object_detection ssd_mobilenet_v1 How to use CKPT for object recognition？

System information

Have I written custom code (as opposed to using a stock example script provided in TensorFlow):NO

OS Platform and Distribution (e.g., Linux Ubuntu 16.04):mac os 10.13.5

TensorFlow installed from (source or binary):pip

TensorFlow version (use command below):'1.8.0

Python version: 3.6.4

Bazel version (if compiling from source):
Build label: 0.14.0-homebrew
Build target: bazel-out/darwin-opt/bin/src/main/java/com/google/devtools/build/lib/bazel/BazelServer_deploy.jar
Build time: Fri Jun 1 14:26:58 2018 (1527863218)
Build timestamp: 1527863218
Build timestamp as int: 1527863218

GCC/Compiler version (if compiling from source):no

CUDA/cuDNN version:no

GPU model and memory:no

Exact command to reproduce:no

Describe the problem

object_detection ssd_mobilenet_v1 How to use CKPT for object recognition？