Fast Fisheye Image Correction Method for Panoramic Parking Assist System

A fisheye image and parking assist technology, which is applied in image enhancement, image data processing, vehicle components, etc., can solve the problem of not being able to see the surrounding conditions of the vehicle at the same time, and achieve less obvious edge distortion, less computation, and avoid manual labor. The effect of participation

Inactive Publication Date: 2011-12-28
HUAIAN YINGKE WEILI TECH
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Problems solved by technology

[0005] The visual reversing radar based on a single rearview camera can only see the rear of the car body, but cannot see the surrounding conditions of the car body at the same time, and

Method used

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  • Fast Fisheye Image Correction Method for Panoramic Parking Assist System
  • Fast Fisheye Image Correction Method for Panoramic Parking Assist System
  • Fast Fisheye Image Correction Method for Panoramic Parking Assist System

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Embodiment Construction

[0025] The accompanying drawings disclose non-restrictive schematic diagrams of the embodiments involved in the present invention; the technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0026] Such as Figures 1 to 6 As shown, the design process of the fisheye image quick correction method of the panoramic parking assistance system of the present invention is: 1. Automatically find the checkerboard corner points of the calibration board

[0027] The calibration method needs to use the tool of black and white checkerboard, such as figure 1 As shown, its purpose is to detect the corner points in the black and white checkerboard for calibration. The accuracy of black and white checkerboard corner detection will have a great impact on the accuracy of calibration results. After fisheye imaging, the checkerboard is distorted, such as figure 2 shown. The Harris operator is simple in calculation and stab...

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Abstract

The invention discloses a method for quickly correcting a fisheye image of a panoramic parking assistance system, which comprises the following steps: (1) constructing a black and white checkerboard using an adaptive Harris algorithm; (2) constructing a fisheye using the constraints of spherical perspective projection The mapping relationship between the image point and the spherical correction image point; (3) expand the spherical correction image point into a plane latitude and longitude image point according to the latitude and longitude expression; (4) store the fisheye image point and its corresponding plane latitude and longitude image point (5) According to the mapping table, the bilinear interpolation algorithm is used to correct the fisheye image points in real time. Therefore, the present invention has the characteristics of automatic calibration for the first time, can quickly correct fisheye distortion after calibration, has good versatility, avoids cumbersome steps and manual intervention, and is suitable for use in products. At the same time, it has the characteristics of fast correction speed and meets real-time requirements.

Description

technical field [0001] The invention relates to a fast correction method for fisheye lens distortion, belonging to the field of vehicle engineering applications. Background technique [0002] With the rapid development of my country's economy and the continuous increase of transportation vehicles, the resulting traffic problems have become more and more people's concerns. The number of traffic deaths in my country is about 100,000 every year, accounting for one-fifth of the world's total. In these traffic accidents, the frequency of reversing accidents is the most. There are many reasons for reversing accidents. There are dead angles in the reversing mirror, errors in the driver's visual distance, and blurred vision. The accident rate when reversing is much higher than that when the car is moving forward, especially for non-professional drivers and women. more prominent. [0003] At present, the technology of the car reversing radar system has been upgraded and its perfor...

Claims

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Application Information

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IPC IPC(8): G06T5/00B60R1/10
Inventor 徐诚陈日清夏宇
Owner HUAIAN YINGKE WEILI TECH
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