This is part of a Processing project I’m currently working on. This sketch allows the user to select colours from webcam input. The input is then analysed and a rectangle is drawn around all pixels close to the chosen colour. Up to 2 colours can be used for this sketch. This is similar to the getColorBoundsRect() method in the BitmapData class in Flash.
Click here to see the video on Vimeo
You can download the source code below:
colour_detection.pde, CoordsCalc.pde
Be aware though that in order to use it you should be in a well lit room with a good quality webcam. You might also need to fine tune your webcam settings. To select a colour, place your object in the red box in the bottom right hand corner of the frame and press 1 or 2.
Keys:
p to view the rectangles
1 to select the first colour
2 to select the second colour
0 to reset colours
