In this chapter, we learned how to use the ofxOpenCv addon for finding motion areas in the video, and how to correct perspective distortions for restoring images of planar rectangular surfaces. Also, we saw how to detect bright objects in the image and mark their centers. Finally, we learned to use native OpenCV functions for computing optical flow. We also covered how to use optical flow for video morphing.

In the next chapter, we will consider how to use depth cameras. Compared to ordinary cameras, depth cameras let you analyze real scenes easily and with more stability.