Method for electronic image stabilization of video on mobile terminal

An electronic image stabilization and mobile terminal technology, applied in the field of video processing, can solve the problems of general rapidity and accuracy, errors in motion vector estimation, and high computational cost of motion vector estimation. Complexity and difficulty, good theoretical basis and effect of practical value

Inactive Publication Date: 2015-09-09
HUAZHONG UNIV OF SCI & TECH
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  • Abstract
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Problems solved by technology

This method of estimating frame motion vectors using algorithms is not suitable for porting to mobile terminals with relatively small computing power due to the high computational cost of motion vector estimation. At the same time, mismatching will cause errors in motion vector estimation, etc., and the speed and accuracy are average.

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  • Method for electronic image stabilization of video on mobile terminal
  • Method for electronic image stabilization of video on mobile terminal
  • Method for electronic image stabilization of video on mobile terminal

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Embodiment Construction

[0031] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and 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.

[0032] The invention relates to an electronic image stabilization method for a mobile terminal, which is suitable for image stabilization of blurred video frames between video frames caused by unconscious jitter in the process of video collection, and provides guarantee for post-processing of videos and information acquisition.

[0033] The invention provides a video electronic image stabilization method based on a built-in attitude sensor of a mobile terminal, which uses calculation to directly obtain motion vectors, avoids the complexity and difficulty of estimating motion vectors using algorithms...

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Abstract

The invention discloses a method for electronic image stabilization of a video on a mobile terminal. During a process of camera shooting of the mobile terminal, when a camera generates unconscious jitter due to interference, motion data of the camera is computed through data obtained by utilizing an attitude sensor in the mobile terminal, and the data is converted to obtain a motion vector of each frame of image, and after each frame of image is subjected to translation and rotation operations according to the motion vector, each frame of image is output and displayed, so that an effect of image stabilization is realized. The motion vector is directly obtained by the internal attitude sensor of the mobile terminal, so that a motion estimation link, which has larger cost and an error caused by error matching when the common electronic image stabilization obtains the motion vector, is eliminated, and thus the method has higher real-time performance and stronger anti-jamming capability.

Description

technical field [0001] The invention belongs to the technical field of video processing, and more particularly relates to an electronic image stabilization method for mobile terminal video. Background technique [0002] Image stabilization technology is widely used in military field, civil surveying and mapping and photography system. Compared with other information forms, images have the characteristics of more intuitive information and rich information content, but because the imaging system is affected by the attitude change or vibration of the carrier when it is working, the obtained image information is blurred and unstable, which greatly limits the validity of image information. The image stabilization technology can eliminate or reduce the influence of the movement of the camera carrier on the image, and greatly improve the quality of the acquired image information. Video stabilization generally includes the following steps: video frame preprocessing, motion estimat...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/21H04N5/14
Inventor 马杰胡芳禹
Owner HUAZHONG UNIV OF SCI & TECH
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