US 2019/0244342 A1 · ANALYSIS APPARATUS, ANALYSIS METHOD, AND STORAGE MEDIUM

Abstract

The analysis apparatus (2000) includes a co-appearance event extraction unit (2020) and a frequent event detection unit (2040). The co-appearance event extraction unit (2020) extracts co-appearance events of two or more persons from each of a plurality of sub video frame sequences. The sub video frame sequence is included in a video frame sequence. The analysis apparatus (2000) may obtain the plurality of sub video frame sequences from one or more of the video frame sequences. The one or more of the video frame sequences may be generated by one or more of surveillance cameras. Each of the sub video frame sequences has a predetermined time length. The frequent event detection unit (2040) detects co-appearance events of the same persons occurring at a frequency higher than or equal to a pre-determined frequency threshold.

Claims12

Dependent claims

An analysis apparatus comprising:

at least one memory storing instructions;
and
at least one processor executing the instructions to perform:
extracting a co-appearance event of size N (>2) from a video frame sequence, wherein the co-appearance event is that an unspecified combination of persons appears in the video frame sequence among a predetermined time window and the size represents a number of persons comprising the unspecified combination;
and
assigning a label to each of feature-values extracted from video frames of the video frame sequences, the feature-value indicating a feature of a person;
assigning the same label to the feature-values indicating the same person and assigning different label to the feature-values indicating different person;
and
outputting information indicating the co-appearance event of size N (>2) when the co-appearance event of size N (>2) occurred at a frequency higher than or equal to a pre-determined threshold.

6 more elements

An analysis method comprising:

extracting a co-appearance event of size N (>2) from a video frame sequence, wherein the co-appearance event is that an unspecified combination of persons appears in the video frame sequence among a predetermined time window and the size represents a number of persons comprising the unspecified combination;
and
assigning a label to each of feature-values extracted from video frames of the video frame sequences, the feature-value indicating a feature of a person;
assigning the same label to the feature-values indicating the same person and assigning different label to the feature-values indicating different person;
and
outputting information indicating the co-appearance event of size N (>2) when the co-appearance event of size N (>2) occurred at a frequency higher than or equal to a pre-determined threshold.

3 more elements

A non-statutory recording medium storing computer programs, the computer program causing a computer to perform:

extracting a co-appearance event of size N (>2) from a video frame sequence, wherein the co-appearance event is that an unspecified combination of persons appears in the video frame sequence among a predetermined time window and the size represents a number of persons comprising the unspecified combination;
and
assigning a label to each of feature-values extracted from video frames of the video frame sequences, the feature-value indicating a feature of a person;
assigning the same label to the feature-values indicating the same person and assigning different label to the feature-values indicating different person;
and
outputting information indicating the co-appearance event of size N (>2) when the co-appearance event of size N (>2) occurred at a frequency higher than or equal to a pre-determined threshold.

3 more elements

Dependencies are inferred from the claim text.

Analysis apparatus, analysis method, and storage medium

Life of this patent

Analysis apparatus, analysis method, and storage medium

Life of this patent

Abstract

Claims12