This patch makes use of two patches we have seen in class. One is the patch where we combined two video signals by overlaying one on top of another; the other one is the patch where a delayed video played next to the real video. By adding a RGB analyzer, I made a patch that has a time shifted frame overlayed on top of the real-time video, where the particular time frame was chosen from the past with the RGB values of the current frame. By moving around and messing with my desk light, the RGB values changes and random frames flicker on the screen. If I try to stay still, one frame will be chosen and shows as a stilled image.
In the video, I first stayed still in a few positions, producing the same average RGB values over a period of time and hence one frame was held still each time. Then I started moving around a bit more and putting my hand on and off the webcam, producing a continuous flashing of frames from the past. I call this assignment d/dt because a video is only produced when there are changes in the RGB values; otherwise, it is more like a plain image.