Mirror Replacement Display With Parallax Viewpoint Adjustment
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Solution Overview
Problem
Existing camera monitoring systems (CMS) in commercial vehicles provide flat two-dimensional views that do not adjust based on the operator's head position or gaze direction, lacking the parallax effect that conventional mirrors provide, which aids in depth perception.
Innovation Solution
A CMS that includes at least one camera and display, combined with a driver monitoring system (DMS) to detect the operator's head position, orientation, and gaze direction, and a controller that modifies the image by simulating parallax effects, adjusting object positions, sizes, and skew relative to the operator's viewpoint.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a conventional mirror is used to provide rear views, then the operator gains depth perception through parallax effect, but the field of view is limited compared to camera systems
Solution Approach 1:
The patent creates a digital copy of the mirror function using camera feeds processed to simulate parallax effects. The controller generates manipulated images that replicate the depth perception characteristics of conventional mirrors while using camera technology to capture a wider field of view.
Solution Approach 2:
The system changes the parameter of image perspective by applying parallax manipulation to the camera feeds. The controller adjusts the relative position, size, and orientation of objects in the displayed image based on simulated head position changes, transforming flat 2D camera images into views with depth perception characteristics.
2Area of stationary object
If a camera monitoring system provides flat two-dimensional views, then the field of view is enhanced beyond conventional mirrors, but the views do not adjust based on operator head position or gaze direction
Solution Approach 1:
The system introduces dynamic adaptation by continuously monitoring operator head position and gaze direction through interior cameras, then dynamically adjusting the parallax manipulation of the displayed images in real-time to match the operator's viewpoint changes.
Solution Approach 2:
The system implements feedback by using interior cameras to detect operator head position and using this information to control the parallax manipulation parameters of the displayed images, creating a closed-loop system that adapts to operator behavior.
3Loss of information
If parallax manipulation is applied to simulate depth perception, then depth perception is enhanced, but the system complexity increases due to additional processing requirements
Solution Approach 1:
The patent replaces complex mechanical mirror adjustment mechanisms with digital image processing. Instead of physically moving mirrors to create parallax effects, the system uses computational algorithms to manipulate the camera feeds and simulate the same visual effect.
Data Source
AI summary
A mirror replacement system for a commercial vehicle includes a camera monitoring system (CMS). The CMS comprises a camera (20a, 20b) and a display (18a, 18b) configured to display the image of the at least one camera to a vehicle operator. A driver monitoring system (DMS) includes at least one interior camera (22a, 22b) having a field of view including at least a portion of the vehicle operators head. The DMS is configured to identify at least one of a head position and orientation of the vehicle operator, a pose of the vehicle operator, and a gaze direction of the vehicle operator. A controller is configured to modify at least one of a relative position of objects in an image, a relative size of the objects in the image, and a relative skew of the objects in the image in response to identifying a rotation of the operator's viewpoint relative to the at least one display.