ofxWaveformMonitor
I had to create a live green screen keyer for a project. As a motion designer i know that the greenscreen has to been lighted pretty well. So i programmed a waveform monitor to check the brightness of the incoming video signal and see how the screen is lighted up. These two pictures show the example with an still image and with the live webcam. It is possible to setup the resolution of the calculates size to reduce the cpu usage.
The add-on can be found on Github.
