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Image Registration Method for Panoramic Assisted Parking System

A technology for assisting parking and image registration, applied in the field of image processing, can solve problems such as easy accidents and potential safety hazards, and achieve the effects of reducing search time, improving matching accuracy, and improving search efficiency.

Inactive Publication Date: 2011-12-28
HUAIAN YINGKE WEILI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method can only cover a limited area behind the car, while the sides and front of the car are blind spots, posing potential safety hazards
Accident prone in congested conditions

Method used

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  • Image Registration Method for Panoramic Assisted Parking System
  • Image Registration Method for Panoramic Assisted Parking System
  • Image Registration Method for Panoramic Assisted Parking System

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Embodiment Construction

[0012] The accompanying drawings disclose, without limitation, the structural schematic diagrams of the preferred embodiments involved in the utility model; the technical solution of the utility model will be described in detail below in conjunction with the accompanying drawings.

[0013] Such as Figures 1 to 3 As shown, the image registration method of the panoramic assisted parking system described in the present invention collects images through four cameras installed on the front, rear, left, and right sides of the car, such as image 3 shown. The four-way camera divides 360° into 8 areas, of which 4 areas need to be registered, namely ABCD. The collected data is preprocessed and stored in the area to be registered, such as figure 1 shown.

[0014] Such as figure 2 As shown, first select any area in ABCD, and extract the registration images of two adjacent cameras, one as the reference image and one as the matching image, and use the improved Harris corner point ext...

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Abstract

The invention discloses an image registering method for a panoramic assisted parking system. The method comprises the following steps of: (1) acquiring image data of a reference image and an image to be registered; (2) performing histogram equalization and Gauss smooth filtering pre-processing; (3) selecting characteristic points with a Hrris comer extraction method respectively; (4) performing sub-pixel correction with a Taylor polynomial; (5) coarsely matching the reference image with the image to be registered; (6) accurately matching the reference image with an image to be matched with a Canny operator and a Hausdorff distance algorithm; (7) performing spatial transformation processing on image points to be matched with an affine transformation model; and (8) fusing an affine transformation coordinate with the reference image which is accurately matched in the step (6) so as to output a registering image, wherein each affine transformation coordinate corresponds to each image point in the to-be-matched image acquired in the step (7). The image registering method has the advantages of small calculation amount, high accuracy and high robustness in the splicing process.

Description

technical field [0001] The invention relates to image processing technology, in particular to an image registration method, which is applied to corrected fisheye image stitching in an auxiliary parking system. Background technique [0002] Image registration is the process of determining the best matching relationship between two or more images taken at the same or different times and with the same or different sensors. The registration result gives the relative position relationship between the two images. Image registration is an important step in many applications such as image analysis, image stitching, image fusion, virtual reality, etc. [0003] The traditional parking assistance system is divided into two types, one is to install a reversing radar at the rear of the car, use an ultrasonic sensor to detect obstacles around the car, and sound an alarm. The disadvantage of this method is that it is not intuitive and prone to false positives. One is to install a camera...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/00G06T5/00
Inventor 朱智超徐诚陈日清夏宇
Owner HUAIAN YINGKE WEILI TECH
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