Video image stabilization method based on feature tracking and grid path motion
A video image stabilization and feature tracking technology, applied in TV, color TV, image enhancement, etc., can solve problems such as video jitter, and achieve the effect of jitter video stabilization
Inactive Publication Date: 2020-02-04
HUBEI UNIV OF TECH
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[0005] A video image stabilization algorithm based on feature tracking and grid path motion proposed by the present invention is mainly aimed at the problem of jittery video taken by handheld devices, and can better solve the problem of video jitter
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[0018] In order to facilitate those of ordinary skill in the art to understand and implement the present invention, the present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the implementation examples described here are only used to illustrate and explain the present invention, and are not intended to limit this invention.
[0019] please see figure 1 , a kind of video image stabilization method based on feature tracking and grid path motion provided by the present invention, comprises the following steps:
[0020] Step 1: For the original jittering video, first preprocess the original jittering video, and decompose the video into each frame through MATLAB software. Detect feature points of video frames through SIFT algorithm;
[0021] In this embodiment, the original shaking video is preprocessed, and the video is decomposed into each frame by MATLAB software.
[0022] In the...
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The invention discloses a video image stabilization method based on feature tracking and grid path motion. The method comprises the following steps: firstly, detecting feature points of a video framethrough an SIFT algorithm; carrying out KLT algorithm feature tracking matching on the detected SIFT feature points; estimating an affine transformation matrix between adjacent frames by using an RANSAC algorithm according to the matched feature points; and dividing the video frame into uniform grids, selecting one grid in the uniform grids, and multiplying the affine matrix between adjacent frames by the motion path of the camera of the previous frame so as to calculate the motion trail of the video. And optimizing and smoothing a plurality of grid paths by minimizing an energy function. Andfinally, calculating a compensation matrix between adjacent frames according to the relationship between the original camera path and the smooth camera path, and performing geometric transformation oneach frame by utilizing the compensation matrix so as to obtain a stable frame sequence. According to the invention, the camera path can be accurately calculated, and the jittered video is more stable.
Description
technical field [0001] The invention belongs to the technical field of digital image processing, and relates to a video image stabilization method, in particular to a video image stabilization method based on feature tracking and grid path motion. Background technique [0002] Shooting short videos through personal devices such as smartphones has become a mainstream way for people to record their lives. During the process of shooting video with a handheld mobile device, due to the influence of internal or external factors of the device, the obtained video is usually unstable. Jittering video degrades the quality of the video image, causing the viewer to feel dizzy. The purpose of the video image stabilization technology is mainly to eliminate or reduce the shaking of the video in order to generate a stable video. [0003] Video stabilization methods are generally divided into three parts: motion estimation, motion smoothing, and motion compensation. According to the diffe...
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Login to View More IPC IPC(8): H04N5/232G06T7/246G06T3/00
CPCG06T7/248G06T2207/10016H04N23/682H04N23/6811G06T3/147
Inventor 熊炜王传胜李敏李利荣刘敏曾春艳王娟
Owner HUBEI UNIV OF TECH