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Image preprocessing for vehicle panoramic system

机译：车辆全景系统的图像预处理

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摘要

Due to the problem that distortion exist for panoramic image stitching in terms of vehicle panoramic system, the research on image preprocessing for panoramic system was carried out. Firstly, the principal of vehicle panoramic vision was analyzed and the fundamental role that image preprocessing procedure plays in panoramic vision is found out. And then, the camera was calibrated with Hyperboloid model and the correction for distorted image is realized. Oriented by panoramic system, the effect of mounting position was taken into consideration for image correction and the suggested angle of camera installation for different mounting position is given. Through analyzing the existing problem of bird-eye image, a method of transforming twice with calibration plates is proposed. Experiment results indicate that the proposed method can weaken the existing problem of bird-eye image effectively and it can contribute to reduce the distortion in terms of image stitching for panoramic system.
机译：由于车辆全景系统存在全景图像拼接存在失真的问题，因此进行了全景系统图像预处理的研究。首先，分析了车辆全景视觉的原理，找出了图像预处理程序在全景视觉中的基本作用。然后，通过双曲面模型对相机进行校准，从而实现了畸变图像的校正。以全景系统为导向，考虑了安装位置对图像校正的影响，并给出了针对不同安装位置的摄像机安装建议角度。通过分析鸟瞰图像存在的问题，提出了一种利用标定板进行两次变换的方法。实验结果表明，所提出的方法可以有效地缓解现有的鸟瞰图像问题，有助于减少全景系统图像拼接方面的失真。

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