Applied BP neural network to recognize Numbers, and adopted a method of wipe off miscellaneous points to take out noise, and used a method of per pix feature extraction to extract feature vector.
应用BP神经网络对数字进行识别，其图像的预处理采用去除杂点方法去除噪声，使用逐像素特征提取方法进行特征向量的提取。
To handle the true 3D nature of the wavefield, including the wide azimuths and large take-off angles of the ghosts, a 3D deghosting method was developed.
为了处理波场的真实3D特性（其中包括宽方位角和重影入射角），发明了三维虚反射剔除方法。
Compared with the traditional method, this method simplifies let-off and take-up mechanism, improves automatic level and synchronous character of let-off and take-up motion.
与传统的方法相比，该方法使送经卷取机构大大简化，自动化程度高，送经卷取同步性能好。
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