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--- iot:spz [2022/01/20 15:55] – Jan Forman
+++ iot:spz [2022/01/20 15:55] (current) – Jan Forman
@@ Line 1: / Line 1: @@
+====== OpenALPR (get image) ======
+<code>
+while [ 1 ]
+do
+wget --quiet http://@192.168.1.1/Streaming/channels/1/picture --output-document=/tmp/snapshot.jpg
+status=$(alpr -c eu -p cz -n 5 -j /tmp/snapshot.jpg | grep confidence)
+if [ "$status" != "" ]; then
+curl --header "Content-Type: application/json" --request POST --data "$status"  https://{endpoint}
+fi
+sleep 2
+done</code>
+<code>
+#!/bin/bash
+nohup /opt/spz/spz.sh &>/dev/null &
+</code>
+====== Install OpenALPR ======
+<code>
+sudo add-apt-repository ppa:xapienz/curl34
+sudo apt-get update
+sudo apt install -y libtool m4 automake cmake pkg-config libopencv-dev liblog4cplus-1.1-9 liblog4cplus-dev build-essential libcurl4 libcurl4-openssl-dev beanstalkd
+cd /usr/src
+wget https://github.com/DanBloomberg/leptonica/archive/1.82.0.tar.gz
+tar -xvzf 1.82.0.tar.gz
+cd leptonica-1.82.0
+./autogen.sh
+./configure
+sudo make
+sudo make install
+cd /usr/src
+wget https://github.com/tesseract-ocr/tesseract/archive/4.1.3.tar.gz
+tar -xvzf 4.1.3.tar.gz
+cd tesseract-4.1.3/
+./autogen.sh
+./configure --enable-debug LDFLAGS="-L/usr/local/lib" CFLAGS="-I/usr/local/include"
+sudo make
+sudo make install
+sudo ldconfig
+tesseract --version
+cd /usr/src
+git clone https://github.com/openalpr/openalpr.git
+cd openalpr/src
+mkdir build
+cd build
+cmake -DCMAKE_INSTALL_PREFIX:PATH=/usr -DCMAKE_INSTALL_SYSCONFDIR:PATH=/etc ..
+make && sudo make install
+</code>
+===== openalpr.conf =====
+<code>
+contrast_detection_threshold = 0.3
+skip_detection = 0
+max_plate_width_percent = 100
+max_plate_height_percent = 100
+</code>
+===== alrpd.conf =====
+<code>
+[daemon]
+country = eu
+pattern = cz
+stream = rtsp://CAMERA_IP/Streaming/channels/4
+site_id = plzen
+company_id = company
+store_plates = 0
+store_plates_location = /opt/
+analysis_threads = 2
+topn = 1
+upload_data = 1
+upload_address = https://JSON_POST_URL
+</code>

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