Invention Grant
- Patent Title: Low light video image stabilization strength modulation
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Application No.: US14467998Application Date: 2014-08-25
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Publication No.: US09674438B2Publication Date: 2017-06-06
- Inventor: Jianping Zhou , Sebastien X. Beysserie
- Applicant: Apple Inc.
- Applicant Address: US CA Cupertino
- Assignee: Apple Inc.
- Current Assignee: Apple Inc.
- Current Assignee Address: US CA Cupertino
- Agency: Blank Rome LLP
- Main IPC: H04N5/232
- IPC: H04N5/232

Abstract:
Techniques to improve a digital image capture device's ability to stabilize a video stream in low light capture conditions are presented. In general, techniques are disclosed for stabilizing video images using an overscan region and a look-ahead technique enabled by buffering a number of video input frames before generating a first stabilized video output frame. More particularly, techniques are disclosed for buffering an initial number of input frames so that a “current” frame can use time stamped image capture device motion data from both “past” and “future” frames to adjust the strength of a stabilization metric value so as to keep the current frame within its overscan. The calculated adjustments to the strength of the stabilization metric value for a particular frame may be limited to a target max strength value that is determined based, at least in part, on an estimated amount of motion blur in the current frame.
Public/Granted literature
- US20160006935A1 Low Light Video Image Stabilization Strength Modulation Public/Granted day:2016-01-07
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