Vehicle Vision Overlay Mapping for Zoom and Capture Area Changes
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Solution Overview
Problem
Existing digital vision systems for vehicles struggle to correctly display fixed information relative to the vehicle, such as distance lines, without obscuring legally required fields of view, especially when the image zoom or capture area changes.
Innovation Solution
Assigning a coordinate system to both the image sensor and additional information, ensuring a fixed relationship in scaling, origin, and orientation, allowing for accurate superimposition of information on the image display unit, even with changes in the displayed image detail or zoom.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If additional information is superimposed at a fixed position on the image display unit, then the additional information is always visible at the same location, but the information is incorrectly positioned relative to the vehicle when image zoom or capture area changes
Solution Approach 1:
The patent applies the dynamics principle by making the additional information dynamically adaptable to changes in image zoom and capture area. Instead of using a fixed position approach, the system automatically adjusts the position and scaling of additional information based on the current display parameters. This is achieved through coordinate transformation that maps additional information from a vehicle-fixed reference system to the dynamic image display coordinate system, ensuring correct positioning regardless of zoom or capture area changes.
Solution Approach 2:
The patent employs parameter changes by modifying the display parameters of additional information based on the current image state. When zoom or capture area parameters change, the system recalculates and adjusts the position, size, and orientation parameters of the superimposed additional information accordingly. This ensures that distance lines and other vehicle-relative information maintain their correct spatial relationship to the vehicle throughout the entire displayed image area.
2Adaptability or versatility
If the image capture position or magnification changes, then the displayed image section changes, but the additional information is hidden or incorrectly positioned
Solution Approach 1:
The system dynamically adjusts the visibility and positioning of additional information based on the current image capture position and magnification. When the image section changes due to zoom or capture area adjustment, the additional information is automatically repositioned and rescaled to remain visible and correctly positioned within the new display boundaries, preventing information loss.
Solution Approach 2:
The patent implements a feedback mechanism where the system continuously monitors changes in image capture position and magnification, and automatically adjusts the additional information display parameters in response. This closed-loop approach ensures that additional information remains visible and correctly positioned regardless of image section changes, adapting in real-time to maintain information availability.
3Loss of information
If distance lines are displayed as additional information, then fixed information relative to the vehicle is provided, but the information may obscure legally required fields of vision
Solution Approach 1:
The patent applies local quality by allowing different regions of the display to have different properties. The additional information such as distance lines is selectively positioned and scaled based on its relevance to specific areas of the image. This ensures that information is displayed with appropriate prominence in relevant zones while maintaining visibility of legally required fields of vision in other areas, creating a spatially differentiated display quality.
Data Source
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AI summary
A method for overlaying and displaying additional information on image data shown on an image display unit of a digital vision system for a vehicle, wherein the vision system includes an image acquisition unit with an image sensor, an image processing unit, and an image display unit with an image display area, and wherein the image sensor is associated with a sensor coordinate system having a sensor coordinate system origin and a sensor coordinate system scale, and the additional information is associated with an additional information coordinate system having an additional information coordinate system origin and an additional information coordinate system scale, includes the steps of extracting image data from a sensor extraction area of the image sensor.The process involves superimposing additional information onto the extracted image data in the image processing unit and displaying the image data with the superimposed additional information on the image display area of the image reproduction unit, wherein the position of the sensor sampling area in the sensor coordinate system is movable and/or the size of the sensor sampling area is variable. The additional information is superimposed onto the extracted image data in such a way that, regardless of any displacement of the position of the sensor sampling area and/or a change in the size of the sensor sampling area, the origin of the additional coordinate system is assigned to a fixed point in the sensor coordinate system, the orientation of the additional information coordinate system relative to the sensor coordinate system is fixed, and the ratio of the scaling of the additional information coordinate system to the scaling of the sensor coordinate system is in a fixed ratio m:1.