golang.pngGolang : Pad file extension automagically


You want to pad file type extension to a given filename string without prompting your program users to do….... read more

golang.pngGolang : Serving HTTP and Websocket from different ports in a program example


For some reason you want to split the port use by your program to serve HTTP and Web-socket traffic.….... read more

golang.pngGolang : Calculate BMI and risk category

I'm building a healthcare IoT device that will ask a person about their weight and report back the risk category.….... read more

golang.pngGolang : Calculate diameter, circumference, area, sphere surface and volume

Let's travel back to high school for a while and learn some physics. We will learn how to calculate a….... read more

golang.pngGolang : Find change in a combination of coins example

If you are planning to build a vending machine, self-service cashier machine or any machines that deal with money. Chances….... read more

golang.pngGolang : Handling image beyond OpenCV video capture boundary

One of the problems that I was unable to solve at the previous tutorial on how to put….... read more

golang.pngGolang : Print UTF-8 fonts on image example


You need to write UTF-8 characters such as Icelandic,Chinese, Japanese, Korean, Russian or symbols like © Ø ® ß….... read more

golang.pngGolang : Changing a RGBA image number of channels with OpenCV


Golang image packages deal with RGBA ( 4 channels ) and OpenCV deals with BGR ( 3 channels ).….... read more

golang.pngGolang : Put UTF8 text on OpenCV video capture image frame

The HERSHEY font use by OpenCV does not support UTF-8 characters. If you use my previous tutorial on how to….... read more

golang.pngGolang : Set image canvas or background to transparent

Putting this down here for my own future reference. Maybe useful to you too. Anyway, basically what I need is….... read more

golang.pngGolang : Add text to image and get OpenCV's X, Y co-ordinates example

Building on from the previous OpenCV-GTK-GUI application tutorial. For this tutorial, I need to know where to position….... read more

golang.pngGolang : Another camera capture GUI application with GTK and OpenCV

For those that prefer to use GTK over Qt, this is another tutorial/example to show you how to .... read more