title: How to make Tensorflow vid2depth inference works?
body: <p>I tried to test Tensorflow's vid2depth inference (<a href="https://github.com/tensorflow/models/tree/master/research/vid2depth" rel="nofollow noreferrer">https://github.com/tensorflow/models/tree/master/research/vid2depth</a>).
  I followed the instruction of the README. However, I got the below error:</p>
  <pre><code>ValueError: Couldn't find 'checkpoint' file or checkpoints in given directory vid2depth/trained-model/model-119496
  </code></pre>
  <p>I test with tf 0.12, 1.0.0. 1.8 and 1.15.</p>
  <p>I used the below command:</p>
  <pre><code>python3.6 inference.py --kitti_dir ~/vid2depth/kitti-raw-uncompressed --output_dir ~/vid2depth/inference --kitti_video 2011_09_26/2011_09_26_drive_0009_sync --model_ckpt ~/vid2depth/trained-model/model-119496/
  </code></pre>
  <p>The content of the checkpoint folder I downloaded is:</p>
  <pre><code>model-119496.data-00000-of-00001  model-119496.index  model-119496.meta
  </code></pre>
  <p>It seems provided files are not in the correct format, but I followed the link of the README.
  It seems to be an old checkpoint format (<a href="https://stackoverflow.com/questions/43320993/loading-older-checkpoint-in-tensorflow#43324589">Loading older checkpoint in tensorflow</a>).</p>
  <p>Could anyone make vid2depth works?</p>
  <p>Thank you.</p>