CN101257409A - Microscope operating platform based on web services - Google Patents

Abstract

A web serice-based microscope remote control method includes the following steps: (1) XML describing a remote microscope to form an information model; (2) converting the information model into a WSDL interface description document by XSLT technology; (3) according to the interface description document, respectively developing the hardware part of the microscope and developing the web serice part; (4) deploying the developed web serice into a web serice container to supply service to the outside; (5) establishing client-side by AJAX technology or the other relative technology for making the client-side interactive with the web service and controling the remote microscope. The invention provide a method for controling the remote microscope, accordingly, the development of the remote microscope control part can be achieved.

Description

A kind of microscope operating platform based on Web services

Technical field

The present invention relates to a kind of microscope remote operation platform, adjust the telescope to one's eyes by the web webpage and carry out Long-distance Control based on web services.

Background technology

Along with developing rapidly of Internet technology, based on the application model of the Internet also in continuous differentiation.More and more enterprises and government department rely on the Internet and release news and service is provided, and make up the Virtual Organization of striding enterprise or virtual enterprise to realize extensive resource-sharing.But since internet environment be an isomery, dynamically, the distributed computing environment (DCE) of loose coupling, therefore realize that how effectively, easily resource-sharing, business collaboration based on the Internet just become the problem that must solve in the internet development road.

In traditional internet, applications, people are accustomed to using HTML to come descriptor resource and service, but because HTML is not with good expansibility, can not portray data content exactly, be unfavorable for the automation mechanized operation of large-scale commercial applications activity, also be unfavorable for effectively utilizing the resource in the Internet, thereby cause being very restricted based on being applied in when further deeply developing of the Internet.Appearance along with JAVA and XML technology, solved cross-platform and the problem information interoperability, but because traditional distributed objects, middleware Technology all safeguarded separate architecture and agreement and the close coupling of client and server end wherein, make them can not adapt to the demand of dynamic issuing service, can not be implemented in well dynamically, the business collaboration under the loose coupling environment.Therefore, in order to satisfy growing business demand, people propose Web service and solve the problem that next generation internet software is faced.

Definition according to W3C: " Web service is a kind of software application by URI sign, and its interface and binding form can pass through XML standard definition, description and retrieval, and can by XML message and Internet protocol finish with other application directly not alternately ".Can draw from this definition, Web service is not the brand-new technology system, it is to be based upon on original technology, be the traditional extension of component technology under the internet, applications environment, its purpose and effect provide a kind of unified standard and technology, for the Internet software application provides unified functional description and function sharing mechanism.It provides a kind of application level function that carries out between different platform/system automatically to integrate integrated and needed Technical Architecture is handled in automation, for function is integrated integrated and information exchange is handled to provide and realized the basis.

The image splicing is because the angle limitations of apparatus for making a video recording can not once be taken very big picture and produce.The image splicing can solve the restriction by the visual angle of Image-forming instruments such as camera and size, can not once take very big picture and the problem that produces.It utilizes computer to mate automatically, a synthetic secondary wide angle picture, thereby have very wide purposes in actual use.Simultaneously its research has also been promoted the research of associated picture Processing Algorithm.

In the particularly collection and the demonstration of infrared image of military image, Medical image registration, splicing, the simulation of three-dimensional virtual scene ^[5], the compression of digital picture, the aspect of the practical applications such as splicing of aviation, remote sensing image is by very big value.It has become based on an important technology in image drafting (IBR) method, and it also is the important subject in fields such as virtual reality, computer vision, computer graphics, image processing.It all has very important use in the fields such as roaming of the scope of remote sensing image processing, video compression, video frequency searching, increase view and resolution, virtual environment.Its deep development has very big theory and actual application value.

For example in the night vision imaging field, looking low-light still is that infrared imaging equipment all can can't be taken wide-field picture owing to the restriction of apparatus for making a video recording.But in actual applications, many times need the synthetic pictures of a lot of pictures that 360 degree are captured, thereby can make the observer can observe the whole circumstances on every side.Use the image splicing, according to capture apparatus with after the situation of scenery is analyzed on every side, just can contain on every side that the multiple images of 360 degree scenery splice with what take by the shooting equipment that rotates, thus the real-time panoramic picture that obtains the super large visual angle.This plays great role in infrared early warning.

Mostly be A4 or A3 breadth greatly at a lot of office scanners for another example.If use such scanner to remove to scan a secondary A0 or bigger figure, it is powerless just to seem.Though special-purpose large format drum scanning instrument is arranged now, and this scanner belongs to special equipment, cost an arm and a leg, general enterprises and institutions, scientific research institution are unaffordable.

In the digital microscope technology of speaking of previously, but the resolution of the image of microscopically sample imaging and single field of view (visual field) inevitably exist contradiction.One class image often appears in the micro-image, target in this class image is bigger, even under minimum object lens multiplying power, also need a certain target of a plurality of visual fields ability perfect representations, be that the visual field of single observation is smaller with respect to target, in this case, the digital picture of gathering can not obtain the general picture of whole object, has caused the limitation of analyzing.Though can partly address this problem by the more superior hardware device of serviceability, cost is bigger.The Applied Digital image processing method, by gathering a plurality of view field image, adopting the image splicing is feasible solution, and can obtain good effect under the condition cheaply.

In above-mentioned application scenario, several superimposed images need be spliced into a secondary complete image, to enlarge the scope of vision area, the purpose of image splicing that Here it is.In order to carry out the image splicing, must there be the overlapping region in adjacent two width of cloth image boundaries, the identical scene content of this overlapping region representative.The work of image splicing is exactly to search identical content in adjacent two sub-pictures, thereby determines their relative position.Image registration is the key technology of image splicing, not only requires registration accurate but also necessary enough fast in real-time application scenario.Registration technology is very widely in the application of image processing field.In image registration and splicing, the foundation of registration is the similitude between the image, according to the difference of similitude criterion, method for registering images roughly can be divided three classes: based on contour feature, based on the exhaustive search of masterplate coupling with based on frequency domain transform (phase place is relevant).

In the past, the control of equipment always was to use a kind of programming language (also can be to use multiple programming language) to design, and at single address space, realized based on single operating system, and this is generally defined as local calculating.Along with networks development, most of equipment under the distributed environment for example transducer, storage, control terminal and analysis software may be dispersed in different places, exist with loosely-coupled entity, the control of equipment need realize mutual with the different assemblies on residing in the different nodes of network.This has just brought the notion of Distributed Calculation, and it has also introduced a series of brand-new demands for Application Design: in Distributed Application, must produce to call to another address space and (in the local address space, operate although be, another address space can be on certain remote computer, also can be on same main frame); Must realize interoperability with heterogeneous platform and relevant operation system; The ability of understanding and realize communication by suitable line protocol (network) must be arranged; Can cooperate with the various component softwares that use same programming language or different programming language to set up.More than some just in time with distributed environment under the demand of equipment Long-distance Control match.These demands comprise: the first, there is not network, and promptly the developer does not worry the existence of network, they are placed on center of gravity on the control logic of equipment, rather than topology, distributivity or the relevant infrastructure used.Thereby the developer is separated by a software layer-middleware and various hardware platforms, operating system and procotol.The second, there is not the sensation of Long-distance Control, promptly from developer's angle, to calling of remote address space and calling and indifference of local address space.The 3rd, all component has all utilized a kind of all-purpose language-interface language, and accomplishes with concrete programming language irrelevant by interface language.Equipment can be issued its business by IDL, and each apparatus remote effector also can realize the appliance services request by this interface.

From present existing technology, microscopical Long-distance Control often adopts C/S model to realize that specific microscope manufacturer develops separately at special application, and is difficult to realize the multi-person synergy browsing, does not have versatility.Develop at special microscope, hardware development can not finely separate with the user interface part, and development difficulty is big, lacks flexibility.

Summary of the invention

The purpose of this invention is to provide a kind of based on the microscopical method of Web Services technology remote operation, this method has stipulated how to utilize Web Service correlation technique that long-range microscopical logic function is encapsulated as Web service and issue, and utilizes this method fast to carry out the Web service exploitation to dissimilar remote equipments expediently.

For achieving the above object, the present invention takes following technical scheme: a kind of long-range microscope control method based on Web service, and it is characterized in that: it may further comprise the steps:

A, utilize XML to describe, form information model long-range microscope;

B, utilize the XSLT technology to be converted to the WSDL interface information model to describe document;

C, describe document according to interface, the hardware components that adjusts the telescope to one's eyes of distributing is developed, and Web service is partly developed;

D, the Web service of developing is deployed in the Web service container, makes it that service externally is provided;

E, employing AJAX technology or other correlation technique make up client, and itself and Web service are carried out alternately, reach the long-range microscopical purpose of control.

The present invention's advantage compared with prior art is: the present invention is by being described as information model with remote equipment, on the basis of information model, develop the WSDL interface document of equipment, distribute at this interface document then and carry out the programming of hardware components programming and Web service part, the service that externally provides in the service container at last Web service is provided, just can realizes long-range microscopical control operation by technology called Web service such as AJAX long-range.Owing to adopted EML language description remote equipment, formed same interface, so can be efficient and convenient as to develop during the microscope of redeveloping dissimilar.

Description of drawings

Fig. 1 is the flow chart of the inventive method;

Fig. 2 is the long-range microscope information model that utilizes the XML language description.

Embodiment

As shown in Figure 1, the present invention realizes according to following steps.

Step 1

Adopt EML device label language (Equipment Markup Language) thereby the semantic label set of equipment such as description microscope and constraint apparatus for establishing information model such as Fig. 2 of semantic label.Among Fig. 2, be the complete description of carrying out according to configuration of equipment to device hardware.EML has two layers of meaning: the ground floor implication is that the device label language is made up of a series of semantic labels that can describe equipment.The device label language can be found out it is the semantic dictionary of equipment, each label in the dictionary can both be described the equipment aspect, the various aspects of equipment have been contained in this description, for example functional description of the interface of the command history of equipment, equipment, equipment or the like.Second layer implication is the constraint that the device label language has comprised semantic label, and the internal constraint of the existing tag element of this constraint self also has the external constraint between the tag element.The device label language will be achieved as follows target:

1) is easy to set up a system of loose coupling as far as possible.

2) be easy to create a system of exploitation, maintenance and expansion easily.

3) can reduce development time of relevant device as far as possible.

4) can clearly define the interface of software and hardware.

5) can clearly distinguish device description and realization.

The Long-distance Control demand of slave unit is set out, and the device label language comprises following content:

1) composition of device systems.

2) logical order of equipment set

3) command parameter of equipment

4) command format of equipment definition

5) data type of equipment

6) data format of equipment

7) communication mechanism of Equipment Control

8) relevant documentation of instrument

The tag set of device label language is extendible.Each label of markup language has description separately to stress, but they all are again organic wholes, and the general picture of Equipment Control has been reflected in collective.From figure below as can be seen, the device label language description basic procedure of Equipment Control: the command history of equipment, command parameter set etc. mainly lays particular emphasis on the description of control section; Communication mechanism is described the message problem of transmission between computer and the controlled plant; And device data type, data format etc. have been described the result who obtains behind the control appliance.

At long-range microscope control, Equipment Control is mainly video camera and objective table two parts.Wherein the description of each equipment all is made up of three parts: logical order set, the data object that obtains, the document of equipment.The logical order set description of equipment relevant Equipment Control order.Data object has been described information such as the data format that obtains image, storage.Last part is a device's document, and device's document is described out some information of equipment, if these information spinner literal aspects, it the most important thing is help function, seems very important when wanting help when the equipment of use.

The composition of microscopic system is described by label＜EquipmentGroup〉and＜Equipment〉finish, as follows:

<？xml?version＝”1.0”encoding＝”UTF-8”> <EquipmentGroup xmlns＝http://my-equipment.com/namespace xmlns:xsi＝http://www.w3.org/2001/XMLSchema-instance xsi:schemaLocation＝”http://my-equipment.com/namespace D:\WSMIS\XML\EMLSchema.xsd”> <Equipment?id＝”E01”name＝”vidicon”location＝”ACT519” ownership＝”BUAA”> </Equipment> <Equipment?id＝”E02”name＝”control?center”location＝”ACT519” ownership＝”BUAA”> </Equipment> </EquipmentGroup>

As can be seen from the above, whole microscopic system is made up of two parts, and distribution is video camera and objective table controller, and device numbering is respectively E01 and E02, and residing place is ACT laboratory 519, and BJ University of Aeronautics ﹠ Astronautics has ownership.

Microscope can be provided some services by Long-distance Control, and what lean on is the command history of itself stipulating.This set comprises such as＜Command 〉,＜Scripts,＜CommandFormat and＜Steps etc. label form.Can be in command description, to moving of objective table, the focusing of video camera, detailed sign is carried out in catching etc. of image.The following movement directive of putting down in writing objective table is at label＜Command〉attribute in can see the character of movement directive.It is Move that attribute abbrevistion explanation movement directive has its form of writing a Chinese character in simplified form; Attribute docHelp has explained the function of order; Attribute portType has illustrated that computer controls moving of objective table by com port.Label＜Field〉parameter of having described movement directive has two: distribution is Xposition, Yposition.These two parameters for about controlling in the objective table plane, upper and lower translation.Because objective table is to control by stepping motor, parameter should be that unit is " step " integer so.Certainly, these parameters are optional, and under default situation, parameter value is 0.Because the restriction in space, what objective table can not be unlimited moves, so label＜RangeConstraint〉attribute stipulated the interval restriction of moving.Label＜CommandFormat〉stipulated the form that movement directive should have.From＜CommandFormat〉attribute of label can recognize that movement directive has separator, and terminating symbol or the like is arranged.Following is that microscope part control command is described:

<LogicCommandSet> <Command?Id?＝”C001”name＝”Move”abbreviation＝”Move” docHelp＝”This?Command?is?to?move?the?platform”portType＝”COM”> <Field?name＝”Xposition”type＝”Integer”required＝”false” docHelp＝”This?argument?is?to?control?the?platform?along?the?X?axis” unit＝”step”default＝”0”> <RangeConstraint?low＝”0”high＝”300”/> </Field> <Field?name＝”Yposition”type＝”Integer”required＝”false” docHelp＝”This?argument?is?to?control?the?platform?along?the?Y?axis” unit＝”step”default＝”0”> <RangeConstraint?low＝”0”high＝”300”/> </Field> <CommandFormat?name＝”move”ordered＝”true”end＝”<cr>” separator＝”&nbsp:”> <Format?name＝”Command”format＝”move”order＝”true”/> <Format?name＝”X”format＝”％d”order＝”false” header＝”X＝”/> <Format?name＝”Y”format＝”％d”order＝”false”header＝”X＝”/>

Microscopical control final purpose is to obtain micro-image analysis, so the description of micro-image data is seemed very important.Following is the description of view data of adjusting the telescope to one's eyes:

<ImageData> <ImageFormat> <BMP?Resolution＝”24”ResolvingRatio＝”800*600” Size＝”4M”/> <JPEG?ResolvingRatio＝”800*600”Size＝”500K”/> </ImageFormat> <SpectrumRange> <MaxLength>560nm</MaxLength> <MinLength>400nm</MinLength> </SpectrumRange> <Archive?Destination?path＝”E:\aftreg\”> </ImageData>

Step 2

Utilize the XSLT technology to be converted to the WSDL interface information model and describe document.Convert information model to the WSDL interface and describe the method for document and can adopt and describe the manual WSDL of formation interface by information model and describe document, or convert the WSDL interface automatically to by the WSTL crossover tool and describe document.

Step 3

There has been the WSDL interface to describe document, next just can have developed realization at hardware controls part and Web service two parts.The bottom layer driving that development approach mainly utilizes equipment vendors to provide for the hardware components exploitation realizes the controlled function of the needed hardware that adjusts the telescope to one's eyes of user oneself, and these functions will be used to Web service and call; The Web service exploitation is according to the interface in the WSDL interface document, and the hardware capability that hardware development is partly realized is packaged into Web service.

Hardware controls realizes the hardware controls function according to the description of device command.The Web service part is pressed device context, uses the XML language compilation to go out Web service and describes (WSDL).WSDl is the service describing of Long-distance Control of adjusting the telescope to one's eyes, and it has comprised the interface of service and the realization definition of service.By the foundation of WSDL, assembly will no longer be confined to local application, and it has obtained plugging an interface of " service bus ".It below is the MCS.wsdl document of microscope control.

<message?name＝“Equipment.MoveToXAxisPosition”> <port?name＝”Position”type＝”xsd:short”> </message>

In above-mentioned inventory,＜message〉element quotes in the WSDL document＜types〉type of definition in the part.Be included in＜message data type in the element is abstract.

<portType?name＝“EquipmentSoapPort”> <operation?name?＝“MoveToXAxisPosition”parameterOrder ＝”Postion”> <input?message＝”wsdlns:Equiment.MoveToXAxisPosition”/> <output message ＝” wsdlns:Equiment.MoveToXAxisPositionResponse”/> </operation> </portType>

In describing above,＜/portType〉element specifies the subclass of the activity that the Web service end points supported.In some sense,＜/portType〉element provides a unique identifier for the one group of activity that can carry out on single endpoint.＜operation〉operation of element representation.This element is an abstract definition of a certain activity of service support.＜operation〉label comes the name of definition of activities by the name attribute, by＜input〉daughter element defines input message, and by＜output〉daughter element defines output message.＜input 〉,＜output element all quote in same WSDL document or document that certain imports into, define＜message element.＜message〉the element message that can represent request, respond or make mistakes.

Step 4

The Web service of developing is deployed in the Web service container, makes the microscope service that service externally is provided. after having finished the description of microscope control service, next service is disposed.Be easy in service arrangement to the web application server, native system with service arrangement in the Runtime container of ACT development in laboratory.Client is according to the WSDL document description, forms the mapping of local code, adopts Javascript to generate the Web service client in native system, by and container between soap message mutual, realize microscopical Long-distance Control.

Step 5

Adopt AJAX technology or correlation technique to make up client, client and Web service are carried out alternately, reach the long-range microscopical purpose of control.

Claims (4)

1, a kind of microscope long-range control method based on Web service, it is characterized in that: it may further comprise the steps:

(1) utilizes XML to describe to long-range microscope, form information model;

(2) information model is utilized the XSLT technology be converted to the WSDL interface and describe document;

(3) describe document according to the WSDL interface, the hardware components that adjusts the telescope to one's eyes is respectively developed, and Web service is partly developed;

(4) Web service of developing is deployed in the Web service container, makes the microscope service that service externally is provided;

(5) adopt AJAX technology or correlation technique to make up client, client and Web service are carried out alternately, reach the long-range microscopical purpose of control.

2, the microscope long-range control method based on Web service according to claim 1 is characterized in that: in above-mentioned (1) step, based on the XML grammer, utilize the EML language that long-range microscope is described, form information model, the method for its description is as follows:

(1) description of microscope composition is described out this microscopical hardware and is formed;

(2) microscopical logical order is described, and has comprised the description of command parameter, command format, is the set that puts on all orders on the microscope hardware device;

(3) description of microscope data object has comprised data type and data format, has described all data types and the form that can obtain by microscope;

(4) communication mechanism of this device hardware control section has been described in the description of the communication mechanism of microscope control;

(5) microscopical relevant documentation has comprised relevant help document, supports for developer's subsequent development provides relevant.

3, the microscope long-range control method based on Web service according to claim 1, it is characterized in that: in above-mentioned (2) step, convert information model to the WSDL interface and describe the method for document and adopt and to describe manual formation WSDL interface by information model and describe document, or convert the WSDL interface automatically to by the WSTL crossover tool and describe document.

4, the microscope long-range control method based on Web service according to claim 1, it is characterized in that: in above-mentioned (3) step, according to the WSDL interface document is described, the method that the hardware components that adjusts the telescope to one's eyes is respectively developed is: the bottom layer driving that the hardware components exploitation mainly utilizes equipment vendors to provide realizes the controlled function of the needed hardware that adjusts the telescope to one's eyes of user oneself, and these functions will be used to Web service and call; The Web service exploitation is according to the interface in the WSDL interface document, and the hardware capability that hardware development is partly realized is packaged into Web service.

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