Automatic detection method of jitter of video

A technology for video jitter and automatic detection, applied in the field of digital video, can solve the problem of lack of detection methods and standards in digital video, achieve high accuracy, improve efficiency and effect.

Active Publication Date: 2014-11-05
SHANGHAI JIAO TONG UNIV
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Problems solved by technology

[0004] At present, there is no complete detection method and standard for the jitter detection and evalua

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  • Automatic detection method of jitter of video
  • Automatic detection method of jitter of video
  • Automatic detection method of jitter of video

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[0022] The present invention will be described in detail below with reference to specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that, for those skilled in the art, several modifications and improvements can be made without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0023] like figure 1 As shown, it is an overall flow chart of an embodiment of the present invention, which specifically includes:

[0024] The first step is to select feature points in the current video frame;

[0025] The second step is to track and match feature points in adjacent frames to obtain inter-frame optical flow vectors;

[0026] The third step is to remove the abnormal points of the inter-frame optical flow vectors obtained in the second step; in the removal of abnormal opt...

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Abstract

The invention discloses an automatic detection method of jitter of a video. The automatic detection method comprises the following steps of: a first step, selecting feature points from a video picture; a second step, tracing and matching the feature points in an adjacent frame; a third step, removing abnormal points of the feature points to obtain an inter-frame motion vector; a fourth step, extracting a video jitter frequency and video jitter amplitude features; a fifth step, extracting histogram features of an inter-frame light stream vector; and a sixth step, judging the video jitter degree through a classifier. According to the automatic detection method, any prior knowledge is not needed while judging whether the video has jitter and the automatic detection method has the advantage of a higher accuracy rate.

Description

technical field [0001] The invention can be used for digital video captured by mobile or fixed equipment such as mobile phones, digital cameras, monitoring cameras, etc., to automatically detect whether there is jitter in the digital video picture, and is specifically an automatic detection method for video jitter. Background technique [0002] Digital videos shot by mobile terminals are often accompanied by video jitter, which affects the visual quality of the video and subsequent processing effects such as target recognition. Therefore, there are currently many video stabilization methods for reducing the degree of video jitter. However, for an arbitrary digital video, it is necessary to judge the degree of video jitter before correctly selecting the correct video image stabilization method and method parameters. [0003] On the one hand, the video shake detection method can be used as a preprocessing module of the video image stabilization method. For any video, the degre...

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Application Information

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IPC IPC(8): H04N5/14H04N5/21
Inventor 宋利蓝劲鹏瞿辉
Owner SHANGHAI JIAO TONG UNIV
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