MONITORING OF ON-BOARD VEHICLE IMAGE CAPTURING DEVICE FUNCTIONALITY COMPLIANCE

The present disclosure relates to a method performed by a luminance assessment system (1) of a vehicle (2) for monitoring of on-board vehicle image capturing device functionality compliance with a predeterminable requirement level. The vehicle comprises two or more image capturing devices (3) adapted to capture surroundings of the vehicle, wherein a first image capturing device (31) has a first field of view (41) and a second image capturing device (32) has a second field of view (42) with a primary region (421) thereof at least partly overlapping the first field of view. The luminance assessment system obtains 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, wherein a first section of the respective first images and a second section of the respective second images respectively covers the primary region. The luminance assessment system further measures for respective first image a respective first luminance value of the first section, and for respective second image a respective second luminance value of the second section. Moreover, the luminance assessment system determines (1005) a luminance deviation based on comparing at least one of the respective first luminance values to at least one of the respective second luminance values. The luminance assessment system furthermore determines, when the luminance deviation exceeds a deviation threshold, that the first image capturing device or the second image capturing device fails to function according to the requirement level.The disclosure also relates to a corresponding computer program product and non-volatile computer readable storage medium.