Video Processing¶
Video Processing Fundamentals¶
Video is a sequence of image frames over time — \(I(x, y, t)\). Video processing extends image processing to the temporal domain, enabling motion analysis, temporal filtering, and dynamic scene manipulation.
Video Textures¶
Video textures create infinitely looping video by finding visually similar frames and creating seamless transitions:
Compute frame-to-frame similarity (e.g., sum of squared differences)
Build a transition cost matrix
Find low-cost transition points that allow seamless looping
Randomly sample transitions to create non-repeating, infinite-length video
Video Stabilization¶
Video stabilization removes unwanted camera shake while preserving intentional motion:
Estimate frame-to-frame camera motion (translation, rotation, affine)
Smooth the estimated motion trajectory (e.g., moving average, L1-optimal smoothing)
Apply corrective warps to each frame to follow the smoothed trajectory
Crop borders to remove artifacts from warping
Panoramic Video Textures¶
Combines panoramic stitching with video textures to create wide field-of-view looping video from panning camera footage.