Video Preview Event Detection via Audio Analysis
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Solution Overview
Problem
Video monitoring devices generate large amounts of data, making it challenging for users to review videos in their entirety, as existing methods for previewing videos may miss special events and lack effective indication of significant occurrences.
Innovation Solution
A system and method that includes a camera and a processing server to detect special events such as objects or sounds in the video, extracting relevant video preview frames or audio segments, and generating a preview video to highlight these events, allowing users to efficiently review critical moments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If video preview frames are extracted every certain period of time, then the implementation is simple, but special events may be missed
Solution Approach 1:
The patent extracts only the essential and meaningful parts of the video content by using audio analysis to identify segments containing special events (such as crying, screaming, or other abnormal sounds). Instead of uniformly sampling frames at fixed intervals, the system extracts video segments corresponding to detected audio events, thereby capturing critical moments while avoiding unnecessary data processing.
Solution Approach 2:
The system employs audio analysis as a feedback mechanism to dynamically guide video frame extraction. The audio processing continuously monitors the video stream and provides feedback about special events, which then triggers selective extraction of video segments. This feedback loop ensures that preview frames are generated based on actual event occurrence rather than fixed timing, improving event detection accuracy.
2Ease of operation
If only regular video preview frames are displayed, then the review process is simple, but users may miss special events without indication
Solution Approach 1:
The patent uses visual differentiation (analogous to color changes) by displaying preview frames corresponding to special events with distinct visual characteristics. The system highlights event-related frames through visual cues such as borders, overlays, or positioning differences, enabling users to quickly identify and focus on important moments during video review without complicating the overall interface.
Solution Approach 2:
The patent segments the video review process into two distinct parts: regular preview frames for general overview and special event preview frames for critical moments. By separating event-related content from ordinary content and presenting them in a structured manner (such as event thumbnails alongside the main video), the system maintains operational simplicity while ensuring users do not miss important events.
Data Source
AI summary
A device for previewing a video includes a memory device configured to store instructions, and one or more processors configured to execute the instructions to receive a video captured by a camera and analyze the video. The one or more processors are also configured to detect a special event from the analysis of the video. The special event includes at least one of an object, a moving object, or a sound detected in the video. The one or more processors are further configured to extract, from the video, at least one of a video preview frame or audio segment corresponding to the special event, and generate a preview video including the at least one of the video preview frame or audio segment corresponding to the special event.