Adaptive Projection Surface for Off-Road Image Synthesis
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Solution Overview
Problem
Conventional vehicle image display systems using flat projection surfaces distort images of rocks and stones when driving on off-roads, leading to a sense of incongruity for the driver due to the flattening of these features.
Innovation Solution
An image forming device that determines the traveling environment and adjusts the projection surface shape from a flat to a curved surface when driving off-road, using a virtual projection surface to form a synthetic image, reducing distortion and enhancing realism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a flat projection surface is used for image synthesis, then the image processing is simple and straightforward, but the images of rocks and stones are distorted when driving on off-roads, creating a sense of incongruity
Solution Approach 1:
The projection surface is changed from a static flat surface to a dynamic curved surface that adapts based on the detected traveling environment. When off-road conditions are detected, the system switches to a curved projection surface that matches the terrain, thereby resolving the distortion of rocks and stones while maintaining simple processing logic through conditional switching
Solution Approach 2:
The system changes the geometric parameters of the projection surface based on the traveling environment. By detecting whether the vehicle is on-road or off-road, the system adjusts the projection surface curvature parameter accordingly, transforming the flat surface parameter to a curved surface parameter to eliminate image distortion of terrain features
2Device complexity
If the projection surface shape is fixed, then the device complexity is low, but the adaptability to different traveling environments (on-road and off-road) is poor
Solution Approach 1:
The projection surface configuration transitions from a fixed static state to a dynamic adaptive state. The system incorporates environmental detection and conditional logic to switch between flat and curved projection surfaces, enabling adaptation to different traveling environments without significantly increasing device complexity through the use of pre-defined surface models
Solution Approach 2:
The image synthesis system is designed to perform multiple functions by supporting both flat and curved projection surfaces. This multi-functionality allows the same device to handle both on-road and off-road conditions effectively, improving adaptability while maintaining a unified system architecture that manages both projection surface types
Data Source
AI summary
An image acquisition unit acquires camera images obtained by cameras, which are configured to photograph a periphery of the vehicle. An image synthesizing unit projects data of the camera images on a virtual projection surface, which corresponds to the periphery of the vehicle, and forms a synthetic image showing the periphery of the vehicle, which is viewed from a virtual view point, by using the data projected on the projection surface. A travelling-environment determination unit determines whether a travelling environment of the vehicle is an off-road or an on-road based on a signal from an other on-board device of the vehicle. The image synthesizing unit is configured to change a shape of the projection surface, which is for forming the synthetic image, according to whether the travelling-environment determination unit determines that the travelling environment is an off-road.