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Video key position determination method and device

A key position and positioning method technology, applied in the computer field, can solve problems such as poor robustness and differences in calculation results, and achieve the effects of avoiding error transmission, achieving positioning, and high robustness

Active Publication Date: 2017-09-29
TRS INFORMATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the current video key position calculation is mainly based on the frame difference threshold calculation method. The key position calculated by this type of calculation method is very sensitive to the threshold value. Once the threshold value or the video itself changes slightly, the calculation result may have a huge change. difference, less robust

Method used

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  • Video key position determination method and device
  • Video key position determination method and device
  • Video key position determination method and device

Examples

Experimental program
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Embodiment 1

[0024] refer to figure 1 , shows a flow chart of steps of a method for locating key positions in a video according to Embodiment 1 of the present invention.

[0025] The video key position location method of the present embodiment comprises the following steps:

[0026] Step S102: Obtain frame differences between adjacent video frames in the video frame sequence.

[0027] Wherein, the video frame sequence may be continuous video frames of any video, for example, video content recorded in any scene.

[0028] Usually, the recorded video frame sequence needs to be video coded for storing consecutive video frames and calculating changes between consecutive video frames. In this embodiment, after the video frame sequence is acquired, video decoding is performed on the video frame sequence, each video frame in the video frame sequence is acquired, and a frame difference between adjacent video frames is calculated. Here, the calculation method of the frame difference is not limite...

Embodiment 2

[0041] refer to image 3 , shows a flow chart of steps of a method for locating key positions in a video according to Embodiment 2 of the present invention.

[0042] The video key position positioning method of the present embodiment includes the following steps:

[0043] Step S302: Obtain the frame difference between adjacent video frames in the sequence of video frames.

[0044] In this embodiment, before calculating the frame difference in the video frame sequence, preprocessing is performed on each video frame image in the video frame sequence, so as to prevent unauthorized modification of the video frame sequence from affecting the positioning of key video positions .

[0045] In an optional implementation manner, each video frame of the video frame sequence is adjusted to a set size, so as to prevent the resolution of the video frame from being modified. And / or, cutting the image edge area of ​​each video frame of the video frame sequence, for example, the upper edge ...

Embodiment 3

[0068] refer to Figure 4 , shows a structural block diagram of a video key position locating device according to Embodiment 3 of the present invention.

[0069] The device for locating key video positions in this embodiment includes a first acquisition module 402 , a second acquisition module 404 and a positioning module 406 . Wherein, the first acquiring module 402 is used to acquire the frame difference between each adjacent video frame in the video frame sequence; the second acquiring module 404 is used to acquire the first frame difference of the frame difference within the set range in the video frame sequence Large value; the positioning module 406 is used to determine the position of the first frame difference maximum value as the current key position of the video frame sequence if the first frame difference maximum value is located in the first area within the set range, wherein , the set range includes a first area range and a second area range, and the length of th...

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Abstract

The embodiment of the invention provides a video key position determination method and device. The video key position determination method comprises the following steps: acquiring a frame difference between every two adjacent video frames in a video frame sequence; acquiring a first frame difference maximum of the frame differences within a set range of the video frame sequence; and if the first frame difference maximum is located within a first area range of the set range, determining the position of the first frame difference maximum as a current key position of the video frame sequence, wherein the set range comprises the first area range and a second area range, and the length of the first area range is larger than the length of the second area range. The method and device adopting the technical scheme has the advantages that a video key position can be effectively determined, error propagation is avoided, and high robustness is achieved.

Description

technical field [0001] The invention relates to the field of computer technology, in particular to a video key position positioning method and device. Background technique [0002] Video gene technology can be used to prevent the spread of online pirated videos. Even if some scenes of the video are deleted or its color, resolution and wind attributes are changed, the "video gene" of the video clip is the same as the gene sequence of the organism, and it is still traceable. Generally speaking, as long as two videos have the same or extremely similar content for more than 5 seconds, the two videos should be traceable. [0003] Video key position calculation is the premise of video gene calculation. By calculating the image gene of the video frame at the key position of the video, and then "stringing" these image genes in time sequence, the video gene is formed. The key position of the video cannot be changed due to changes in video clips, encoding format, frame rate, resolut...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/137H04N19/167H04N19/17
CPCH04N19/137H04N19/167H04N19/17
Inventor 程涛王洪俊肖诗斌
Owner TRS INFORMATION TECH CO LTD
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