On-Vehicle AVM 3D View Rendering Without Recalculation Lag
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Solution Overview
Problem
Existing AVM 3D reversing image solutions experience poor user experiences such as stuttering and image tearing due to frequent recalculations of 3D images when changing view angles, and multiple image interpolations degrade image quality.
Innovation Solution
A display method and system using multiple on-vehicle lenses to construct a coordinate mapping table, generate a panoramic image, and map it to a preset world model, allowing for real-time rendering and output of images under any view angle without recalculating the entire image.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If 3D images are recalculated for each view angle change, then the field of vision is expanded, but calculation speed becomes insufficient causing stuttering and image tearing
Solution Approach 1:
The patent pre-calculates and stores 3D coordinate mapping relationships for multiple view angles in advance. When a view angle change occurs, the system directly retrieves the pre-computed mapping data instead of recalculating, thereby maintaining expanded field of vision while eliminating calculation delays and image artifacts.
2Area of stationary object
If multiple image interpolations are performed to generate 3D images, then the field of vision is expanded, but image quality deteriorates
Solution Approach 1:
The patent uses pre-computed 3D coordinate mapping tables that directly map pixels from the panoramic image to the 3D view without requiring multiple interpolation operations. This copying approach preserves original image quality while achieving the expanded field of vision effect.
3Area of stationary object
If the panoramic image covers a larger range, then the field of vision is expanded, but the image processing complexity increases
Solution Approach 1:
The patent pre-computes and stores coordinate mapping tables for multiple view angles during an initialization phase. This preliminary action shifts the computational complexity from real-time operation to setup phase, allowing the system to handle large panoramic images with expanded field of vision while maintaining simple real-time processing.
Data Source
AI summary
A display method and a display system of an on-vehicle around view monitor (AVM), an electronic device, and a storage medium. The display method is performed based on on-vehicle lenses. The display method includes constructing a coordinate mapping table representing a coordinate mapping relationship between a panoramic image generated by splicing original images captured by the on-vehicle lenses and each original image captured by the on-vehicle lenses, generating the panoramic image based on the original images captured by the on-vehicle lenses and the coordinate mapping table, mapping the panoramic image to a preset world model to construct a virtual world inside the preset world model, disposing a vehicle model at a position corresponding to a real vehicle in the virtual world, and rendering and outputting an image, corresponding to a specified view point, in the virtual world. The view point is located on the preset world model and faces towards a center of the vehicle model. The end-to-end coordinate mapping table constructed with the method can avoid multiple image interpolations, and the construction of the virtual world facilitates the realization of a real-time preview.