Vehicle Camera Display System with Contact Position Sensors
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Solution Overview
Problem
Existing display systems for vehicles struggle to accurately display images around the vehicle due to shifts in camera position and orientation after installation, requiring a special environment for calibration and resulting in mismatched display regions.
Innovation Solution
A display system with a shooting element, controller, and display device that includes a camera, contact position sensors, and a processor to modify retrieved region information based on changes in camera position and orientation, ensuring accurate display without the need for a special environment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the camera position and orientation are adjusted to predetermined values during manufacturing, then the retrieved region information can be preliminarily set, but the actual display region shifts from the proper region when camera position or orientation changes after vehicle shipment
Solution Approach 1:
The system performs preliminary setting of retrieved region information during manufacturing when the camera is adjusted to predetermined position and orientation. This preliminary configuration is stored and later corrected using contact position data when the vehicle is actually used, allowing the system to prepare in advance while accommodating subsequent adjustments.
Solution Approach 2:
The system uses contact position sensors to detect the actual position and orientation of the camera bracket relative to the vehicle. This feedback information is used to calculate correction amounts and modify the retrieved region information, creating a closed-loop system that automatically compensates for installation variations and maintains display accuracy.
2Measurement precision
If the vehicle is placed in a special environment with markers to calculate and correct the coordinate system mismatch, then the display region accuracy is improved, but the complexity of the calibration process increases and requires special equipment
Solution Approach 1:
The system uses contact position sensors integrated into the vehicle's existing structure to detect camera bracket position and orientation. The correction is performed automatically by the image processing device using algorithms that calculate the coordinate transformation based on contact positions, eliminating the need for external calibration equipment or special environments.
Solution Approach 2:
The system replaces the mechanical calibration process using physical markers and special environments with an electronic/computational approach. Contact position sensors provide digital data that is processed through coordinate transformation algorithms, substituting complex physical calibration procedures with simpler electronic measurement and calculation.
3Reliability
If the retrieved region information is modified based on contact position changes, then the display region accuracy is maintained after camera repositioning, but the system complexity increases due to additional sensors and processing
Solution Approach 1:
The contact position sensors serve multiple functions: they detect the position and orientation of the camera bracket, provide data for calculating correction amounts, and enable automatic adaptation to installation variations. This multi-functionality reduces the need for separate calibration mechanisms and simplifies the overall system architecture.
Solution Approach 2:
The system dynamically modifies the retrieved region information parameters based on detected contact position changes. By changing the coordinate transformation parameters and region definition data in response to sensor input, the system maintains display accuracy without requiring physical repositioning or complex mechanical adjustments.
Data Source
AI summary
An display system of an image around a vehicle includes: a shooting element; a controller including a processor and a memory; and a display device. The shooting element includes a bracket fixed to the vehicle, a camera in the bracket, a protrusion of the camera and a contact position sensor of the protrusion. The memory stores retrieved region information about a retrieved region defined by a display coordinate system and retrieved from the image. The display device displays the retrieved region. When the contact position of the protrusion is changed, the processor modifies the retrieved region information based on the contact positions before changing and after changing such that a region defined by a local coordinate system corresponding to the retrieved region after changing is equal to the region defined by the local coordinate system before changing.