Wide Angle Camera Obstacle Detection Without Distortion Correction
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Solution Overview
Problem
Existing image display systems using wide angle cameras capture distorted images, which require correction to detect obstacles accurately, posing challenges in preventing vehicle collisions and ensuring safe parking.
Innovation Solution
An image display device and method that captures images using wide angle cameras, detects obstacles without correcting the distortion, and generates warning information when the distance between the vehicle and obstacles is within a set threshold, displaying critical information to prevent collisions and facilitate safe parking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If distortion correction is applied to wide angle camera images, then measurement precision of obstacle distance is improved, but device complexity and processing time increase
Solution Approach 1:
The patent converts the harmful distortion effect of wide angle cameras into a beneficial feature by using the distorted image characteristics themselves for obstacle detection. Instead of correcting the distortion, the system leverages the known distortion pattern to identify obstacles and calculate distances directly from the distorted images, thereby eliminating the need for complex distortion correction processing while maintaining detection accuracy.
Solution Approach 2:
The patent inverts the conventional approach by not correcting the distorted images to obtain accurate measurements, but rather using the distorted images as-is for detection purposes. This inversion simplifies the processing pipeline while achieving the same or better obstacle detection performance by working directly with the captured distorted image data.
2Measurement precision
If distortion correction is applied to wide angle camera images, then obstacle detection accuracy is improved, but processing time increases
Solution Approach 1:
The patent converts the time-consuming distortion correction step into a beneficial shortcut by using the distorted images directly for obstacle detection. The system achieves rapid obstacle identification and distance calculation without the computational overhead of distortion correction, thereby reducing processing time while maintaining detection accuracy.
Solution Approach 2:
The patent skips the distortion correction step entirely, rushing directly from distorted image capture to obstacle detection. This elimination of an intermediate processing step significantly reduces the overall processing time while the system compensates by using detection algorithms optimized for distorted wide angle images.
3Area of stationary object
If multiple wide angle cameras are used to capture surrounding images, then coverage area is improved, but device complexity increases
Solution Approach 1:
The patent makes each wide angle camera multi-functional by using them not only for capturing surrounding images but also for direct obstacle detection and distance measurement. The same distorted images used for general surveillance are simultaneously utilized for precise obstacle identification, eliminating the need for separate detection hardware and reducing overall system complexity.
Solution Approach 2:
The patent merges the functions of multiple wide angle cameras into a unified obstacle detection system. By combining the distorted images from multiple cameras and processing them together using the distortion-aware detection algorithm, the system achieves comprehensive surrounding monitoring with obstacle detection capability without requiring separate dedicated detection devices.
Data Source
AI summary
Disclosed are an image display device and a method thereof capable of detecting a distance between an obstacle included in a distorted image captured by a wide angle camera and a vehicle to thus prevent an occurrence of an accident in which the vehicle collides with the obstacle so as to damaged, in advance. The image display device includes: a storage unit configured to store obstacle characteristic images previously captured from multiple viewpoints; an image capture unit configured to capture images of a surrounding area of a vehicle; a controller configured to detect an obstacle from the captured images on the basis of the images captured by the image capture unit and the obstacle characteristic images, and generate warning information when a distance value between the vehicle and the obstacle is equal to or smaller than a first pre-set distance value; and a display unit configured to display the generated warning information.