摘要
提出了一种对二值化后的车牌进行反色判断的新方法。该方法通过计算车牌2~6字符区域的白像素比例和垂直投影的白像素比例,判断车牌是否需要进行反色处理。实验表明,该方法有较高的准确率。
The paper presents a new method for judging whether the color of a binary license plate needs to be reversed.The reverse color judgment is made by calculating the proportion of white pixels between 2 and 6 characters＇ areas of a license plate as well as the white pixel ratio of vertical projection.Experiments show that this method has high accuracy.
出处
《电子科技》
2011年第2期102-104,121,共4页
Electronic Science and Technology
关键词
反色判断
像素比例
垂直投影
reverse color judgment
pixels ratio
vertical projection
