CN106296584A - A kind of method that panoramic mosaic figure shows with local video or image co-registration - Google Patents

A kind of method that panoramic mosaic figure shows with local video or image co-registration Download PDF

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CN106296584A
CN106296584A CN201610635319.0A CN201610635319A CN106296584A CN 106296584 A CN106296584 A CN 106296584A CN 201610635319 A CN201610635319 A CN 201610635319A CN 106296584 A CN106296584 A CN 106296584A
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panoramic mosaic
component
coordinate system
wid
hei
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CN106296584B (en
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刘光盐
杨迪航
李捷
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Hangzhou Puwei cloud Technology Co.,Ltd.
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PUWELL TECHNOLOGIES (HANGZHOU) Co Ltd
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    • G06COMPUTING; CALCULATING OR COUNTING
    • G06TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T3/00Geometric image transformations in the plane of the image
    • G06T3/40Scaling of whole images or parts thereof, e.g. expanding or contracting
    • G06T3/4038Image mosaicing, e.g. composing plane images from plane sub-images
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00Television systems
    • H04N7/18Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast

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Abstract

The present invention relates to a kind of method that panoramic mosaic figure shows with local video or image co-registration.The method is by PTZ camera current video or shooting angle (horizontal angle Pan of certain sectional drawing, angle of pitch Tilt), and coverage (angle of view, zoom Zoom), calculate the image-region particular location at panoramic mosaic model, then the content updated in panoramic picture in respective regions, when shooting angle and scope change, the respective regions in change panoramic picture, and the restore-zone that original video covers returns panoramic mosaic figure.The method improves the man-machine experience that solution panoramic mosaic figure shows with local video or image co-registration.

Description

A kind of method that panoramic mosaic figure shows with local video or image co-registration
Technical field
The present invention relates to a kind of method that panoramic mosaic figure shows with local video or image co-registration.
Background technology
In conventional CCTV camera, there is a kind of PTZ camera such as Fig. 1, although the coverage of camera lens is limited, but due to dress On rotatable The Cloud Terrace, it is possible to achieve level and the rotation of pitching, expand monitoring range.
Understanding to realize the summary to surrounding, splicing frequently appears in the application of this kind of PTZ camera, By being spliced by the picture that camera shoots in different angles, obtain the picture of a coverage the most even panorama. Such as Fig. 2.But the image of splicing is static, it is impossible to real-time update, thus need nonetheless remain for connecing a camera video synthesis and use.
Video image and panoramic mosaic image with the use of, need user switch, and abstract location fusion video exist The content of panoramic mosaic image.Still inconvenience is had in man-machine experience.
The split-join model being currently employed for PTZ camera includes cylinder model more, and Sphere Measurement Model etc., by characteristic matching, ball The methods such as coordinate transform, it is achieved PTZ camera sequence of pictures splicing and combining on model.Such as Fig. 3, pass through cylinder for ptz camera The annulus panorama sketch of model splicing.
Panoramic mosaic figure can directly show by 2D, it is also possible to is converted by 3D engine, becomes virtual PTZ and shows.As Fig. 4,3D engine the virtual PTZ image on 4 directions obtained.
In addition, also there is a kind of product adding full shot in PTZ device, directly generated panorama by attachment lens Figure.
Summary of the invention
In order to solve above-mentioned technical problem, it is an object of the invention to provide a kind of panoramic mosaic figure and local video or figure Method shown in merging, the method improves the man-machine experience solving this separate type.
In order to realize above-mentioned purpose, present invention employs following technical scheme:
A kind of method that panoramic mosaic figure shows with local video or image co-registration, the method comprises the following steps:
A) according to the algorithm of panoramic mosaic, panoramic mosaic pixel coordinate system R is obtainedpanoWith split-join model coordinate system Rmodel Corresponding relation Fp-m
B) PTZ camera video present frame or shooting angle Pan of certain sectional drawing and Tilt are obtained;
C) according to PTZ camera coverage and zoom, present frame or the horizontal direction shooting angle model of certain sectional drawing are obtained Enclose RangepanAnd the Range in vertical directiontilt, and resolution (Widv,Heiv);
D) according to Pan, Tilt, RangepanAnd Rangetilt, obtain model coordinate systems RmodelSit with the pixel of PTZ camera Mark system RptCorresponding relation Fm-pt
E) selected display mode, while display panoramic mosaic figure, according to corresponding relation Fp-mAnd Fm-ptCalculate panorama sketch In each position whether in the range of the current shooting of PTZ camera, if in the range of, then by content replace, content cover And/or content mergence method, the current video frame of display PTZ camera or sectional drawing;If outside scope, then show original spliced map Content.
As preferably, the present invention panoramic mosaic figure be 2D display panoramic mosaic figure or 3D shows panoramic mosaic figure.
As preferably, panoramic mosaic figure is 2D when showing panoramic mosaic figure,
RpanoFor cartesian coordinate system
RmodelFor normalization polar coordinate system
F p - m : P m = x p a n o * P m a x - P m i n Wid p a n o + P min T m = y p a n o * T max - T m i n Hei p a n o + T m i n .
As improving further, when panoramic mosaic figure is 2D display panoramic mosaic figure, in step d),
F m - p t : x p t = D i s * tan ( Δ P a n ) + W i d v * 0.5 y p t = D i s * tan ( Δ T i l t ) + H e i v * 0.5 ,
Wherein:
Dis=Widv*0.5/tan(Rpan* 0.5) or
Dis=Heiv*0.5/tan(Rtilt* 0.5),
Δ P a n = P m - P v Δ T i l t = T m - T v .
As preferably, panoramic mosaic figure is 3D when showing panoramic mosaic figure,
RpanoFor cartesian coordinate system
RmodelFor cartesian coordinate system
P m = arccos ( x m | | x d m y d m | | ) : y m > 0 180 + arccos ( x m | | x d m y d m | | ) : y m < 0 T m = arcsin ( z m | | x m y m z m | | ) 1 ,
F m - p : x p a n o = ( P m - P m i n ) * W i d p a n o / ( P m a x - P m i n ) y p a n o = ( T m - T m i n ) * H e i p a n o / ( T m a x - T min ) ;
As improving further, when panoramic mosaic figure is 3D display panoramic mosaic figure, in step d),
m 00 m 01 m 02 m 10 m 11 m 12 m 20 m 21 m 22 * x d y d z d = x m y m z m ,
x d y d z d = m 00 m 01 m 02 m 10 m 11 m 12 m 20 m 21 m 22 - 1 * x m y m z m ,
F m - p t : x p t = D i s * y d / | | x d y d | | + Wid v * 0.5 y p t = D i s * z d / | | x d y d z d | | + Hei v * 0.5 ,
Wherein:
m 00 m 01 m 02 m 10 m 11 m 12 m 20 m 21 m 22 = cos ( T v ) sin ( T v ) 0 - sin ( T v ) cos ( T v ) 0 0 0 1 * cos ( P v ) 0 - sin ( P v ) 0 1 0 sin ( P v ) 0 cos ( P v ) .
Due to the fact that and have employed above-mentioned technical scheme, by PTZ camera current video or the shooting angle of certain sectional drawing Degree (horizontal angle Pan, angle of pitch Tilt), and coverage (angle of view, zoom Zoom), calculate image-region at panorama The particular location of split-join model, the content then updated in panoramic picture in respective regions, when shooting angle and scope change, Respective regions in change panoramic picture, and the restore-zone that original video covers returns panoramic mosaic figure.The method improves solution The man-machine experience that panoramic mosaic figure and local video or image co-registration show.
Accompanying drawing explanation
Fig. 1 is Pan/Tilt/Zoom camera image.
Fig. 2 is Pan/Tilt/Zoom camera stitching image.
Fig. 3 is annulus panorama sketch.
Fig. 4 is virtual PTZ technology figure under multi-angle.
Fig. 5 is cartesian coordinate system video-projection figure.
Fig. 6 is annulus splicing figure and head-shaking machine video frame content figure.
Fig. 7 is frame of video in-scope figure.
Fig. 8 is 2D display panoramic mosaic and frame of video fusion results figure.
Fig. 9 is 3D display panoramic mosaic and frame of video fusion results figure.
Detailed description of the invention
Below in conjunction with the accompanying drawings the detailed description of the invention of the present invention is made a detailed explanation.
The present invention to relate to parameter interpretation as follows:
xpano: panoramic mosaic pixel coordinate figure X-component, the upper left corner is 0, and the lower right corner is Widpano
ypano: panoramic mosaic pixel coordinate figure Y-component, the upper left corner is 0, and the lower right corner is Heipano
Widpano: panoramic mosaic figure width
Heipano: panoramic mosaic figure is high
Pm: the horizontal angle component of polar coordinate system split-join model
Tm: the angle of pitch component of polar coordinate system split-join model
Pv: the horizontal angle component of head-shaking machine The Cloud Terrace
Tv: the angle of pitch component of head-shaking machine The Cloud Terrace
Rpan: the field of view angle of video image horizontal direction
Rtilt: the field of view angle of video image vertical direction
Widv: video image width
Heiv: video image water is high
xpt: video image element coordinate figure X-component, the upper left corner is 0, and the lower right corner is Widv
ypt: video image element coordinate figure X-component, the upper left corner is 0, and the lower right corner is Heiv
xm: during 3D display, the X-component of the normalization direction vector of cartesian coordinate system split-join model
ym: during 3D display, the Y-component of the normalization direction vector of cartesian coordinate system split-join model
zm: during 3D display, the Z component of the normalization direction vector of cartesian coordinate system split-join model
xm: during 3D display, the X-component of the normalization direction vector of cartesian coordinate system video-projection
ym: during 3D display, the Y-component of the normalization direction vector of cartesian coordinate system video-projection
zm: during 3D display, the Z component of the normalization direction vector of cartesian coordinate system video-projection
Cartesian coordinate system video-projection Fig. 5, camera lens optical axis is X-axis.
Embodiment 1 2D display panoramic mosaic and the fusion of head-shaking machine video
Head-shaking machine only has two degree of freedom of Pan, Tilt, does not has Zoom
A) cylindrical panoramic annulus and split-join model coordinate system transformational relation F are obtainedp-m
RpanoFor cartesian coordinate system
RmodelFor normalization polar coordinate system P m | &Element; ( P min , P max ) T m | &Element; ( T min , T max ) 1 ,
F p - m : P m = x p a n o * P m a x - P m i n Wid p a n o + P min T m = y p a n o * T max - T m i n Hei p a n o + T m i n ;
B) by private information or agreement, the shooting angle of head-shaking machine video present frame is obtained
C) head-shaking machine coverage is obtainedAnd video resolutionWherein it must is fulfilled for
Heiv=Widv*tan(Rtilt*0.5)/tan(Rpan* 0.5) or
Rtilt=atctan (Heiv/Widv*tan(Rpan*0.5))*2;
D) model coordinate systems R is obtainedmodelWith head-shaking machine video pixel coordinates system RptCorresponding relation Fm-pt,
F m - p t : x p t = D i s * tan ( &Delta; P a n ) + W i d v * 0.5 y p t = D i s * tan ( &Delta; T i l t ) + H e i v * 0.5 ;
Wherein:
Dis=Widv*0.5/tan(Rpan* 0.5) or
Dis=Heiv*0.5/tan(Rtilt*0.5);
&Delta; P a n = P m - P v &Delta; T i l t = T m - T v ;
If xpt∈(0,Widv) and ypt∈(0,Heiv), then in panoramic mosaic figure, this location conten is fused and replaces to The response contents of video present frame.Below figure: Fig. 6 shows panoramic mosaic figure and head-shaking machine current video frame;Fig. 7 shows and calculates Head-shaking machine current video position;Fig. 8 is for merging final result.
Embodiment 2 3D display panoramic mosaic and the fusion of head-shaking machine video
Head-shaking machine only has two degree of freedom of Pan, Tilt, does not has Zoom.And 3D shows, having model coordinate systems is original coordinates System, distinguishes sphere spliced map position corresponding to computation model diverse location and head-shaking machine video location.
A) the coordinate system transformational relation F of sphere split-join model and spliced map is obtainedm-p
RpanoFor cartesian coordinate system
RmodelFor cartesian coordinate system
P m = arccos ( x m | | x d m y d m | | ) : y m > 0 180 + arccos ( x m | | x d m y d m | | ) : y m < 0 T m = arcsin ( z m | | x m y m z m | | ) 1 ,
F m - p : x p a n o = ( P m - P m i n ) * W i d p a n o / ( P m a x - P m i n ) y p a n o = ( T m - T m i n ) * H e i p a n o / ( T m a x - T min ) ;
B) by private information or agreement, the shooting angle of head-shaking machine video present frame is obtained
C) head-shaking machine coverage is obtainedAnd video resolutionWherein it must is fulfilled for
Heiv=Widv*tan(Rtilt*0.5)/tan(Rpan0.5) or
Rtilt=atctan (Heiv/Widv*tan(Rpan*0.5))*2;
D) model coordinate systems R is obtainedmodelWith head-shaking machine video pixel coordinates system RptCorresponding relation Fm-pt
x u y u z u = c o s ( P v ) c o s ( T v ) s i n ( P v ) c o s ( T v ) sin ( T v ) ,
m 00 m 01 m 02 m 10 m 11 m 12 m 20 m 21 m 22 * x d y d z d = x m y m z m ,
x d y d z d = m 00 m 01 m 02 m 10 m 11 m 12 m 20 m 21 m 22 - 1 * x m y m z m ,
F m - p t : x p t = D i s * y d / | | x d y d | | + Wid v * 0.5 y p t = D i s * z d / | | x d y d z d | | + Hei v * 0.5 ,
Wherein:
m 00 m 01 m 02 m 10 m 11 m 12 m 20 m 21 m 22 = cos ( T v ) sin ( T v ) 0 - sin ( T v ) cos ( T v ) 0 0 0 1 * cos ( P v ) 0 sin ( P v ) 0 1 0 sin ( P v ) 0 cos ( P v ) .
If xpt∈(0,Widv) and ypt∈(0,Heiv), then in panoramic mosaic figure, this location conten is fused and replaces to The response contents of video present frame.If Fig. 9 is for merging final result.

Claims (6)

1. the method that a panoramic mosaic figure shows with local video or image co-registration, it is characterised in that the method includes following Step:
A) according to the algorithm of panoramic mosaic, panoramic mosaic pixel coordinate system R is obtainedpanoWith split-join model coordinate system RmodelRight F should be related top-m
B) PTZ camera video present frame or shooting angle Pan of certain sectional drawing and Tilt are obtained;
C) according to PTZ camera coverage and zoom, present frame or the horizontal direction shooting angle scope of certain sectional drawing are obtained RangepanAnd the Range in vertical directiontilt, and resolution (Widv,Heiv);
D) according to Pan, Tilt, RangepanAnd Rangetilt, obtain model coordinate systems RmodelPixel coordinate system with PTZ camera RptCorresponding relation Fm-pt
E) selected display mode, while display panoramic mosaic figure, according to corresponding relation Fp-mAnd Fm-ptCalculate in panorama sketch each Whether individual position in the range of the current shooting of PTZ camera, if in the range of, then by content replace, content cover and/or Content mergence method, the current video frame of display PTZ camera or sectional drawing;If outside scope, then show the interior of original spliced map Hold.
The method that a kind of panoramic mosaic figure the most according to claim 1 shows with local video or image co-registration, its feature It is that panoramic mosaic figure is 2D display panoramic mosaic figure or 3D display panoramic mosaic figure.
The method that a kind of panoramic mosaic figure the most according to claim 1 shows with local video or image co-registration, its feature It is when panoramic mosaic figure is 2D display panoramic mosaic figure,
RpanoFor cartesian coordinate system
RmodelFor normalization polar coordinate system
F p - m : P m = x p a n o * P m a x - P m i n Wid p a n o + P min T m = y p a n o * T max - T min Hei p a n o + T min ;
Wherein:
xpano: panoramic mosaic pixel coordinate figure X-component, the upper left corner is 0, and the lower right corner is Widpano
ypano: panoramic mosaic pixel coordinate figure Y-component, the upper left corner is 0, and the lower right corner is Heipano
Pm: the horizontal angle component of polar coordinate system split-join model;
Tm: the angle of pitch component of polar coordinate system split-join model.
The method that a kind of panoramic mosaic figure the most according to claim 3 shows with local video or image co-registration, its feature It is in step d),
F m - p t : x p t = D i s * t a n ( &Delta; P a n ) + Wid v * 0.5 y p t = D i s * t a n ( &Delta; T i l t ) + Hei v * 0.5 ,
Dis=Widv*0.5/tan(Rpan* 0.5) or
Dis=Heiv*0.5/tan(Rtilt* 0.5),
&Delta; P a n = P m - P v &Delta; T i l t = T m - T v ;
Wherein:
xpt: video image element coordinate figure X-component, the upper left corner is 0, and the lower right corner is Widv
ypt: video image element coordinate figure X-component, the upper left corner is 0, and the lower right corner is Heiv
Rpan: the field of view angle of video image horizontal direction
Rtilt: the field of view angle of video image vertical direction
Widv: video image width
Heiv: video image is high
Pm: the horizontal angle component of polar coordinate system split-join model
Tm: the angle of pitch component of polar coordinate system split-join model
Pv: the horizontal angle component of The Cloud Terrace
Tv: the angle of pitch component of The Cloud Terrace.
The method that a kind of panoramic mosaic figure the most according to claim 1 shows with local video or image co-registration, its feature It is when panoramic mosaic figure is 3D display panoramic mosaic figure,
RpanoFor cartesian coordinate system
RmodelFor cartesian coordinate system
P m = a r c cos ( x m | | x d m y d m | | ) : y m > 0 180 + a r c cos ( x m | | x d m y d m | | ) : y m < 0 T m = a r c sin ( z m | | x m y m z m | | ) 1 ,
F m - p : x p a n o = ( P m - P m i n ) * Wid p a n o / ( P m a x - P m i n ) y p a n o = ( T m - T m i n ) * Hei p a n o / ( T m a x - T m i n ) ;
Wherein:
xpano: panoramic mosaic pixel coordinate figure X-component, the upper left corner is 0, and the lower right corner is Widpano
ypano: panoramic mosaic pixel coordinate figure Y-component, the upper left corner is 0, and the lower right corner is Heipano
xm: during 3D display, the X-component of the normalization direction vector of cartesian coordinate system split-join model
ym: during 3D display, the Y-component of the normalization direction vector of cartesian coordinate system split-join model
zm: during 3D display, the Z component of the normalization direction vector of cartesian coordinate system split-join model
Pm: the horizontal angle component of polar coordinate system split-join model
Tm: the angle of pitch component of polar coordinate system split-join model
Widpano: panoramic mosaic figure width
Heipano: panoramic mosaic figure is high.
The method that a kind of panoramic mosaic figure the most according to claim 5 shows with local video or image co-registration, its feature It is in step d),
m 00 m 01 m 02 m 10 m 11 m 12 m 20 m 21 m 22 * x d y d z d = x m y m z m ,
x d y d z d = m 00 m 01 m 02 m 10 m 11 m 12 m 20 m 21 m 22 - 1 * x m y m z m ,
F m - p t : x p t = D i s * y d / | | x d y d | | + Wid v * 0.5 y p t = D i s * z d / | | x d y d z d | | + Hei v * 0.5 ,
Wherein:
m 00 m 01 m 02 m 10 m 11 m 12 m 20 m 21 m 22 = c o s ( T v ) s i n ( T v ) 0 - sin ( T v ) c o s ( T v ) 0 0 0 1 * c o s ( P v ) 0 - s i n ( P v ) 0 1 0 s i n ( P v ) 0 cos ( P v ) ;
Wherein:
Widv: video image width
Heiv: video image water is high
xpt: video image element coordinate figure X-component, the upper left corner is 0, and the lower right corner is Widv
ypt: video image element coordinate figure X-component, the upper left corner is 0, and the lower right corner is Heiv
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