diff --git a/.travis.yml b/.travis.yml
index 19335fd6..060f36ca 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -9,14 +9,14 @@ matrix:
 
     - os: osx
       compiler: gcc
-      name: macOS - native gcc (llvm backend)
+      name: macOS - gcc (llvm backend)
       env:
         - additional_defines=""
         - MATRIX_EVAL=""
 
     - os: osx
       compiler: gcc
-      name: macOS - native gcc (llvm backend) - opencv@2
+      name: macOS - gcc (llvm backend) - opencv@2
       env:
         - OpenCV_DIR="/usr/local/opt/opencv@2/"
         - additional_defines="-DOpenCV_DIR=${OpenCV_DIR}"
@@ -24,7 +24,7 @@ matrix:
 
     - os: osx
       compiler: gcc
-      name: macOS - native gcc (llvm backend) - opencv@3
+      name: macOS - gcc (llvm backend) - opencv@3
       env:
         - OpenCV_DIR="/usr/local/opt/opencv@3/"
         - additional_defines="-DOpenCV_DIR=${OpenCV_DIR}"
@@ -32,28 +32,28 @@ matrix:
 
     - os: osx
       compiler: gcc
-      name: macOS - native gcc (llvm backend) - opencv(latest)
+      name: macOS - gcc (llvm backend) - opencv(latest)
       env:
         - additional_defines=""
         - MATRIX_EVAL="brew install opencv"
 
     - os: osx
       compiler: clang
-      name: macOS - native clang
+      name: macOS - clang
       env:
         - additional_defines=""
         - MATRIX_EVAL=""
 
     - os: osx
       compiler: clang
-      name: macOS - native clang - C++ mode
+      name: macOS - clang - C++ mode
       env:
         - additional_defines="-DBUILD_AS_CPP:BOOL=TRUE"
         - MATRIX_EVAL=""
 
     - os: osx
       compiler: clang
-      name: macOS - native clang - opencv@2
+      name: macOS - clang - opencv@2
       env:
         - OpenCV_DIR="/usr/local/opt/opencv@2/"
         - additional_defines="-DOpenCV_DIR=${OpenCV_DIR}"
@@ -61,7 +61,7 @@ matrix:
 
     - os: osx
       compiler: clang
-      name: macOS - native clang - opencv@3
+      name: macOS - clang - opencv@3
       env:
         - OpenCV_DIR="/usr/local/opt/opencv@3/"
         - additional_defines="-DOpenCV_DIR=${OpenCV_DIR}"
@@ -69,13 +69,13 @@ matrix:
 
     - os: osx
       compiler: clang
-      name: macOS - native clang - opencv(latest)
+      name: macOS - clang - opencv(latest)
       env:
         - additional_defines=""
         - MATRIX_EVAL="brew install opencv"
 
     - os: osx
-      name: macOS - vcpkg
+      name: macOS - clang - vcpkg
       osx_image: xcode10.1
       env:
         - additional_defines=""
@@ -85,197 +85,32 @@ matrix:
 
     - os: linux
       compiler: clang
-      name: ubuntu 14.04 - native clang
-      addons:
-        apt:
-          update: true
-      env:
-        - additional_defines=""
-        - MATRIX_EVAL=""
-
-    - os: linux
-      compiler: clang
-      name: ubuntu 14.04 - clang@3.6
-      addons:
-        apt:
-          update: true
-          packages:
-            - clang-3.6
-      env:
-        - additional_defines=""
-        - MATRIX_EVAL="export CC=clang-3.6 && export CXX=clang++-3.6"
-
-    - os: linux
-      compiler: clang
-      name: ubuntu 14.04 - clang@3.8
-      addons:
-        apt:
-          update: true
-          sources:
-            - llvm-toolchain-precise-3.8
-          packages:
-            - clang-3.8
-      env:
-        - additional_defines=""
-        - MATRIX_EVAL="export CC=clang-3.8 && export CXX=clang++-3.8"
-
-    - os: linux
-      compiler: clang
-      name: ubuntu 14.04 - clang@3.9
-      addons:
-        apt:
-          update: true
-          sources:
-            - llvm-toolchain-trusty-3.9
-          packages:
-            - clang-3.9
-      env:
-        - additional_defines=""
-        - MATRIX_EVAL="export CC=clang-3.9 && export CXX=clang++-3.9"
-
-    - os: linux
-      compiler: clang
-      name: ubuntu 14.04 - clang@4.0
-      addons:
-        apt:
-          update: true
-          sources:
-            - llvm-toolchain-trusty-4.0
-          packages:
-            - clang-4.0
-      env:
-        - additional_defines=""
-        - MATRIX_EVAL="export CC=clang-4.0 && export CXX=clang++-4.0"
-
-    - os: linux
-      compiler: clang
-      name: ubuntu 14.04 - clang@5.0
-      addons:
-        apt:
-          update: true
-          sources:
-            - llvm-toolchain-trusty-5.0
-          packages:
-            - clang-5.0
-      env:
-        - additional_defines=""
-        - MATRIX_EVAL="export CC=clang-5.0 && export CXX=clang++-5.0"
-
-    - os: linux
-      compiler: clang
-      name: ubuntu 14.04 - clang@6.0
-      addons:
-        apt:
-          update: true
-          sources:
-            - llvm-toolchain-trusty-6.0
-            - ubuntu-toolchain-r-test
-          packages:
-            - clang-6.0
-      env:
-        - additional_defines=""
-        - MATRIX_EVAL="export CC=clang-6.0 && export CXX=clang++-6.0"
-
-    - os: linux
-      compiler: gcc
-      name: ubuntu 14.04 - native gcc
-      addons:
-        apt:
-          update: true
+      dist: bionic
+      name: ubuntu 18.04 - clang
       env:
         - additional_defines=""
         - MATRIX_EVAL=""
 
     - os: linux
       compiler: gcc
-      name: ubuntu 14.04 - native gcc - C++ mode
-      addons:
-        apt:
-          update: true
+      dist: bionic
+      name: ubuntu 18.04 - gcc
+      env:
+        - additional_defines=""
+        - MATRIX_EVAL=""
+
+    - os: linux
+      compiler: gcc
+      dist: bionic
+      name: ubuntu 18.04 - g++
       env:
         - additional_defines="-DBUILD_AS_CPP:BOOL=TRUE"
         - MATRIX_EVAL=""
 
     - os: linux
       compiler: gcc
-      name: ubuntu 14.04 - gcc@4.9
-      addons:
-        apt:
-          update: true
-          sources:
-            - ubuntu-toolchain-r-test
-          packages:
-            - g++-4.9
-      env:
-        - additional_defines=""
-        - MATRIX_EVAL="export CC=gcc-4.9 && export CXX=g++-4.9"
-
-    - os: linux
-      compiler: gcc
-      name: ubuntu 14.04 - gcc@5.0
-      addons:
-        apt:
-          update: true
-          sources:
-            - ubuntu-toolchain-r-test
-          packages:
-            - g++-5
-      env:
-        - additional_defines=""
-        - MATRIX_EVAL="export CC=gcc-5 && export CXX=g++-5"
-
-    - os: linux
-      compiler: gcc
-      name: ubuntu 14.04 - gcc@6.0
-      addons:
-        apt:
-          update: true
-          sources:
-            - ubuntu-toolchain-r-test
-          packages:
-            - g++-6
-      env:
-        - additional_defines=""
-        - MATRIX_EVAL="export CC=gcc-6 && export CXX=g++-6"
-
-    - os: linux
-      compiler: gcc
-      name: ubuntu 14.04 - gcc@7.0
-      addons:
-        apt:
-          update: true
-          sources:
-            - ubuntu-toolchain-r-test
-          packages:
-            - g++-7
-      env:
-        - additional_defines=""
-        - MATRIX_EVAL="export CC=gcc-7 && export CXX=g++-7"
-
-    - os: linux
-      compiler: gcc
-      name: ubuntu 14.04 - gcc@8.0
-      addons:
-        apt:
-          update: true
-          sources:
-            - ubuntu-toolchain-r-test
-          packages:
-            - g++-8
-      env:
-        - additional_defines=""
-        - MATRIX_EVAL="export CC=gcc-8 && export CXX=g++-8"
-
-    - os: linux
-      compiler: gcc
-      name: ubuntu 14.04 - gcc@8.0 - vcpkg
-      addons:
-        apt:
-          update: true
-          sources:
-            - ubuntu-toolchain-r-test
-          packages:
-            - g++-8
+      dist: bionic
+      name: ubuntu 18.04 - gcc - vcpkg
       env:
         - additional_defines=""
         - USE_VCPKG=true
@@ -284,108 +119,8 @@ matrix:
 
     - os: linux
       compiler: clang
-      name: ubuntu 14.04 - native clang - opencv@2
-      addons:
-        apt:
-          update: true
-          packages:
-            - libopencv-dev
-      env:
-        - additional_defines=""
-        - MATRIX_EVAL=""
-
-    - os: linux
-      compiler: clang
-      name: ubuntu 14.04 - clang@3.6 - opencv@2
-      addons:
-        apt:
-          update: true
-          packages:
-            - libopencv-dev
-            - clang-3.6
-      env:
-        - additional_defines=""
-        - MATRIX_EVAL="export CC=clang-3.6 && export CXX=clang++-3.6"
-
-    - os: linux
-      compiler: clang
-      name: ubuntu 14.04 - clang@3.8 - opencv@2
-      addons:
-        apt:
-          update: true
-          sources:
-            - llvm-toolchain-precise-3.8
-          packages:
-            - libopencv-dev
-            - clang-3.8
-      env:
-        - additional_defines=""
-        - MATRIX_EVAL="export CC=clang-3.8 && export CXX=clang++-3.8"
-
-    - os: linux
-      compiler: clang
-      name: ubuntu 14.04 - clang@3.9 - opencv@2
-      addons:
-        apt:
-          update: true
-          sources:
-            - llvm-toolchain-trusty-3.9
-          packages:
-            - libopencv-dev
-            - clang-3.9
-      env:
-        - additional_defines=""
-        - MATRIX_EVAL="export CC=clang-3.9 && export CXX=clang++-3.9"
-
-    - os: linux
-      compiler: clang
-      name: ubuntu 14.04 - clang@4.0 - opencv@2
-      addons:
-        apt:
-          update: true
-          sources:
-            - llvm-toolchain-trusty-4.0
-          packages:
-            - libopencv-dev
-            - clang-4.0
-      env:
-        - additional_defines=""
-        - MATRIX_EVAL="export CC=clang-4.0 && export CXX=clang++-4.0"
-
-    - os: linux
-      compiler: clang
-      name: ubuntu 14.04 - clang@5.0 - opencv@2
-      addons:
-        apt:
-          update: true
-          sources:
-            - llvm-toolchain-trusty-5.0
-          packages:
-            - libopencv-dev
-            - clang-5.0
-      env:
-        - additional_defines=""
-        - MATRIX_EVAL="export CC=clang-5.0 && export CXX=clang++-5.0"
-
-    - os: linux
-      compiler: clang
-      name: ubuntu 14.04 - clang@6.0 - opencv@2
-      addons:
-        apt:
-          update: true
-          sources:
-            - llvm-toolchain-trusty-6.0
-            - ubuntu-toolchain-r-test
-          packages:
-            - libopencv-dev
-            - clang-6.0
-      env:
-        - additional_defines=""
-        - MATRIX_EVAL="export CC=clang-6.0 && export CXX=clang++-6.0"
-
-    - os: linux
-      compiler: gcc
-      name: ubuntu 14.04 - native gcc - opencv@2
+      dist: bionic
+      name: ubuntu 18.04 - clang - opencv@3
       addons:
         apt:
           update: true
@@ -397,87 +132,11 @@ matrix:
 
     - os: linux
       compiler: gcc
-      name: ubuntu 14.04 - gcc@4.9 - opencv@2
+      dist: bionic
+      name: ubuntu 18.04 - gcc - opencv@3
       addons:
         apt:
           update: true
-          sources:
-            - ubuntu-toolchain-r-test
-          packages:
-            - libopencv-dev
-            - g++-4.9
-      env:
-        - additional_defines=""
-        - MATRIX_EVAL="export CC=gcc-4.9 && export CXX=g++-4.9"
-
-    - os: linux
-      compiler: gcc
-      name: ubuntu 14.04 - gcc@5.0 - opencv@2
-      addons:
-        apt:
-          update: true
-          sources:
-            - ubuntu-toolchain-r-test
-          packages:
-            - libopencv-dev
-            - g++-5
-      env:
-        - additional_defines=""
-        - MATRIX_EVAL="export CC=gcc-5 && export CXX=g++-5"
-
-    - os: linux
-      compiler: gcc
-      name: ubuntu 14.04 - gcc@6.0 - opencv@2
-      addons:
-        apt:
-          update: true
-          sources:
-            - ubuntu-toolchain-r-test
-          packages:
-            - g++-6
-            - libopencv-dev
-      env:
-        - additional_defines=""
-        - MATRIX_EVAL="export CC=gcc-6 && export CXX=g++-6"
-
-    - os: linux
-      compiler: gcc
-      name: ubuntu 14.04 - gcc@7.0 - opencv@2
-      addons:
-        apt:
-          update: true
-          sources:
-            - ubuntu-toolchain-r-test
-          packages:
-            - libopencv-dev
-            - g++-7
-      env:
-        - additional_defines=""
-        - MATRIX_EVAL="export CC=gcc-7 && export CXX=g++-7"
-
-    - os: linux
-      compiler: gcc
-      name: ubuntu 14.04 - gcc@8.0 - opencv@2
-      addons:
-        apt:
-          update: true
-          sources:
-            - ubuntu-toolchain-r-test
-          packages:
-            - libopencv-dev
-            - g++-8
-      env:
-        - additional_defines=""
-        - MATRIX_EVAL="export CC=gcc-8 && export CXX=g++-8"
-
-    - os: linux
-      compiler: clang
-      name: ubuntu 14.04 - native clang - opencv@3
-      addons:
-        apt:
-          update: true
-          sources:
-            - sourceline: 'ppa:timsc/opencv-3.4'
           packages:
             - libopencv-dev
       env:
@@ -486,326 +145,8 @@ matrix:
 
     - os: linux
       compiler: clang
-      name: ubuntu 14.04 - clang@3.6 - opencv@3
-      addons:
-        apt:
-          update: true
-          sources:
-            - sourceline: 'ppa:timsc/opencv-3.4'
-          packages:
-            - libopencv-dev
-            - clang-3.6
-      env:
-        - additional_defines=""
-        - MATRIX_EVAL="export CC=clang-3.6 && export CXX=clang++-3.6"
-
-    - os: linux
-      compiler: clang
-      name: ubuntu 14.04 - clang@3.8 - opencv@3
-      addons:
-        apt:
-          update: true
-          sources:
-            - llvm-toolchain-precise-3.8
-            - sourceline: 'ppa:timsc/opencv-3.4'
-          packages:
-            - libopencv-dev
-            - clang-3.8
-      env:
-        - additional_defines=""
-        - MATRIX_EVAL="export CC=clang-3.8 && export CXX=clang++-3.8"
-
-    - os: linux
-      compiler: clang
-      name: ubuntu 14.04 - clang@3.9 - opencv@3
-      addons:
-        apt:
-          update: true
-          sources:
-            - llvm-toolchain-trusty-3.9
-            - sourceline: 'ppa:timsc/opencv-3.4'
-          packages:
-            - libopencv-dev
-            - clang-3.9
-      env:
-        - additional_defines=""
-        - MATRIX_EVAL="export CC=clang-3.9 && export CXX=clang++-3.9"
-
-    - os: linux
-      compiler: clang
-      name: ubuntu 14.04 - clang@4.0 - opencv@3
-      addons:
-        apt:
-          update: true
-          sources:
-            - llvm-toolchain-trusty-4.0
-            - sourceline: 'ppa:timsc/opencv-3.4'
-          packages:
-            - libopencv-dev
-            - clang-4.0
-      env:
-        - additional_defines=""
-        - MATRIX_EVAL="export CC=clang-4.0 && export CXX=clang++-4.0"
-
-    - os: linux
-      compiler: clang
-      name: ubuntu 14.04 - clang@5.0 - opencv@3
-      addons:
-        apt:
-          update: true
-          sources:
-            - llvm-toolchain-trusty-5.0
-            - sourceline: 'ppa:timsc/opencv-3.4'
-          packages:
-            - libopencv-dev
-            - clang-5.0
-      env:
-        - additional_defines=""
-        - MATRIX_EVAL="export CC=clang-5.0 && export CXX=clang++-5.0"
-
-    - os: linux
-      compiler: clang
-      name: ubuntu 14.04 - clang@6.0 - opencv@3
-      addons:
-        apt:
-          update: true
-          sources:
-            - llvm-toolchain-trusty-6.0
-            - ubuntu-toolchain-r-test
-            - sourceline: 'ppa:timsc/opencv-3.4'
-          packages:
-            - libopencv-dev
-            - clang-6.0
-      env:
-        - additional_defines=""
-        - MATRIX_EVAL="export CC=clang-6.0 && export CXX=clang++-6.0"
-
-    - os: linux
-      compiler: gcc
-      name: ubuntu 14.04 - native gcc - opencv@3
-      addons:
-        apt:
-          update: true
-          sources:
-            - sourceline: 'ppa:timsc/opencv-3.4'
-          packages:
-            - libopencv-dev
-      env:
-        - additional_defines=""
-        - MATRIX_EVAL=""
-
-    - os: linux
-      compiler: gcc
-      name: ubuntu 14.04 - gcc@4.9 - opencv@3
-      addons:
-        apt:
-          update: true
-          sources:
-            - ubuntu-toolchain-r-test
-            - sourceline: 'ppa:timsc/opencv-3.4'
-          packages:
-            - libopencv-dev
-            - g++-4.9
-      env:
-        - additional_defines=""
-        - MATRIX_EVAL="export CC=gcc-4.9 && export CXX=g++-4.9"
-
-    - os: linux
-      compiler: gcc
-      name: ubuntu 14.04 - gcc@5.0 - opencv@3
-      addons:
-        apt:
-          update: true
-          sources:
-            - ubuntu-toolchain-r-test
-            - sourceline: 'ppa:timsc/opencv-3.4'
-          packages:
-            - libopencv-dev
-            - g++-5
-      env:
-        - additional_defines=""
-        - MATRIX_EVAL="export CC=gcc-5 && export CXX=g++-5"
-
-    - os: linux
-      compiler: gcc
-      name: ubuntu 14.04 - gcc@6.0 - opencv@3
-      addons:
-        apt:
-          update: true
-          sources:
-            - ubuntu-toolchain-r-test
-            - sourceline: 'ppa:timsc/opencv-3.4'
-          packages:
-            - g++-6
-            - libopencv-dev
-      env:
-        - additional_defines=""
-        - MATRIX_EVAL="export CC=gcc-6 && export CXX=g++-6"
-
-    - os: linux
-      compiler: gcc
-      name: ubuntu 14.04 - gcc@7.0 - opencv@3
-      addons:
-        apt:
-          update: true
-          sources:
-            - ubuntu-toolchain-r-test
-            - sourceline: 'ppa:timsc/opencv-3.4'
-          packages:
-            - libopencv-dev
-            - g++-7
-      env:
-        - additional_defines=""
-        - MATRIX_EVAL="export CC=gcc-7 && export CXX=g++-7"
-
-    - os: linux
-      compiler: gcc
-      name: ubuntu 14.04 - gcc@8.0 - opencv@3
-      addons:
-        apt:
-          update: true
-          sources:
-            - ubuntu-toolchain-r-test
-            - sourceline: 'ppa:timsc/opencv-3.4'
-          packages:
-            - libopencv-dev
-            - g++-8
-      env:
-        - additional_defines=""
-        - MATRIX_EVAL="export CC=gcc-8 && export CXX=g++-8"
-
-    - os: linux
-      compiler: clang
-      name: ubuntu 14.04 - native clang - CUDA 10 - opencv@2
-      addons:
-        apt:
-          update: true
-          packages:
-            - libopencv-dev
-      env:
-        - additional_defines=""
-        - CUDACXX=/usr/local/cuda-10.0/bin/nvcc
-        - CUDA_PATH=/usr/local/cuda-10.0
-        - CUDA_TOOLKIT_ROOT_DIR=/usr/local/cuda-10.0
-        - LD_LIBRARY_PATH="/usr/local/cuda-10.0/lib64:/usr/local/cuda-10.0/lib64/stubs:${LD_LIBRARY_PATH}"
-        - MATRIX_EVAL="wget http://developer.download.nvidia.com/compute/cuda/repos/ubuntu1404/x86_64/cuda-repo-ubuntu1404_10.0.130-1_amd64.deb && sudo apt-key adv --fetch-keys http://developer.download.nvidia.com/compute/cuda/repos/ubuntu1404/x86_64/7fa2af80.pub && sudo dpkg -i cuda-repo-ubuntu1404_10.0.130-1_amd64.deb && wget http://developer.download.nvidia.com/compute/machine-learning/repos/ubuntu1404/x86_64/nvidia-machine-learning-repo-ubuntu1404_4.0-2_amd64.deb && sudo dpkg -i nvidia-machine-learning-repo-ubuntu1404_4.0-2_amd64.deb && sudo apt-get -y update && sudo apt-get install -y --no-install-recommends cuda-compiler-10-0 cuda-libraries-dev-10-0 cuda-driver-dev-10-0 cuda-cudart-dev-10-0 cuda-cublas-dev-10-0 cuda-curand-dev-10-0 && sudo apt-get install -y --no-install-recommends libcudnn7-dev && sudo ln -s /usr/local/cuda-10.0/lib64/stubs/libcuda.so /usr/local/cuda-10.0/lib64/stubs/libcuda.so.1"
-
-    - os: linux
-      compiler: clang
-      name: ubuntu 14.04 - clang@3.6 - CUDA 10 - opencv@2
-      addons:
-        apt:
-          update: true
-          packages:
-            - libopencv-dev
-            - clang-3.6
-      env:
-        - additional_defines=""
-        - CUDACXX=/usr/local/cuda-10.0/bin/nvcc
-        - CUDA_PATH=/usr/local/cuda-10.0
-        - CUDA_TOOLKIT_ROOT_DIR=/usr/local/cuda-10.0
-        - LD_LIBRARY_PATH="/usr/local/cuda-10.0/lib64:/usr/local/cuda-10.0/lib64/stubs:${LD_LIBRARY_PATH}"
-        - MATRIX_EVAL="export CC=clang-3.6 && export CXX=clang++-3.6 && wget http://developer.download.nvidia.com/compute/cuda/repos/ubuntu1404/x86_64/cuda-repo-ubuntu1404_10.0.130-1_amd64.deb && sudo apt-key adv --fetch-keys http://developer.download.nvidia.com/compute/cuda/repos/ubuntu1404/x86_64/7fa2af80.pub && sudo dpkg -i cuda-repo-ubuntu1404_10.0.130-1_amd64.deb && wget http://developer.download.nvidia.com/compute/machine-learning/repos/ubuntu1404/x86_64/nvidia-machine-learning-repo-ubuntu1404_4.0-2_amd64.deb && sudo dpkg -i nvidia-machine-learning-repo-ubuntu1404_4.0-2_amd64.deb && sudo apt-get -y update && sudo apt-get install -y --no-install-recommends cuda-compiler-10-0 cuda-libraries-dev-10-0 cuda-driver-dev-10-0 cuda-cudart-dev-10-0 cuda-cublas-dev-10-0 cuda-curand-dev-10-0 && sudo apt-get install -y --no-install-recommends libcudnn7-dev && sudo ln -s /usr/local/cuda-10.0/lib64/stubs/libcuda.so /usr/local/cuda-10.0/lib64/stubs/libcuda.so.1"
-
-    - os: linux
-      compiler: clang
-      name: ubuntu 14.04 - clang@3.8 - CUDA 10 - opencv@2
-      addons:
-        apt:
-          update: true
-          sources:
-            - llvm-toolchain-precise-3.8
-          packages:
-            - libopencv-dev
-            - clang-3.8
-      env:
-        - additional_defines=""
-        - CUDACXX=/usr/local/cuda-10.0/bin/nvcc
-        - CUDA_PATH=/usr/local/cuda-10.0
-        - CUDA_TOOLKIT_ROOT_DIR=/usr/local/cuda-10.0
-        - LD_LIBRARY_PATH="/usr/local/cuda-10.0/lib64:/usr/local/cuda-10.0/lib64/stubs:${LD_LIBRARY_PATH}"
-        - MATRIX_EVAL="export CC=clang-3.8 && export CXX=clang++-3.8 && wget http://developer.download.nvidia.com/compute/cuda/repos/ubuntu1404/x86_64/cuda-repo-ubuntu1404_10.0.130-1_amd64.deb && sudo apt-key adv --fetch-keys http://developer.download.nvidia.com/compute/cuda/repos/ubuntu1404/x86_64/7fa2af80.pub && sudo dpkg -i cuda-repo-ubuntu1404_10.0.130-1_amd64.deb && wget http://developer.download.nvidia.com/compute/machine-learning/repos/ubuntu1404/x86_64/nvidia-machine-learning-repo-ubuntu1404_4.0-2_amd64.deb && sudo dpkg -i nvidia-machine-learning-repo-ubuntu1404_4.0-2_amd64.deb && sudo apt-get -y update && sudo apt-get install -y --no-install-recommends cuda-compiler-10-0 cuda-libraries-dev-10-0 cuda-driver-dev-10-0 cuda-cudart-dev-10-0 cuda-cublas-dev-10-0 cuda-curand-dev-10-0 && sudo apt-get install -y --no-install-recommends libcudnn7-dev && sudo ln -s /usr/local/cuda-10.0/lib64/stubs/libcuda.so /usr/local/cuda-10.0/lib64/stubs/libcuda.so.1"
-
-    - os: linux
-      compiler: clang
-      name: ubuntu 14.04 - clang@3.9 - CUDA 10 - opencv@2
-      addons:
-        apt:
-          update: true
-          sources:
-            - llvm-toolchain-trusty-3.9
-          packages:
-            - libopencv-dev
-            - clang-3.9
-      env:
-        - additional_defines=""
-        - CUDACXX=/usr/local/cuda-10.0/bin/nvcc
-        - CUDA_PATH=/usr/local/cuda-10.0
-        - CUDA_TOOLKIT_ROOT_DIR=/usr/local/cuda-10.0
-        - LD_LIBRARY_PATH="/usr/local/cuda-10.0/lib64:/usr/local/cuda-10.0/lib64/stubs:${LD_LIBRARY_PATH}"
-        - MATRIX_EVAL="export CC=clang-3.9 && export CXX=clang++-3.9 && wget http://developer.download.nvidia.com/compute/cuda/repos/ubuntu1404/x86_64/cuda-repo-ubuntu1404_10.0.130-1_amd64.deb && sudo apt-key adv --fetch-keys http://developer.download.nvidia.com/compute/cuda/repos/ubuntu1404/x86_64/7fa2af80.pub && sudo dpkg -i cuda-repo-ubuntu1404_10.0.130-1_amd64.deb && wget http://developer.download.nvidia.com/compute/machine-learning/repos/ubuntu1404/x86_64/nvidia-machine-learning-repo-ubuntu1404_4.0-2_amd64.deb && sudo dpkg -i nvidia-machine-learning-repo-ubuntu1404_4.0-2_amd64.deb && sudo apt-get -y update && sudo apt-get install -y --no-install-recommends cuda-compiler-10-0 cuda-libraries-dev-10-0 cuda-driver-dev-10-0 cuda-cudart-dev-10-0 cuda-cublas-dev-10-0 cuda-curand-dev-10-0 && sudo apt-get install -y --no-install-recommends libcudnn7-dev && sudo ln -s /usr/local/cuda-10.0/lib64/stubs/libcuda.so /usr/local/cuda-10.0/lib64/stubs/libcuda.so.1"
-
-    - os: linux
-      compiler: clang
-      name: ubuntu 14.04 - clang@4.0 - CUDA 10 - opencv@2
-      addons:
-        apt:
-          update: true
-          sources:
-            - llvm-toolchain-trusty-4.0
-          packages:
-            - libopencv-dev
-            - clang-4.0
-      env:
-        - additional_defines=""
-        - CUDACXX=/usr/local/cuda-10.0/bin/nvcc
-        - CUDA_PATH=/usr/local/cuda-10.0
-        - CUDA_TOOLKIT_ROOT_DIR=/usr/local/cuda-10.0
-        - LD_LIBRARY_PATH="/usr/local/cuda-10.0/lib64:/usr/local/cuda-10.0/lib64/stubs:${LD_LIBRARY_PATH}"
-        - MATRIX_EVAL="export CC=clang-4.0 && export CXX=clang++-4.0 && wget http://developer.download.nvidia.com/compute/cuda/repos/ubuntu1404/x86_64/cuda-repo-ubuntu1404_10.0.130-1_amd64.deb && sudo apt-key adv --fetch-keys http://developer.download.nvidia.com/compute/cuda/repos/ubuntu1404/x86_64/7fa2af80.pub && sudo dpkg -i cuda-repo-ubuntu1404_10.0.130-1_amd64.deb && wget http://developer.download.nvidia.com/compute/machine-learning/repos/ubuntu1404/x86_64/nvidia-machine-learning-repo-ubuntu1404_4.0-2_amd64.deb && sudo dpkg -i nvidia-machine-learning-repo-ubuntu1404_4.0-2_amd64.deb && sudo apt-get -y update && sudo apt-get install -y --no-install-recommends cuda-compiler-10-0 cuda-libraries-dev-10-0 cuda-driver-dev-10-0 cuda-cudart-dev-10-0 cuda-cublas-dev-10-0 cuda-curand-dev-10-0 && sudo apt-get install -y --no-install-recommends libcudnn7-dev && sudo ln -s /usr/local/cuda-10.0/lib64/stubs/libcuda.so /usr/local/cuda-10.0/lib64/stubs/libcuda.so.1"
-
-    - os: linux
-      compiler: clang
-      name: ubuntu 14.04 - clang@5.0 - CUDA 10 - opencv@2
-      addons:
-        apt:
-          update: true
-          sources:
-            - llvm-toolchain-trusty-5.0
-          packages:
-            - libopencv-dev
-            - clang-5.0
-      env:
-        - additional_defines=""
-        - CUDACXX=/usr/local/cuda-10.0/bin/nvcc
-        - CUDA_PATH=/usr/local/cuda-10.0
-        - CUDA_TOOLKIT_ROOT_DIR=/usr/local/cuda-10.0
-        - LD_LIBRARY_PATH="/usr/local/cuda-10.0/lib64:/usr/local/cuda-10.0/lib64/stubs:${LD_LIBRARY_PATH}"
-        - MATRIX_EVAL="export CC=clang-5.0 && export CXX=clang++-5.0 && wget http://developer.download.nvidia.com/compute/cuda/repos/ubuntu1404/x86_64/cuda-repo-ubuntu1404_10.0.130-1_amd64.deb && sudo apt-key adv --fetch-keys http://developer.download.nvidia.com/compute/cuda/repos/ubuntu1404/x86_64/7fa2af80.pub && sudo dpkg -i cuda-repo-ubuntu1404_10.0.130-1_amd64.deb && wget http://developer.download.nvidia.com/compute/machine-learning/repos/ubuntu1404/x86_64/nvidia-machine-learning-repo-ubuntu1404_4.0-2_amd64.deb && sudo dpkg -i nvidia-machine-learning-repo-ubuntu1404_4.0-2_amd64.deb && sudo apt-get -y update && sudo apt-get install -y --no-install-recommends cuda-compiler-10-0 cuda-libraries-dev-10-0 cuda-driver-dev-10-0 cuda-cudart-dev-10-0 cuda-cublas-dev-10-0 cuda-curand-dev-10-0 && sudo apt-get install -y --no-install-recommends libcudnn7-dev && sudo ln -s /usr/local/cuda-10.0/lib64/stubs/libcuda.so /usr/local/cuda-10.0/lib64/stubs/libcuda.so.1"
-
-    - os: linux
-      compiler: clang
-      name: ubuntu 14.04 - clang@6.0 - CUDA 10 - opencv@2
-      addons:
-        apt:
-          update: true
-          sources:
-            - llvm-toolchain-trusty-6.0
-            - ubuntu-toolchain-r-test
-          packages:
-            - libopencv-dev
-            - clang-6.0
-      env:
-        - additional_defines=""
-        - CUDACXX=/usr/local/cuda-10.0/bin/nvcc
-        - CUDA_PATH=/usr/local/cuda-10.0
-        - CUDA_TOOLKIT_ROOT_DIR=/usr/local/cuda-10.0
-        - LD_LIBRARY_PATH="/usr/local/cuda-10.0/lib64:/usr/local/cuda-10.0/lib64/stubs:${LD_LIBRARY_PATH}"
-        - MATRIX_EVAL="export CC=clang-6.0 && export CXX=clang++-6.0 && wget http://developer.download.nvidia.com/compute/cuda/repos/ubuntu1404/x86_64/cuda-repo-ubuntu1404_10.0.130-1_amd64.deb && sudo apt-key adv --fetch-keys http://developer.download.nvidia.com/compute/cuda/repos/ubuntu1404/x86_64/7fa2af80.pub && sudo dpkg -i cuda-repo-ubuntu1404_10.0.130-1_amd64.deb && wget http://developer.download.nvidia.com/compute/machine-learning/repos/ubuntu1404/x86_64/nvidia-machine-learning-repo-ubuntu1404_4.0-2_amd64.deb && sudo dpkg -i nvidia-machine-learning-repo-ubuntu1404_4.0-2_amd64.deb && sudo apt-get -y update && sudo apt-get install -y --no-install-recommends cuda-compiler-10-0 cuda-libraries-dev-10-0 cuda-driver-dev-10-0 cuda-cudart-dev-10-0 cuda-cublas-dev-10-0 cuda-curand-dev-10-0 && sudo apt-get install -y --no-install-recommends libcudnn7-dev && sudo ln -s /usr/local/cuda-10.0/lib64/stubs/libcuda.so /usr/local/cuda-10.0/lib64/stubs/libcuda.so.1"
-
-    - os: linux
-      compiler: gcc
-      name: ubuntu 14.04 - native gcc - CUDA 10 - opencv@2
+      dist: bionic
+      name: ubuntu 18.04 - clang - CUDA 10 - opencv@3
       addons:
         apt:
           update: true
@@ -821,109 +162,25 @@ matrix:
 
     - os: linux
       compiler: gcc
-      name: ubuntu 14.04 - gcc@4.9 - CUDA 10 - opencv@2
+      dist: bionic
+      name: ubuntu 18.04 - gcc - CUDA 10 - opencv@3
       addons:
         apt:
           update: true
-          sources:
-            - ubuntu-toolchain-r-test
           packages:
             - libopencv-dev
-            - g++-4.9
-      env:
-        - additional_defines=""
-        - CUDACXX=/usr/local/cuda-10.0/bin/nvcc
-        - CUDA_PATH=/usr/local/cuda-10.0
-        - CUDA_TOOLKIT_ROOT_DIR=/usr/local/cuda-10.0
-        - LD_LIBRARY_PATH="/usr/local/cuda-10.0/lib64:/usr/local/cuda-10.0/lib64/stubs:${LD_LIBRARY_PATH}"
-        - MATRIX_EVAL="export CC=gcc-4.9 && export CXX=g++-4.9 && wget http://developer.download.nvidia.com/compute/cuda/repos/ubuntu1404/x86_64/cuda-repo-ubuntu1404_10.0.130-1_amd64.deb && sudo apt-key adv --fetch-keys http://developer.download.nvidia.com/compute/cuda/repos/ubuntu1404/x86_64/7fa2af80.pub && sudo dpkg -i cuda-repo-ubuntu1404_10.0.130-1_amd64.deb && wget http://developer.download.nvidia.com/compute/machine-learning/repos/ubuntu1404/x86_64/nvidia-machine-learning-repo-ubuntu1404_4.0-2_amd64.deb && sudo dpkg -i nvidia-machine-learning-repo-ubuntu1404_4.0-2_amd64.deb && sudo apt-get -y update && sudo apt-get install -y --no-install-recommends cuda-compiler-10-0 cuda-libraries-dev-10-0 cuda-driver-dev-10-0 cuda-cudart-dev-10-0 cuda-cublas-dev-10-0 cuda-curand-dev-10-0 && sudo apt-get install -y --no-install-recommends libcudnn7-dev && sudo ln -s /usr/local/cuda-10.0/lib64/stubs/libcuda.so /usr/local/cuda-10.0/lib64/stubs/libcuda.so.1"
-
-    - os: linux
-      compiler: gcc
-      name: ubuntu 14.04 - gcc@5.0 - CUDA 10 - opencv@2
-      addons:
-        apt:
-          update: true
-          sources:
-            - ubuntu-toolchain-r-test
-          packages:
-            - libopencv-dev
-            - g++-5
-      env:
-        - additional_defines=""
-        - CUDACXX=/usr/local/cuda-10.0/bin/nvcc
-        - CUDA_PATH=/usr/local/cuda-10.0
-        - CUDA_TOOLKIT_ROOT_DIR=/usr/local/cuda-10.0
-        - LD_LIBRARY_PATH="/usr/local/cuda-10.0/lib64:/usr/local/cuda-10.0/lib64/stubs:${LD_LIBRARY_PATH}"
-        - MATRIX_EVAL="export CC=gcc-5 && export CXX=g++-5 && wget http://developer.download.nvidia.com/compute/cuda/repos/ubuntu1404/x86_64/cuda-repo-ubuntu1404_10.0.130-1_amd64.deb && sudo apt-key adv --fetch-keys http://developer.download.nvidia.com/compute/cuda/repos/ubuntu1404/x86_64/7fa2af80.pub && sudo dpkg -i cuda-repo-ubuntu1404_10.0.130-1_amd64.deb && wget http://developer.download.nvidia.com/compute/machine-learning/repos/ubuntu1404/x86_64/nvidia-machine-learning-repo-ubuntu1404_4.0-2_amd64.deb && sudo dpkg -i nvidia-machine-learning-repo-ubuntu1404_4.0-2_amd64.deb && sudo apt-get -y update && sudo apt-get install -y --no-install-recommends cuda-compiler-10-0 cuda-libraries-dev-10-0 cuda-driver-dev-10-0 cuda-cudart-dev-10-0 cuda-cublas-dev-10-0 cuda-curand-dev-10-0 && sudo apt-get install -y --no-install-recommends libcudnn7-dev && sudo ln -s /usr/local/cuda-10.0/lib64/stubs/libcuda.so /usr/local/cuda-10.0/lib64/stubs/libcuda.so.1"
-
-    - os: linux
-      compiler: gcc
-      name: ubuntu 14.04 - gcc@6.0 - CUDA 10 - opencv@2
-      addons:
-        apt:
-          update: true
-          sources:
-            - ubuntu-toolchain-r-test
-          packages:
-            - g++-6
-            - libopencv-dev
       env:
         - additional_defines=""
         - CUDACXX=/usr/local/cuda-10.0/bin/nvcc
         - CUDA_PATH=/usr/local/cuda-10.0
         - CUDA_TOOLKIT_ROOT_DIR=/usr/local/cuda-10.0
         - LD_LIBRARY_PATH="/usr/local/cuda-10.0/lib64:/usr/local/cuda-10.0/lib64/stubs:${LD_LIBRARY_PATH}"
-        - MATRIX_EVAL="export CC=gcc-6 && export CXX=g++-6 && wget http://developer.download.nvidia.com/compute/cuda/repos/ubuntu1404/x86_64/cuda-repo-ubuntu1404_10.0.130-1_amd64.deb && sudo apt-key adv --fetch-keys http://developer.download.nvidia.com/compute/cuda/repos/ubuntu1404/x86_64/7fa2af80.pub && sudo dpkg -i cuda-repo-ubuntu1404_10.0.130-1_amd64.deb && wget http://developer.download.nvidia.com/compute/machine-learning/repos/ubuntu1404/x86_64/nvidia-machine-learning-repo-ubuntu1404_4.0-2_amd64.deb && sudo dpkg -i nvidia-machine-learning-repo-ubuntu1404_4.0-2_amd64.deb && sudo apt-get -y update && sudo apt-get install -y --no-install-recommends cuda-compiler-10-0 cuda-libraries-dev-10-0 cuda-driver-dev-10-0 cuda-cudart-dev-10-0 cuda-cublas-dev-10-0 cuda-curand-dev-10-0 && sudo apt-get install -y --no-install-recommends libcudnn7-dev && sudo ln -s /usr/local/cuda-10.0/lib64/stubs/libcuda.so /usr/local/cuda-10.0/lib64/stubs/libcuda.so.1"
+        - MATRIX_EVAL="wget http://developer.download.nvidia.com/compute/cuda/repos/ubuntu1404/x86_64/cuda-repo-ubuntu1404_10.0.130-1_amd64.deb && sudo apt-key adv --fetch-keys http://developer.download.nvidia.com/compute/cuda/repos/ubuntu1404/x86_64/7fa2af80.pub && sudo dpkg -i cuda-repo-ubuntu1404_10.0.130-1_amd64.deb && wget http://developer.download.nvidia.com/compute/machine-learning/repos/ubuntu1404/x86_64/nvidia-machine-learning-repo-ubuntu1404_4.0-2_amd64.deb && sudo dpkg -i nvidia-machine-learning-repo-ubuntu1404_4.0-2_amd64.deb && sudo apt-get -y update && sudo apt-get install -y --no-install-recommends cuda-compiler-10-0 cuda-libraries-dev-10-0 cuda-driver-dev-10-0 cuda-cudart-dev-10-0 cuda-cublas-dev-10-0 cuda-curand-dev-10-0 && sudo apt-get install -y --no-install-recommends libcudnn7-dev && sudo ln -s /usr/local/cuda-10.0/lib64/stubs/libcuda.so /usr/local/cuda-10.0/lib64/stubs/libcuda.so.1"
 
     - os: linux
       compiler: gcc
-      name: ubuntu 14.04 - gcc@7.0 - CUDA 10 - opencv@2
-      addons:
-        apt:
-          update: true
-          sources:
-            - ubuntu-toolchain-r-test
-          packages:
-            - libopencv-dev
-            - g++-7
-      env:
-        - additional_defines=""
-        - CUDACXX=/usr/local/cuda-10.0/bin/nvcc
-        - CUDA_PATH=/usr/local/cuda-10.0
-        - CUDA_TOOLKIT_ROOT_DIR=/usr/local/cuda-10.0
-        - LD_LIBRARY_PATH="/usr/local/cuda-10.0/lib64:/usr/local/cuda-10.0/lib64/stubs:${LD_LIBRARY_PATH}"
-        - MATRIX_EVAL="export CC=gcc-7 && export CXX=g++-7 && wget http://developer.download.nvidia.com/compute/cuda/repos/ubuntu1404/x86_64/cuda-repo-ubuntu1404_10.0.130-1_amd64.deb && sudo apt-key adv --fetch-keys http://developer.download.nvidia.com/compute/cuda/repos/ubuntu1404/x86_64/7fa2af80.pub && sudo dpkg -i cuda-repo-ubuntu1404_10.0.130-1_amd64.deb && wget http://developer.download.nvidia.com/compute/machine-learning/repos/ubuntu1404/x86_64/nvidia-machine-learning-repo-ubuntu1404_4.0-2_amd64.deb && sudo dpkg -i nvidia-machine-learning-repo-ubuntu1404_4.0-2_amd64.deb && sudo apt-get -y update && sudo apt-get install -y --no-install-recommends cuda-compiler-10-0 cuda-libraries-dev-10-0 cuda-driver-dev-10-0 cuda-cudart-dev-10-0 cuda-cublas-dev-10-0 cuda-curand-dev-10-0 && sudo apt-get install -y --no-install-recommends libcudnn7-dev && sudo ln -s /usr/local/cuda-10.0/lib64/stubs/libcuda.so /usr/local/cuda-10.0/lib64/stubs/libcuda.so.1"
-
-    - os: linux
-      compiler: gcc
-      name: ubuntu 14.04 - gcc@8.0 - CUDA 10 - opencv@2
-      addons:
-        apt:
-          update: true
-          sources:
-            - ubuntu-toolchain-r-test
-          packages:
-            - libopencv-dev
-            - g++-8
-      env:
-        - additional_defines=""
-        - CUDACXX=/usr/local/cuda-10.0/bin/nvcc
-        - CUDA_PATH=/usr/local/cuda-10.0
-        - CUDA_TOOLKIT_ROOT_DIR=/usr/local/cuda-10.0
-        - LD_LIBRARY_PATH="/usr/local/cuda-10.0/lib64:/usr/local/cuda-10.0/lib64/stubs:${LD_LIBRARY_PATH}"
-        - MATRIX_EVAL="export CC=gcc-8 && export CXX=g++-8 && wget http://developer.download.nvidia.com/compute/cuda/repos/ubuntu1404/x86_64/cuda-repo-ubuntu1404_10.0.130-1_amd64.deb && sudo apt-key adv --fetch-keys http://developer.download.nvidia.com/compute/cuda/repos/ubuntu1404/x86_64/7fa2af80.pub && sudo dpkg -i cuda-repo-ubuntu1404_10.0.130-1_amd64.deb && wget http://developer.download.nvidia.com/compute/machine-learning/repos/ubuntu1404/x86_64/nvidia-machine-learning-repo-ubuntu1404_4.0-2_amd64.deb && sudo dpkg -i nvidia-machine-learning-repo-ubuntu1404_4.0-2_amd64.deb && sudo apt-get -y update && sudo apt-get install -y --no-install-recommends cuda-compiler-10-0 cuda-libraries-dev-10-0 cuda-driver-dev-10-0 cuda-cudart-dev-10-0 cuda-cublas-dev-10-0 cuda-curand-dev-10-0 && sudo apt-get install -y --no-install-recommends libcudnn7-dev && sudo ln -s /usr/local/cuda-10.0/lib64/stubs/libcuda.so /usr/local/cuda-10.0/lib64/stubs/libcuda.so.1"
-
-    - os: linux
-      compiler: gcc
-      name: ubuntu 14.04 - gcc@8.0 - CUDA 10 - vcpkg
-      addons:
-        apt:
-          update: true
-          sources:
-            - ubuntu-toolchain-r-test
-          packages:
-            - g++-8
+      dist: bionic
+      name: ubuntu 18.04 - gcc - CUDA 10 - vcpkg
       env:
         - additional_defines=""
         - USE_VCPKG=true
@@ -936,8 +193,8 @@ matrix:
 
 #  allow_failures:
 #    - name: macOS - vcpkg
-#    - name: ubuntu 14.04 - gcc@8.0 - vcpkg
-#    - name: ubuntu 14.04 - gcc@8.0 - CUDA 10 - vcpkg
+#    - name: ubuntu 18.04 - gcc - vcpkg
+#    - name: ubuntu 18.04 - gcc - CUDA 10 - vcpkg
 
 before_install:
   - travis_retry eval "${MATRIX_EVAL}"