diff --git a/doc/installation_jetson_tx2_jetpack3.3.md b/doc/installation_jetson_tx2_jetpack3.3.md
index aac59cee10e3c905d815b842280c2b3ae3f702e8..3397351529eca21e8a5384798087d5144ef79bd8 100644
--- a/doc/installation_jetson_tx2_jetpack3.3.md
+++ b/doc/installation_jetson_tx2_jetpack3.3.md
@@ -29,15 +29,17 @@ Notes:
 
 
 ## Installation
-1. Use the following script for installation of both caffe and OpenPose: 
+Use the following script for installation of both caffe and OpenPose:
 ```
 bash ./scripts/ubuntu/install_caffe_and_openpose_JetsonTX2_JetPack3.3.sh
 ```
-2. If you do not want to build the Python libraries, the installation is finished. Otherwise, edit the BUILD_PYTHON flag on CMakeLists.txt:
+
+Optional: If you want to build the Python libraries, then:
+1. Edit the `BUILD_PYTHON` flag on `CMakeLists.txt`:
 
 ```option(BUILD_PYTHON "Build OpenPose python." ON)```
 
-and, in both places where this appears, set the flag to ON:
+2. In both places where this appears, set the flag to ON:
 ```
 -DBUILD_python=ON
 -DBUILD_python_layer=ON
@@ -48,12 +50,14 @@ and, in both places where this appears, set the flag to ON:
 ```cmake -DBUILD_PYTHON=ON -DPYTHON_EXECUTABLE=/usr/bin/python2.7 -DPYTHON_LIBRARY=/usr/lib/aarch64-linux-gnu/libpython2.7.so ..```
 
 4. Now run `make`.  You should see a file called "pyopenpose.so" if Python was set to 2.7, in
-/home/nvidia/openpose/build/python/openpose. Otherwise, it will be "pyopenpose.cpython-35m-aarch64-linux-gnu"
+`/home/nvidia/openpose/build/python/openpose`. Otherwise, it will be `pyopenpose.cpython-35m-aarch64-linux-gnu`.
 
 5. Finally, run `sudo make install` inside build to copy the files to /usr/local/python and set PYTHONPATH accordingly on .bashrc:
 
 ```export PYTHONPATH="${PYTHONPATH}:/usr/local/python```
 
+
+
 ## Usage
 It is for now recommended to use an external camera with the demo. To get to decent FPS you need to lower the net resolution:
 ```
diff --git a/examples/tests/resizeTest.cpp b/examples/tests/resizeTest.cpp
index d6fc76b85ff4be59712c364c57ccc11649491636..06652e47ae362931fd135f3bb031c81a659ca926 100644
--- a/examples/tests/resizeTest.cpp
+++ b/examples/tests/resizeTest.cpp
@@ -79,7 +79,7 @@
         try
         {
             // logging_level
-            op::Matrix opImg = op::loadImage(FLAGS_image_path, CV_LOAD_IMAGE_GRAYSCALE);
+            op::Matrix opImg = op::loadImage(FLAGS_image_path, getCvLoadImageGrayScale());
             cv::Mat img = OP_OP2CVMAT(opImg);
             if(img.empty())
                 op::error("Could not open or find the image: " + FLAGS_image_path, __LINE__, __FUNCTION__, __FILE__);
diff --git a/include/openpose/utilities/openCv.hpp b/include/openpose/utilities/openCv.hpp
index b926929df9fcbf13bfef4b7285a20a7bf5ff3644..9c70364e823d4d7d3fc092546959d83263404232 100644
--- a/include/openpose/utilities/openCv.hpp
+++ b/include/openpose/utilities/openCv.hpp
@@ -60,6 +60,11 @@ namespace op
      * Wrapper of CV_LOAD_IMAGE_ANYDEPTH to avoid leaving OpenCV dependencies on headers.
      */
     OP_API int getCvLoadImageAnydepth();
+
+    /**
+     * Wrapper of CV_LOAD_IMAGE_GRAYSCALE to avoid leaving OpenCV dependencies on headers.
+     */
+    OP_API int getCvLoadImageGrayScale();
 }
 
 #endif // OPENPOSE_UTILITIES_OPEN_CV_HPP
diff --git a/scripts/ubuntu/install_cuda.sh b/scripts/ubuntu/install_cuda.sh
index e1ad5f0be50d9a96cca1931cd91c7ba2c4b8af5d..e12b0b64436e161935c8d6f4ac721c320d31e6c0 100755
--- a/scripts/ubuntu/install_cuda.sh
+++ b/scripts/ubuntu/install_cuda.sh
@@ -1,6 +1,7 @@
 #!/bin/bash
 
-echo "NOTE: This script assumes Ubuntu 16 or 14 and Nvidia Graphics card up to 10XX. Otherwise, install it by yourself or it will fail."
+echo "NOTE: This script assumes Ubuntu 18 (Nvidia Graphics card >= 10XX), 16 (card up to 10XX), or 14 (card up to 10XX)."
+echo "Otherwise, install it by yourself or it might fail."
 
 # Install CUDA 8.0
 ubuntu_version="$(lsb_release -r)"
@@ -8,11 +9,16 @@ sudo apt-get update && sudo apt-get install wget -y --no-install-recommends
 if [[ $ubuntu_version == *"14."* ]]; then
   wget -c "https://developer.nvidia.com/compute/cuda/8.0/Prod2/local_installers/cuda-repo-ubuntu1404-8-0-local-ga2_8.0.61-1_amd64-deb"
   sudo dpkg --install cuda-repo-ubuntu1404-8-0-local-ga2_8.0.61-1_amd64-deb
+  sudo apt-get update
+  sudo apt-get install cuda-8-0
 elif [[ $ubuntu_version == *"16."* ]]; then
   wget -c "https://developer.nvidia.com/compute/cuda/8.0/Prod2/local_installers/cuda-repo-ubuntu1604-8-0-local-ga2_8.0.61-1_amd64-deb"
   sudo dpkg --install cuda-repo-ubuntu1604-8-0-local-ga2_8.0.61-1_amd64-deb
+  sudo apt-get update
+  sudo apt-get install cuda-8-0
+# Install CUDA 10.0
 elif [[ $ubuntu_version == *"18."* ]]; then
-  wget https://developer.download.nvidia.com/compute/cuda/repos/ubuntu1804/x86_64/cuda-ubuntu1804.pin
+  wget -c "https://developer.download.nvidia.com/compute/cuda/repos/ubuntu1804/x86_64/cuda-ubuntu1804.pin"
   sudo mv cuda-ubuntu1804.pin /etc/apt/preferences.d/cuda-repository-pin-600
   wget http://developer.download.nvidia.com/compute/cuda/10.2/Prod/local_installers/cuda-repo-ubuntu1804-10-2-local-10.2.89-440.33.01_1.0-1_amd64.deb
   sudo dpkg -i cuda-repo-ubuntu1804-10-2-local-10.2.89-440.33.01_1.0-1_amd64.deb
@@ -20,6 +26,4 @@ elif [[ $ubuntu_version == *"18."* ]]; then
   sudo apt-get update
   sudo apt-get -y install cuda
 fi
-sudo apt-get update
-sudo apt-get install cuda-8-0
 # sudo apt-get install cuda
diff --git a/src/openpose/utilities/openCv.cpp b/src/openpose/utilities/openCv.cpp
index b6fe86c64067f8f21bf6610d06046730263e0589..bd1141e7f1c8d45d6eb9965e6efece76d5182938 100644
--- a/src/openpose/utilities/openCv.cpp
+++ b/src/openpose/utilities/openCv.cpp
@@ -372,4 +372,17 @@ namespace op
             return -1;
         }
     }
+
+    int getCvLoadImageGrayScale()
+    {
+        try
+        {
+            return CV_LOAD_IMAGE_GRAYSCALE;
+        }
+        catch (const std::exception& e)
+        {
+            error(e.what(), __LINE__, __FUNCTION__, __FILE__);
+            return -1;
+        }
+    }
 }