import tensorflow as tf

        with tf.variable_scope('scop'):
            self.w1=tf.get_variable('w1', [4096,1024],initializer=tf.contrib.layers.xavier_initializer_conv2d())
            self.w2=tf.get_variable('w2', [1024,classnum],initializer=tf.contrib.layers.xavier_initializer_conv2d())
            self.b1 = tf.get_variable('b1', [1024],initializer=tf.constant_initializer(0.0))
