For example, the image of the two characters holding up the Earth graphic is relatively symmetrical, yet has details that would not allow it to line up perfectly.
两个小人举起地球的图片相对来说是对称的,但是细节上又不完全一致。
In a horizontally symmetrical flag, the bottom half of the blue square is a mirror image of the top half.
而在水平对称的星条旗中,蓝色方形区域下半部为上半部的景象。
After characters are divided from the raster image, the features of characters are extracted by symmetrical grids and then are inputted into BP neural network for further analysis.
首先对图纸的光栅图像进行字符分离,利用均匀网格方法抽取字符特征,用BP神经网络进行训练和识别。
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