Patent ID: 11954893
Assignee: MICROSOFT TECHNOLOGY LICENSING, LLC
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 5:
6. A method for indexing video comprising:
identifying one or more regions of interest around target content in a frame of a video;
identifying, in a portion of the frame outside a region of interest, potentially empty regions adjacent to the region of interest;
identifying at least one empty region of the potentially empty regions that satisfies criteria, wherein the criteria comprise:
whether an empty region qualifies as empty for not including any of the one or more regions of interest around the target content; and
whether a size of the empty region meets a size threshold;

classifying at least the one empty region that satisfies the criteria as a negative sample of the target content;
identifying at least one empty region of the potentially empty regions that qualifies as empty but does not meet the size threshold; and
discarding the empty region that qualifies as empty but does not meet the size threshold without classifying the empty region as any type of sample of the target content.