Wide-Angle Camera Navigation Image Distortion Correction
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Solution Overview
Problem
Current navigation systems using black box cameras with wide angle lenses face inefficiencies in guiding drivers due to differences between the camera's view angle and human perception, leading to unclear recognition of turn points.
Innovation Solution
A navigation guide apparatus and method that includes an image acquiring unit for collecting external images from a wide angle lens camera, an image processing unit for compensating and extracting a guide image, and an image display unit for displaying the guide image on a navigation map, ensuring the image aligns with the driver's view and provides real-time, distortion-corrected visuals of turn points.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a wide angle lens camera is used to capture external images, then the view angle is broad and high resolution is achieved, but the image distortion and angle difference from human perception increase
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting the extraction angle range based on the vehicle's driving state. When the vehicle is stationary or moving slowly, a larger angle range is used to provide comprehensive surrounding information. When the vehicle is moving quickly, a narrower angle range focused on the driving direction is used to reduce distortion and improve angle accuracy, thus resolving the contradiction between broad view angle and angle precision.
Solution Approach 2:
The patent segments the wide-angle image into multiple regions with different processing characteristics. The central region aligned with the driving direction is processed with minimal distortion correction, while peripheral regions apply progressive distortion correction. This segmentation allows different parts of the image to serve different functions, maintaining both broad coverage and accurate angle representation where needed.
2Device complexity
If only the extracted turn point is displayed, then the navigation guide is simplified, but the driver cannot recognize the angle difference and sense of difference is generated
Solution Approach 1:
The patent applies local quality by displaying different types of information in different regions of the screen. The turn point information is displayed in the central region with high clarity and accurate angle representation, while additional contextual information such as surrounding landmarks and distorted peripheral views are displayed in peripheral regions. This allows the driver to quickly identify the turn point while maintaining spatial awareness, improving recognition without excessive complexity.
3Device complexity
If the camera view angle is used directly for navigation guide, then the system is simple, but the guide efficiency is reduced due to angle difference from human eyes
Solution Approach 1:
The patent applies preliminary action by pre-calculating and storing distortion correction parameters and angle conversion tables during system initialization or calibration. These pre-computed data structures are then quickly applied during real-time navigation without requiring complex calculations, thus maintaining simple system architecture while achieving high guide efficiency through pre-prepared correction algorithms.
Data Source
AI summary
The present invention relates to an apparatus for increasing navigation guidance efficiency using a camera image, and to a method for same. The navigation guidance apparatus includes an image obtaining unit that collects external images which are images in the moving direction of a vehicle and captured through a wide-angle lens camera; an image processing unit that processes the collected external images and obtains guidance images related to the guidance points; and an image displaying unit that displays the obtained guidance images on a navigation map.