Color Filter: Red Blue Green Yellow White Black Hide Transparency
I created a simple invisibility effect using color filters and a background video. The color filters hide the colors making holes in the video. Displaying a background video fills in the wholes with another image. To create the effect you need to show a video and a live webcam view at the same time. You could record a background video, load it and play it in the background while you add a color filter to the live webcam display.
In the picture below I am using a bright red towel as an invisibility cloak. To make an x-ray vision effect show what is behind or underneath it in the background video. For example you could make a wall invisible to show what was on the other side. The program was made for and tested on a laptop. It may not work on your phone. If you block the webcam then you will need to refresh the page to allow the program to use your webcam. I will be making some improvements to the program.