Bird's-Eye View Imaging With Peripheral High-Resolution Optics
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Solution Overview
Problem
Existing systems for generating bird's-eye views from movable apparatuses, such as vehicles, suffer from deteriorated resolution when enlarging areas far from the camera or its peripheral regions.
Innovation Solution
Employing optical systems that form high-resolution areas in peripheral view angles and low-resolution areas near the optical axis, combined with image processing to deform and combine images from multiple cameras, ensuring high visibility and resolution in both central and peripheral views.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional optical systems are used to capture wide-angle views, then the angle of view is sufficient, but the resolution in peripheral and distant areas deteriorates when enlarged
Solution Approach 1:
The patent divides the imaging system into multiple optical systems, each responsible for capturing a specific angular range. The first optical system captures images in a first angle of view range, while the second optical system captures images in a second angle of view range. This segmentation allows each optical system to be optimized for its specific range, maintaining high resolution in peripheral areas when the image is enlarged.
Solution Approach 2:
Different optical systems are assigned to different angular ranges based on their resolution characteristics. The patent assigns the first optical system to capture images where the first imaging unit has higher resolution in its specific angular range, and the second optical system for its corresponding range. This local optimization ensures that each region of the bird's-eye view maintains appropriate resolution quality.
2Area of stationary object
If images from multiple optical systems are combined, then comprehensive coverage is achieved, but image deformation and alignment complexity increases
Solution Approach 1:
The patent performs preliminary coordinate transformation on image data from each optical system before combining them. The image processing unit transforms coordinates of the first image data and second image data according to respective transformation relationships, and combines them into bird's-eye view image data. This preliminary processing simplifies the final combination step and reduces overall processing complexity.
Solution Approach 2:
The patent introduces coordinate transformation as an intermediary process between capturing images from multiple optical systems and generating the final bird's-eye view. By transforming coordinates according to specific relationships, the system creates a common reference frame that facilitates seamless integration of images from different sources.
Data Source
AI summary
An image processing system, which can prevent a sense of resolution when an image obtained by capturing surroundings of a movable apparatus is displayed from deteriorating, includes a first optical system that forms a first optical image having a low-resolution area corresponding to an angle of view less than a first angle of view and a high-resolution area corresponding to an angle of view greater than or equal to the first angle of view, a first imaging unit that captures the first optical image formed by the first optical system to generate first image data, and an image processing unit that deforms the first image data to generate first deformed image data.