Interactively Stylizing Camera Motion

Figure 1. A user can modify camera motion style in real time by manipulating sliders which modify the power spectra for each camera motion parameter. The UI shows a) the input video with the current stylized motion applied and b) the video aligned to the global canvas. There are sub-panels for the motion parameters: x and y translation, rotation, and scale. Each sub-panel has c) a plot of the original and stylized motion and d) power spectrum and e) a 10-band equalizer (EQ). In the motion plot, the bold line is the original path and the finer gray line is the stylized path. Here we have dampened the mid and low frequencies for the x and y motion and amplified the mid frequencies for rotation. Movie directors and cinematographers impart style onto video using techniques that are learned through years of expe-rience: camera movement, framing, color, lighting, etc. With-out this experience and expensive equipment, it is very diffi-cult to control stylistic aspects of a video. We introduce a novel approach for post-hoc editing of one specific aspect of cinematography – camera motion style – via an equalizer-like set of controls that manipulates the power spectra of a video’s apparent motion path. We explore free manipulation of ap-parent camera motion as well as the transfer of motion styles from an example video to a new video to create a wide range of stylistic variations. We report on a user study confirming the ability of non-expert users to create motion styles