Motion-Adaptive Video Playback for Surveillance Recorders
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Solution Overview
Problem
Existing monitoring camera systems require significant time and complex operations for a monitoring person to check video content, especially when investigating incidents, due to uniform video reproduction speeds regardless of motion detection.
Innovation Solution
A monitoring camera system that captures images, detects motion, associates this information with video data, and transmits it to a recorder, which reproduces video at faster speeds when no motion is detected, allowing for designated target frames to dictate reproduction speed based on motion presence.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If video is reproduced at uniform speed regardless of motion detection, then simple reproduction control is achieved, but content check time becomes excessively long
Solution Approach 1:
The reproduction speed is made dynamic by automatically adjusting it based on motion detection results. The system changes playback speed according to whether motion is detected in each video section, eliminating the need for manual fast-forward operations while significantly reducing content check time.
Solution Approach 2:
The system uses motion detection feedback to control reproduction speed. Motion detection results are fed back to the reproduction control mechanism, which automatically adjusts playback speed based on the presence or absence of detected motion in different video sections.
2Loss of time
If manual fast-forward operation is used to skip non-motion sections, then content check time is reduced, but operation complexity increases
Solution Approach 1:
The system performs self-service by automatically controlling reproduction speed based on motion detection results. The monitoring person does not need to manually operate fast-forward buttons; the system autonomously determines and adjusts playback speed to minimize content check time.
Solution Approach 2:
The reproduction speed dynamically adapts to content importance. Sections with detected motion are reproduced at normal speed for detailed observation, while sections without motion are automatically reproduced at fast-forward speed, eliminating manual intervention.
3Reliability
If video sections without motion are reproduced at normal speed, then observation quality is maintained, but total reproduction time increases
Solution Approach 1:
Different reproduction speeds are applied to different local sections of the video based on motion detection results. Motion-containing sections receive normal-speed reproduction for quality observation, while motion-free sections receive fast-forward reproduction to reduce total time.
Solution Approach 2:
The video is segmented into motion-containing sections and motion-free sections based on detection results. Each segment is reproduced at an appropriate speed, allowing quality observation where needed and time efficiency where not needed.
4Loss of time
If automatic speed adjustment based on motion detection is implemented, then content check time is reduced, but system complexity increases
Solution Approach 1:
The motion detection function serves multiple purposes: it not only detects intruders but also controls reproduction speed. This multi-functionality reduces the need for separate control mechanisms, managing system complexity while achieving automatic speed adjustment.
Solution Approach 2:
The reproduction control function is merged with the motion detection function. The system combines these two functions into an integrated control mechanism, where motion detection results directly drive reproduction speed decisions, simplifying the overall system architecture.
Data Source
AI summary
There is provided a monitoring camera system including at least one monitoring camera and a recorder connected to the monitoring camera. The monitoring camera captures an image of an area of a monitoring target, detects a motion in a captured video of the area, associates information relating to the motion with the captured video, and transmits the associated result to the recorder. The recorder associates the captured video of the area captured by the monitoring camera and the information relating to the motion with the monitoring camera, and records the associated result. The recorder reproduces the captured video of the area on a monitor recorded in the way that a reproduction speed of the captured video in a section in which the motion is not detected on the monitor is faster than a reproduction speed of the captured video in a section in which the motion is detected, based on the information relating to the motion.