The thesis discusses the image pretreatment methods of image grayness, grayness transform, image smoothness, image sharpness and image binarization;
论文深入研究了图像灰度处理、图像灰度变换、图像平滑、图像锐化、图像二值化等图像预处理方法。
With the use of the theory of self-adaptation and fussy, several methods of setting gate of binarization were presented.
应用自适应理论和模糊理论，提出几种确定二值化阀值的具体方法。
The new methods of the early technique of LP recognition, including LP location, LP image contrast estimation, binarization, and characters segmentation are studied and proposed.
讨论了数字图像处理在车牌识别中所使用的各种技术，对于车牌边缘检测和车牌字符分割等关键处理技术进行了较为详细的论述。
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