Absrtact: Aiming at the disadvantages of most license plate localization methods which are short of illumination adaptability and discriminate plate color, an improved method was put forward.

摘要：针对目前大部分车牌定位算法缺乏对光照条件的适应性以及对不同底色车牌的定位率有差异的缺点，提出一种改进方法。

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The experimental results show that the method has strong adaptability to unconstrained illumination conditions and irregular background, and is efficient in locating license plate.

实验结果表明，该方法在各种光照和复杂背景条件下均有很好的适应性，对牌照定位有很高的准确性。

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A new approach is presented for vehicle license plate location and rectification based on RGB chroma space in the complicated-background and different illumination images.

针对复杂背景及不同光照条件下的车牌图像，提出了一种基于RG B色度空间的车牌定位及校正的新方法，建立了基于RG B色度空间的牌照检测模型。

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