Invention Grant
- Patent Title: Methods and systems for video retargeting using motion saliency
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Application No.: US13419231Application Date: 2012-03-13
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Publication No.: US08594488B1Publication Date: 2013-11-26
- Inventor: Matthias Grundmann , Vivek Kwatra
- Applicant: Matthias Grundmann , Vivek Kwatra
- Applicant Address: US CA Mountain View
- Assignee: Google Inc.
- Current Assignee: Google Inc.
- Current Assignee Address: US CA Mountain View
- Agency: McDonnell Boehnen Hulbert and Berghoff
- Main IPC: G11B27/00
- IPC: G11B27/00 ; H04N5/93 ; H04N9/80 ; H04N5/225 ; H04N5/228 ; H04N5/14 ; H04N9/64

Abstract:
Methods and systems for video retargeting and view selection using motion saliency are described. Salient features in multiple videos may be extracted. Each video may be retargeted by modifying the video to preserve the salient features. A crop path may be estimated and applied to a video to retarget each video and generate a modified video preserving the salient features. An action score may be assigned to portions or frames of each modified video to represent motion content in the modified video. Selecting a view from one of the given modified videos may be formulated as an optimization subject to constraints. An objective function for the optimization may include maximizing the action score. This optimization may also be subject to constraints to take into consideration optimal transitioning from a view from a given video to another view from another given video, for example.
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