WO2022237117A1 - 交互式电子白板的触摸控制方法、系统和可读介质 - Google Patents
交互式电子白板的触摸控制方法、系统和可读介质 Download PDFInfo
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/048—Interaction techniques based on graphical user interfaces [GUI]
- G06F3/0487—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser
- G06F3/0488—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser using a touch-screen or digitiser, e.g. input of commands through traced gestures
- G06F3/04883—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser using a touch-screen or digitiser, e.g. input of commands through traced gestures for inputting data by handwriting, e.g. gesture or text
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- G—PHYSICS
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- G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
- G06F3/147—Digital output to display device ; Cooperation and interconnection of the display device with other functional units using display panels
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- G—PHYSICS
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- G06T11/00—2D [Two Dimensional] image generation
- G06T11/80—Creating or modifying a manually drawn or painted image using a manual input device, e.g. mouse, light pen, direction keys on keyboard
Definitions
- the invention relates to the field of touch interaction, in particular to a touch control method, system and readable medium of an interactive electronic whiteboard.
- Electronic whiteboards have been widely used in video conferencing and teaching equipment.
- the electronic whiteboard will retain writing marks to complete the actual information interaction on the spot, but in actual use, for the electronic whiteboard in meetings or teaching, it is often necessary to use simple strokes to quickly convey the real intention of the operator.
- the existing electronic whiteboard control only the operation traces of the operator on the electronic whiteboard can be guaranteed to be displayed, and the operation traces of the operator cannot be standardized, resulting in poor layout and affecting the effect of meetings or teaching.
- the purpose of the present invention is to provide a touch control method, system and readable medium of an interactive electronic whiteboard, so as to solve the problem that the operator's operation traces cannot be displayed in a standardized manner in the current interactive electronic whiteboard. Problems caused by poor typography affecting conference or teaching effects.
- a touch control method for an interactive electronic whiteboard A quasi-object database is stored in the interactive electronic whiteboard, and the quasi-object database contains several pseudo-object data.
- the control method includes:
- the comparison analysis operation uses a Euclidean distance function or a cosine distance function to perform similarity calculation;
- the comparison and analysis operation includes:
- the touch feature vector and the contour feature vector are compared and analyzed using a Euclidean distance function or a cosine distance function to obtain a similarity value for the quasi-object data.
- the type of quasi-object data includes one or more of physical images, physical text names, cartoon images, standard images, and standard vector images;
- the displaying the approximate skeuomorphic data on the interactive electronic whiteboard specifically includes:
- the sorted approximate skeuomorphic data are displayed in a predetermined format.
- the predetermined format is embedded or floating.
- the click operation signal includes clicking a single selection and/or sliding multiple selections.
- a touch control system for an interactive electronic whiteboard using the touch control method for an interactive electronic whiteboard comprising a processing module, a sensing module connected to the processing module, a storage module connected to the processing module, and a display module connected to the processing module;
- the sensing module is used to receive touch operation signals and click operation signals acting on the touch screen of the interactive electronic whiteboard and send the processing module;
- the storage module is used to store the quasi-object database
- the processing module is configured to receive the touch operation signal to form a touch track, and drive the display module to display the touch track; and is also used to screen and obtain multiple objects in the quasi-object database based on the touch track according to a comparison analysis operation. It is also used to determine the selected approximate simulating data according to the click operation signal; the selected approximate simulating data is replaced by the touch track and displayed on the touch screen through the display module.
- a computer-readable medium in which a computer program is stored, and the program implements the touch control method of an interactive electronic whiteboard after being executed by a processor.
- the touch control method, system and readable medium of the interactive electronic whiteboard provided by the present invention have the following beneficial effects:
- the touch control method provided by the present invention is based on receiving the touch operation signal acting on the touch screen, and then forming a touch track and synchronously displaying it in real time; at the same time, comparing and analyzing the touch track in the quasi-object database, and then screening to obtain multiple Approximate quasi-object data and display it, wait for the click operation signal to confirm the selected approximate quasi-object data and replace the touch track display, and can push similar pictures according to the simple strokes of the operation, without frequent uploading or searching for key information needed , improved meeting information communication;
- the touch control system uses the sensing module to receive the touch operation signal, and then uses the processing module to form a touch trajectory according to the touch operation signal, and synchronously displays it in real time; at the same time, the touch trajectory is compared and analyzed in the quasi-object database , and then screen and obtain a plurality of approximate quasi-object data and display them, wait for the click operation signal sent by the sensing module to determine the selected approximate quasi-object data and replace the touch track display, which can be pushed according to the simple strokes of the operation Similar pictures do not need to upload or search for key information frequently, which improves the communication of meeting information.
- Fig. 1 is a flow chart of the touch control method provided by the present invention
- Fig. 2 is a structural block diagram of the touch control system provided by the present invention.
- the present invention provides a touch control method for an interactive electronic whiteboard
- the interactive electronic whiteboard stores a quasi-object database
- the quasi-object database contains several quasi-object data
- the The quasi-object database can be stored in the storage part of the interactive electronic whiteboard in advance.
- This storage method can satisfy the data call of an interactive electronic whiteboard; the quasi-object database can also be stored in the storage part of the server.
- the interactive electronic whiteboard is connected to the server and invokes the quasi-object database.
- This storage method can satisfy the data call of all interactive electronic whiteboards connected to the server; it can also be realized by calling the interactive electronic whiteboard through network cloud storage , this kind of storage method can meet the data calls of all interactive electronic whiteboards connected to the network cloud storage; further, the data source of the quasi-object data is the hardware, imagination, etc. required by animals, plants, buildings, and human activities. Common things in the field of production and life, such as abstract concepts to be expressed, can of course be customized according to the needs of different fields. For example, according to the meeting requirements for a certain production workshop, some machines and machine parts of the production workshop can be customized. Skeuomorphic data, the control method includes:
- the touch operation signal acting on the touch screen of the interactive electronic whiteboard, form and display the touch track; further, the touch operation signal includes pressure-sensitivity data, touch width data, touch coordinate data; the touch track is according to the touch width The width of the data presentation and the position point presented by the touch coordinate data are displayed.
- the touch operation signal is acquired continuously, and the continuous acquisition is to acquire the target coordinate data once at a predetermined time interval.
- the predetermined time is preferably 1 ms;
- the touch width data is the maximum value of the distance data between any two point coordinates among the point coordinates touched at the same time on the touch screen; the touch coordinate data is the coordinate value when the touch point coordinates are within the preset range value .
- the interactive electronic whiteboard has at least one sensing module for receiving touch operation signals acting on the touch screen of the interactive electronic whiteboard; further, the interactive electronic whiteboard has a touch screen and a pressure sensor, and the pressure sensor Detect pressure-sensitivity data, and detect touch width data and touch coordinate data through the touch screen; further, the pressure sensor and the touch screen are commonly used pressure sensing devices and touch screen devices in the field of interactive electronic whiteboard technology. Further, in this step, the interactive electronic whiteboard can also detect whether there is a touch operation signal on the touch screen, and when there is a touch operation signal, start to generate the touch track; further, when the pressure sensitivity data is less than the pressure sensitivity When the value is set, the touch track will not be displayed. When the touch width is greater than the width setting value, the width of the touch track will be displayed according to the width setting value.
- the similarity value for each quasi-object data is obtained according to the comparison analysis operation; wherein, the comparison analysis operation uses the Euclidean distance function or the cosine distance function to perform similarity calculation; further, in this implementation
- the comparison and analysis operation can be performed using image comparison algorithms commonly used in the art, for example, the touch track may first be formed into a vector diagram (based on the fact that the touch track is generally in the form of a vector, so the conversion method is not limited ), and then process and analyze the obtained vector diagram and quasi-object data according to a preset image comparison algorithm.
- topological classification can be performed on the quasi-object database, which can be first-level classification, second-level classification, ... until a certain precise category, for example, it can be divided into first-level classification into animals, plants, buildings, and animals.
- the second-level classification as fish, reptiles, insects, etc., and then conducts the third-level classification to find the commonness and subdivide it; when comparing, first carry out the commonality comparison of the first-level classification, and then carry out the second-level classification In the end, only part of the quasi-object data needs to be compared to achieve accurate search. Further, the comparison and analysis operation is performed in real time, that is, the comparison and analysis operation is performed as long as there is a touch track on the interactive electronic whiteboard.
- d(x, y) is a similarity value
- x i is the i-th element in the feature vector of the touch track
- y i is the i-th element in the feature vector between the quasi-object data participating in the comparison
- N is the total number of feature vectors.
- d(x, y) is a similarity value
- x i is the i-th element in the feature vector of the touch track
- y i is the i-th element in the feature vector between the quasi-object data participating in the comparison
- N is the total number of feature vectors.
- a plurality of approximate quasi-object data is obtained by screening; wherein, the quasi-object data whose similarity value is greater than a predetermined value is used as approximate quasi-object data; specifically, the setting of the predetermined value is determined according to the distance function used, for example, when using the Euclidean
- the distance function calculates the similarity value
- the first predetermined ratio of the largest similarity value among all the similarity values can be used as the predetermined value, which can ensure that a certain amount of similar quasi-object data will be screened.
- the predetermined value is preferably 0.7-0.9, more preferably 0.8, which can ensure that the approximate quasi-object data can be screened reliability.
- the display is displayed on the touch screen of the interactive electronic whiteboard, and further, the approximate pseudo-object data displayed follows the touch track changes, and further, changes can also be made according to the data of the comparison and analysis operation.
- the display position of the approximate quasi-object data can be defined as a fixed area on the electronic whiteboard, or can be determined along with the position of the touch track, and is preferably operated as a margin predetermined in a certain direction from the touch track. The distance can be displayed.
- the selected approximate skeuomorphic data is displayed instead of the touch track.
- the comparison analysis operation includes:
- the acquisition of the touch feature vector is a common technique for acquiring feature vectors of vector graphics in image feature vector technology,
- the feature vector generation technology based on SIFT is not specifically limited in the present invention.
- the outline feature vector of the quasi-object data is an image feature vector technology is the same as the acquisition method of the touch feature vector, the difference is that the acquisition of the feature vector for the quasi-object data is performed on the outline of the graph, If it is a text, use an approximate vector diagram.
- the touch feature vector and the contour feature vector are compared and analyzed using a Euclidean distance function or a cosine distance function to obtain a similarity value for the quasi-object data.
- the similarity comparison algorithm may also use methods such as pixel point comparison, center of gravity comparison, projection comparison, and block comparison. Specifically, no matter what kind of similarity comparison algorithm is used, its known technical solution is used, which is not limited in the present invention.
- the type of quasi-object data includes one or more of physical images, physical text names, cartoon images, standard images, and standard vector images; further, the physical image is a certain An image of a real entity; the text name of the physical object is the common name of a certain real entity, for example, drawing an arrow ⁇ on the electronic whiteboard will recognize the word "arrow"; the cartoon image is the entity or A cartoon image of a virtual thing; the standard image is to establish a well-known image of a certain thing in common cognition, for example, the physical image of the sun or the standard cartoon image can be unified, and of course a variety of standard images can also be used.
- the displaying the approximate skeuomorphic data on the interactive electronic whiteboard specifically includes:
- the sorted approximate skeuomorphic data are displayed in a predetermined format. Further, the predetermined format is embedded or suspended.
- the embedding is to embed the approximate quasi-object data in the writing content of the electronic whiteboard, but it is in a clickable state, or use an embedded frame to display it on a fixed area of the electronic whiteboard, and all the approximate quasi-object data
- the data is displayed in the embedded frame;
- the floating type is a follow-up display with the position of the touch track, for example, a floating frame is used to hover at a predetermined distance from the touch track to display the approximate pseudo-object in real time data.
- the click operation signal includes clicking a single selection and/or sliding multiple selections. That is, when determining the approximate quasi-object data to be selected, only one may be selected, or multiple approximate quasi-object data may be selected at the same time.
- the present invention also provides a touch control system for an interactive electronic whiteboard using the touch control method for an interactive electronic whiteboard, including a processing module and a sensing module connected to the processing module , a storage module connected to the processing module, and a display module connected to the processing module;
- the sensing module is used to receive touch operation signals and click operation signals acting on the touch screen of the interactive electronic whiteboard and send the processing module; further, the sensing module includes electronic components such as pressure sensors and touch screens , used to acquire the pressure-sensitivity data, touch width data, and touch coordinate data of the touch operation signal.
- the storage module is used to store the quasi-object database
- the processing module is configured to receive the touch operation signal to form a touch track, and drive the display module to display the touch track; and is also used to screen and obtain multiple objects in the quasi-object database based on the touch track according to a comparison analysis operation. It is also used to determine the selected approximate simulating data according to the click operation signal; the selected approximate simulating data is replaced by the touch track and displayed through the display module.
- the touch control system uses the sensing module to receive the touch operation signal, and then uses the processing module to form a touch trajectory according to the touch operation signal, and displays it synchronously in real time; Compare and analyze, and then screen and obtain multiple approximate quasi-object data and display them, wait for the click operation signal sent by the sensing module to determine the selected approximate quasi-object data and replace the touch track display, which can be displayed according to the simple strokes of the operation Similar pictures can be pushed, which improves the communication of meeting information.
- the present invention also provides a computer-readable medium, in which a computer program is stored, and the program implements the touch control method of the interactive electronic whiteboard after being executed by a processor.
- the computer-readable medium may be included in the device described in the above embodiments; or it may exist independently without being incorporated into the device.
- Computer-readable storage media may include, but are not limited to, electrical connections with one or more wires, portable computer diskettes, hard disks, random access memory (RAM), read-only memory (ROM), erasable Programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage device, magnetic storage device, or any suitable combination of the above.
- a computer-readable storage medium may be any tangible medium that contains or stores a program that can be used by or in conjunction with an instruction execution system, apparatus, or device.
- a computer-readable signal medium may include a data signal transmitted in baseband or as part of a carrier wave, carrying computer-readable program code therein.
- Such propagated data signals may take many forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the foregoing.
- a computer-readable signal medium may also be any computer-readable medium other than a computer-readable storage medium, which can send, propagate, or transmit a program for use by or in conjunction with an instruction execution system, apparatus, or device.
- Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.
- Computer-readable storage media may include, but are not limited to, electrical connections with one or more wires, portable computer diskettes, hard disks, random access memory (RAM), read-only memory (ROM), erasable Programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage device, magnetic storage device, or any suitable combination of the above.
- a computer-readable storage medium may be any tangible medium that contains or stores a program that can be used by or in conjunction with an instruction execution system, apparatus, or device.
- a computer-readable signal medium may include a data signal propagated in baseband or as part of a carrier wave, in which computer-readable program codes are carried.
- Such propagated data signals may take many forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the foregoing.
- a computer-readable signal medium may also be any computer-readable medium other than a computer-readable storage medium, which can send, propagate, or transmit a program for use by or in conjunction with an instruction execution system, apparatus, or device.
- Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.
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Abstract
本发明涉及交互式电子白板的触摸控制方法、系统和可读介质。一种交互式电子白板的触摸控制方法，交互式电子白板中存储有拟物数据库，所述拟物数据库包含有若干拟物数据，所述控制方法包括：接收作用于交互式电子白板的触摸屏的触摸操作信号，形成并显示触摸轨迹；基于所述触摸轨迹根据比对分析操作得到针对每个拟物数据的相似度值；筛选得到多个近似拟物数据；在所述交互式电子白板上陈列所有所述近似拟物数据；接收作用于交互式电子白板上的点选操作信号，进而确定选择的近似拟物数据；将选择的近似拟物数据替换所述触摸轨迹进行显示。能够根据操作的简单笔画即可推送相似图片，提高了会议信息沟通。
Description
本发明涉及触控交互领域，尤其涉及交互式电子白板的触摸控制方法、系统和可读介质。
电子白板已经广泛应用于视频会议、教学设备中。现有技术中，电子白板会保留书写痕迹，用以完成现场实际信息交互，但是在实际使用中，对于电子白板在会议或教学中，往往需要使用简单笔画即可快速传达操作者的真实意图，此时就会需要操作者不仅具有写字的能力，还要有绘画的能力，才能清晰展示想要表达的内容。但是现有电子白板控制中，只能保证显示操作者在电子白板的操作痕迹，无法将操作者的操作痕迹标准化，造成排版不佳，影响会议或教学的效果。
因而现有的白板控制技术还在存在不足，还有待改进和提高。
发明内容
鉴于上述现有技术的不足之处，本发明的目的在于提供交互式电子白板的触摸控制方法、系统和可读介质，用以解决目前交互式电子白板中无法将操作者的操作痕迹标准化显示，造成排版不佳影响会议或教学效果的问题。
为了达到上述目的，本发明采取了以下技术方案：
一种交互式电子白板的触摸控制方法，交互式电子白板中存储有拟物数据库，所述拟物数据库包含有若干拟物数据，所述控制方法包括：
接收作用于交互式电子白板的触摸屏的触摸操作信号，形成并显示触摸轨迹；
基于所述触摸轨迹根据比对分析操作得到针对每个拟物数据的相似度值；其中，所述比对分析操作使用欧氏距离函数或余弦距离函数进行相似度计算；
筛选得到多个近似拟物数据；其中，所述相似度值大于预定值的拟物数据作为近似拟物数据；
在所述交互式电子白板上陈列所有所述近似拟物数据；
接收作用于交互式电子白板上的点选操作信号，进而确定选择的近似拟物数据；将选择的近似拟物数据替换所述触摸轨迹进行显示。
进一步的，所述的交互式电子白板的触摸控制方法，所述比对分析操作包括：
基于所述触摸轨迹生成触摸矢量图，并同步获取所述触摸矢量图的触摸特征向量；
获取拟物数据的轮廓特征向量；
将所述触摸特征向量与轮廓特征向量使用欧氏距离函数或余弦距离函数进行比对分析，得到针对所述拟物数据的相似度值。
进一步的，所述的交互式电子白板的触摸控制方法，所述拟物数据的类型包括实物图像、实物文字名称、卡通图像、标准图像、标准矢量图像中的一种或多种；
所述在所述交互式电子白板上陈列所述近似拟物数据具体包括：
将所有筛选得到近似拟物数据按照相似度值由大到小进行排序；
将排序后的近似拟物数据按照预定格式陈列显示。
进一步的，所述的交互式电子白板的触摸控制方法，所述预定格式为嵌入式或悬浮式。
进一步的，所述的交互式电子白板的触摸控制方法，当同一拟物具有多种类型的拟物数据时，仅使用其中的标准矢量图像参与所述比对分析操作。
进一步的，所述的交互式电子白板的触摸控制方法，所述点选操作信号包括点击单个选中和/或滑动多个选中。
一种使用所述的交互式电子白板的触摸控制方法的交互式电子白板的触摸控制系统，包括处理模块、与所述处理模块连接的传感模块、与所述处理模块连接的存储模块、与所述处理模块连接的显示模块；
所述传感模块，用于接收作用于交互式电子白板的触摸屏的触摸操作信号、点选操作信号并发送所述处理模块；
所述存储模块，用于存储拟物数据库；
所述处理模块，用于接收所述触摸操作信号形成触摸轨迹，并驱动所述显示模块显示触摸轨迹；还用于基于所述触摸轨迹根据比对分析操作在所述拟物数据库中筛选得到多个近似拟物数据；还用于根据点选操作信号确定选择的近似拟物数据；将选择的近似拟物数据替换所述触摸轨迹通过所述显示模块在触摸屏上进行展示。
一种计算机可读介质，其内存储有计算机程序，所述程序在被处理器执行后实现所述的交互式电子白板的触摸控制方法。
相较于现有技术，本发明提供的交互式电子白板的触摸控制方法、系统和可读介质，具有以下有益效果：
本发明提供的触摸控制方法基于接收作用在触摸屏上的触摸操作信号，进而形成触摸轨迹并同步实时显示；与此同时将所述触摸轨迹在拟物数据库中进行比对分析，进而筛选得到 多个近似拟物数据并陈列显示，等待点选操作信号确定选择的近似拟物数据并替换所述触摸轨迹显示，能够根据操作的简单笔画即可推送相似图片，无需频繁的上传或搜索需要的关键信息，提高了会议信息沟通；
本发明提供的触摸控制系统使用传感模块接收触摸操作信号，进而使用处理模块根据触摸操作信号形成触摸轨迹，并同步实时显示；与此同时将所述触摸轨迹在拟物数据库中进行比对分析，进而筛选得到多个近似拟物数据并陈列显示，等待所述传感模块发送的点选操作信号确定选择的近似拟物数据并替换所述触摸轨迹显示，能够根据操作的简单笔画即可推送相似图片，无需频繁的上传或搜索需要的关键信息，提高了会议信息沟通。
图1是本发明提供的触摸控制方法的流程图；
图2是本发明提供的触摸控制系统的结构框图。
为使本发明的目的、技术方案及效果更加清楚、明确，以下参照附图并举实施例对本发明进一步详细说明。应当理解，此处所描述的具体实施例仅用以解释本发明，并不用于限定本发明。
本领域技术人员应当理解，前面的一般描述和下面的详细描述是本发明的示例性和说明性的具体实施例，不意图限制本发明。
本文中术语“包括”，“包含”或其任何其他变体旨在覆盖非排他性包括，使得包括步骤列表的过程或方法不仅包括那些步骤，而且可以包括未明确列出或此类过程或方法固有的其他步骤。同样，在没有更多限制的情况下，以“包含...一个”开头的一个或多个设备或子系统，元素或结构或组件也不会没有更多限制，排除存在其他设备或其他子系统或其他元素或其他结构或其他组件或其他设备或其他子系统或其他元素或其他结构或其他组件。在整个说明书中，短语“在一个实施例中”，“在另一个实施例中”的出现和类似的语言可以但不一定都指相同的实施例。
除非另有定义，否则本文中使用的所有技术和科学术语具有与本发明所属领域的普通技术人员通常所理解的相同含义。
请参阅图1和图2，本发明提供一种交互式电子白板的触摸控制方法，交互式电子白板中存储有拟物数据库，所述拟物数据库包含有若干拟物数据，进一步的，所述拟物数据库可以提前存储在交互式电子白饭的存储部件中，此种存储方式，可以满足一个所述交互式电子白板的数据调用；也可以将拟物数据库存储在服务器的存储部件中，通过交互式电子白板与 服务器连接，调用所述拟物数据库，此种存储方式，可以满足所有与该服务器连接的交互式电子白板的数据调用；还可以通过网络云存储通过交互式电子白板调用的方式实现，此种存储方式，可以满足所有与该网络云存储连接的交互式电子白板的数据调用；进一步的，所述拟物数据的数据来源为动物、植物、建筑、人类活动所需的硬件、想要表达的抽象概念等生产、生活领域的中的常见事物，当然还可以根据不同的领域需求进行定制，例如根据针对某一生产车间的开会需求，定制生产车间的部分机器以及机器的零部件的拟物数据，所述控制方法包括：
接收作用于交互式电子白板的触摸屏的触摸操作信号，形成并显示触摸轨迹；进一步的，所述触摸操作信号包括压感数据、触摸宽度数据、触摸坐标数据；所述触摸轨迹按照所述触摸宽度数据呈现的宽度、所述触摸坐标数据呈现的位置点进行显示，当然所述触摸操作信号为连续获取，所述连续获取为间隔预定时间获取一次目标坐标数据，所述预定时间优选为1ms；所述触摸宽度数据为触摸屏上被同时触摸到的点坐标中，任意两个点坐标之间的距离数据中的最大值；所述触摸坐标数据为触摸点坐标在预设范围值内时的坐标值。进一步的，所述交互式电子白板至少具有一传感模块，用于接收作用于交互式电子白板的触摸屏的触摸操作信号；进一步的，所述交互式电子白板具有触摸屏和压力传感器，通过压力传感器检测压感数据，通过触摸屏检测触摸宽度数据和触摸坐标数据；进一步的，所述压力传感器和所述触摸屏均为交互式电子白板技术领域中常用压力传感装置、触摸屏装置。进一步的，在本步骤中，交互式电子白板还可以检测触摸屏是否存在触摸操作信号，当存在触摸操作信号的情况下，开始生成所述触摸轨迹；进一步的，当所述压感数据小于压感设定值时不显示触摸轨迹，当触摸宽度大于宽度设定值的情况下，按照宽度设定值显示触摸轨迹的宽度。
基于所述触摸轨迹根据比对分析操作得到针对每个拟物数据的相似度值；其中，所述比对分析操作使用欧氏距离函数或余弦距离函数进行相似度计算；进一步的，在本实施例中，所述比对分析操作采用本领域常用的图像比对算法即可，例如可以是先将所述触摸轨迹形成矢量图(基于所述触摸轨迹一般为矢量形态，因此转换方式不做限定)，然后将得到的矢量图与拟物数据之间根据预设的图像比对算法进行处理分析得到。当然，在每次筛选时，需要针对整个拟物数据库中的每个拟物数据进行比对分析，进而根据相似度值进行筛选得到相似度值在一定范围内的拟物数据；进一步的，还可以首先对所述拟物数据库先进行拓扑分类，可以是一级分类、二级分类、……直到一定的精确类别，例如可以分一级分类为动物类、植物类、建筑类，动物类内部还包括二级分类为鱼类、爬行类、昆虫类等，然后在进行三级分类，找到共性进行划细分；比对时，先进行一级分类的共性比对，然后再进行二级分类的共性比对，最终只需要比对部分拟物数据即可实现准确寻找。进一步的，所述比对分析操作实时进 行，即只要交互式电子白板上存在触摸轨迹即进行比对分析操作。
进一步的，所述欧氏距离函数对所述触摸轨迹与拟物数据之间的特征向量进行处理时，可以表示为以下公式：
其中，d(x,y)为相似度值；x
i为触摸轨迹的特征向量中的第i个元素；y
i为参与比对的拟物数据之间的特征向量中的第i个元素；N为特征向量的总个数。
在另一个实施例中，使用所述余弦距离函数对所述触摸轨迹与拟物数据之间的特征向量进行处理时，可以表示为以下公式：
其中，d(x,y)为相似度值；x
i为触摸轨迹的特征向量中的第i个元素；y
i为参与比对的拟物数据之间的特征向量中的第i个元素；N为特征向量的总个数。
筛选得到多个近似拟物数据；其中，所述相似度值大于预定值的拟物数据作为近似拟物数据；具体的，所述预定值的设定根据使用的距离函数确定，例如当使用欧氏距离函数计算相似度值时，可以使用的所有的相似度值中最大相似度值的第一预定比例作为所述预定值，能够保证一定会有一定的数量近似拟物数据被筛选得到。当所述余弦距离函数对所述触摸轨迹与拟物数据之间的特征向量进行处理时，所述预定值优选为0.7-0.9，进一步优选为0.8，这样可以保证筛选的到近似拟物数据的可靠性。
在所述交互式电子白板上陈列所有所述近似拟物数据；此处，所述陈列为在交互式电子白板的触摸屏上进行显示，进一步的，陈列的所述近似拟物数据随着触摸轨迹的变化而变化，进一步的，还可以根据所述比对分析操作的数据进行变化。进一步的，所述近似拟物数据的陈列位置可以是在电子白板上划定固定的区域，也可以是随着触摸轨迹的位置确定，优选操作为距离所述触摸轨迹的某一方向的边际预定距离显示即可。
接收作用于交互式电子白板上的点选操作信号，进而确定选择的近似拟物数据；进一步的，所述点选操作信号的获取步骤与所述触摸操作信号相同，此处不做赘述，其本质也是一种压感信号、触摸坐标信号的集合。进一步的，所述点选操作信号应当为在所述近似拟物数据陈列区域进行传感检测。
将选择的近似拟物数据替换所述触摸轨迹进行显示。
基于前述实施例，作为优选方案，本实施例中，所述比对分析操作包括：
基于所述触摸轨迹生成触摸矢量图，并同步获取所述触摸矢量图的触摸特征向量；进一步的，所述触摸特征向量的获取为图像特征向量技术中针对矢量图的特征向量获取的常用技术，例如基于SIFT的特征向量生成技术，本发明不做具体限定。
获取拟物数据的轮廓特征向量；进一步的，所述轮廓特征向量为图像特征向量技术与所述触摸特征向量的获取方法相同，区别在与针对拟物数据的特征向量获取针对图形的轮廓进行，若是文字则使用近似矢量图的方式进行。
将所述触摸特征向量与轮廓特征向量使用欧氏距离函数或余弦距离函数进行比对分析，得到针对所述拟物数据的相似度值。进一步的，所述相似度比对算法还可以使用像素点对比、重心对比、投影对比、分块对比等方法。具体的，无论使用何种相似对比对算法，均使用其公知的技术方案，本发明不做限定。
作为优选方案，本实施例中，所述拟物数据的类型包括实物图像、实物文字名称、卡通图像、标准图像、标准矢量图像中的一种或多种；进一步的，所述实物图像为某一现实存在的实体的图像；所述实物文字名称为某一现实存在的实体的通用称为，例如在电子白板上画一个箭头→，则会识别文字“箭头”；所述卡通图像为实体或虚拟事物的卡通形象；所述标准图像即建立某种事物在普通认知中的公知形象，例如太阳的实物图像或卡通标准形象可以统一，当然也可以使用多种标准形象。进一步的，当拟物数据的类型为一种时，此时在电子白板上仅展示一种类型，但是所述拟物数据库中必然会同步存储每个物体的标准矢量图像，保证比对分析操作的快速处理。进一步的，当一种事物使用了多种类型进行同步存储时，每种类型的存储数据相互关联，同时当需要进行比对分析操作时，仅使用标准矢量图像参与比对分析操作，进而同时陈列显示。
所述在所述交互式电子白板上陈列所述近似拟物数据具体包括：
将所有筛选得到近似拟物数据按照相似度值由大到小顺序进行排序；进一步的，所述相似度值由所述比对分析操作获得，当所述触摸轨迹与一个拟物数据进行比对后得到跟此拟物数据的相似度值。
将排序后的近似拟物数据按照预定格式陈列显示。进一步的，所述预定格式为嵌入式或悬浮式。所述嵌入式为将近似拟物数据内嵌在电子白板的书写内容中，但是处于可点选状态，或者使用一内嵌框显示在电子白板上的某一固定区域，将所有的近似拟物数据陈列在所述内嵌框中；所述悬浮式为随着触摸轨迹的位置进行跟随式显示，例如使用一悬浮框悬浮在所述 触摸轨迹的预定距离处，进行实时展示所述近似拟物数据。
作为优选方案，本实施例中，所述点选操作信号包括点击单个选中和/或滑动多个选中。即确定选择的近似拟物数据时，可以仅选择一个，也可以同时选择多个所述近似拟物数据。
相应的，请参阅图2，本发明还提供一种使用所述的交互式电子白板的触摸控制方法的交互式电子白板的触摸控制系统，包括处理模块、与所述处理模块连接的传感模块、与所述处理模块连接的存储模块、与所述处理模块连接的显示模块；
所述传感模块，用于接收作用于交互式电子白板的触摸屏的触摸操作信号、点选操作信号并发送所述处理模块；进一步的，所述传感模块包括压力传感器、触摸屏等电子元器件，用于获取触摸操作信号的压感数据以及触摸宽度数据和触摸坐标数据。
所述存储模块，用于存储拟物数据库；
所述处理模块，用于接收所述触摸操作信号形成触摸轨迹，并驱动所述显示模块显示触摸轨迹；还用于基于所述触摸轨迹根据比对分析操作在所述拟物数据库中筛选得到多个近似拟物数据；还用于根据点选操作信号确定选择的近似拟物数据；将选择的近似拟物数据替换所述触摸轨迹通过所述显示模块进行展示。
具体的，本发明提供的触摸控制系统使用传感模块接收触摸操作信号，进而使用处理模块根据触摸操作信号形成触摸轨迹，并同步实时显示；与此同时将所述触摸轨迹在拟物数据库中进行比对分析，进而筛选得到多个近似拟物数据并陈列显示，等待所述传感模块发送的点选操作信号确定选择的近似拟物数据并替换所述触摸轨迹显示，能够根据操作的简单笔画即可推送相似图片，提高了会议信息沟通。
本发明还提供一种计算机可读介质，其内存储有计算机程序，所述程序在被处理器执行后实现所述的交互式电子白板的触摸控制方法。该计算机可读介质可以是上述实施例中描述的装置中所包含的；也可以是单独存在，而未装配入该装置中。
计算机可读存储介质的更具体的例子可以包括但不限于：具有一个或多个导线的电连接、便携式计算机磁盘、硬盘、随机访问存储器(RAM)、只读存储器(ROM)、可擦式可编程只读存储器(EPROM或闪存)、光纤、便携式紧凑磁盘只读存储器(CD-ROM)、光存储器件、磁存储器件、或者上述的任意合适的组合。在本申请中，计算机可读存储介质可以是任何包含或存储程序的有形介质，该程序可以被指令执行系统、装置或者器件使用或者与其结合使用。而在本申请中，计算机可读的信号介质可以包括在基带中或者作为载波一部分传播的数据信 号，其中承载了计算机可读的程序代码。这种传播的数据信号可以采用多种形式，包括但不限于电磁信号、光信号或上述的任意合适的组合。计算机可读的信号介质还可以是计算机可读存储介质以外的任何计算机可读介质，该计算机可读介质可以发送、传播或者传输用于由指令执行系统、装置或者器件使用或者与其结合使用的程序。计算机可读介质上包含的程序代码可以用任何适当的介质传输，包括但不限于：无线、电线、光缆、RF等等，或者上述的任意合适的组合。计算机可读存储介质的更具体的例子可以包括但不限于：具有一个或多个导线的电连接、便携式计算机磁盘、硬盘、随机访问存储器(RAM)、只读存储器(ROM)、可擦式可编程只读存储器(EPROM或闪存)、光纤、便携式紧凑磁盘只读存储器(CD-ROM)、光存储器件、磁存储器件、或者上述的任意合适的组合。在本申请中，计算机可读存储介质可以是任何包含或存储程序的有形介质，该程序可以被指令执行系统、装置或者器件使用或者与其结合使用。而在本申请中，计算机可读的信号介质可以包括在基带中或者作为载波一部分传播的数据信号，其中承载了计算机可读的程序代码。这种传播的数据信号可以采用多种形式，包括但不限于电磁信号、光信号或上述的任意合适的组合。计算机可读的信号介质还可以是计算机可读存储介质以外的任何计算机可读介质，该计算机可读介质可以发送、传播或者传输用于由指令执行系统、装置或者器件使用或者与其结合使用的程序。计算机可读介质上包含的程序代码可以用任何适当的介质传输，包括但不限于：无线、电线、光缆、RF等等，或者上述的任意合适的组合。
可以理解的是，对本领域普通技术人员来说，可以根据本发明的技术方案及其发明构思加以等同替换或改变，而所有这些改变或替换都应属于本发明所附的权利要求的保护范围。
Claims (8)
- 一种交互式电子白板的触摸控制方法，其特征在于，交互式电子白板中存储有拟物数据库，所述拟物数据库包含有若干拟物数据，所述控制方法包括：接收作用于交互式电子白板的触摸屏的触摸操作信号，形成并显示触摸轨迹；基于所述触摸轨迹根据比对分析操作得到针对每个拟物数据的相似度值；其中，所述比对分析操作使用欧氏距离函数或余弦距离函数进行相似度计算；筛选得到多个近似拟物数据；其中，所述相似度值大于预定值的拟物数据作为近似拟物数据；在所述交互式电子白板上陈列所有所述近似拟物数据；接收作用于交互式电子白板上的点选操作信号，进而确定选择的近似拟物数据；将选择的近似拟物数据替换所述触摸轨迹进行显示。
- 根据权利要求1所述的交互式电子白板的触摸控制方法，其特征在于，所述比对分析操作包括：基于所述触摸轨迹生成触摸矢量图，并同步获取所述触摸矢量图的触摸特征向量；获取拟物数据的轮廓特征向量；将所述触摸特征向量与轮廓特征向量使用欧氏距离函数或余弦距离函数进行比对分析，得到针对所述拟物数据的相似度值。
- 根据权利要求2所述的交互式电子白板的触摸控制方法，其特征在于，所述拟物数据的类型包括实物图像、实物文字名称、卡通图像、标准图像、标准矢量图像中的一种或多种；所述在所述交互式电子白板上陈列所述近似拟物数据具体包括：将所有筛选得到近似拟物数据按照相似度值由大到小进行排序；将排序后的近似拟物数据按照预定格式陈列显示。
- 根据权利要求3所述的交互式电子白板的触摸控制方法，其特征在于，所述预定格式为嵌入式或悬浮式。
- 根据权利要求3所述的交互式电子白板的触摸控制方法，其特征在于，当同一拟物具有多种类型的拟物数据时，仅使用其中的标准矢量图像参与所述比对分析操作。
- 根据权利要求1所述的交互式电子白板的触摸控制方法，其特征在于，所述点选操作信号包括点击单个选中和/或滑动多个选中。
- 一种使用权利要求1-6任一所述的交互式电子白板的触摸控制方法的交互式电子白板的触摸控制系统，其特征在于，包括处理模块、与所述处理模块连接的传感模块、与所述处 理模块连接的存储模块、与所述处理模块连接的显示模块；所述传感模块，用于接收作用于交互式电子白板的触摸屏的触摸操作信号、点选操作信号并发送所述处理模块；所述存储模块，用于存储拟物数据库；所述处理模块，用于接收所述触摸操作信号形成触摸轨迹，并驱动所述显示模块显示触摸轨迹；还用于基于所述触摸轨迹根据比对分析操作在所述拟物数据库中筛选得到多个近似拟物数据；还用于根据点选操作信号确定选择的近似拟物数据；将选择的近似拟物数据替换所述触摸轨迹通过所述显示模块在触摸屏上进行展示。
- 一种计算机可读介质，其特征在于，其内存储有计算机程序，所述程序在被处理器执行后实现权利要求1-6任一所述的交互式电子白板的触摸控制方法。
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