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Method and apparatus of determining video image jitter and camera device jitter

A technology of video images and camera devices, applied in image communication, television, color television, etc., can solve the problems of low accuracy and efficiency, and achieve the effect of improving efficiency, improving accuracy, and reducing the amount of calculation

Inactive Publication Date: 2017-05-24
BOCOM SMART INFORMATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Therefore, what the present invention aims to solve is the problem that the accuracy and efficiency of the existing image shake determination methods are low

Method used

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  • Method and apparatus of determining video image jitter and camera device jitter
  • Method and apparatus of determining video image jitter and camera device jitter
  • Method and apparatus of determining video image jitter and camera device jitter

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Experimental program
Comparison scheme
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Embodiment approach

[0097] As an optional implementation manner, the tracking unit includes:

[0098] The number of feature points determining unit is used to determine the number of feature points N0 and the number of tracked feature points N1 in the video image at the first moment;

[0099] The feature point number comparison unit determines whether N1 / N0 is greater than a predetermined threshold p;

[0100] The violent motion judging unit is used for judging that there is no violent motion in the image when N1 / N0 is greater than a predetermined threshold p.

[0101] As an optional implementation manner, the tracking unit uses an optical flow method to track the plurality of feature points;

[0102] The statistical unit includes:

[0103] A displacement vector determination unit, configured to determine the displacement vector L of each tracked feature point from the first moment to the second moment;

[0104] A displacement vector judging unit, configured to respectively judge whether the d...

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Abstract

The present invention provides a method and an apparatus of determining video image jitter and camera device jitter. The video image jitter determining method comprises the steps of acquiring multiple feature points in a video image at a first moment; tracking the multiple feature points, and determining at a second moment whether content in the image moves drastically according to tracked feature points; if the content in the image does not move drastically, determining a quantity of unmatched feature points in the tracked feature points; and determining, according to the quantity of the unmatched feature points, whether the video image at the second moment jitters compared with the video image at the first moment.

Description

technical field [0001] The invention relates to the field of image detection, in particular to a method and device for judging video image shake and camera shake. Background technique [0002] At present, video surveillance systems of various scales have been widely used in all walks of life. In addition to public security, finance, banking, transportation, military and ports, it also includes communities, office buildings, hotels, public places, factories, shopping malls, communities, Even family and other occasions. [0003] By detecting and judging the video image, the content of the image can be identified so as to realize the purpose of automatically identifying a certain target or behavior. However, due to the loose installation of the surveillance camera, strong external vibrations, etc., there are usually abnormalities in the video screen, which makes the image detection operation misjudge the behavior of the objects in the screen, so filter out these interference f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/14H04N7/18
CPCH04N5/145H04N7/18
Inventor 鲁梦梦李俊张如高
Owner BOCOM SMART INFORMATION TECH CO LTD
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