CN105957051A - Finishing line watch stopping device - Google Patents
Finishing line watch stopping device Download PDFInfo
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- CN105957051A CN105957051A CN201610239363.XA CN201610239363A CN105957051A CN 105957051 A CN105957051 A CN 105957051A CN 201610239363 A CN201610239363 A CN 201610239363A CN 105957051 A CN105957051 A CN 105957051A
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Abstract
The invention provides a finishing line watch stopping device which comprises a finishing line watch stopping device and a video monitoring device which is electrically connected with the finishing line watch stopping device, wherein the video monitoring device comprises the components of (1), an image acquisition module which is used for acquiring a video monitoring image; (2) an image preprocessing module which is used for performing moving object preliminary detection on original video image sequence information and outputting effective video image sequence information that comprises a moving object; (3), a filtering module which is used for receiving the effective video image sequence information and filtering the background shape of the effective video image sequence information; (4), a background modeling module which is used for establishing a background model after filtering, wherein the background module is composed of N shape context histograms which comprise weights and represent edge points; (5), a background subtraction module which is used for performing attribute classifying on the edge points on the current image frame and subtracting the edge points that belong to the background; and (6), a characteristic matching module. The finishing line watch stopping device can maximally reduce moving object error detection caused by background noise and camera jitter, and furthermore has high real-time performance.
Description
Technical field
The present invention relates to sports equipment field, be specifically related to a kind of finishing line stopwatch device.
Background technology
Video monitoring apparatus in correlation technique, there is problems in that (1) in video monitoring image series due to background
The existence of noise and be moving target by background flase drop;(2) during video monitoring, there is slight jitter, can be by background flase drop
For moving target;(3) during the detection to moving target, exist computationally intensive, the problem of poor real and can not be timely
Moving target detected.
Summary of the invention
For the problems referred to above, the present invention provides a kind of finishing line stopwatch device, and the video monitoring apparatus in this device can be
The flase drop to moving target that the minimizing of big degree causes due to background noise and DE Camera Shake, and real-time is good.
The purpose of the present invention realizes by the following technical solutions:
Provide a kind of finishing line stopwatch device, including finishing line stopwatch device and electrically connect with finishing line stopwatch device
Video monitoring apparatus, wherein, video monitoring apparatus includes:
(1) image capture module, is used for gathering video monitoring image, and it is connected to video monitoring equipment and gathers therein
Original video image sequence information;
(2) image just processing module, is connected with image capture module, for carrying out described original video image sequence information
The Preliminary detection of moving target processes and exports the effective video image sequence information including moving target;
(3) filtration module, is connected with image just processing module, is used for receiving described effective video image sequence information right
The background shape of effective video image sequence information is filtered processing, at the beginning of carrying out described background shape including using wiener ripple
The first-level filtering of secondary filtering is except submodule and uses again be filtered first filtered background shape two grades of gaussian filtering
Filter submodule;
(4) background modeling module, is connected with filtration module, is used for setting up filtered background model, described background model
Set by N number of Weight represent marginal point Shape context rectangular histogram form, background model up contour point in shape under
Literary composition histogram table is shown as:
Wherein, x is background edge point coordinates, and N represents the histogrammic number of comprised Shape context, the value model of N
Enclose for [5,10], wn,xRepresent the weight that the n-th Shape context rectangular histogram is corresponding, BlRepresent and sit for pole with background edge point x
The mark center of circle, radius are the circle concentric circular number according to logarithm distance foundation of R, BθRepresent and angle of circumference division is waited number;
(5) background subtraction module, is connected with background modeling module, for the marginal point on current frame image is carried out attribute
Classify and cut down the marginal point belonging to background, judging son including matching degree calculating sub module, constraints calculating sub module, attribute
Module and abatement submodule, described matching degree calculating sub module, constraints calculating sub module are all connected to described attribute and judge
Submodule, described attribute decision sub-module is connected to described abatement submodule, wherein:
A, matching degree calculating sub module, for calculating the Shape context rectangular histogram of current frame image up contour point with described
Matching degree between the Shape context rectangular histogram of corresponding marginal point in background model, the computing formula of described matching degree is:
In formula,The Shape context rectangular histogram of the marginal point x on expression current frame image,Represent background mould
The Shape context rectangular histogram of corresponding marginal point x in type, n=1 ... N;Represent the neighborhood of marginal point x,It is used for weighing the histogrammic difference of Shape context of two edges point,
The least, show that the Shape context histogram difference of two edges point is the least;
B, constraints calculating sub module, for calculating Shape context rectangular histogram and the institute of current frame image up contour point
Stating the constraints between the histogrammic difference of Shape context corresponding in background model, constraints formula is:
C, attribute decision sub-module, described attribute decision sub-module is for judging the genus of the marginal point on current frame image
Property, the marginal point on described current frame image is that the decision condition of the marginal point belonging to background is:
And
Wherein, TPFor the matching degree threshold value set according to background model, TYFor the constraints threshold set according to background model
Value;
D, abatement submodule, be judged to belong to the marginal point of background by attribute decision sub-module and output belongs to for rejecting
The area image of moving target;
(6) characteristic matching module, is connected with abatement submodule, for by the described area image belonging to moving target and number
Characteristic matching is carried out according to solid plate pre-in storehouse, if there being moving target to breast the tape, stopwatch.
Preferably, described image just processing module includes:
A, reference effective degree set submodule, for the effective degree reference threshold of the storage video image sample containing moving target
Value, described effective degree represents for judging in original video image sequence information that m frame video image is whether as described effective video
The judgement factor of image, described effective degree reference threshold includes rate of change of brightness reference threshold and target size reference threshold;
B, actually active degree calculating sub module, for calculating having of m frame video image in original video image sequence information
Validity, the computing formula of effective degree is:
Wherein, V represents effective degree, LmBeing the rate of change of brightness of m frame video image, M represents that original video image sequence is believed
Video image totalframes included in breath, m=1 ... M, mvFor rate of change of brightness in original video image sequence information more than bright
The totalframes of the video image of degree rate of change reference threshold, d is the target size of m frame video image, dpJoin for target size
Examine threshold value;
C, output sub-module, belong to the image information of effective video image sequence, when described current frame image for output
Effective degree more than described effective degree reference threshold time, described output sub-module export described current frame image.
The invention have the benefit that
1, image just processing module is set, for described original video image sequence information carries out the preliminary inspection of moving target
Survey processes and exports the effective video image sequence information including moving target, it is possible to be greatly saved memory space, improves inspection
The speed surveyed;
2, filtration module is set, is filtered local shape processing, it is possible to effectively filter out environment noise, it is to avoid will make an uproar
Sound flase drop is moving target;
3, background modeling module is set, uses weighting Shape context rectangular histogram to enter by the filtered background of filtration module
Row modeling, farthest decreases the flase drop to moving target caused due to background noise and DE Camera Shake;
4, in modeling process, only the Shape context rectangular histogram of marginal point is calculated, be greatly saved storage sky
Between, improve arithmetic speed, the real-time of system is strengthened;
5, background subtraction module is set, introduces matching degree and background is cut down by matching constraint condition, it is possible to be quickly accurate
True registrates moving target, completes detection.
Accompanying drawing explanation
The invention will be further described to utilize accompanying drawing, but the embodiment in accompanying drawing does not constitute any limit to the present invention
System, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to obtain according to the following drawings
Other accompanying drawing.
Fig. 1 is the connection diagram of each module of the present invention.
Detailed description of the invention
The invention will be further described with the following Examples.
Embodiment 1
See Fig. 1, the finishing line stopwatch device of the present embodiment include finishing line stopwatch device and with finishing line stopwatch device
The video monitoring apparatus of electrical connection, wherein, video monitoring apparatus includes:
(1) image capture module, is used for gathering video monitoring image, and it is connected to video monitoring equipment and gathers therein
Original video image sequence information;
(2) image just processing module, is connected with image capture module, for carrying out described original video image sequence information
The Preliminary detection of moving target processes and exports to be located at the beginning of the effective video image sequence information including moving target, described image
Reason module includes:
A, reference effective degree set submodule, for the effective degree reference threshold of the storage video image sample containing moving target
Value, described effective degree represents for judging in original video image sequence information that m frame video image is whether as described effective video
The judgement factor of image, described effective degree reference threshold includes rate of change of brightness reference threshold and target size reference threshold;
B, actually active degree calculating sub module, for calculating having of m frame video image in original video image sequence information
Validity, the computing formula of effective degree is:
Wherein, V represents effective degree, LmBeing the rate of change of brightness of m frame video image, M represents that original video image sequence is believed
Video image totalframes included in breath, m=1 ... M, mvFor rate of change of brightness in original video image sequence information more than bright
The totalframes of the video image of degree rate of change reference threshold, d is the target size of m frame video image, dpJoin for target size
Examine threshold value;
C, output sub-module, belong to the image information of effective video image sequence, when described current frame image for output
Effective degree more than described effective degree reference threshold time, described output sub-module export described current frame image;
(3) filtration module, is connected with image just processing module, is used for receiving described effective video image sequence information right
The background shape of effective video image sequence information is filtered processing, at the beginning of carrying out described background shape including using wiener ripple
The first-level filtering of secondary filtering is except submodule and uses again be filtered first filtered background shape two grades of gaussian filtering
Filter submodule;
(4) background modeling module, is connected with filtration module, is used for setting up filtered background model, described background model
Set by N number of Weight represent marginal point Shape context rectangular histogram form, background model up contour point in shape under
Literary composition histogram table is shown as:
Wherein, x is background edge point coordinates, and N represents the histogrammic number of comprised Shape context, the value model of N
Enclose for [5,10], wn,xRepresent the weight that the n-th Shape context rectangular histogram is corresponding, BlRepresent and sit for pole with background edge point x
The mark center of circle, radius are the circle concentric circular number according to logarithm distance foundation of R, BθRepresent and angle of circumference division is waited number;
(5) background subtraction module, is connected with background modeling module, for the marginal point on current frame image is carried out attribute
Classify and cut down the marginal point belonging to background, judging son including matching degree calculating sub module, constraints calculating sub module, attribute
Module and abatement submodule, described matching degree calculating sub module, constraints calculating sub module are all connected to described attribute and judge
Submodule, described attribute decision sub-module is connected to described abatement submodule, wherein:
A, matching degree calculating sub module, for calculating the Shape context rectangular histogram of current frame image up contour point with described
Matching degree between the Shape context rectangular histogram of corresponding marginal point in background model, the computing formula of described matching degree is:
In formula,The Shape context rectangular histogram of the marginal point x on expression current frame image,Represent background mould
The Shape context rectangular histogram of corresponding marginal point x in type, n=1 ... N;Represent the neighborhood of marginal point x,It is used for weighing the histogrammic difference of Shape context of two edges point,
The least, show that the Shape context histogram difference of two edges point is the least;
B, constraints calculating sub module, for calculating Shape context rectangular histogram and the institute of current frame image up contour point
Stating the constraints between the histogrammic difference of Shape context corresponding in background model, constraints formula is:
C, attribute decision sub-module, described attribute decision sub-module is for judging the genus of the marginal point on current frame image
Property, the marginal point on described current frame image is that the decision condition of the marginal point belonging to background is:
And
Wherein, TPFor the matching degree threshold value set according to background model, TYFor the constraints threshold set according to background model
Value;
D, abatement submodule, be judged to belong to the marginal point of background by attribute decision sub-module and output belongs to for rejecting
The area image of moving target;
(6) characteristic matching module, is connected with abatement submodule, for by the described area image belonging to moving target and number
Characteristic matching is carried out according to solid plate pre-in storehouse, if there being moving target to breast the tape, stopwatch.
The present embodiment arranges image just processing module, for described original video image sequence information is carried out moving target
Preliminary detection processes and exports the effective video image sequence information including moving target, it is possible to be greatly saved memory space,
Improve the speed of detection;Filtration module is set, is filtered local shape processing, it is possible to effectively filter out environment noise, keep away
Exempting from noise flase drop is moving target;Background modeling module is set, uses weighting Shape context rectangular histogram to by filtration module
Filtered background is modeled, farthest decrease due to background noise and DE Camera Shake cause to moving target
Flase drop;In modeling process, only the Shape context rectangular histogram of marginal point is calculated, is greatly saved memory space,
Improve arithmetic speed, the real-time of system is strengthened;Background subtraction module is set, introduces matching degree and matching constraint condition
Background is cut down, it is possible to fast and accurately moving target is registrated, complete detection;Wherein, N value is the biggest to background
It is the strongest that dynamic adapts to ability, but can take and store resource more, increases amount of calculation, and real-time also can be deteriorated, the present embodiment
Value N=5, compared with the video monitoring apparatus in relative skill, false drop rate reduces 1%, and arithmetic speed improves 5%.
Embodiment 2
See Fig. 1, the finishing line stopwatch device of the present embodiment include finishing line stopwatch device and with finishing line stopwatch device
The video monitoring apparatus of electrical connection, wherein, video monitoring apparatus includes:
(1) image capture module, is used for gathering video monitoring image, and it is connected to video monitoring equipment and gathers therein
Original video image sequence information;
(2) image just processing module, is connected with image capture module, for carrying out described original video image sequence information
The Preliminary detection of moving target processes and exports to be located at the beginning of the effective video image sequence information including moving target, described image
Reason module includes:
A, reference effective degree set submodule, for the effective degree reference threshold of the storage video image sample containing moving target
Value, described effective degree represents for judging in original video image sequence information that m frame video image is whether as described effective video
The judgement factor of image, described effective degree reference threshold includes rate of change of brightness reference threshold and target size reference threshold;
B, actually active degree calculating sub module, for calculating having of m frame video image in original video image sequence information
Validity, the computing formula of effective degree is:
Wherein, V represents effective degree, LmBeing the rate of change of brightness of m frame video image, M represents that original video image sequence is believed
Video image totalframes included in breath, m=1 ... M, mvFor rate of change of brightness in original video image sequence information more than bright
The totalframes of the video image of degree rate of change reference threshold, d is the target size of m frame video image, dpJoin for target size
Examine threshold value;
C, output sub-module, belong to the image information of effective video image sequence, when described current frame image for output
Effective degree more than described effective degree reference threshold time, described output sub-module export described current frame image;
(3) filtration module, is connected with image just processing module, is used for receiving described effective video image sequence information right
The background shape of effective video image sequence information is filtered processing, at the beginning of carrying out described background shape including using wiener ripple
The first-level filtering of secondary filtering is except submodule and uses again be filtered first filtered background shape two grades of gaussian filtering
Filter submodule;
(4) background modeling module, is connected with filtration module, is used for setting up filtered background model, described background model
Set by N number of Weight represent marginal point Shape context rectangular histogram form, background model up contour point in shape under
Literary composition histogram table is shown as:
Wherein, x is background edge point coordinates, and N represents the histogrammic number of comprised Shape context, the value model of N
Enclose for [5,10], wn,xRepresent the weight that the n-th Shape context rectangular histogram is corresponding, BlRepresent and sit for pole with background edge point x
The mark center of circle, radius are the circle concentric circular number according to logarithm distance foundation of R, BθRepresent and angle of circumference division is waited number;
(5) background subtraction module, is connected with background modeling module, for the marginal point on current frame image is carried out attribute
Classify and cut down the marginal point belonging to background, judging son including matching degree calculating sub module, constraints calculating sub module, attribute
Module and abatement submodule, described matching degree calculating sub module, constraints calculating sub module are all connected to described attribute and judge
Submodule, described attribute decision sub-module is connected to described abatement submodule, wherein:
A, matching degree calculating sub module, for calculating the Shape context rectangular histogram of current frame image up contour point with described
Matching degree between the Shape context rectangular histogram of corresponding marginal point in background model, the computing formula of described matching degree is:
In formula,The Shape context rectangular histogram of the marginal point x on expression current frame image,Represent background mould
The Shape context rectangular histogram of corresponding marginal point x in type, n=1 ... N;Represent the neighborhood of marginal point x,It is used for weighing the histogrammic difference of Shape context of two edges point,
The least, show that the Shape context histogram difference of two edges point is the least;
B, constraints calculating sub module, for calculating Shape context rectangular histogram and the institute of current frame image up contour point
Stating the constraints between the histogrammic difference of Shape context corresponding in background model, constraints formula is:
C, attribute decision sub-module, described attribute decision sub-module is for judging the genus of the marginal point on current frame image
Property, the marginal point on described current frame image is that the decision condition of the marginal point belonging to background is:
And
Wherein, TPFor the matching degree threshold value set according to background model, TYFor the constraints threshold set according to background model
Value;
D, abatement submodule, be judged to belong to the marginal point of background by attribute decision sub-module and output belongs to for rejecting
The area image of moving target;
(6) characteristic matching module, is connected with abatement submodule, for by the described area image belonging to moving target and number
Characteristic matching is carried out according to solid plate pre-in storehouse, if there being moving target to breast the tape, stopwatch.
The present embodiment arranges image just processing module, for described original video image sequence information is carried out moving target
Preliminary detection processes and exports the effective video image sequence information including moving target, it is possible to be greatly saved memory space,
Improve the speed of detection;Filtration module is set, is filtered local shape processing, it is possible to effectively filter out environment noise, keep away
Exempting from noise flase drop is moving target;Background modeling module is set, uses weighting Shape context rectangular histogram to by filtration module
Filtered background is modeled, farthest decrease due to background noise and DE Camera Shake cause to moving target
Flase drop;In modeling process, only the Shape context rectangular histogram of marginal point is calculated, is greatly saved memory space,
Improve arithmetic speed, the real-time of system is strengthened;Background subtraction module is set, introduces matching degree and matching constraint condition
Background is cut down, it is possible to fast and accurately moving target is registrated, complete detection;Wherein, N value is the biggest to background
It is the strongest that dynamic adapts to ability, but can take and store resource more, increases amount of calculation, and real-time also can be deteriorated, the present embodiment
Value N=6, compared with the video monitoring apparatus in relative skill, false drop rate reduces 2%, and arithmetic speed improves 4.5%.
Embodiment 3
See Fig. 1, the finishing line stopwatch device of the present embodiment include finishing line stopwatch device and with finishing line stopwatch device
The video monitoring apparatus of electrical connection, wherein, video monitoring apparatus includes:
(1) image capture module, is used for gathering video monitoring image, and it is connected to video monitoring equipment and gathers therein
Original video image sequence information;
(2) image just processing module, is connected with image capture module, for carrying out described original video image sequence information
The Preliminary detection of moving target processes and exports to be located at the beginning of the effective video image sequence information including moving target, described image
Reason module includes:
A, reference effective degree set submodule, for the effective degree reference threshold of the storage video image sample containing moving target
Value, described effective degree represents for judging in original video image sequence information that m frame video image is whether as described effective video
The judgement factor of image, described effective degree reference threshold includes rate of change of brightness reference threshold and target size reference threshold;
B, actually active degree calculating sub module, for calculating having of m frame video image in original video image sequence information
Validity, the computing formula of effective degree is:
Wherein, V represents effective degree, LmBeing the rate of change of brightness of m frame video image, M represents that original video image sequence is believed
Video image totalframes included in breath, m=1 ... M, mvFor rate of change of brightness in original video image sequence information more than bright
The totalframes of the video image of degree rate of change reference threshold, d is the target size of m frame video image, dpJoin for target size
Examine threshold value;
C, output sub-module, belong to the image information of effective video image sequence, when described current frame image for output
Effective degree more than described effective degree reference threshold time, described output sub-module export described current frame image;
(3) filtration module, is connected with image just processing module, is used for receiving described effective video image sequence information right
The background shape of effective video image sequence information is filtered processing, at the beginning of carrying out described background shape including using wiener ripple
The first-level filtering of secondary filtering is except submodule and uses again be filtered first filtered background shape two grades of gaussian filtering
Filter submodule;
(4) background modeling module, is connected with filtration module, is used for setting up filtered background model, described background model
Set by N number of Weight represent marginal point Shape context rectangular histogram form, background model up contour point in shape under
Literary composition histogram table is shown as:
Wherein, x is background edge point coordinates, and N represents the histogrammic number of comprised Shape context, the value model of N
Enclose for [5,10], wn,xRepresent the weight that the n-th Shape context rectangular histogram is corresponding, BlRepresent and sit for pole with background edge point x
The mark center of circle, radius are the circle concentric circular number according to logarithm distance foundation of R, BθRepresent and angle of circumference division is waited number;
(5) background subtraction module, is connected with background modeling module, for the marginal point on current frame image is carried out attribute
Classify and cut down the marginal point belonging to background, judging son including matching degree calculating sub module, constraints calculating sub module, attribute
Module and abatement submodule, described matching degree calculating sub module, constraints calculating sub module are all connected to described attribute and judge
Submodule, described attribute decision sub-module is connected to described abatement submodule, wherein:
A, matching degree calculating sub module, for calculating the Shape context rectangular histogram of current frame image up contour point with described
Matching degree between the Shape context rectangular histogram of corresponding marginal point in background model, the computing formula of described matching degree is:
In formula,The Shape context rectangular histogram of the marginal point x on expression current frame image,Represent background mould
The Shape context rectangular histogram of corresponding marginal point x in type, n=1 ... N;Represent the neighborhood of marginal point x,It is used for weighing the histogrammic difference of Shape context of two edges point,
The least, show that the Shape context histogram difference of two edges point is the least;
B, constraints calculating sub module, for calculating Shape context rectangular histogram and the institute of current frame image up contour point
Stating the constraints between the histogrammic difference of Shape context corresponding in background model, constraints formula is:
C, attribute decision sub-module, described attribute decision sub-module is for judging the genus of the marginal point on current frame image
Property, the marginal point on described current frame image is that the decision condition of the marginal point belonging to background is:
And
Wherein, TPFor the matching degree threshold value set according to background model, TYFor the constraints threshold set according to background model
Value;
D, abatement submodule, be judged to belong to the marginal point of background by attribute decision sub-module and output belongs to for rejecting
The area image of moving target;
(6) characteristic matching module, is connected with abatement submodule, for by the described area image belonging to moving target and number
Characteristic matching is carried out according to solid plate pre-in storehouse, if there being moving target to breast the tape, stopwatch.
The present embodiment arranges image just processing module, for described original video image sequence information is carried out moving target
Preliminary detection processes and exports the effective video image sequence information including moving target, it is possible to be greatly saved memory space,
Improve the speed of detection;Filtration module is set, is filtered local shape processing, it is possible to effectively filter out environment noise, keep away
Exempting from noise flase drop is moving target;Background modeling module is set, uses weighting Shape context rectangular histogram to by filtration module
Filtered background is modeled, farthest decrease due to background noise and DE Camera Shake cause to moving target
Flase drop;In modeling process, only the Shape context rectangular histogram of marginal point is calculated, is greatly saved memory space,
Improve arithmetic speed, the real-time of system is strengthened;Background subtraction module is set, introduces matching degree and matching constraint condition
Background is cut down, it is possible to fast and accurately moving target is registrated, complete detection;Wherein, N value is the biggest to background
It is the strongest that dynamic adapts to ability, but can take and store resource more, increases amount of calculation, and real-time also can be deteriorated, the present embodiment
Value N=7, compared with the video monitoring apparatus in relative skill, false drop rate reduces 3.5%, and arithmetic speed improves 4%.
Embodiment 4
See Fig. 1, the finishing line stopwatch device of the present embodiment include finishing line stopwatch device and with finishing line stopwatch device
The video monitoring apparatus of electrical connection, wherein, video monitoring apparatus includes:
(1) image capture module, is used for gathering video monitoring image, and it is connected to video monitoring equipment and gathers therein
Original video image sequence information;
(2) image just processing module, is connected with image capture module, for carrying out described original video image sequence information
The Preliminary detection of moving target processes and exports to be located at the beginning of the effective video image sequence information including moving target, described image
Reason module includes:
A, reference effective degree set submodule, for the effective degree reference threshold of the storage video image sample containing moving target
Value, described effective degree represents for judging in original video image sequence information that m frame video image is whether as described effective video
The judgement factor of image, described effective degree reference threshold includes rate of change of brightness reference threshold and target size reference threshold;
B, actually active degree calculating sub module, for calculating having of m frame video image in original video image sequence information
Validity, the computing formula of effective degree is:
Wherein, V represents effective degree, LmBeing the rate of change of brightness of m frame video image, M represents that original video image sequence is believed
Video image totalframes included in breath, m=1 ... M, mvFor rate of change of brightness in original video image sequence information more than bright
The totalframes of the video image of degree rate of change reference threshold, d is the target size of m frame video image, dpJoin for target size
Examine threshold value;
C, output sub-module, belong to the image information of effective video image sequence, when described current frame image for output
Effective degree more than described effective degree reference threshold time, described output sub-module export described current frame image;
(3) filtration module, is connected with image just processing module, is used for receiving described effective video image sequence information right
The background shape of effective video image sequence information is filtered processing, at the beginning of carrying out described background shape including using wiener ripple
The first-level filtering of secondary filtering is except submodule and uses again be filtered first filtered background shape two grades of gaussian filtering
Filter submodule;
(4) background modeling module, is connected with filtration module, is used for setting up filtered background model, described background model
Set by N number of Weight represent marginal point Shape context rectangular histogram form, background model up contour point in shape under
Literary composition histogram table is shown as:
Wherein, x is background edge point coordinates, and N represents the histogrammic number of comprised Shape context, the value model of N
Enclose for [5,10], wn,xRepresent the weight that the n-th Shape context rectangular histogram is corresponding, BlRepresent and sit for pole with background edge point x
The mark center of circle, radius are the circle concentric circular number according to logarithm distance foundation of R, BθRepresent and angle of circumference division is waited number;
(5) background subtraction module, is connected with background modeling module, for the marginal point on current frame image is carried out attribute
Classify and cut down the marginal point belonging to background, judging son including matching degree calculating sub module, constraints calculating sub module, attribute
Module and abatement submodule, described matching degree calculating sub module, constraints calculating sub module are all connected to described attribute and judge
Submodule, described attribute decision sub-module is connected to described abatement submodule, wherein:
A, matching degree calculating sub module, for calculating the Shape context rectangular histogram of current frame image up contour point with described
Matching degree between the Shape context rectangular histogram of corresponding marginal point in background model, the computing formula of described matching degree is:
In formula,The Shape context rectangular histogram of the marginal point x on expression current frame image,Represent background mould
The Shape context rectangular histogram of corresponding marginal point x in type, n=1 ... N;Represent the neighborhood of marginal point x,It is used for weighing the histogrammic difference of Shape context of two edges point,
The least, show that the Shape context histogram difference of two edges point is the least;
B, constraints calculating sub module, for calculating Shape context rectangular histogram and the institute of current frame image up contour point
Stating the constraints between the histogrammic difference of Shape context corresponding in background model, constraints formula is:
C, attribute decision sub-module, described attribute decision sub-module is for judging the genus of the marginal point on current frame image
Property, the marginal point on described current frame image is that the decision condition of the marginal point belonging to background is:
And
Wherein, TPFor the matching degree threshold value set according to background model, TYFor the constraints threshold set according to background model
Value;
D, abatement submodule, be judged to belong to the marginal point of background by attribute decision sub-module and output belongs to for rejecting
The area image of moving target;
(6) characteristic matching module, is connected with abatement submodule, for by the described area image belonging to moving target and number
Characteristic matching is carried out according to solid plate pre-in storehouse, if there being moving target to breast the tape, stopwatch.
The present embodiment arranges image just processing module, for described original video image sequence information is carried out moving target
Preliminary detection processes and exports the effective video image sequence information including moving target, it is possible to be greatly saved memory space,
Improve the speed of detection;Filtration module is set, is filtered local shape processing, it is possible to effectively filter out environment noise, keep away
Exempting from noise flase drop is moving target;Background modeling module is set, uses weighting Shape context rectangular histogram to by filtration module
Filtered background is modeled, farthest decrease due to background noise and DE Camera Shake cause to moving target
Flase drop;In modeling process, only the Shape context rectangular histogram of marginal point is calculated, is greatly saved memory space,
Improve arithmetic speed, the real-time of system is strengthened;Background subtraction module is set, introduces matching degree and matching constraint condition
Background is cut down, it is possible to fast and accurately moving target is registrated, complete detection;Wherein, N value is the biggest to background
It is the strongest that dynamic adapts to ability, but can take and store resource more, increases amount of calculation, and real-time also can be deteriorated, the present embodiment
Value N=8, compared with the video monitoring apparatus in relative skill, false drop rate reduces 4%, and arithmetic speed improves 3.7%.
Embodiment 5
See Fig. 1, the finishing line stopwatch device of the present embodiment include finishing line stopwatch device and with finishing line stopwatch device
The video monitoring apparatus of electrical connection, wherein, video monitoring apparatus includes:
(1) image capture module, is used for gathering video monitoring image, and it is connected to video monitoring equipment and gathers therein
Original video image sequence information;
(2) image just processing module, is connected with image capture module, for carrying out described original video image sequence information
The Preliminary detection of moving target processes and exports to be located at the beginning of the effective video image sequence information including moving target, described image
Reason module includes:
A, reference effective degree set submodule, for the effective degree reference threshold of the storage video image sample containing moving target
Value, described effective degree represents for judging in original video image sequence information that m frame video image is whether as described effective video
The judgement factor of image, described effective degree reference threshold includes rate of change of brightness reference threshold and target size reference threshold;
B, actually active degree calculating sub module, for calculating having of m frame video image in original video image sequence information
Validity, the computing formula of effective degree is:
Wherein, V represents effective degree, LmBeing the rate of change of brightness of m frame video image, M represents that original video image sequence is believed
Video image totalframes included in breath, m=1 ... M, mvFor rate of change of brightness in original video image sequence information more than bright
The totalframes of the video image of degree rate of change reference threshold, d is the target size of m frame video image, dpJoin for target size
Examine threshold value;
C, output sub-module, belong to the image information of effective video image sequence, when described current frame image for output
Effective degree more than described effective degree reference threshold time, described output sub-module export described current frame image;
(3) filtration module, is connected with image just processing module, is used for receiving described effective video image sequence information right
The background shape of effective video image sequence information is filtered processing, at the beginning of carrying out described background shape including using wiener ripple
The first-level filtering of secondary filtering is except submodule and uses again be filtered first filtered background shape two grades of gaussian filtering
Filter submodule;
(4) background modeling module, is connected with filtration module, is used for setting up filtered background model, described background model
Set by N number of Weight represent marginal point Shape context rectangular histogram form, background model up contour point in shape under
Literary composition histogram table is shown as:
Wherein, x is background edge point coordinates, and N represents the histogrammic number of comprised Shape context, the value model of N
Enclose for [5,10], wn,xRepresent the weight that the n-th Shape context rectangular histogram is corresponding, BlRepresent and sit for pole with background edge point x
The mark center of circle, radius are the circle concentric circular number according to logarithm distance foundation of R, BθRepresent and angle of circumference division is waited number;
(5) background subtraction module, is connected with background modeling module, for the marginal point on current frame image is carried out attribute
Classify and cut down the marginal point belonging to background, judging son including matching degree calculating sub module, constraints calculating sub module, attribute
Module and abatement submodule, described matching degree calculating sub module, constraints calculating sub module are all connected to described attribute and judge
Submodule, described attribute decision sub-module is connected to described abatement submodule, wherein:
A, matching degree calculating sub module, for calculating the Shape context rectangular histogram of current frame image up contour point with described
Matching degree between the Shape context rectangular histogram of corresponding marginal point in background model, the computing formula of described matching degree is:
In formula,The Shape context rectangular histogram of the marginal point x on expression current frame image,Represent background mould
The Shape context rectangular histogram of corresponding marginal point x in type, n=1 ... N;Represent the neighborhood of marginal point x,It is used for weighing the histogrammic difference of Shape context of two edges point,
The least, show that the Shape context histogram difference of two edges point is the least;
B, constraints calculating sub module, for calculating Shape context rectangular histogram and the institute of current frame image up contour point
Stating the constraints between the histogrammic difference of Shape context corresponding in background model, constraints formula is:
C, attribute decision sub-module, described attribute decision sub-module is for judging the genus of the marginal point on current frame image
Property, the marginal point on described current frame image is that the decision condition of the marginal point belonging to background is:
And
Wherein, TPFor the matching degree threshold value set according to background model, TYFor the constraints threshold set according to background model
Value;
D, abatement submodule, be judged to belong to the marginal point of background by attribute decision sub-module and output belongs to for rejecting
The area image of moving target;
(6) characteristic matching module, is connected with abatement submodule, for by the described area image belonging to moving target and number
Characteristic matching is carried out according to solid plate pre-in storehouse, if there being moving target to breast the tape, stopwatch.
The present embodiment arranges image just processing module, for described original video image sequence information is carried out moving target
Preliminary detection processes and exports the effective video image sequence information including moving target, it is possible to be greatly saved memory space,
Improve the speed of detection;Filtration module is set, is filtered local shape processing, it is possible to effectively filter out environment noise, keep away
Exempting from noise flase drop is moving target;Background modeling module is set, uses weighting Shape context rectangular histogram to by filtration module
Filtered background is modeled, farthest decrease due to background noise and DE Camera Shake cause to moving target
Flase drop;In modeling process, only the Shape context rectangular histogram of marginal point is calculated, is greatly saved memory space,
Improve arithmetic speed, the real-time of system is strengthened;Background subtraction module is set, introduces matching degree and matching constraint condition
Background is cut down, it is possible to fast and accurately moving target is registrated, complete detection;Wherein, N value is the biggest to background
It is the strongest that dynamic adapts to ability, but can take and store resource more, increases amount of calculation, and real-time also can be deteriorated, the present embodiment
Value N=10, compared with the video monitoring apparatus in relative skill, false drop rate reduces 4.2%, and arithmetic speed improves
3.5%.
Last it should be noted that, above example is only in order to illustrate technical scheme, rather than the present invention is protected
Protecting the restriction of scope, although having made to explain to the present invention with reference to preferred embodiment, those of ordinary skill in the art should
Work as understanding, technical scheme can be modified or equivalent, without deviating from the reality of technical solution of the present invention
Matter and scope.
Claims (2)
1. a finishing line stopwatch device, is characterized in that, electrically connects including finishing line stopwatch device with finishing line stopwatch device
Video monitoring apparatus, wherein, video monitoring apparatus includes:
(1) image capture module, is used for gathering video monitoring image, and it is connected to video monitoring equipment and gathers therein former regard
Frequently image sequence information;
(2) image just processing module, is connected with image capture module, for moving described original video image sequence information
The Preliminary detection of target processes and exports the effective video image sequence information including moving target;
(3) filtration module, is connected with image just processing module, is used for receiving described effective video image sequence information and to effectively
The background shape of sequence of video images information is filtered processing, and filters described background shape for the first time including using wiener ripple
The first-level filtering of ripple filters except submodule and use gaussian filtering to be again filtered first filtered background shape two grades
Submodule;
(4) background modeling module, is connected with filtration module, is used for setting up filtered background model, and described background model sets
Being made up of the Shape context rectangular histogram representing marginal point of N number of Weight, the Shape context of background model up contour point is straight
Side's figure is expressed as:
Wherein, x is background edge point coordinates, and N represents the histogrammic number of comprised Shape context, and the span of N is
[5,10], wn,xRepresent the weight that the n-th Shape context rectangular histogram is corresponding, BlRepresent with background edge point x for polar coordinate circle
The heart, radius are the circle concentric circular number according to logarithm distance foundation of R, BθRepresent and angle of circumference division is waited number;
(5) background subtraction module, is connected with background modeling module, for the marginal point on current frame image is carried out attributive classification
And cut down the marginal point belonging to background, including matching degree calculating sub module, constraints calculating sub module, attribute decision sub-module
With abatement submodule, described matching degree calculating sub module, constraints calculating sub module are all connected to described attribute and judge submodule
Block, described attribute decision sub-module is connected to described abatement submodule, wherein:
A, matching degree calculating sub module, for calculating the Shape context rectangular histogram of current frame image up contour point and described background
Matching degree between the Shape context rectangular histogram of corresponding marginal point on model, the computing formula of described matching degree is:
In formula,The Shape context rectangular histogram of the marginal point x on expression current frame image,Represent in background model
The Shape context rectangular histogram of corresponding marginal point x, n=1 ... N;Represent the neighborhood of marginal point x,
It is used for weighing the histogrammic difference of Shape context of two edges point,The least, show two
The Shape context histogram difference of marginal point is the least;
B, constraints calculating sub module, for calculating the Shape context rectangular histogram of current frame image up contour point and the described back of the body
Constraints between the histogrammic difference of Shape context corresponding on scape model, constraints formula is:
C, attribute decision sub-module, described attribute decision sub-module is for judging the attribute of the marginal point on current frame image, institute
Stating the decision condition that the marginal point on current frame image is the marginal point belonging to background is:
And
Wherein, TPFor the matching degree threshold value set according to background model, TYFor the constraints threshold value set according to background model;
D, abatement submodule, be judged to belong to the marginal point of background by attribute decision sub-module and output belongs to motion for rejecting
The area image of target;
(6) characteristic matching module, is connected with abatement submodule, for by the described area image belonging to moving target and data base
In pre-solid plate carry out characteristic matching, if there being moving target to breast the tape, stopwatch.
A kind of finishing line stopwatch device the most according to claim 1, is characterized in that, described image just processing module includes:
A, reference effective degree set submodule, for the effective degree reference threshold of the storage video image sample containing moving target,
Described effective degree represents for judging in original video image sequence information that m frame video image is whether as described effective video image
The judgement factor, described effective degree reference threshold includes rate of change of brightness reference threshold and target size reference threshold;
B, actually active degree calculating sub module, for calculating the effective degree of m frame video image in original video image sequence information,
The computing formula of effective degree is:
Wherein, V represents effective degree, LmBeing the rate of change of brightness of m frame video image, M represents institute in original video image sequence information
The video image totalframes comprised, m=1 ... M, mvFor rate of change of brightness in original video image sequence information more than brightness flop
The totalframes of the video image of rate reference threshold, d is the target size of m frame video image, dpFor target size reference threshold;
C, output sub-module, belong to the image information of effective video image sequence, when having of described current frame image for output
When validity is more than described effective degree reference threshold, described output sub-module exports described current frame image.
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