Method and device for stabilizing video sequences, related video-capture apparatus and computer-program product

摘要

According to an embodiment, a sequence of video frames as produced in a video-capture apparatus such as a video camera is stabilized against hand shaking or vibration by:—subjecting a pair of frames in the sequence to feature extraction and matching to produce a set of matched features;—subjecting the set of matched features to an outlier removal step; and—generating stabilized frames via motion-model estimation based on features resulting from outlier removal. Motion-model estimation is performed based on matched features having passed a zone-of-interest test confirmative that the matched features passing the test are distributed over a plurality of zones across the frames.

主权项

1. An apparatus, comprising:
a comparator configured to identify
features of a first image, andfeatures of a second image that match the features of the first image, wherein the features of the second image that match the features of the first image define a set of matched features; a stabilizer configured to generate stabilized frames through motion model estimation based on inlier features having passed a zone-of-interest test that confirms that the inlier features are distributed over a plurality of zones across the first and second images; and an outlier remover configured:
to identify as an outlier feature any outlying feature of the first and second images identified by the comparator;to identify as an inlier feature any other feature of the first and second images identified by the comparator; andto provide the inlier features to the stabilizer.