visual_search.py 文件源码

def conv(input, kernel, biases, k_h, k_w, c_o, s_h, s_w, padding="VALID", group=1):
    '''From https://github.com/ethereon/caffe-tensorflow
    '''
    c_i = input.get_shape()[-1]
    assert c_i % group == 0
    assert c_o % group == 0
    convolve = lambda i, k: tf.nn.conv2d(i, k, [1, s_h, s_w, 1], padding=padding)

    if group == 1:
        conv = convolve(input, kernel)
    else:
        input_groups = tf.split(3, group, input)
        kernel_groups = tf.split(3, group, kernel)
        output_groups = [convolve(i, k) for i, k in zip(input_groups, kernel_groups)]
        conv = tf.concat(3, output_groups)
    return tf.reshape(tf.nn.bias_add(conv, biases), [-1] + conv.get_shape().as_list()[1:])