Patent ID: 11954894
Assignee: RIVIAN IP HOLDINGS, LLC
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H  B | IPC B  G  H

Claim 0:
1. A method for determining blockage of a camera, the method comprising:
applying a partition grid comprising a plurality of locations to each image of a sequence of images to form a plurality of regions of each image, wherein each image of the sequence of images is indexed in time;
determining at least one spatial feature corresponding to the partition grid and at least one temporal feature corresponding to the partition grid, wherein:
one or more of the at least one spatial feature or the at least one temporal feature corresponds to a pixel feature characterized by a value that is compared to a dynamic range of values, and
the dynamic range of values is modified based on a computed variation in pixel values in a region of adjacent locations of the partition grid;

generating a sequence of binary classifications for each location of the plurality of locations based on the at least one spatial feature and on the at least one temporal feature;
applying a smoothing technique to the sequence of binary classifications to determine a subset of regions that are blocked; and
generating an output signal based on the subset of regions.