Description: Image vehicle license positioning accuracy is directly related to the automatic license plate recognition system s overall performance. Considered due to time and weather caused by different license plate illumination characteristics significantly different picture clarity, a new adaptive dynamic threshold plate positioning algorithm the method first analyzes the sharpness, the white point of the image in a fixed proportion of the differential value is proportional to the mean inner then, remove the discrete noise plate area for the rows and columns have different characteristics, with different methods for horizontal and vertical plates pinpoint areas, and ultimately find the target plate region. experiments show that the method plate positioning accuracy rate of 98.7
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车牌识别(改定位)\ISICA 2008国际会议通讯录.xls
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