Video anti-shake method, system and shooting terminal suitable for mobile time-lapse photography
A time-lapse photography, mobile technology, applied in the field of video processing, can solve the problems of zero drift, delay, large-scale jitter anti-shake effect is not ideal, and achieve the effect of significant anti-shake effect and high robustness.
Active Publication Date: 2019-06-11
XIAMEN MEITUZHIJIA TECH
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Problems solved by technology
This gyroscope-based anti-shake method has high requirements on hardware, and is prone to zero drift, delay, etc., and the anti-shake effect for large-scale jitter is not ideal
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[0039] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0040] like figure 1 Shown, a kind of video stabilization method applicable to mobile time-lapse photography of the present invention, it comprises the following steps:
[0041] 10. Extract the ...
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The invention discloses a video anti-shake method, system and shooting terminal suitable for mobile time-lapse photography. It performs key point extraction and key point matching on the image frame of the video to be processed, and according to the result of the key point matching Calculate the homography matrix between the adjacent image frames, and calculate the motion trajectory of the video to be processed according to the homography matrix of the adjacent image frames, and then extract the video to be processed according to the motion trajectory The key frame in the image frame of the key frame is smoothed to obtain a stable video by smoothing the homography matrix of the key frame. It only uses the video image information and combines the key point information of the image and the homography relationship to perform frame extraction and smoothing. It does not depend on hardware, the algorithm has high robustness, and the anti-shake effect is remarkable. It is especially suitable for mobile time-lapse photography with large jitter, and is also suitable for anti-shake processing of ordinary videos.
Description
technical field [0001] The invention relates to the technical field of video processing, in particular to a video anti-shake method suitable for mobile time-lapse photography and a system and a shooting terminal applying the method. Background technique [0002] Mobile time-lapse photography is a branch of time-lapse photography. It is a photography method that expresses rapid changes in shooting targets. It has a strong time compression ability and can compress long-term changes in things in a short period of time. Unlike traditional time-lapse photography that uses tripods and other equipment to fix the camera, during the shooting process of mobile time-lapse photography, cameras and other shooting equipment are mostly hand-held and follow the photographer. Due to the instability of handheld photography and the process of compressing video time, irregular high-frequency jitter of the photographic target will be caused. In order to improve the shooting effect of mobile tim...
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IPC IPC(8): H04N5/232
CPCH04N23/681H04N23/6811
Inventor 余清洲傅松林许清泉张伟
Owner XIAMEN MEITUZHIJIA TECH