Multi-Pane Vehicular Display Dewarping
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Solution Overview
Problem
Vehicle vision systems struggle to provide video images that are quickly and reliably comprehensible to drivers, particularly due to the distortion caused by wide-angle lenses, which can obscure hazards and make it difficult for drivers to assess their surroundings effectively.
Innovation Solution
A vehicle vision system performs dewarping on captured images and outputs them in a three-pane configuration, with side panes shaped and arranged to appear folded relative to a central pane, enhancing driver comprehension by clearly separating and contrasting the central and side image areas, and optionally incorporating overlays to aid in judging distances and speeds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If wide-angle lenses are used to capture a broader field of view, then the coverage area is improved, but the image distortion increases making it difficult for drivers to assess distances and speeds accurately
Solution Approach 1:
The display is divided into three separate panes (central and two side panes), each showing a different portion of the captured image. This segmentation allows the central pane to maintain a rectilinear perspective for accurate distance assessment, while the side panes can utilize the wide-angle view for broader coverage without compromising the accuracy needed for hazard assessment.
Solution Approach 2:
The patent transitions from a single two-dimensional distorted view to a multi-pane display arrangement that effectively creates additional visual dimensions. By separating the image into multiple panes with different geometric transformations, the system preserves both the wide coverage and the accurate distance perception in different spatial arrangements on the display.
2Measurement precision
If dewarped images are processed to correct lens distortion, then the image accuracy is improved, but the processing complexity increases
Solution Approach 1:
The image processing is segmented into different operations applied to different portions of the image. The central pane receives rectilinear dewarping for accurate geometry, while the side panes receive different transformations. This segmentation allows the system to manage processing complexity by applying appropriate algorithms to specific regions rather than uniformly processing the entire image.
Solution Approach 2:
Different geometric transformations are applied to different regions of the image based on their specific requirements. The central region undergoes rectilinear dewarping for accurate measurement, while side regions may use different transformations optimized for their specific viewing purposes, allowing each region to have the quality needed for its function.
3Ease of operation
If the display shows multiple image panes with different shapes and orientations, then the information comprehensibility is improved, but the display design complexity increases
Solution Approach 1:
The display is segmented into three distinct panes with specific geometric relationships (central rectangular pane and two side parallelogram panes). This segmentation allows each pane to be optimized for its specific purpose while maintaining an overall coherent layout that is comprehensible to drivers, balancing information clarity with manageable design complexity.
Solution Approach 2:
The display uses asymmetric geometric arrangements where the side panes are parallelograms with edges that are non-parallel to the central pane's edges. This asymmetric design allows the side panes to be visually distinguished and understood as folded relative to the central pane, improving comprehensibility while the systematic geometric rules keep the design complexity manageable.
Data Source
AI summary
A vehicular display system includes a rearward viewing camera disposed at a vehicle and a controller that includes a processor for processing image data captured by the rearward viewing camera. A display device is disposed in the vehicle for viewing by a driver of the vehicle. Image data captured by the rearward viewing camera is processed at the controller, which generates an output representative of an image having three image panes including a central image pane derived from a central subset of captured image data and two side image panes derived from respective side subsets of captured image data. Each of the side image panes are shaped and arranged with respect to the central image pane to have non-parallel upper edges and non-parallel lower edges. The display device, responsive to the output generated by the processing system, displays the image for viewing by the driver of the vehicle.