Vehicle Display Control Device Projection Position Correction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional image processing devices for vehicle surround view systems require complex calculations to correct for unnatural displays, leading to increased costs and processing loads, and often result in issues like objects appearing too small or road widths becoming suddenly narrow.
Innovation Solution
A display control device with an image acquisition unit, projection plane acquisition unit, and correction unit that projects images onto a three-dimensional virtual projection plane, correcting the projection position based on coordinates and distances to reduce unnaturalness, allowing for easier recognition of object positions relative to the vehicle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If distance calculation and projection plane correction are performed according to conventional techniques, then unnaturalness in displaying is reduced, but calculation process becomes complicated and processing load increases
Solution Approach 1:
The patent extracts the essential correction function from complex distance-based calculations to a simpler projection position correction mechanism. By using a predetermined correction amount based on image capture unit position rather than calculating actual distances to objects, the system maintains display accuracy while significantly reducing computational complexity and processing load.
Solution Approach 2:
The patent changes the correction parameter from distance-based calculations to position-based predetermined correction amounts. Instead of calculating distances to objects and adjusting projection planes dynamically, the system uses fixed correction values determined by the geometric relationship between image capture units and the virtual projection plane, simplifying the correction process while maintaining effectiveness.
2Manufacturing precision
If distance calculation and projection plane correction are performed according to conventional techniques, then unnaturalness in displaying is reduced, but processing device cost increases
Solution Approach 1:
The patent extracts the correction function from expensive distance calculation hardware to a simpler system using predetermined correction amounts. By relying on the known geometric positions of image capture units rather than complex distance measurement and calculation hardware, the system reduces processing device cost while maintaining display accuracy.
Solution Approach 2:
The patent replaces expensive, complex distance calculation and projection plane correction mechanisms with simpler, predetermined correction values. These correction values can be pre-computed and stored, replacing the need for costly real-time distance calculation hardware and reducing overall system cost while maintaining correction effectiveness.
3Manufacturing precision
If conventional correction techniques are used, then some unnaturalness is reduced, but unresolvable problems remain such as objects appearing unnaturally small or road width becoming suddenly narrow
Solution Approach 1:
The patent applies local quality correction by using predetermined correction amounts specific to each image capture unit's position and orientation. Instead of uniform or distance-based correction, each captured image is corrected according to its specific geometric relationship with the virtual projection plane, ensuring consistent and natural display across different regions and eliminating artifacts like sudden road width changes.
Solution Approach 2:
The patent transitions from two-dimensional image correction to three-dimensional projection position correction. By considering the spatial coordinates (x, y, z) and correcting projection positions in three-dimensional space rather than just adjusting two-dimensional projection planes, the system achieves more accurate and consistent naturalness across the entire displayed scene, resolving issues like objects appearing unnaturally small.
Data Source
Figure 1~2
Figure 3
Figure 4
AI summary
A display control device includes: an image acquisition unit that is provided to a vehicle and acquires a display target image that is at least one of a front image acquired from a front image capture unit that captures a region including a front of the vehicle and a rear image acquired from a rear image capture unit that captures a region including a rear of the vehicle; a projection plane acquisition unit that acquires a three-dimensional virtual projection plane to which the display target image is projectable, the three-dimensional virtual projection plane including at least a side surface that rises in a height direction from a ground contact surface of the vehicle; a correction unit that, in a case where the display target image acquired by the image acquisition unit is projected on the virtual projection plane, corrects a projection position of the display target image to a second direction, which is from a first coordinate corresponding to a position where the virtual projection plane intersects with a first virtual straight line extending in a first direction corresponding to a vehicle length direction of the vehicle from the front image capture unit or the rear image capture unit that captures the display target image to a second coordinate corresponding to a position where the virtual projection plane intersects with a virtual reference line extending in the first direction that is apart from the first virtual straight line in a vehicle width direction of the vehicle; and an image synthesis unit that projects the display target image on a corrected projection position, and generates a three-dimensional image.