Method and device for video image stabilization

A technology for video image stabilization and input images, which is applied in the field of intelligent video surveillance, can solve the problems of large amplitude, low frequency, and many false foreground points, and achieve the effects of small error, improved effectiveness, and reduced missed and false alarms

Active Publication Date: 2016-12-21
HANGZHOU HIKVISION DIGITAL TECH
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  • Abstract
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  • Claims
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Problems solved by technology

However, this algorithm also has shortcomings for the shaking scenes encountered in the IVS algorithm. First, the shaking is not necessarily completely high-frequency vibration, but may also be a movement with a large amplitude and a low frequency. This kind of movement is already very similar to the normal movement of the camera. So the assumption does not hold
Also, in this case, there are still a lot of false foreground points due to dithering

Method used

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  • Method and device for video image stabilization
  • Method and device for video image stabilization
  • Method and device for video image stabilization

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Embodiment Construction

[0034] In the following description, many technical details are proposed in order to enable readers to better understand the application. However, those skilled in the art can understand that the technical solutions claimed in the present invention can be realized even without these technical details and various changes and modifications based on the following implementation modes.

[0035] In order to make the purpose, technical solution and advantages of the present invention clearer, the following will further describe the implementation of the present invention in detail in conjunction with the accompanying drawings.

[0036] The first embodiment of the present invention relates to a video image stabilization method. figure 2 is a schematic flow chart of the video image stabilization method.

[0037] Specifically, as figure 2 As shown, the video image stabilization method includes the following steps:

[0038] In step 201, feature points are extracted according to an ...

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Abstract

The invention relates to the field of intelligent video surveillance, and discloses a video image stabilization method and device. According to the invention, input images are used to maintain a background of a background modeling model, correction images are used to maintain a foreground of the background modeling model, the thinking that the background and the foreground in the background modeling model can be only maintained by adopting the input images is extended, the false foreground caused by dithering is restrained better, the false-positive and false-negative phenomena are reduced, and the video monitoring efficiency is improved. During the video image stabilization process, an affine transformation model, RANSAC (Random Sample Consensus) algorithm and the least square method are combined reasonably to better describe the geometric transformation relations of the backgrounds in the input images and the background modeling models due to the dithering. The least square method can ensure the minimum error of the needed parameter in the mean square sense, and can further reduce errors caused by light stream matching.

Description

technical field [0001] The invention relates to the field of intelligent video monitoring, in particular to video image stabilization technology. Background technique [0002] With the development and maturity of technologies such as computer vision and pattern recognition, intelligent video surveillance (Intelligent Video Surveillance, referred to as "IVS") system has gradually come into people's sight. IVS is a technology based on video analysis and extracting semantic level information, which includes several links such as foreground segmentation, target tracking and event detection. Compared with the traditional "people-oriented" monitoring mode, the IVS system has the following characteristics: [0003] 1. The traditional monitoring mode requires people to observe through the monitor, which will inevitably lead to human fatigue for a long time, especially when watching multiple videos at the same time; while the IVS system based on digital signal processors, computers ...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): H04N5/21H04N5/14
Inventor王超全晓臣蔡巍伟任烨
OwnerHANGZHOU HIKVISION DIGITAL TECH