Video Synchronization via Elapsed Time Offset Calculation
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Solution Overview
Problem
Existing video synchronization methods, such as using a clapperboard signal, are ineffective in scenes like concerts or recitals where providing a signal is difficult, leading to challenges in aligning videos from multiple cameras.
Innovation Solution
An information processing method where one imaging device acquires and compares elapsed recording times with another device to calculate an offset time, allowing for synchronization of moving images by adjusting their absolute times during editing, even when devices start recording at different times.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a clapperboard signal method is used for video synchronization, then video alignment can be achieved, but it cannot be applied in scenes where providing a signal is difficult (such as concerts or recitals)
Solution Approach 1:
The patent extracts the synchronization signal generation from an external device (clapperboard) and embeds it within the imaging devices themselves. Each imaging device generates its own timing signal internally, eliminating the need for external signal provision while maintaining synchronization capability.
Solution Approach 2:
The imaging devices perform self-synchronization by internally generating and comparing timing signals. The system uses the imaging devices' own internal clocks and timing mechanisms to determine offset times, making the system self-sufficient and adaptable to various recording scenarios without requiring external intervention.
2Measurement precision
If traditional synchronization methods are used, then video alignment is possible in controlled environments, but they fail in scenarios where signal provision is difficult
Solution Approach 1:
The patent creates a universal synchronization method that functions across diverse recording scenarios. The timing signal generation and offset calculation mechanism works equally well in controlled environments (studios) and uncontrolled environments (concerts, recitals), making the system multi-functional and broadly applicable.
Solution Approach 2:
The system adapts to different recording scenarios by dynamically determining offset times based on actual timing signal comparisons. Rather than relying on fixed synchronization parameters, the system measures and adjusts timing offsets in real-time, allowing accurate synchronization across varying environmental conditions and recording situations.
Data Source
AI summary
In a video system for imaging a target object by using first and second imaging devices, an information processing method is executed by the first imaging device. The information processing method includes: a step for acquiring a first elapsed time indicating the time elapsed after start of recording by the first imaging device; a step for requesting the second imaging device to transmit a second elapsed time indicating the time elapsed after start of recording by the second imaging device, and receiving the second elapsed time; a step for acquiring a required time to receive the second elapsed time after the request is made; and a step for, based on the first elapsed time, the second elapsed time, and the required time, calculating an offset time for synchronizing a first moving image recorded by the first imaging device and a second moving image recorded by the second imaging device.