PUBLIC MARKS with tags html5 & javascript

QuaggaJS is a barcode-scanner entirely written in JavaScript supporting real- time localization and decoding of various types of barcodes such as EAN, CODE 128, CODE 39, EAN 8, UPC-A, UPC-C and CODABAR. The library is also capable of using getUserMedia to get direct access to the user's camera stream. Although the code relies on heavy image-processing even recent smartphones are capable of locating and decoding barcodes in real-time.

The beautiful, open source front-end SDK for developing hybrid mobile apps with HTML5.

but some of the parts of the image are specifically #ff0000 and I would like to be able to replace it by some other color, a custom user defined color.

A few years ago, I wrote a little ActionScript 3 library called MicRecorder, which allowed you to record the microphone input and export it to a .WAV file. Very simple, but pretty handy. The other day I thought it would be cool to port it to JavaScript. I realized quickly that it is not as easy. In Flash, the SampleDataEvent directly provides the byte stream  PCM samples) from the microphone. With getUserMedia, the Web Audio APIs are required to extract the samples. Note that getUserMedia and Web Audio are not broadly supported yet, but it is coming. Firefox has also landed Web Audio recently, which is great news.

A JavaScript library providing multiple simultaneous, stable and resumable uploads via the HTML5 File API

This keyboard works by generating Waveform Audio file data dynamically, converting it into a base64-encoded dataURI, and subsequently playing it using the HTML5 audio element from within your web browser. Basically, we're using math to make sounds. Hooray. This is different than other HTML5 pianos in that it doesn't use pre-recorded audio files, and that it's a little bit more refined.

Canvas-based UI with visualization options. Note: Spectrum/EQ visualizations

Canvas-based UI with visualization options.

Canvas-based UI with visualization options. Note: Spectrum/EQ visualizations

Recently, I have seen a couple different JavaScript face detection demos based on the HTML5 getUserMedia API. I even made my own face detection demo based on the HTML5 video tag. Beyond human faces, we also have face detection for cats in JavaScript, nudity detection, and much more with js-objectdetect, a JavaScript library for real-time object detection.

Why would you use the web for motion tracking? Simple. HTML5 Canvas is exciting. Javascript is (pretty) cool. Combined with a lazy afternoon, we can create an ultra simple hand motion tracking and colour recognition system.