Vehicle Side Camera Failover With Surround View Image Correction
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Solution Overview
Problem
Conventional side cameras for vehicles fail to secure a rear side field of view when disabled, posing a risk of accidents due to blind spots.
Innovation Solution
A side camera system with a blind-spot view camera and surround view camera, accompanied by a controller, performs image transformation and correction using a look-up table to ensure rear side visibility through alternative display devices when either component fails.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a blind-spot view camera replaces the side mirror to widen the angle of view, then the blind spot is reduced and rear side visibility is improved, but when the camera fails, the rear side field of view cannot be secured which may cause fatal accidents
Solution Approach 1:
The patent applies beforehand cushioning by pre-configuring an emergency system that includes a surround view camera and alternative display devices. When the primary blind-spot view camera fails, the system automatically switches to this pre-prepared backup system, ensuring continuous rear side visibility without leaving the vehicle vulnerable to accidents.
Solution Approach 2:
The patent uses an intermediary approach by introducing a controller that mediates between the primary camera system and the emergency backup system. The controller detects camera failures and orchestrates the switch to alternative display devices, ensuring seamless transition and maintaining rear side field of view availability throughout the process.
2Device complexity
If the blind-spot view camera is disabled to reduce complexity, then the system is simpler, but the rear side field of view is lost creating blind spots
Solution Approach 1:
The patent applies universality by designing the emergency system to serve multiple functions. The surround view camera and alternative display devices can operate both as backup when the primary camera fails and as alternative viewing options under normal conditions, maximizing system utility while maintaining safety.
Solution Approach 2:
The patent uses parameter changes by dynamically switching between different display devices based on system state. When the blind-spot view monitor is malfunctioning, the system changes the display parameter by routing images to alternative display devices, ensuring continuous visibility without requiring permanent complex hardware configurations.
3Measurement precision
If image transformation and correction processes are implemented to correct distorted images from the surround view camera, then image quality is improved, but processing time and computational complexity increase
Solution Approach 1:
The patent applies preliminary action by pre-calculating and storing correction parameters for the surround view camera's distortion characteristics. When image correction is needed, the system retrieves pre-computed lookup tables and applies them directly, avoiding time-consuming real-time calculations while maintaining high correction accuracy.
Data Source
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AI summary
A side camera for a vehicle comprises: a main body (10) disposed at a left-hand and/or a right-hand side of the vehicle; a blind-spot view camera (20) of which at least a portion is accommodated in the main body (10) and being configured to photograph a view in lateral and rearward directions; a surround view camera SVC (30) of which at least a portion is accommodated in the main body (10) and being configured to photograph a view in a lateral direction; and a blind-spot view monitor (40) disposed inside the vehicle to transmit an image captured by the blind-spot view camera (20). When the blind-spot view camera (20) fails, an image transformation process is performed based on an image captured by the SVC (30) and transmitted to the blind-spot view monitor (40). When the blind-spot view monitor (40) fails, an image captured by the blind-spot view camera (20) is transmitted to another display device in the vehicle.