Video processing system and method for automatic enhancement of digital video
View Patent ↗An automatic video enhancement system and method for automatically enhancing video. The automated video enhancement method uses frame-to-frame motion estimation as the basis of the video enhancement. Motion estimation includes the computation of global motion (such as camera motion) and the computation of local motion (such as pixel motion). The automated video enhancement method includes generating global alignment transforms, generating optic flow vectors, and using these global alignment transforms and optic flow vectors to enhance the video. The invention also includes video processing and enhancement techniques that use the frame-to-frame motion estimation. These techniques include a deinterlace process, a denoise process, and a warp stabilization process that performs both damped and locked stabilization.
1. A method for performing locked stabilization on a video frame sequence captured by a camera, comprising:
selecting a video frame from the video frame sequence to use as a reference frame;
computing frame pairwise global motion between each of the video frames in the video frame sequence;
calculating an affine transformation from each video frame in the video frame sequence to the referenced frame; and
removing pixels in a video frame discovered by the affine transformation.
2. The method as set forth in claim 1 , further comprising replacing the removed pixels in a video frame by building a mosaic.
3. The method as set forth in claim 2 , wherein building a mosaic further comprises borrowing pixels that are similar to the removed pixels from frames that neighbor the video frame containing the removed pixels.