In this tutorial we will learn how to flatten a nested JSON object using the flat library.
Continue reading “JavaScript: flattening a JSON”Python pyzbar: Detecting and decoding barcode
In this tutorial we will check how to detect and decode a barcode in an image. For this we will be using the pyzbar library.
Continue reading “Python pyzbar: Detecting and decoding barcode”Python OpenCV: Detecting and Decoding a QRCode
In this tutorial we will learn how to detect and decode a QR Code on an image, using Python and OpenCV.
Continue reading “Python OpenCV: Detecting and Decoding a QRCode”Python OpenCV: Drawing lines on image
In this tutorial we are going to learn how to draw lines in an image, using Python and OpenCV.
Continue reading “Python OpenCV: Drawing lines on image”ESP32 XML: Obtaining the value of an attribute
In this tutorial we will learn how to parse a XML document and obtain the value of an attribute in one of the elements. The tests from this tutorial were done using a DFRobot’s ESP32 module integrated in a ESP32 development board.
Continue reading “ESP32 XML: Obtaining the value of an attribute”Python OpenCV: Getting region of interest
In this tutorial we will learn how to get and display a region of interest from an image, using Python and OpenCV.
Continue reading “Python OpenCV: Getting region of interest”Python OpenCV: Getting image dimensions
In this tutorial we will learn how to obtain the dimensions (height and width) of an image read with OpenCV, using Python.
Continue reading “Python OpenCV: Getting image dimensions”ESP32 XML: navigating through a list of elements
In this tutorial we will learn how to parse a XML document and navigate through a list of elements, printing their values. We will be testing this tutorial on the ESP32, using the Arduino core and the TinyXML-2 library. The tests from this tutorial were done using a DFRobot’s ESP32 module integrated in a ESP32 development board.
Continue reading “ESP32 XML: navigating through a list of elements”ESP32 Arduino: Parsing XML
In this tutorial we will learn how to get started parsing XML with the ESP32, using the Arduino core and the tinyxml2 library. The tests from this tutorial were done using a DFRobot’s ESP32 module integrated in a ESP32 development board.
Continue reading “ESP32 Arduino: Parsing XML”Node.js OpenCV: Converting an image to grey scale
In this tutorial we will learn how to convert an image to grey scale, using the opencv4nodejs package.
Continue reading “Node.js OpenCV: Converting an image to grey scale”