Display camera frame

vendor/gocv.io/x/gocv/travis_build_opencv.sh

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+#!/bin/bash
+set -eux -o pipefail
+
+OPENCV_VERSION=${OPENCV_VERSION:-4.2.0}
+
+#GRAPHICAL=ON
+GRAPHICAL=${GRAPHICAL:-OFF}
+
+# OpenCV looks for libjpeg in /usr/lib/libjpeg.so, for some reason. However,
+# it does not seem to be there in 14.04. Create a link
+
+mkdir -p $HOME/usr/lib
+
+if [[ ! -f "$HOME/usr/lib/libjpeg.so" ]]; then
+  ln -s /usr/lib/x86_64-linux-gnu/libjpeg.so $HOME/usr/lib/libjpeg.so
+fi
+
+# Same for libpng.so
+
+if [[ ! -f "$HOME/usr/lib/libpng.so" ]]; then
+  ln -s /usr/lib/x86_64-linux-gnu/libpng.so $HOME/usr/lib/libpng.so
+fi
+
+# Build OpenCV
+if [[ ! -e "$HOME/usr/installed-${OPENCV_VERSION}" ]]; then
+TMP=$(mktemp -d)
+if [[ ! -d "opencv-${OPENCV_VERSION}/build" ]]; then
+  curl -sL https://github.com/opencv/opencv/archive/${OPENCV_VERSION}.zip > ${TMP}/opencv.zip
+  unzip -q ${TMP}/opencv.zip
+  mkdir opencv-${OPENCV_VERSION}/build
+  rm ${TMP}/opencv.zip
+fi
+
+if [[ ! -d "opencv_contrib-${OPENCV_VERSION}/modules" ]]; then
+   curl -sL https://github.com/opencv/opencv_contrib/archive/${OPENCV_VERSION}.zip > ${TMP}/opencv-contrib.zip
+   unzip -q ${TMP}/opencv-contrib.zip
+   rm ${TMP}/opencv-contrib.zip
+fi
+rmdir ${TMP}
+
+cd opencv-${OPENCV_VERSION}/build
+cmake -D WITH_IPP=${GRAPHICAL} \
+      -D WITH_OPENGL=${GRAPHICAL} \
+      -D WITH_QT=${GRAPHICAL} \
+      -D BUILD_EXAMPLES=OFF \
+      -D BUILD_TESTS=OFF \
+      -D BUILD_PERF_TESTS=OFF  \
+      -D BUILD_opencv_java=OFF \
+      -D BUILD_opencv_python=OFF \
+      -D BUILD_opencv_python2=OFF \
+      -D BUILD_opencv_python3=OFF \
+      -D OPENCV_GENERATE_PKGCONFIG=ON \
+      -D CMAKE_INSTALL_PREFIX=$HOME/usr \
+      -D OPENCV_ENABLE_NONFREE=ON \
+      -D OPENCV_EXTRA_MODULES_PATH=../../opencv_contrib-${OPENCV_VERSION}/modules ..
+make -j8
+make install && touch $HOME/usr/installed-${OPENCV_VERSION}
+
+# caffe test data
+if [[ ! -d "${HOME}/testdata" ]]; then
+  mkdir ${HOME}/testdata
+fi
+
+#if [[ ! -f "${HOME}/testdata/bvlc_googlenet.prototxt" ]]; then
+  curl -sL https://raw.githubusercontent.com/opencv/opencv_extra/master/testdata/dnn/bvlc_googlenet.prototxt > ${HOME}/testdata/bvlc_googlenet.prototxt
+#fi
+
+#if [[ ! -f "${HOME}/testdata/bvlc_googlenet.caffemodel" ]]; then
+  curl -sL http://dl.caffe.berkeleyvision.org/bvlc_googlenet.caffemodel > ${HOME}/testdata/bvlc_googlenet.caffemodel
+#fi
+
+#if [[ ! -f "${HOME}/testdata/tensorflow_inception_graph.pb" ]]; then
+  curl -sL https://storage.googleapis.com/download.tensorflow.org/models/inception5h.zip > ${HOME}/testdata/inception5h.zip
+  unzip -o ${HOME}/testdata/inception5h.zip tensorflow_inception_graph.pb -d ${HOME}/testdata
+#fi
+
+cd ../..
+touch $HOME/fresh-cache
+fi