This data is then used to create a tracking data that can be used to composite digital elements into the scene. Planar tracking works by analyzing the pixels in the selected region of the image, looking for patterns and features that can be used to accurately determine the position and motion of the surface over time. For example, a common use of planar tracking is to replace a computer screen or billboard in a video with a custom image or animation. This technique is used in a variety of applications, such as adding visual effects or graphics to live-action footage, or replacing a portion of an image with a different element. It involves analyzing the movement of a selected region of the image, such as a flat surface or pattern, and using that data to create a tracking data that can be used to composite digital elements into the scene. Planar tracking is a technique used in CGI (computer-generated imagery) to accurately track the motion and position of an object within a 2D plane, typically within a video clip.
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