CN105592294A - VSP excited cannon group monitoring system - Google Patents

VSP excited cannon group monitoring system Download PDF

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Publication number
CN105592294A
CN105592294A CN201410563282.6A CN201410563282A CN105592294A CN 105592294 A CN105592294 A CN 105592294A CN 201410563282 A CN201410563282 A CN 201410563282A CN 105592294 A CN105592294 A CN 105592294A
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image
vsp
monitoring
camera
excites
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CN105592294B (en
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钱雪文
贺跃宏
梅有仁
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China Petroleum and Chemical Corp
Sinopec Geophysical Research Institute
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China Petroleum and Chemical Corp
Sinopec Geophysical Research Institute
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Abstract

The invention provides a VSP excited cannon group monitoring system, and belongs to the field of geophysical prospecting field monitoring. The VSP excited cannon group monitoring system comprises a front-end camera device, a data transmission system, an image geometric correction module, an image stitching module, an integrated control system, a terminal display screen and a computer. The front-end camera device shoots the field situation of a VSP excited cannon group into an analog video signal. The data transmission system transmits the analog video signal acquired by the front-end camera device to the image geometric correction module. The image geometric correction module processes the analog video signal to obtain a real-time inverted surface digital orthographic image, and then transmits the surface digital orthographic image to the image stitching module. The image stitching module completes image stitching through two-dimensional vertical and horizontal displacement images and by overlapping corresponding image points.

Description

A kind of VSP excites big gun group's monitoring system
Technical field
The invention belongs to geophysical exploration on-site supervision field, be specifically related to a kind of VSP and excite big gun group's prisonControl system, is applied to VSP well logging job site. Carry out at bull setting simultaneously, and dangerous product behaviourUnder the special sight of doing, can provide a VSP and excite the on-the-spot instant geographical space sight of big gun group.
Background technology
VSP (VerticalSeismicProfiling), i.e. vertical seismic profiling (VSP), is a kind of seismological observationSystem, it is corresponding with the seismic profile of common ground observation. Vertical seismic profiling (VSP) method is near earth's surfaceThe upper earthquake-wave-exciting of some points, on some multistage multicomponent geophone stations of arranging along wellhole different depthObserve. The observed pattern of VSP mainly contain at present zero well spacing (zero is inclined to one side), non-zero well spacing (non-zero is inclined to one side),WALKAWAY, 3D-VSP etc. With the seismic profile comparison of ground observation, VSP ground shot point is concentrated, modelEnclose greatly, shape in groups, big gun group excites, the more difficult control of safe condition. VSP on-site supervision, emphasis is to excite big gunGroup's on-site supervision. Fig. 1 is the zero inclined to one side and inclined to one side seismic observation system of non-zero ground schematic diagram.
The on-site supervision of conventional VSP engineering is to rely on human eye to complete substantially. The site safety of shot point,Prescribe medicine wiring, excite the instrument cab transmission to VSP data acquisition center by radio station such as situation. GunnerAway from shot hole more than 50 meters, less at hypsography or visual angle, woods City Regions in the time exciting, must large modelEnclose and draw warning line, blow the alert whistle and run back and forth, prompting is near the safety of the motive objects of shot point. In the time that big gun group excites,The scope that shot point involves is larger, and staff has to run around all the time wears him out, and has a strong impact on working efficiency and has potential safety hazard.
In present VSP team, the diverse location at shot point having is placed probe, because scope is large, does not haveCarry out the splicing of many camera lenses, can not intactly observe the panorama within the scope of whole big gun group, and impalpable on the spotPosition and north point to.
Summary of the invention
The object of the invention is to solve the difficult problem existing in above-mentioned prior art, provide a kind of VSP to excite big gunGroup's monitoring system, can be in the construction of VSP Well Logging Engineering, and dynamic monitoring excites the situation within the scope of big gun group,The orthography of real time inversion earth's surface sight. Image can arrange northern direction-pointing function. Show eventually by monitoring systemEnd, can see each diverse location image seamless spliced effect after correcting, and makes project team's technologyPersonnel and administrative staff can monitor the overall picture that excites big gun group space intuitively, thereby minimizing accident occurs, and improvesOperating efficiency.
The present invention is achieved by the following technical solutions:
VSP excites big gun group's a monitoring system, comprises front end camera head, data transmission system, imageGeometric correction module, image joint module, complex control system, terminal display screen and computer;
Described front end camera head excites big gun group field condition to take VSP becomes analog video signal;
The analog video signal that described data transmission system obtains described front end camera head is transferred to described shadowPicture geometric correction module;
Described image geometry is corrected module and analog video signal is processed to the earth's surface numeral that obtains real time inversionOrthography, is then transferred to image joint module;
Described image joint module completes image by the displacement image of direction in length and breadth and the overlapping corresponding image points of two dimensionSplicing;
Described complex control system realizes described computer to front end camera head, data transmission system, imageThe control including interface, communications protocol, input and output between geometric correction module, image joint moduleSystem;
Described terminal display screen becomes analog signal to show on display screen digital data conversion.
Described front end camera head comprises video camera, zoom lens, high-precision GPS receiver, control point;
Described camera is taken field condition to become analog video signal by in-built CCD and auxiliary circuit,Through coaxial cable or wireless transmission;
Described high-precision GPS receiver is measured the three-dimensional coordinate of camera, as the spatial data of video recording analysis;
Described zoom lens can arrange focal length value and high accuracy focusing;
Described control point is as zoom lens focusing.
On described control point, refractive body is set, improves the focusing precision of video camera.
Described front end camera head further comprises temperature sensor, humidity sensor, The Cloud Terrace, protective coverAnd decoder;
Described temperature sensor, humidity sensor are for temperature, humidity in acquisition environment;
Described The Cloud Terrace is used for installing camera, realizes the horizontal and vertical adjustment of shooting angle;
Camera and zoom lens are arranged in described protective cover;
Described decoder can be realized and use microcomputer interface through software control zoom lens, The Cloud Terrace.
Described data transmission system comprises video distributor, joins, to front end camera head for video counts componentThe image of shooting with video-corder carries out real-time Transmission.
Described image geometry is corrected module by the gps antenna three of camera parameter, high-precision GPS receiverThe three-dimensional coordinate at dimension coordinate and control point is as input, by the distortion of space analysis method remedial frames, ratio contractingPut and north orientation pointer, obtain the earth's surface digital orthoimage of real time inversion.
Excite at VSP on four angles of group big gun and all lay front end camera head, four group images of acquisition mutually itBetween be provided with 30 percent lap, control the region of same place when image joint as search; Four groupsImage synchronous transmits data to background computer.
Described Image Mosaics module finds the same place between adjacent image and aims at image same place, by twoThe displacement of direction in length and breadth image, the overlapping corresponding image points of dimension, complete the splicing of image.
Aim at image same place and adopt the Image registration based on feature or the Image registration based on gray scale; When adoptingWhile using based on image feature registration, heighten the contrast acutance of video, improve judgement and excite Bao Qun district characteristic pointSpeed; When based on image greyscale registration, reduce video sharpness, gray-level is increased, registration is more accurate.
Described terminal display screen comprises acquisition instrument car monitor screen, well site CEO monitor screen and official's QHSE monitoringScreen.
Compared with prior art, the invention has the beneficial effects as follows:
1, native system adopts many camera lens monitoring big gun groups, and scope is large, avoids the landform dead angle of single-lens monitoring.
2, by aerial how much analytic methods, change central projection is orthogonal projection, and the length of correcting picture becomesShape, the displaying ratio between unified video image, shows many lens videos one, picture associative perceptionBy force, and image there is northern orientating function.
3, in oil exploration field data acquisition, earthquake stimulation relates to a lot of safety factors. Log well at VSPScene, there is condition and the necessity of video monitoring in Bao Qun district. The present invention passes through the video analog signal of many camera lenses,The orthography of inverting VSPBao Qun district real terrain, for field data collection instrument cab, well site CEO andOfficial QHSE provides the powerful measure of monitoring.
Brief description of the drawings
Fig. 1 VSP observation system distribution on ground schematic diagram
Fig. 2 VSP excites big gun group monitoring system schematic diagram
The flow chart that Fig. 3 image geometry is corrected
The flow chart of Fig. 4 image joint module
The operation workflow of Fig. 5 VSP big gun group monitoring system
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in further detail:
Excite big gun group, refer to zero well spacing (zero is inclined to one side), non-zero well spacing (non-zero is inclined to one side) in the observed pattern of VSPThe array shot hole that excites of ground. The size of array according to the some distance of the distance of inspection well section, downhole receiving andThe quantity of three-component geophone in well and determining.
1, the composition of the monitoring system at VSP scene
The monitoring system at VSP scene by front end camera head, data transmission system, image geometry correct module,The compositions such as image joint module, complex control system, terminal display screen, computer, as shown in Figure 2, toolBody is as follows:
1), front end camera head. Mainly comprise camera, supporting high-precision GPS receiver, varifocal mirrorHead, Temperature Humidity Sensor, The Cloud Terrace, protective cover, decoder etc. Camera is by in-built CCD and auxiliaryCircuit is taken field condition to become analog video signal, through coaxial cable or wireless transmission. High-precision GPSReceiver is measured the three-dimensional coordinate of seat in the plane, as the spatial data of video recording analysis. Zoom lens can arrange focal lengthValue and high accuracy focusing. Temperature, humidity in temperature, the detectable environment of humidity sensor, thus ensure inner goodGood physical environment. The Cloud Terrace, protective cover provide suitable working environment to video camera and camera lens, and can realizeThe horizontal and vertical adjustment of shooting angle. Decoder is the nucleus equipment of The Cloud Terrace, lens control, can by itRealize and use microcomputer interface through software control camera lens, The Cloud Terrace.
2), data transmission system: video distributor, join for video counts component. Zero inclined to one side big gun group is from VSP instrumentIt is nearer that device equipment gathers car, adopts coaxial cable transmission; The inclined to one side big gun group of non-zero gathers car 3 from VSP instrument and equipmentKilometer left and right, adopts wireless way for transmitting. Hop requires the image that front-end camera is shot with video-corder to carry out realityIn time, transmits, and requires transmission to have loss little simultaneously, reliably transmission quality.
3), geometric rectification of imagery module, this is the key component of VSP monitoring system. No. 1,2 of ordering of big gun groupNumber, No. 3, No. 4 video camera points (when actual use, can arrange more or less video camera as requiredPoint, but general 4 be optimized) a high-precision GPS receiver of the each configuration in position, and corresponding ground hasA control point, as video camera focusing. Camera point and control point all have accurately three-dimensional coordinate. Taking the photographIn the definite situation of camera focal length, size and the geometry deformation of the image of taking the photograph are determined. Camera parameters,Gps antenna three-dimensional coordinate and control point three-dimensional coordinate are inputted by computer software control module, as initializationParameter. After system starts, video camera four tunnel real-time Simulation signals enter acquisition channel by video distributor, andAfter being converted into numerical data by proprietary technology, enter computer processing system. Computer-processing software passes through space(aerial analytic method is exactly to express certain unknown quantity by the formula that is all known quantity to analytic method. In measurementConventionally solve distortion, error and plotted point position, front and back with known control point coordinates, thereby before inverting distortionAir position) remedial frames distortion, proportional zoom and north orientation pointer, obtain the earth's surface numeral of real time inversionOrthography. Excite at VSP and on four angles of group big gun, lay four groups of video cameras and (comprise that high-precision GPS receivesMachine and ground control point), four group images are provided with 30 percent lap each other, as search shadowWhen picture splicing, control the region of characteristic point of the same name. Four group images are synchronously to background computer transmission data. Flow processBlock diagram is as Fig. 3.
4), Image Mosaics module. The splicing emphasis of image is just to locate same place between adjacent image (againClaim characteristic point of the same name, corresponding image points, refer to have on ground the point position of obvious characteristic, on adjacent image, all existBe characteristic point of the same name). By the displacement of the direction in length and breadth image of two dimension, overlapping corresponding image points, completes imageSplicing. Aiming at the process of image same place cries it for Image registration here for the time being. The process ratio of Image registrationMore complicated, the main algorithm adopting has two kinds:
(1), the Image registration based on feature. Its basic thought is: first use the adjacent shadow of certain feature extractionPoint, line, surface in picture; Then extracted feature is carried out to parametric description; The last parameter value with featureFor according to carrying out characteristic point search of the same name, then obtain corresponding image points. The major advantage of this method is: canWith with one fast algorithm realized, and make mistakes and to lose relevant possibility less. Main not enoughThe precision that is registration is lower, just relevant usually used as one, and initial value is provided for essence is relevant.
(2), the Image registration based on gray scale. Its main feature is: based on treating of reference point placeThe image greyscale of zonule is determined adjacent corresponding image points. Suppose has an impact point on left picture, taking it as inThe heart is got the target area of a suitable big or small pixel, and the center picture point of target area is impact point. The weight of right pictureFolded region is divided into several search subareas, according to the impact point on left picture, by comparing each subarea and target areaThe intensity profile in territory, and calculate correlation values, in the time that correlation values is got maximum, can determine the same of left and right imageName point. FB(flow block) as shown in Figure 4.
5), complex control system: complex control system is between each system of background computer control and moduleThe software and hardware technology of interface, communications protocol, input and output etc. Technical requirement: exchanges data smoothness, connectsNothing conflict between mouthful.
6), terminal display screen, digital data conversion become analog signal show screen display, technical requirementThe current techique standard in field for this reason. Terminal display screen comprises acquisition instrument car monitor screen, the well site in Fig. 2CEO monitor screen and official's QHSE monitor screen.
7), computer (being the terminal computer control in Fig. 2). Operation system that can be smooth generalComputer. Image processing software, system controlling software, interface card and drive software, large are installed on computerCapacity hard disk etc.
2, the operation workflow that VSP excites big gun group monitoring system as shown in Figure 5, comprises the following steps:
(1) checkout facility power supply, checks the connection status of each system module;
(2) console regulates the direction of camera, makes the highlighted mark in control point in focus, reads focal length;
(3), by the gps coordinate of camera, control point coordinate and focal length value input parameter window, initialize systemSystem;
(4) background computer software, corrects video distortion. If orographic condition causes image deletion, adjustThe position of camera;
(5) software systems fast algorithm is determined adjacent image same place, or exact algorithm determines that adjacent image is sameName point;
(6) measurement image scale and northern pointer, two-dimensional directional displacement is joined adjacent image same place imageAccurate;
(7) just aobvious, debugging of VSP group's big gun four-barrel one orthography, test acquisition.
3, improve the measure that quality monitoring is taked
1), four camera points of big gun group are located at four angles, increase monitoring range as far as possible.
2), increase the overlapping percentage of adjacent image, be conducive to choosing of characteristic point of the same name.
3), on control point, preset refractive body, the focusing precision of raising video camera.
4), during based on image feature registration, heighten the contrast acutance of video, improve judgement and excite Bao Qun district spyLevy speed a little; During based on image greyscale registration, reduce video sharpness, gray-level is increased, registration morePrecisely.
VSP of the present invention excites big gun group's monitoring system by front end camera head, data transmission system, imageThe compositions such as geometric correction module, image joint module, complex control system, terminal display screen, computer.Excite the three-dimensional coordinate of big gun group region Control point and video camera according to video camera GPS three-dimensional coordinate, VSPFocal length, corrects the geometry deformation of photographic image by aerial analytic method; Utilize adjacent camera image overlap partCharacteristic point of the same name, make two width images seamless spliced, obtain the orthography in complete Qun Bao district.
Technique scheme is one embodiment of the present invention, for those skilled in the art,The invention discloses on the basis of application process and principle, be easy to make various types of improvement or distortion,And be not limited only to the described method of the above-mentioned detailed description of the invention of the present invention, therefore previously described mode is justPreferably, and do not there is restrictive meaning.

Claims (10)

1. VSP excites big gun group's a monitoring system, it is characterized in that: described VSP excites big gun group's monitoring systemComprise front end camera head, data transmission system, image geometry correction module, image joint module, comprehensiveControl system, terminal display screen and computer;
Described front end camera head excites big gun group field condition to take VSP becomes analog video signal;
The analog video signal that described data transmission system obtains described front end camera head is transferred to described shadowPicture geometric correction module;
Described image geometry is corrected module and analog video signal is processed to the earth's surface numeral that obtains real time inversionOrthography, is then transferred to image joint module;
Described image joint module completes image by the displacement image of direction in length and breadth and the overlapping corresponding image points of two dimensionSplicing;
Described complex control system realizes described computer to front end camera head, data transmission system, imageThe control including interface, communications protocol, input and output between geometric correction module, image joint moduleSystem;
Described terminal display screen becomes analog signal to show on display screen digital data conversion.
2. VSP according to claim 1 excites big gun group's monitoring system, it is characterized in that: described front end is taken the photographComprise video camera, zoom lens, high-precision GPS receiver, control point as device;
Described camera is taken field condition to become analog video signal by in-built CCD and auxiliary circuit,Through coaxial cable or wireless transmission;
Described high-precision GPS receiver is measured the three-dimensional coordinate of camera, as the spatial data of video recording analysis;
Described zoom lens can arrange focal length value and high accuracy focusing;
Described control point is as zoom lens focusing.
3. VSP according to claim 2 excites big gun group's monitoring system, it is characterized in that: in described controlOn point, refractive body is set, improves the focusing precision of video camera.
4. the monitoring system that excites big gun group according to the VSP described in claim 2 or 3, is characterized in that: before describedEnd camera head further comprises temperature sensor, humidity sensor, The Cloud Terrace, protective cover and decoder;
Described temperature sensor, humidity sensor are for temperature, humidity in acquisition environment;
Described The Cloud Terrace is used for installing camera, realizes the horizontal and vertical adjustment of shooting angle;
Camera and zoom lens are arranged in described protective cover;
Described decoder can be realized and use microcomputer interface through software control zoom lens, The Cloud Terrace.
5. VSP according to claim 4 excites big gun group's monitoring system, it is characterized in that: described data passCommunication system comprises video distributor, joins for video counts component, and the image that front end camera head is shot with video-corder carries outReal-time Transmission.
6. VSP according to claim 5 excites big gun group's monitoring system, it is characterized in that: described image is severalWhat corrects module by gps antenna three-dimensional coordinate and the control point of camera parameter, high-precision GPS receiverThree-dimensional coordinate as input, by the distortion of space analysis method remedial frames, proportional zoom and north orientation pointer,Obtain the earth's surface digital orthoimage of real time inversion.
7. VSP according to claim 6 excites big gun group's monitoring system, it is characterized in that: excite at VSPOn four angles of group's big gun, all lay front end camera head, four group images of acquisition are provided with 3 percent each otherTen lap, controls the region of same place when image joint as search; Four group images are synchronously to backstageComputer transmission data.
8. VSP according to claim 7 excites big gun group's monitoring system, it is characterized in that: described image is spelledConnection module finds the same place between adjacent image and aims at image same place, by the position of direction in length and breadth of two dimensionMove image, overlapping corresponding image points, complete the splicing of image.
9. VSP according to claim 8 excites big gun group's monitoring system, it is characterized in that: aim at image sameName point adopts the Image registration based on feature or the Image registration based on gray scale; When adopting based on image featureWhen registration, heighten the contrast acutance of video, improve and judge the speed that excites Bao Qun district characteristic point; When based on shadowWhen picture gray scale registration, reduce video sharpness, gray-level is increased, registration is more accurate.
10. VSP according to claim 1 excites big gun group's monitoring system, it is characterized in that: described terminalDisplay screen comprises acquisition instrument car monitor screen, well site CEO monitor screen and official's QHSE monitor screen.
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107870347A (en) * 2016-09-28 2018-04-03 中国石油化工股份有限公司 Vertical seismic profiling (VSP) zero bias excite the automatic recognition system of big gun group
GB2561329A (en) * 2016-12-05 2018-10-17 Gaist Solutions Ltd Method and system for creating images

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CN102510475A (en) * 2011-10-21 2012-06-20 上海交通大学 Automobile panoramic imaging device and method based on infrared calibration

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WO2001015081A2 (en) * 1999-08-20 2001-03-01 Hebrew University Of Jerusalem System and method for rectified mosaicing of images recorded by a moving camera
US20020163582A1 (en) * 2001-05-04 2002-11-07 Gruber Michael A. Self-calibrating, digital, large format camera with single or mulitiple detector arrays and single or multiple optical systems
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CN107870347A (en) * 2016-09-28 2018-04-03 中国石油化工股份有限公司 Vertical seismic profiling (VSP) zero bias excite the automatic recognition system of big gun group
GB2561329A (en) * 2016-12-05 2018-10-17 Gaist Solutions Ltd Method and system for creating images

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