golang.pngGolang : Qt image viewer example

This is the Qt version of the previous tutorial on how to create a simple image viewer with….... read more

golang.pngGolang : Detect number of faces or vehicles in a photo

This is a short tutorial on how to use OpenCV to detect the number of faces in an image. Knowing….... read more

golang.pngGolang : Calculate half life decay example

My wife is a chemistry lecturer and she was showing her student how to calculate half-life decay of an element.….... read more

golang.pngGolang : Play .WAV file from command line


You have recorded your voice on a .wav file with the previous tutorial on how to activate….... read more

golang.pngGolang : ffmpeg with os/exec.Command() returns non-zero status


You want to use ffmpeg with os/exec.Command() and Run() to create your video files.

However, it keeps bombing….... read more

golang.pngGolang : Merge video(OpenCV) and audio(PortAudio) into a mp4 file

The previous Golang tutorials cover on how to capture image frames from a web camera with OpenCV and….... read more

golang.pngGolang : Detect sample rate, channels or latency with PortAudio


You want to detect the sample rate, channels or latency of the input and output devices attached to your….... read more

golang.pngGolang : Record voice(audio) from microphone to .WAV file


You need to activate your microphone, record your voice and save the data into a .wav file from command….... read more

golang.pngGolang : Surveillance with web camera and OpenCV

Times are bad and the economy in Malaysia is not doing well. People in my neighborhood are worried about the….... read more

javascript.jpgJavascript : Access JSON data example


You have a JSON string such as below and you want to access the data individually via Javascript. How….... read more

golang.pngGolang : Command line ticker to show work in progress


Your command line application is crunching data and you want your program to show the user that it is….... read more

golang.pngGolang : Activate web camera and broadcast out base64 encoded images

For this tutorial, we will learn how to activate web camera with Golang + OpenCV and stream out base64 encoded….... read more