Surround View Projection Distortion Correction
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Solution Overview
Problem
Current methods for generating 3D surround views in driving assistant systems, such as parking assistants, suffer from image distortions when projecting scenery onto simulated 3D curved surfaces.
Innovation Solution
A method and system that establish a surround surface and project images based on a dynamic projection relationship between points on the surface and pixels in images, using a weighting factor that changes with the height of the points to correct distortions, particularly for the ground plane and objects near it.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If images are projected onto a predetermined shaped surround surface using conventional projection methods, then a 3D surround view can be generated, but image distortions occur particularly for the ground plane and nearby objects
Solution Approach 1:
The patent applies local quality by using different projection methods for different regions of the surround surface. Specifically, points above the ground plane use one projection relationship while points on or below the ground plane use another projection relationship. This regional differentiation allows each area to be projected with optimal accuracy for its specific characteristics, reducing overall distortion in the generated surround view
Solution Approach 2:
The patent changes projection parameters based on the height of points on the surround surface. By introducing a height threshold (ground plane level) and selecting different projection relationships based on whether points are above or below this threshold, the system dynamically adjusts projection behavior. This parameter change approach enables accurate handling of both elevated objects and ground-level features without uniform projection distortion
Data Source
AI summary
A method and system for generating a surround view are provided. The method may include: establishing a surround surface; obtaining a plurality of images of surroundings; and projecting the images onto the surround surface based on a projection relationship between points on the surround surface and pixels on the images to generate a surround view, where the projection relationship may change with heights of the points on the surround surface. An improved projection effect may be obtained.