Multi-Camera Vehicle Video Synchronization Using Timing Indicators
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing vehicle video record systems face issues with temporal synchronization of videos captured by multiple cameras, leading to confusion during accident analysis due to video processing delays and communication state delays, resulting in inconsistent recordings.
Innovation Solution
A vehicle video record system with a controller that inserts synchronization indicators, synchronizes videos based on these indicators, adjusts delayed frames, and detects camera failures by monitoring frame delays, ensuring synchronized recordings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If videos from multiple cameras are recorded without synchronization indicators, then the recording process is simple, but temporal synchronization between videos deteriorates
Solution Approach 1:
A synchronization indicator is introduced as an intermediary element between the camera recording system and the video processing system. This indicator serves as a mediator that carries timing information through the video data stream, enabling temporal synchronization without fundamentally altering the simple recording process. The synchronization indicator acts as a bridge that connects the independent camera recordings to a common time reference.
Solution Approach 2:
The synchronization indicator is inserted into the video data in advance during the recording process, before any video processing or analysis occurs. This preliminary action ensures that timing information is embedded in the原始 video data, allowing for subsequent synchronization operations to be performed accurately without adding complexity to the core recording function.
2Measurement precision
If synchronization indicators are inserted into videos, then temporal synchronization accuracy is improved, but device complexity increases
Solution Approach 1:
The synchronization indicator serves as a lightweight intermediary that adds minimal complexity to the system. Rather than implementing complex synchronization hardware or protocols, the patent uses a simple data marker embedded in the video stream that can be processed through standard video processing pipelines, thus improving synchronization accuracy while maintaining relatively simple system architecture.
Solution Approach 2:
The synchronization indicator is implemented as a data copy or marker within the existing video data structure, rather than requiring separate synchronization hardware or complex additional systems. This approach allows the synchronization function to be added to the existing video recording system with minimal increase in overall system complexity.
3Stability of the object's composition
If video frames are adjusted to synchronize delayed videos, then temporal consistency is improved, but processing time increases
Solution Approach 1:
The synchronization indicator is prepared and inserted in advance during the recording phase, which allows the actual video synchronization to be performed more efficiently during processing. By having the timing information pre-encoded in the video data, the processing system can quickly identify and correct delays without performing complex real-time analysis, thus reducing the time loss during video processing.
4Area of stationary object
If multiple cameras are used to capture videos, then coverage area is improved, but synchronization difficulty increases
Solution Approach 1:
The synchronization indicator acts as a common intermediary that all multiple cameras use to reference their timing information. Each camera independently inserts its own synchronization indicator into its video stream based on its local timing, but these indicators all reference the same time standard. This mediator approach allows multiple cameras to maintain independent operation while achieving synchronized recording, thus expanding coverage area without proportionally increasing synchronization difficulty.
Data Source
AI summary
A video record system for a vehicle includes a plurality of cameras which respectively film videos around the vehicle; a first memory which stores videos received from the cameras; and a controller which includes a second memory for storing a computer program to access the videos stored in the first memory, and a processor for executing the computer program, where each of the cameras includes a synchronization indicator in a corresponding video according to a synchronization signal received from the controller, and the controller checks a synchronization state of the videos received from the cameras by using the synchronization indicator.