CN102065301A - Method and device for coding detecting information in intelligent monitoring system - Google Patents
Method and device for coding detecting information in intelligent monitoring system Download PDFInfo
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- CN102065301A CN102065301A CN2011100233794A CN201110023379A CN102065301A CN 102065301 A CN102065301 A CN 102065301A CN 2011100233794 A CN2011100233794 A CN 2011100233794A CN 201110023379 A CN201110023379 A CN 201110023379A CN 102065301 A CN102065301 A CN 102065301A
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- 238000006073 displacement reaction Methods 0.000 claims description 8
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Abstract
The invention discloses a method and a device for coding detecting information in an intelligent monitoring system. The method comprises the following steps of: confirming the external rectangular descriptive data of any motion target in a first frame of a coding fragment; if the motion direction of the motion target in the N+1th frame is inconsistent with the motion direction of the motion target in the Nth frame, confirming the external rectangular descriptive data of the motion target in the Nth frame; confirming a predicted motion trail of the motion of a motion target from the first frame to the Nth frame; confirming the predicted external rectangular descriptive data of any predicted frame motion target from the first frame to the Nth frame according to the predicted motion trail; and obtaining residual information between the practical external rectangular descriptive data and the predicted external rectangular descriptive data of the motion target and coding the residual information and the external rectangular descriptive data of the first frame and the Nth frame of the motion target to obtain the detecting information. The method and the device provided by the invention can reduce the redundancy of monitoring information by recording a difference value between the predicted motion trail and the practical motion trail of an object.
Description
Technical field
The present invention relates to the video file process field, relate in particular to the coding method and the device of the information that detects in a kind of intelligent monitor system.
Background technology
Now, comprise a large amount of static map picture frames in the video file in the multimedia file, these picture frames are shown to produce the effect of moving image by continuous fast (being generally per second 15 to 30 frames).These picture frames comprise: (1) a lot of exquisite background objects, and these background objects are determined by the image information that remains unchanged substantially; (2) a spot of motion thing, these motion things are determined by the image information that variation has to a certain degree taken place.The information that is comprised by the picture frame of continuous demonstration is similar usually, that is, the continuous images frame comprises a large amount of redundant informations.The redundancy that occurs in the video file can be divided into space, time and spectral redundancy.Spatial redundancy relates to the adjacent phase cross correlation that highlights pixel; Time redundancy relates to the variation of the specific image generation of subsequent frame; Spectral redundancy relates to the correlation of different colours component in the picture frame.
At present to be unit usually with the frame provide description to the boundary rectangle of each target on this two field picture to the information that moving object detection is obtained, and describes to comprise the central point of target boundary rectangle in every frame or the coordinate of upper left angle point, the wide height of boundary rectangle.Because the track of moving object many times is similar in video file, if then can there be a large amount of redundant informations in every frame all central point of record object boundary rectangle or the coordinate of upper left angle point, the wide height of boundary rectangle.
Summary of the invention
The embodiment of the invention provides the coding method and the device of the information that detects in a kind of intelligent monitor system, be used for solving prior art because the track of video file moving object many times is similar, thereby cause monitoring information in the supervisory control system to have the problem of bulk redundancy.
Detect the coding method of information in a kind of intelligent monitor system, comprising:
Determine the boundary rectangle data of description of arbitrary moving target in encode fragment first frame;
According to the displacement of described moving target between adjacent two frames, determine the actual motion track of described target;
If the direction of motion and former frame at the described moving target of N+1 frame are inconsistent, then determine the boundary rectangle data of description of described moving target at the N frame according to described actual motion track;
Determine the predicted motion track of first frame according to described moving target in the boundary rectangle data of description of first frame and N frame to the described moving target motion of N frame;
Determine the actual boundary rectangle data of description of first frame according to described actual motion track, and determine the prediction boundary rectangle data of description of the described moving target of this predictive frame according to described predicted motion track to the described moving target of arbitrary predictive frame between the N frame;
Obtain the residual information between described actual boundary rectangle data of description and prediction boundary rectangle data of description, and the boundary rectangle data of description of described residual information, moving target first frame and N frame encoded obtain this detection information, wherein, this detection information boundary rectangle data of description that is the every frame of moving target in the encode fragment.
Also provide in a kind of intelligent monitor system the code device of the information of detection according to said method the present invention, comprising:
The coded slices cutting unit is used for determining the boundary rectangle data of description of the arbitrary moving target of encode fragment first frame; According to the displacement of described moving target between adjacent two frames, determine the actual motion track of described target; If the direction of motion and former frame at the described moving target of N+1 frame are inconsistent, then determine the boundary rectangle data of description of described moving target at the N frame according to described actual motion track;
The straight path determining unit is used for determining the predicted motion track of first frame to the described moving target motion of N frame according to described moving target in the boundary rectangle data of description of first frame and N frame;
The residual information determining unit, be used for determining the actual boundary rectangle data of description of first frame, and determine the prediction boundary rectangle data of description of the described moving target of this predictive frame according to described predicted motion track to the described moving target of arbitrary predictive frame between the N frame according to described actual motion track; Obtain the residual information between described actual boundary rectangle data of description and the prediction boundary rectangle data of description;
Coding unit, being used for the boundary rectangle data of description of described residual information, moving target first frame and N frame encoded obtains this detection information, wherein, the boundary rectangle data of description that this detection information is the every frame of moving target in the encode fragment.
The device of the method that the embodiment of the invention provided of application, by the predicted motion track of record object and the difference of actual motion track, thus the amount of redundancy of minimizing monitor message.Thereby effectively eliminated the correlation redundancy that detects target data.
Description of drawings
Detect the flow chart of the coding method of information in a kind of intelligent monitor system of Fig. 1 embodiment of the invention;
The movement locus schematic diagram of Fig. 2 embodiment of the invention moving target between the 1-N frame;
Detect the structure chart of the code device of information in a kind of intelligent monitor system of Fig. 3 embodiment of the invention.
Embodiment
The embodiment of the invention provides the coding method of the information that detects in a kind of intelligent monitor system, the boundary rectangle data of description that described detection information is the every frame of moving target in the encode fragment, this method comprises: the boundary rectangle data of description of determining arbitrary moving target in encode fragment first frame; If the direction of motion and former frame at the described moving target of N+1 frame are inconsistent, then determine the boundary rectangle data of description of described moving target at the N frame; Determine the predicted motion track of first frame according to described moving target in the boundary rectangle data of description of first frame and N frame to the described moving target motion of N frame; Determine the prediction boundary rectangle data of description of the arbitrary predictive frame of described moving target between first frame and N frame according to described predicted motion track; Obtain the residual information between described actual boundary rectangle data of description and prediction boundary rectangle data of description, and the boundary rectangle data of description of described residual information, moving target first frame and N frame encoded obtain detection information.
As shown in Figure 1, detect the coding method of information in a kind of intelligent monitor system of the embodiment of the invention, specifically comprise step:
The method that the embodiment of the invention provided at first utilizes the displacement of moving target to judge the consistency of target travel.And the movement locus of moving target is divided into different coded slices, wherein, the process of passing through of a target is 1 coded slices (segment is a temporal coding unit).
Step 101 is determined the boundary rectangle data of description of arbitrary moving target in encode fragment first frame;
As shown in Figure 2, the movement locus of moving target between the 1-N frame, wherein, the data of description of this boundary rectangle comprises: the coordinate Y_Pos (1) of boundary rectangle center point coordinate X_Pos (1) or upper left angle point and the wide Width (1) of boundary rectangle and high Height (1);
Step 102 is obtained described moving target actual motion track;
In concrete implementation,, determine the actual motion track of described target according to the displacement of described moving target between adjacent two frames;
MVX(i)＝X_Pos(i+1)-X_Pos(i)；
MVY(i)＝Y_Pos(i+1)-Y_Pos(i)；
MVX (i) and the described moving target of MVY (i) expression are in the displacement of adjacent two interframe.
If step 103 inconsistent in the direction of motion and the former frame of the described moving target of N+1 frame, is then determined the boundary rectangle data of description of described moving target at the N frame according to described actual motion track;
According to the boundary rectangle data of description of first frame and the described moving target of N frame, determine mean value from the 1st frame to the described moving target boundary rectangle of N frame data of description variable quantity;
The mean value of described boundary rectangle data of description variable quantity, comprise the mean value of described moving target level and vertical displacement and the mean value of wide High variation (Avg_Width, Avg_Height)
Wherein, the mean value calculation method of level and vertical displacement is:
Avg_MVX＝1/(N-1)*∑MVX(i)；
Avg_MVY＝1/(N-1)*∑MVY(i)；
Step 104 is determined the predicted motion track of first frame to the described moving target motion of N frame according to described moving target in the boundary rectangle data of description of first frame and N frame;
Step 105 is determined the actual boundary rectangle data of description of first frame to the described moving target of arbitrary predictive frame between the N frame according to described actual motion track;
Wherein, determine that according to described predicted motion track the prediction boundary rectangle data of description specific implementation of the described moving target of this predictive frame can be:
Use the boundary rectangle data of description of described moving target first frame and the mean value of described boundary rectangle data of description variable quantity, determine the prediction boundary rectangle data of description of the described moving target of predictive frame.
Step 106, obtain the residual information between described actual boundary rectangle data of description and prediction boundary rectangle data of description, and the boundary rectangle data of description of described residual information, moving target first frame and N frame encoded obtain this detection information, wherein, this detection information boundary rectangle data of description that is the every frame of moving target in the encode fragment.
Wherein, in order to eliminate the redundancy in the statistics, utilize entropy coding method that the boundary rectangle data of description of described residual information, moving target first frame and N frame is encoded.
As shown in Figure 3, the embodiment of the invention also provides the code device of the information that detects in a kind of intelligent monitor system, the boundary rectangle data of description that described detection information is the every frame of moving target in the encode fragment, this device comprise coded slices cutting unit 301, predicted motion track determining unit 302, residual information determining unit 303 and coding unit 304:
Coded slices cutting unit 301 is used for determining the boundary rectangle data of description of the arbitrary moving target of encode fragment first frame; If the direction of motion and former frame at the described moving target of N+1 frame are inconsistent, then determine the boundary rectangle data of description of described moving target at the N frame;
Predicted motion track determining unit 302 is used for determining the predicted motion track of first frame to the described moving target motion of N frame according to described moving target in the boundary rectangle data of description of first frame and N frame;
Residual information determining unit 303, be used for determining the prediction boundary rectangle data of description of the arbitrary predictive frame of described moving target between first frame and N frame, obtain the residual information between described actual boundary rectangle data of description and prediction boundary rectangle data of description according to described predicted motion track;
In order to reduce to generate the amount of calculation of detection information, be set to straight-line trajectory at the described predicted motion track of the track of predicted motion described in the invention process determining unit.
In addition, in order to obtain the boundary rectangle data of description of moving target described in the straight path predictive frame, coded slices in the present embodiment is cut apart determining unit 301 and also is used for boundary rectangle data of description according to first frame and the described moving target of N frame, determines the mean value from the 1st frame to the described moving target boundary rectangle of N frame data of description variable quantity;
Then described residual information determining unit 303 also is used to use the boundary rectangle data of description of described moving target first frame and the mean value of described boundary rectangle data of description variable quantity, determines the prediction boundary rectangle data of description of the described moving target of predictive frame.
In order to eliminate statistical redundancy, described coding unit 304 is used for that also the boundary rectangle data of description of described residual information, moving target first frame and N frame is carried out entropy coding and eliminates statistical redundancy, obtains detection information.
Use method that the embodiment of the invention provides when detection information is encoded in the intelligent monitor system, occur beginning to be divided into different encode fragments and encode from detecting to the consistency according to motion of disappearing for each object in the scene.
The movement locus of a certain moving target as shown in Figure 2 then can use the 1st frame and M frame to carry out predictive coding the position of each frame between 1 to the M frame.The M frame all uses M frame and N frame to carry out predictive coding to the position of each frame between the N frame.Concrete coded message can be following form:
Object identification: { 0bj_ID}
Coding section 1:(the 1st is to the N frame)
Initial information: { X_Pos (1), Y_Pos (1), Width (1), Height (1), N, Avg_MVX, Avg_MVY, Avg_Width, Avg_Height}
Residual information: { X_Pos_Rest (N), Y_Pos_Rest (N), Width_Rest (N), Height_Rest (N); X_Pos_Rest (M), Y_Pos_Rest (M), Width_Rest (M), Height_Rest (M); X_Pos_Rest (2), Y_Pos_Rest (2), Width_Rest (2), Height_Rest (2); ...
Coding section 2:(N+1 is to the L frame)
Initial information: { X_Pos (N+1), Y_Pos (N+1), Width (N+1), Height (N+1), L, Avg_MVX, Avg_MVY, Avg_Width, Avg_Height}
Residual information: { X_Po s_Rest (L), Y_Pos_Rest (L), Width_Rest (L), Height_Rest (L); X_Pos_Rest (K), Y_Pos_Rest (K), Width_Rest (K), Height_Rest (K); X_Pos_Rest (N+2), Y_Pos_Rest (N+2), Width_Rest (N+2), Height_Rest (N+2); ...
......
Coding section n:
The method and apparatus that the embodiment of the invention provides has effectively been eliminated the correlation redundancy that detects target data by predictive coding mode.And utilize entropy coding that the information that generates is encoded, thereby the statistical redundancy in can elimination information.
Method of the present invention is not limited to the embodiment described in the embodiment, and those skilled in the art's technical scheme according to the present invention draws other execution mode, belongs to technological innovation scope of the present invention equally.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (10)
1. detect the coding method of information in the intelligent monitor system, it is characterized in that, comprising:
Determine the boundary rectangle data of description of arbitrary moving target in encode fragment first frame;
If the direction of motion and former frame at the described moving target of N+1 frame are inconsistent, then determine the boundary rectangle data of description of described moving target at the N frame;
Determine the predicted motion track of first frame according to described moving target in the boundary rectangle data of description of first frame and N frame to the described moving target motion of N frame;
Determine the prediction boundary rectangle data of description of the arbitrary predictive frame of described moving target between first frame and N frame according to described predicted motion track;
Obtain the residual information between described actual boundary rectangle data of description and prediction boundary rectangle data of description, and the boundary rectangle data of description of described residual information, moving target first frame and N frame encoded obtain detection information, wherein, this detection information boundary rectangle data of description that is the every frame of moving target in the encode fragment.
2. the method for claim 1 is characterized in that, described predicted motion track is a straight-line trajectory.
3. method as claimed in claim 2 is characterized in that, determines that according to described predicted motion track the prediction boundary rectangle data of description of the arbitrary predictive frame of described moving target between first frame and N frame comprises:
According to the boundary rectangle data of description of first frame and the described moving target of N frame, determine mean value from first frame to the described moving target boundary rectangle of N frame data of description variable quantity;
Use the boundary rectangle data of description of described moving target first frame and the mean value of described boundary rectangle data of description variable quantity, determine the prediction boundary rectangle data of description of the described moving target of predictive frame.
4. the method for claim 1 is characterized in that, the data of description of described boundary rectangle comprises: the coordinate of boundary rectangle central point or upper left angle point and boundary rectangle wide and high.
5. as the described method of the arbitrary claim of claim 1～3, it is characterized in that the boundary rectangle data of description of described residual information, moving target first frame and N frame is encoded to be obtained detection information and be specially:
The boundary rectangle data of description of described residual information, moving target first frame and N frame is carried out entropy coding eliminate statistical redundancy, obtain detection information.
6. method as claimed in claim 3 is characterized in that, the mean value of described boundary rectangle data of description variable quantity comprises the mean value of described moving target level and vertical displacement and the mean value of wide High variation.
7. detect the code device of information in the intelligent monitor system, it is characterized in that, comprising:
The coded slices cutting unit is used for determining the boundary rectangle data of description of the arbitrary moving target of encode fragment first frame; If the direction of motion and former frame at the described moving target of N+1 frame are inconsistent, then determine the boundary rectangle data of description of described moving target at the N frame;
Predicted motion track determining unit is used for determining the predicted motion track of first frame to the described moving target motion of N frame according to described moving target in the boundary rectangle data of description of first frame and N frame;
The residual information determining unit, be used for determining the prediction boundary rectangle data of description of the arbitrary predictive frame of described moving target between first frame and N frame, obtain the residual information between described actual boundary rectangle data of description and prediction boundary rectangle data of description according to described predicted motion track;
Coding unit, being used for the boundary rectangle data of description of described residual information, moving target first frame and N frame encoded obtains this detection information, wherein, the boundary rectangle data of description that this detection information is the every frame of moving target in the encode fragment.
8. device as claimed in claim 7 is characterized in that, the described predicted motion track of described predicted motion track determining unit is set to straight-line trajectory.
9. device as claimed in claim 8, it is characterized in that, described coded slices cutting unit also is used for the boundary rectangle data of description according to first frame and the described moving target of N frame, determines the mean value from first frame to the described moving target boundary rectangle of N frame data of description variable quantity;
Then described residual information determining unit also is used to use the boundary rectangle data of description of described moving target first frame and the mean value of described boundary rectangle data of description variable quantity, determines the prediction boundary rectangle data of description of the described moving target of predictive frame.
10. as the described device of the arbitrary claim of claim 7～9, it is characterized in that described coding unit is used for that also the boundary rectangle data of description of described residual information, moving target first frame and N frame is carried out entropy coding and eliminates statistical redundancy, obtains detection information.
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| US10087379B2 (en) | 2014-09-17 | 2018-10-02 | Ergon, Inc. | Process for producing naphthenic base oils |
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Effective date of registration: 20200424 Address after: Room 819, enterprise service center, No. 17, section 3, west section of Changjiang North Road, Yibin Lingang Economic and Technological Development Zone, Yibin City, Sichuan Province Patentee after: Yibin Zhongxing Technology Intelligent System Co., Ltd Address before: 100083, Haidian District, Xueyuan Road, Beijing No. 35, Nanjing Ning building, 16 floor Co-patentee before: VIMICRO Co.,Ltd. Patentee before: Mid Star Technology Limited by Share Ltd. |
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