What technique makes a rotation transformation appear more realistic?

Motion blur is a technique used in animation and video production to create a more realistic appearance during movement, particularly with transformations like rotation. When an object rotates quickly, the human eye perceives a blur rather than a crisp, clear image of the object in each position. This is similar to how we experience motion in the real world; fast movements create a blur effect that makes the motion appear fluid and natural.

In the context of a rotation transformation, applying motion blur can enhance the perception of speed and contribute to the overall realism of the animation. By blurring the frames during rotation, you effectively simulate the way objects behave under fast motion, thereby making the animation feel more dynamic and lifelike.

The other techniques mentioned, such as keyframing, layer masking, and time stretching, serve different purposes in animation. Keyframing is essential for defining specific points of transformation but does not inherently add realism to the motion itself. Layer masking allows for the control of visibility of certain elements but does not influence how movement is perceived. Time stretching alters the duration of an animation, which can change the pacing but does not directly enhance the realistic quality of the motion as motion blur does. Thus, the application of motion blur is key to achieving a more believable rotation transformation