Image fusion method for panoramic parking system

Abstract

The invention discloses an image fusion method for a panoramic parking system, which is an image processing method applied to an automobile electronic field and an automobile safety assistant driving field. The image fusion method comprises the following steps of: obtaining the coordinate of a pixel point in a superposition area, calculating an included angle formed by the pixel point and a boundary line of the superposition area, calculating alpha channel values of two images at the pixel point and fusing images of the superposition area. According to the image fusion method disclosed by the invention, the aerial-view of the superposition area can be fused into a whole body, a problem that an obvious splicing trace exists in a superposition sampling area is solved, and internal images in the superposition area are in natural and smooth transition so that user experience of the panoramic parking system is increased. The image fusion method disclosed by the invention utilizes a mathematical model in accordance with the change rule of an actual problem, has the advantages of very small calculation amount, high processing speed and strong expandability and is suitable for large-scale popularization and application.

Description

technical field [0001] The invention relates to the fields of automotive electronics and machine vision, in particular to an image processing method in the field of automotive safety assisted driving. Background technique [0002] In recent years, with the rapid development of the automobile industry and the continuous improvement of people's living standards, the number of automobiles in our country is increasing rapidly, and the proportion of non-professional automobile drivers among automobile drivers has also increased significantly. When reversing in crowded and narrow places such as streets, garages and parking lots, scratches are prone to occur due to the blind spots of conventional optical rearview mirrors. [0003] In order to solve the problem of the blind spot of the reversing perspective, a simple reversing rearview system was born. Through a camera installed at the rear of the vehicle body, the driver can see the image of a small area behind the vehicle body in...

AI Technical Summary

Problems solved by technology

In this way, in the four corners of the car body, that is, the overlapping sampling areas between the various cameras, there will be obvious stitching gaps, the overall sense of the panoramic image is not enough, and the user experience is poor.

[0006] Patent application number 201110070860.9 proposes an image processing method and subsystem in a vehicle assistance system, but in its image fusion method, the fusion weight is only estimated by the ratio of the distance between the pixel point and the two boundary lines

This mathematical model is too simple to reflect the changing law of the actual problem, resulting in an uneven transition inside the overlapping area, and two fuzzy splicing traces will still be generated near the boundary line inside the overlapping area

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