US 12,277,783 B2
Annotation of objects in image frames
Willem Verbeke, Gothenburg (SE); William Ljungbergh, Gothenburg (SE); and Olle Månsson, Gothenburg (SE)
Assigned to Zenseact AB, Gothenburg (SE)
Filed by Zenseact AB, Gothenburg (SE)
Filed on Jul. 5, 2023, as Appl. No. 18/347,019.
Prior Publication US 2024/0013560 A1, Jan. 11, 2024
Int. Cl. H04N 7/18 (2006.01); G06T 7/20 (2017.01); G06V 10/60 (2022.01); G06V 20/56 (2022.01); G06V 20/70 (2022.01)
CPC G06V 20/70 (2022.01) [G06T 7/20 (2013.01); G06V 10/60 (2022.01); G06V 20/56 (2022.01); G06T 2207/30236 (2013.01); G06T 2207/30252 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method performed by an annotation system for supporting annotation of objects in image frames of a traffic environment-related video sequence, the method comprising:
determining an annotation of an object in an image frame of the video sequence, the annotation comprising at least a first property of the object;
tracking the object through the video sequence;
assigning the at least first object property to the object in one or more previous and/or subsequent image frames of the video sequence;
identifying at least a first of one or both of the previous and subsequent image frames in which one or more:
pixel area dimensions of the object are below one or both of an object type- and property type-specific threshold stipulating pixel area dimensions below which the at least first object property is defined undetectable; and
motion blur in pixels of at least a predeterminable portion of the object exceeds a motion blur threshold stipulating a motion blur level above which the at least first object property is defined undetectable; and
brightness in pixels of at least a predeterminable portion of the object exceeds a brightness threshold stipulating a brightness level above which the at least first object property is defined undetectable; and
appointing the at least first identified image frame as annotation data.