB, Gothenburg (SE)
Filed by Zenuity AB, Gothenburg (SE)
Filed on Sep. 16, 2020, as Appl. No. 17/022,948.
Prior Publication US 2022/0080986 A1, Mar. 17, 2022
Int. Cl. B60W 50/02 (2012.01); B60W 50/04 (2006.01); G06T 7/00 (2017.01); G06T 7/80 (2017.01)

CPC B60W 50/0205 (2013.01) [B60W 50/04 (2013.01); G06T 7/80 (2017.01); G06T 7/97 (2017.01); B60W 2050/021 (2013.01); B60W 2050/0215 (2013.01); B60W 2420/403 (2013.01)]

16 Claims

1. A method performed by a luminance assessment system of a vehicle for monitoring of on-board vehicle image capturing device functionality compliance with a predeterminable requirement level, the vehicle comprising two or more image capturing devices configured to capture surroundings of the vehicle, a first image capturing device having a first field of view and a second image capturing device having a second field of view with a primary region thereof at least partly overlapping the first field of view, the method comprising:

obtaining at respective one or more time instants (t₁, t₂, t₃), a respective first image with support from the first image capturing device and a respective second image with support from the second image capturing device, a first section of the respective first image and a second section of the respective second image respectively covering the primary region;

measuring for respective first image a respective first luminance value based on measurements of a plurality of pixels of the first section, and for respective second image a respective second luminance value based on measurements of a plurality of pixels of the second section;

determining a luminance deviation exceeds a deviation threshold, the luminance deviation being based on a comparison of at least one of the respective first luminance values to at least one of the respective second luminance values;

determining, with support from a positioning system, a position of the vehicle;

localizing, based on the position of the vehicle, the vehicle in a digital map;

determining, based on the position of the vehicle in the digital map, that there is no presence of an image luminance affecting element within an image capturing device range of the vehicle, the image luminance affecting element being a light-obstructing element; and

determining, based on the luminance deviation exceeding the deviation threshold and there being no presence of the image luminance affecting element within the image capturing device range of the vehicle, that one of the first image capturing device and the second image capturing device fails to function according to the requirement level.