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公开(公告)号：US20240020878A1
公开(公告)日：2024-01-18
申请号：US18348792
申请日：2023-07-07
Applicant: Robert Bosch GmbH
Inventor： Sebastian Nusser , Joachim Boerger , Matthias Ehm
CPC classification number: G06T7/74 , G06V20/54 , G06T2207/10028 , G06T2207/30236 , G06T2207/30244
Abstract: A method and a device for monitoring a field of view of a stationary sensor. The method includes: a first step for receiving recordings of surroundings of the sensor, which are generated at different times within a predefined measuring time frame with the aid of the sensor; a second step for ascertaining, based on the recordings, measuring points, which each represent positions and/or dimensions of objects in the surroundings of the sensor; a third step for grouping the ascertained measuring points based on a predefined similarity metric, where each group of measuring points is represented by a prototype; and a fourth step for ascertaining a change of content within the field of view of the sensor based on a comparison of the prototypes with a reference data set, which includes reference prototypes, whose underlying measuring points are ascertained in a reference state of the sensor and of the surroundings.
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2.发明公开公开(公告)号：US20230314564A1
公开(公告)日：2023-10-05
申请号：US18175667
申请日：2023-02-28
Applicant: Robert Bosch GmbH
Inventor： Marat Kopytjuk , Joachim Boerger , Matthias Ehm , Yann-Ael Muller
CPC classification number: G01S7/4039 , G01S13/89 , G01S7/4021 , G01S17/89 , G01S7/4972
Abstract: A method for recognizing misalignments of a stationary sensor. A first occupancy map is generated based on first sensor data, which the sensor generates at a first point in time. Based on second sensor data, which the sensor generates at a second point in time, a second occupancy map is generated. A cross-correlation of the first occupancy map and of the second occupancy map is calculated. A misalignment of the sensor is recognized based on the calculated cross-correlation.
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