TensorFlow：简单的卷积层、池化层（采样层）示例
卷积层：ws=tf.get_variable('w',[5,5,3,16],initializer=tf.truncated_normal_initializer(stddev=0.1))bs=tf.get_variable('b',[16],initializer=tf.constant_initializer(0.1))conv=tf.nn.conv2d(input,ws,strid
