Vehicle Multi-Camera Frame Synchronization After Initial Video Feed
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Solution Overview
Problem
Modern vehicles equipped with multiple cameras experience synchronization issues and delays in image data merging, leading to undesired effects like blackouts in the displayed image due to lack of synchronization among cameras.
Innovation Solution
A method and system for synchronizing image data from multiple cameras in a vehicle, involving activation of initial video feeds, determining configuration parameters, and performing frame synchronization based on trigger events such as vehicle speed or transmission range, using parameters like x, y values, horizontal, and vertical blanking values, and resetting parameters when pixel counts exceed thresholds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If frame synchronization is performed continuously from initial video feed, then image data synchronization is improved, but system complexity and processing overhead increase
Solution Approach 1:
The system performs configuration parameter determination during an initial video feed phase before actual operation. This preliminary action establishes baseline parameters (x, y values, horizontal and vertical blanking values) that are stored and reused during normal operation, eliminating the need for continuous synchronization processing while maintaining reliability.
Solution Approach 2:
Frame synchronization is triggered periodically based on specific events (vehicle speed threshold, transmission range) rather than continuously. The processor activates initial video feed, determines configuration parameters, then waits for trigger events before performing frame synchronization again, reducing processing overhead while maintaining synchronization when needed.
2Measurement precision
If configuration parameters are determined for each frame, then synchronization precision is improved, but processing time and energy consumption increase
Solution Approach 1:
Configuration parameters including x, y values and blanking values are determined during the initial video feed phase before normal operation. These pre-determined parameters are stored and applied during frame synchronization triggered by events, eliminating the need for repeated parameter determination and reducing processing time while maintaining precision.
Solution Approach 2:
The system changes from continuously determining configuration parameters to using pre-determined parameters with periodic updates based on trigger events. This parameter change strategy maintains synchronization precision when needed while significantly reducing processing time and energy consumption during normal operation.
3Productivity
If frame synchronization is delayed until trigger events, then processing efficiency is improved, but synchronization reliability during critical moments may deteriorate
Solution Approach 1:
The system uses event-triggered periodic synchronization based on meaningful triggers (vehicle speed exceeding threshold, transmission in reverse). These triggers represent critical moments when synchronization is most needed, ensuring reliability during important operations while maintaining processing efficiency during normal conditions.
Solution Approach 2:
The system incorporates feedback mechanisms by monitoring vehicle speed and transmission state to determine when frame synchronization should be triggered. This feedback ensures synchronization occurs at appropriate moments when it is most critical for safety and operational reliability, balancing efficiency and reliability.
Data Source
AI summary
Methods and systems are provided for generating image data from a vehicle having a plurality of cameras. A method includes: activating, by the processor, initial video feed from each of the plurality of cameras; determining, by the processor, configuration parameters for each of the plurality of cameras based on the initial video feed; in response to a trigger event, performing frame synchronization of subsequent video feed from each of the plurality of cameras based on the configuration parameters; and generating, by the processor, the image data based on the frame synchronization.