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Digital video image-stabilizing method based on block motion estimation

A digital video and motion estimation technology, applied in the field of video processing, can solve problems such as poor video effect, and achieve the effect of solving the aliasing effect, accurate global motion parameters, and good de-jitter effect.

Active Publication Date: 2018-03-02
HOHAI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, it can only process translational motion. When dealing with multi-dimensional motions such as rotation and zooming, the resulting video effect is poor.

Method used

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  • Digital video image-stabilizing method based on block motion estimation
  • Digital video image-stabilizing method based on block motion estimation
  • Digital video image-stabilizing method based on block motion estimation

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Embodiment Construction

[0028] Below in conjunction with specific embodiment, further illustrate the present invention, should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention, after having read the present invention, those skilled in the art will understand various equivalent forms of the present invention All modifications fall within the scope defined by the appended claims of the present application.

[0029] Such as figure 1 As shown, it is an execution flow chart of the video stabilization method based on block motion estimation in the present invention. The method includes the following steps:

[0030] Block motion estimation: In the process of performing motion estimation, firstly, the first frame of the video sequence is used as a reference frame, stored in the reference buffer 1, down-sampled from the second frame of the video sequence, and a thumbnail of the corresponding image is genera...

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Abstract

The invention discloses a digital video image-stabilizing method based on block motion estimation. The method comprises the following steps: firstly taking a first frame of a video sequence as a reference frame to store at a reference buffer zone 1, starting downsampling from the second frame of the video sequence to generate a thumbnail corresponding to an image, storing the image at a referencebuffer zone 0; and then acquiring a local motion parameter through edge detection, and selecting a block with enough texture information for block matching, performing module motion searching, establishing a linear parameter system by using a motion searching result and an adopted similar motion model, and solving the linear parameter system by using an iterative least square method; obtaining anoverall motion parameter by means of motion upward scale and motion iteration method; and finally obtaining a stable sequence by performing motion compensation on the overall motion parameter. The digital video image-stabilizing method disclosed by the invention is fast in processing speed and obvious in correction effect.

Description

Technical field: [0001] The invention belongs to the technical field of video processing, in particular to a digital video image stabilization method based on block motion estimation. Background technique: [0002] Video stabilization technology has been researched for decades, and the shake correction process is performed on the captured video to eliminate the irregular global motion between adjacent frames, thereby improving the visual quality of the image sequence of the handheld terminal with video shooting function . [0003] The existing video image stabilization algorithms can be mainly divided into two categories: (1) two-dimensional video shake correction algorithms; (2) multi-dimensional video shake correction algorithms. The two-dimensional video shake correction algorithm is relatively simple, the calculation complexity is small, and it is easy to realize real-time processing. However, only translational motion can be processed, and when processing multi-dimens...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/172H04N19/527H04N19/577G06T7/13
CPCG06T7/13H04N19/172H04N19/527H04N19/577
Inventor 黄倩王一鸣黄媛李燕平叶枫张迪
Owner HOHAI UNIV
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