Virtual Projection Display for Vehicle Blind Spot Visibility
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Solution Overview
Problem
The line of sight of drivers and pedestrians is often obscured by vehicle structures or external objects, leading to blind spots and safety concerns.
Innovation Solution
A virtual projection method and display system using cameras and display devices to capture and project images of obscured objects, calibrating and stitching them with the unobstructed field of view to form a complete image.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a blocking body (A-pillar, C-pillar, or external structure) is used to support or strengthen the vehicle structure, then the structural strength and stability are improved, but the line of sight of the driver is obscured creating blind spots
Solution Approach 1:
The patent uses cameras to capture images of areas obscured by blocking bodies and displays these images on display devices positioned on the blocking bodies. This creates a visual copy of the obscured area, allowing drivers to see around corners and blind spots while maintaining the structural blocking body in place
Solution Approach 2:
The patent introduces an intermediary system consisting of cameras, computation circuits, and display devices that mediate between the driver's line of sight and the obscured areas. The cameras capture light from obscured regions and the display devices present this information to the driver, effectively bridging the gap created by the blocking body
2Loss of information
If the display device is disposed on the second side of the blocking body to provide visibility, then the line of sight obstruction is reduced, but the device complexity increases
Solution Approach 1:
The blocking body serves multiple functions: it maintains vehicle structural integrity while also supporting the display device that provides visibility of obscured areas. This multi-functionality reduces the need for additional separate components and simplifies the overall system architecture
Solution Approach 2:
The patent merges the camera, computation circuit, and display device into an integrated system that works together as a unified unit. The display device is specifically positioned on the second side of the blocking body to directly address the obstruction problem, combining multiple functions into a coordinated system
3Measurement precision
If the motion image is calibrated according to curvature and display panel specifications, then the image accuracy and visibility are improved, but the processing time and computational requirements increase
Solution Approach 1:
The system performs preliminary calibration of the display device according to the specific curvature and dimensions of the blocking body. By pre-configuring the calibration parameters based on the known geometry of the blocking body and display panel, the system avoids real-time computational complexity while maintaining high image accuracy
Solution Approach 2:
The patent adjusts image parameters such as curvature compensation and distortion correction based on the specific geometric parameters of the blocking body and display panel. By changing these parameters according to pre-measured characteristics, the system achieves high calibration accuracy without requiring complex real-time processing
Data Source
AI summary
A virtual projection method and a display system for displaying an image of an obscured object. The display system includes a computation circuit, a camera, and a display device. Based on a field of view of a person, the camera captures a motion image outside of a first side of a blocking body. The display device is disposed on a second side of the blocking body for displaying continuous virtual projection images generated from processing the motion image. Each frame of the motion image is calibrated according to a curvature of the blocking body and a size and a shape of a display panel of the display device. Each frame along a planar axis is calibrated into a virtual projection image matching the size, shape, and curvature. The virtual projection image is joined with an unobstructed field of view to form a complete stitched image in real time.