CN110737417A - demonstration equipment and display control method and device of marking line thereof - Google Patents
demonstration equipment and display control method and device of marking line thereof Download PDFInfo
- Publication number
- CN110737417A CN110737417A CN201910942614.4A CN201910942614A CN110737417A CN 110737417 A CN110737417 A CN 110737417A CN 201910942614 A CN201910942614 A CN 201910942614A CN 110737417 A CN110737417 A CN 110737417A
- Authority
- CN
- China
- Prior art keywords
- annotation
- line
- image
- content
- annotation content
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 44
- 230000008859 change Effects 0.000 claims abstract description 37
- 238000004590 computer program Methods 0.000 claims description 16
- 238000001514 detection method Methods 0.000 claims description 4
- 230000008569 process Effects 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 4
- 230000006870 function Effects 0.000 description 15
- 238000012545 processing Methods 0.000 description 12
- 238000010586 diagram Methods 0.000 description 6
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000001960 triggered effect Effects 0.000 description 3
- 230000003321 amplification Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 238000004422 calculation algorithm Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- 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
- G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- User Interface Of Digital Computer (AREA)
Abstract
A method for controlling the display of the annotation line of presentation equipment includes collecting the th image, wherein the th image is the whole or partial image of the presentation material currently displayed, detecting the change of the th image relative to the second image, determining the validity state of the annotation line and/or the new position of the annotation line, wherein the second image is the whole or partial image of the presentation material displayed when the annotation line is drawn, blanking or displaying the annotation line according to the validity state of the annotation line, and/or changing the position of the annotation line according to the new position of the annotation line, so that the display or blanking of the annotation line can be intelligently and automatically controlled, the operation of a presenter is not needed to hide the annotation line, display the annotation line or move the annotation line in the whole operation process, the operation frequency of the presenter is reduced, the fluency of the presentation is guaranteed, the misoperation is avoided, and the annotation line function can be fully utilized to improve the presentation effect.
Description
Technical Field
The application belongs to the field of demonstration equipment, and particularly relates to kinds of demonstration equipment and a display control method and device of a marking line of the demonstration equipment.
Background
The demonstration device is used for displaying demonstration data, the demonstration device usually has multiple functions of highlighting demonstration key contents to improve explanation effect, an input device for operating the demonstration device can be a mouse, a stylus pen, a wireless demonstration device and the like, the demonstration device supports common functions of 1, displaying indication light points on a screen, wherein the common shapes of the indication light points are highlight circular icons or arrow icons and are used for indicating the key contents, 2, displaying annotation icons on the display screen, wherein the common shapes of the annotation icons are paintbrushes, and when the annotation icons move on the display screen, drawing the annotation lines on the key contents of demonstration data pictures, and 3, amplifying details, namely displaying amplification areas on the screen, and amplifying and displaying parts of the demonstration data in the amplification areas to highlight the detailed contents.
The method comprises the steps that effective functions for highlighting and demonstrating key contents are marked, a demonstration device can generally adopt two modes to achieve the marked line function, wherein implementation modes are the marked line function provided by calling demonstration software (such as PPT), under the mode, the marked line can be drawn only on demonstration data played by specific demonstration software, the marked line cannot be drawn on data played by other software (such as Photoshop, Word, webpage and the like), the application range of the demonstration device is limited, in addition, implementation modes, image overlaying layers are created, the marked line is drawn on the image overlaying layers, then the image overlaying layers and demonstration data pictures are overlaid and then displayed on a screen, and the mode can be used for drawing the marked line on the demonstration data played by any software.
However, the last callline implementation has problems that the drawn callline is independent of demonstration software, when the demonstration data is changed (such as turning to the lower PPT page), mechanisms are needed to blank or delete the currently displayed callline, otherwise, the callline can be displayed on a new page of the demonstration data by mistake, which affects the demonstration effect.
Disclosure of Invention
In view of this, the embodiment of the present application provides types of presentation devices and a method and an apparatus for controlling display of a annotation line thereof, so as to solve the problem in the prior art that universality of an annotation line function and blanking control of an annotation line are troublesome.
, the embodiment of the application provides a display control method of a mark line of a demonstration device, which comprises the following steps:
collecting th image, wherein the th image is all or part of the currently displayed demonstration material;
detecting a change of the th image relative to a second image, wherein the second image is a whole picture or a partial picture of the demonstration material displayed when the mark line is drawn, and determining the validity state of the mark line and/or the new position of the mark line;
blanking or displaying the marking line according to the validity state of the marking line, and/or changing the position of the marking line according to the new position of the marking line.
With reference to , in a possible implementation of the method, detecting a change in the th image relative to a second image, the step of determining the validity state of the mark line includes:
acquiring annotation content corresponding to the annotation line in the th image and acquiring second annotation content corresponding to the annotation line in the second image;
detecting whether the variation of the th annotation content relative to the second annotation content is greater than a preset th variation threshold;
and if the variation is detected to be larger than a preset th variation threshold, determining that the marking line is invalid.
With reference to the aspect, in a second possible implementation manner of the aspect, the detecting a change in the image relative to a second image, and the determining the validity state of the mark line includes:
acquiring annotation content corresponding to the annotation line in the th image and acquiring second annotation content corresponding to the annotation line in the second image;
dividing the th annotation content and the second annotation content into two or more sub-blocks according to a predetermined rule;
and if the variation of the sub-block of the th labeled content and the corresponding sub-block of the second labeled content is detected to be larger than a preset second variation threshold, determining that the part of the labeled line corresponding to the sub-block is invalid.
With reference to the st aspect, in a third possible implementation manner of the st aspect, the change of the th image relative to the second image is detected, and the step of determining the new position of the mark line includes:
acquiring annotation content corresponding to the annotation line in the th image and acquiring second annotation content corresponding to the annotation line in the second image;
when the nd annotation content has a variation with respect to the second annotation content greater than a preset third variation threshold, searching the nd image for the second annotation content;
if the second annotation content is searched in the th image, determining a new position of the annotation line according to the position of the searched second annotation content.
With reference to the aspect, in a fourth possible implementation manner of the aspect, the detecting a change in the image relative to the second image, and the determining the validity state of the mark line includes:
searching image for a second annotation content if the annotation line is in blanking state, the second annotation content being the content of the annotation area corresponding to the annotation line in the second image;
if the second annotation content is searched for in the th image, it is determined that the annotation line is valid, or that the annotation line portion is valid.
With reference to the fourth possible implementation manner of the aspect, in a fifth possible implementation manner of the aspect, the detecting a change of the image relative to the second image, and the determining a new position of the annotation line includes:
determining a new position of the annotation line according to the position of the second annotation content searched in the th image.
In a second aspect, an embodiment of the present application provides display control apparatuses for a mark line of a presentation device, including:
an image acquisition unit for acquiring image, wherein the image is the whole picture or partial picture of the currently displayed demonstration material;
a mark line state determination unit, configured to detect a change of the th image relative to a second image, the second image being a whole or partial picture of presentation material displayed when the mark line is drawn, and determine a validity state of the mark line and/or a new position of the mark line;
and the marking line control unit is used for blanking or displaying the marking line according to the validity state of the marking line and/or changing the position of the marking line according to the new position of the marking line.
With reference to the second aspect, in an th possible implementation manner of the second aspect, the annotation line state determination unit includes:
an annotation content acquiring subunit, configured to acquire a annotation content corresponding to the annotation line in the image, and acquire a second annotation content corresponding to the annotation line in the second image;
a marking content change detection subunit, configured to detect whether a change amount of the th marking content with respect to the second marking content is larger than a preset th change threshold;
and the marking invalidity determining subunit is configured to determine that the marking line is invalid when the variation is detected to be greater than a preset -th variation threshold.
With reference to the second aspect, in a second possible implementation manner of the second aspect, the label line state determining unit includes:
a second annotation content acquiring subunit, configured to acquire a -th annotation content corresponding to the annotation line in the -th image, and acquire a second annotation content corresponding to the annotation line in the second image;
a block division subunit, configured to divide the th labeled content and the second labeled content into two or more sub-blocks according to a predetermined rule;
and a partial annotation line invalidation determining subunit, configured to determine that the partial annotation line corresponding to the sub-block of the -th annotation content is invalid if it is detected that a variation between the sub-block and the corresponding sub-block of the second annotation content is greater than a preset second variation threshold.
With reference to the second aspect, in a third possible implementation manner of the second aspect, the label line state determining unit includes:
a third annotation content acquiring subunit, configured to acquire a annotation content corresponding to the annotation line in the th image, and acquire a second annotation content corresponding to the annotation line in the second image;
an th searching subunit, configured to search the th image for the second annotation content when the th annotation content has a variation amount with respect to the second annotation content that is greater than a preset third variation threshold;
an position determining subunit, configured to determine a new position of the annotation line according to the position of the searched second annotation content if the second annotation content is searched in the th image.
With reference to the second aspect, in a fourth possible implementation manner of the second aspect, the annotation line determination unit includes:
a second searching subunit, configured to search, if the annotation line is in a blanking state, for second annotation content in the -th image, where the second annotation content is content of an annotation area corresponding to the annotation line in the second image;
an annotation validity determining subunit, configured to determine that the annotation line is valid or that the annotation line is partially valid if the second annotation content is searched for in the th image.
With reference to the fourth possible implementation manner of the second aspect, in a fifth possible implementation manner of the second aspect, the label line state determining unit further includes:
a second position determination subunit, configured to determine a new position of the annotation line according to the position of the second annotation content searched in the th image.
In a third aspect, an embodiment of the present application provides kinds of presentation devices, including a memory, a processor, and a computer program stored in the memory and executable on the processor, the processor implementing the steps of the method for controlling display of a mark line of a presentation device as claimed in any item of the when executing the computer program.
In a fourth aspect, embodiments of the present application provide computer readable storage media storing a computer program that when executed by a processor implements the steps of a method for controlling display of a mark-up line of a presentation device as described in any of aspect .
Compared with the prior art, the embodiment of the application has the advantages that:
the method comprises the steps of collecting th images corresponding to all or part of pictures of currently displayed demonstration data, comparing the th images with second images corresponding to all or part of pictures of the demonstration data when a marking line is drawn, and determining the effectiveness of the marking line and/or the new position of the marking line according to the th images and the change of the second images.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings according to these drawings without any creative effort.
FIG. 1a is a schematic view of a presentation frame without an image overlay according to an embodiment of the present disclosure;
FIG. 1b is a schematic diagram illustrating a function of a callout line based on an image overlay of a presentation device according to an embodiment of the present disclosure;
fig. 2 is a schematic flow chart illustrating an implementation of a display control method for a callout line of demonstration devices according to an embodiment of the present application;
FIG. 3 is a flow chart illustrating an implementation of determining that a callline is invalid according to an embodiment of the present disclosure;
FIG. 4 is a schematic flow chart of implementations of determining that a marked line is partially invalid according to an embodiment of the present application;
FIG. 5 is a flow chart illustrating an implementation of determining a new position of a callout line according to an embodiment of the present disclosure;
FIG. 6 is a schematic flow chart of an implementation of determining that a callout is valid according to types provided in an embodiment of the present application;
fig. 7 is a schematic structural diagram of a display control device of a callout line of demonstration apparatuses according to an embodiment of the present application;
fig. 8 is a schematic diagram of a presentation device provided in an embodiment of the present application.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.
In order to explain the technical solution described in the present application, the following description will be given by way of specific examples.
The demonstration host is provided with demonstration software, wherein the demonstration software can be PPT, Word, Slide and any other software, can also be a graphic desktop of a graphic operating system (such as Windows, MacOS, Android, IOS, Linux and the like), and can also be a combination of the above software.
The demonstration device further has a function of highlighting key contents of demonstration data, wherein functions are marked lines, in the demonstration process, a speaker can trigger marked icons to be displayed on a screen through an input device, the marked icons are usually in the shape of a brush, the speaker can control the marked icons to move on the screen through the input device, and the marked lines can be drawn on a demonstration data picture to highlight the key contents.
The demonstration device in the application realizes the function of a marking line by creating an image superposition layer on a demonstration material picture, fig. 1a is a schematic diagram of the demonstration material picture, the demonstration material picture 111 is positioned on a layer 110, the demonstration material picture 111 comprises important content 112 and other demonstration content 113 in the demonstration content, the marking line in the superposition layer is added on the basis of fig. 1a to obtain the marking effect shown in fig. 1b, the basic realization process is that an image superposition layer 120 is created, a marking line 121 is drawn on the image superposition layer 120, the image superposition layer 120 and the layer 110 containing the demonstration material picture 111 are combined and then displayed on a screen, namely the marking line 121 in the image superposition layer 120 is superposed on the corresponding position of the demonstration material picture 111, so that the purpose of marking the important content 112 which is highlighted by a speaker is realized, the image superposition layer can be realized by installing a program in a host, a special image processing device can be arranged, the image processing device can be realized by the image processing device, the image processing device can be an independent device, can be integrated with the demonstration device or a display device, and can be used as a multi-layer limiting scheme for the demonstration material picture.
The display control method of the annotation line is used for managing the annotation line drawn by the speaker. The display control method of the mark line can be realized by installing a program in a demonstration host, can also be realized by the image processing equipment, and can also be finished by the cooperation of the image processing equipment and the demonstration host. The display control method may also be implemented by storing a program for implementing the display control method in a portable storage device, and triggering the smart device to execute the program when the portable storage device is connected to the smart device.
Fig. 2 is a schematic flow chart illustrating an implementation of a display control method for a callout line of demonstration devices according to an embodiment of the present application, which is detailed as follows:
in step S201, an th image is captured, wherein the th image is a whole or partial image of the currently displayed presentation;
the th image corresponds to a demonstration data picture played by the demonstration host at the acquisition time and displayed on the screen, the demonstration data picture can be the image displayed on the screen, or the image displayed on the screen is separated into a foreground and a background, and the foreground part is extracted to be used as the demonstration data picture, the th image can be the whole of the currently displayed demonstration data picture, or can be a partial area of the demonstration data picture determined according to a preset rule, such as a preset position and a preset number of blocks in the whole demonstration data picture, preferably, the th image at least comprises the demonstration data pictures in the marked area corresponding to all marked lines currently in the display state.
In the present application, the th image may be captured in real time according to the screen refresh rate, the th image may be captured at regular time, or the th image may be triggered according to a predetermined condition, for example, the th image is triggered when the speaker presses a function key of the input device.
After the th image is acquired, the second image is compared with the second image to analyze, and whether the image of the demonstration data changes or not is detected, the second image is a whole or partial image of the demonstration data displayed when the annotation line is drawn, and contains important contents which the speaker actually wants to label, the second image is usually acquired and stored immediately when the annotation line is drawn, or in an alternative embodiment, the second image can be acquired and stored when the demonstration data corresponding to the annotation line changes (such as PPT page turning), and areas of the image of the demonstration data corresponding to the th image and the second image can be the same or different.
The th image and the second image can be collected by installing a program in the demonstration host, or by an image processing device independent of the demonstration host, or by a combination of the demonstration host and the image processing device.
In step S202, detecting a change of the th image relative to a second image, the second image being a whole or partial frame of the presentation material displayed when the mark line is drawn, and determining the validity state of the mark line and/or the new position of the mark line;
the th image and the second image are compared and analyzed, whether the demonstration content to be actually marked of the marked line in the display state is still displayed on the current screen or whether the demonstration content to be actually marked of the marked line in the blanking state is redisplayed according to the change of the th image relative to the second image, for example, the demonstration content to be marked of the marked line in the display state is not displayed on the current screen any more when the demonstration data is turned to the lower page, the demonstration content to be marked of the marked line in the blanking state is triggered to be redisplayed on the current screen when the demonstration data is turned to the upper page, and whether the demonstration content to be actually marked of the marked line is moved to a new position according to the change of the th image relative to the second image.
In summary, the effectiveness of the annotation line, such as invalid annotation line, invalid annotation line part, valid annotation line part, and valid annotation line, and/or the new position of the annotation line, which is the new annotation position determined when the annotation content is moved, can be determined by comparing the th image with the second image.
It should be noted that the validity status of the mark line and/or the position of the mark line may be determined by analyzing the change of the th th image relative to the second image, or may be determined by analyzing the change of the th image relative to the second image for two or more frames.
The image change relative to the second image can be analyzed by installing a program in the presentation host, by an image processing device independent of the presentation host, or by a combination of the presentation host and the image processing device.
In step S203, the annotation line is blanked or displayed according to the validity status of the annotation line, and/or the position of the annotation line is changed according to the new position of the annotation line.
Whether the marking line is blanked or displayed can be correspondingly determined according to the validity state of the marking line. The validity status of the marking line can comprise invalid marking line, valid marking line part and valid marking line.
When the marking line is determined to be invalid, meaning that the demonstration content to be marked by the marking line is not displayed on the current screen any more, executing blanking control on the marking line, namely, not displaying the marking line on the screen any more;
and when the marked line part is determined to be effective, searching the part of the marked line which is still effective for display, and blanking the ineffective part of the marked line. Obviously, a marked line portion being valid may also be referred to as a marked line portion being invalid.
For the annotation line in the blanking state, when the annotation line is determined to be valid, meaning that the demonstration content to be annotated by the annotation line is detected to be displayed again, the annotation line is displayed again.
And determining the position of the annotation line according to the new position of the annotation line. When the demonstration content to be marked by the marking line actually moves on the screen, the new position of the marking line is detected to be different from the current display position of the marking line, and the display position of the marking line on the screen is determined according to the new position of the marking line.
The detection of the validity status of the reference line and the new position of the reference line is further illustrated at step in conjunction with the figures.
Fig. 3 is a schematic flow chart of kinds of determining that a callline is invalid according to an embodiment of the present application, including:
in step S301, a annotation content corresponding to the annotation line in the th image and a second annotation content corresponding to the annotation line in the second image are obtained;
specifically, the th annotation is the demonstration data content in the annotation area corresponding to the annotation line in the th image, and the second annotation is the demonstration data content in the annotation area corresponding to the annotation line in the second image, which is worth noting that the second annotation of the annotation line is actually the demonstration content to be annotated by the annotation line.
For example, when the type of the annotation line is a line segment, if the line width of the annotation line is greater than a predetermined width, i.e., the line width of the annotation line is wider, the annotation region may be set to a region covered by the annotation line itself, if the line width of the annotation line is less than the predetermined width, i.e., the line width is narrower, the annotation region may be set to a region covered by the annotation line itself by circles of a predetermined size, further, according to a general annotation convention, the annotation region may be set to a region covered by the annotation line itself plus a region above the annotation line of a predetermined size, when the annotation line may enclose closed regions, e.g., the type of the annotation line is a circle, an ellipse, a rectangle, or a trace line (connecting the first and the last two points of the trace line to form closed regions of a rectangle), etc., the region of the annotation line may be set to a region surrounding the annotation line, e.g., the region of the annotation line may be set to a region around , and the region of the annotation line may be set to a region near the annotation line, e.g., a region of the annotation line, which may be set to a region of the annotation line, e.g., a region of the annotation line, and may be set to a region near the region of the annotation, e.g., a region of the annotation line, which may be set to.
For the annotation line in the display state (the annotation line displayed in whole or in part), th annotation content and second annotation content corresponding to the annotation line are obtained for detecting whether the annotation line is still valid.
In step S302, it is detected whether the th annotation content has a variation with respect to the second annotation content greater than a preset th variation threshold;
comparing the images of the annotation content and the second annotation content, determining whether the variation of the images is greater than a predetermined th variation threshold, and if the variation is greater than a predetermined th variation threshold, indicating that the presentation content corresponding to the annotation line in the current screen is no longer the presentation content to be actually annotated by the annotation line.
The variation of the th labeled content relative to the second labeled content can be calculated as follows:
embodiments calculate the total sum of absolute differences of pixel values of a pixel pair consisting of all pixels of the th and second labeled contents (the pixel pair consists of the th pixel of the th labeled content and the second pixel corresponding to the th pixel in the second labeled content) as the variation amount.
In another embodiment, the corner features of the th annotation and the second annotation are extracted, and the number of unmatched corners is used as the variation.
, in another embodiment, the variation threshold may include two components, a sub-block variation threshold and a sub-block number threshold, wherein the th labeled content and the second labeled content are divided into two or more sub-blocks by the same rule, and then variations of the sub-blocks are detected respectively, when the variation of the corresponding sub-block of the th labeled content and the second labeled content is greater than the sub-block variation threshold, it is determined that the sub-block is varied, and when the number of the varied sub-blocks is greater than the sub-block number threshold, it is determined whether the variation of the th labeled content relative to the second labeled content is greater than a preset th variation threshold, wherein the sub-block number threshold may be an absolute number or a ratio.
In step S303, if it is detected that the variation is greater than the preset th variation threshold, it is determined that the annotation line is invalid.
When the th annotation content and the second annotation content of the annotation line are detected to have a variation larger than a preset th variation threshold, the representation content to be actually annotated by the annotation line is no longer displayed on the screen, such as PPT page turning, the annotation line can be determined to be invalid when the th annotation content in the th image of frames is detected to have a variation larger than a preset th variation threshold relative to the second annotation content, or the th annotation content in the th image collected in periods of time is determined to have a variation larger than a preset th variation threshold relative to the second annotation content.
Fig. 4 is a schematic flow chart of an implementation process for determining partial invalidation of the annotation among types according to an embodiment of the present application, which is detailed as follows:
in step S401, a annotation content corresponding to the annotation line in the th image and a second annotation content corresponding to the annotation line in the second image are obtained;
step S401 is the same as step S301 shown in fig. 3.
In step S402, dividing the th annotation content and the second annotation content into two or more sub-blocks according to a predetermined rule;
embodiments of detecting whether the annotation line is partially invalid are that the th annotation content and the second annotation content are firstly divided into two or more sub-blocks according to a predetermined rule, and then whether the annotation line corresponding to each sub-block is invalid is determined in units of sub-blocks.
In step S403, if it is detected that the variation of the sub-block of the th labeled content from the corresponding sub-block of the second labeled content is greater than a preset second variation threshold, it is determined that the part of the labeled line corresponding to the sub-block is invalid.
After determining the changed sub-block in the th labeled content, setting the part of the labeled line corresponding to the changed sub-block as invalid, performing a blanking operation, and reserving the other part of the labeled line.
The validity status of each section of the annotation line can be determined after analyzing the change condition of the sub-block of the th annotation content in , or the validity status of the annotation line can be determined after analyzing the change condition of each sub-block of the th annotation content for time.
Fig. 5 is a schematic flow chart illustrating an implementation process of determining a new position of a callout line according to types provided in the embodiment of the present application, which is detailed as follows:
in step S501, a annotation content corresponding to the annotation line in the th image and a second annotation content corresponding to the annotation line in the second image are obtained;
step S501 is the same as step S301 shown in fig. 3.
In step S502, when the variation of the th annotation content with respect to the second annotation content is greater than a preset third variation threshold, searching the th image for the second annotation content;
when it is detected that the variation of the th annotation content with respect to the second annotation content is greater than the preset variation threshold, it may be that the line actually annotates the presentation content, and the method for detecting whether the variation is greater than the variation threshold may employ a calculation method similar to the step S302 shown in FIG. 3.
When the second annotation content is searched for in the image, the second annotation content can be searched for in the range of the full image in the image, or can also be searched for in the range of the predetermined image in the image.
In step S503, if the second annotation content is searched in the th image, the new position of the annotation line is determined according to the position of the second annotation content.
When the second annotation content is searched for in the image, it means that the actual annotation content corresponding to the annotation line exists in the current th image, and the annotation line is moved to the found position of the second annotation content, so as to determine the new position of the annotation line, when the second annotation content is searched for in the th image , that is, the new position of the annotation line is determined, or, in the duration of , the second annotation content is searched for in the same position of the th image, and then the new position of the annotation line is determined.
In another embodiment, after the image is searched for the second annotation content, the new position of the annotation line is not determined immediately, and further step detects whether the reference object of the annotation line exists in the image, and if the reference object of the annotation line exists, the new position of the annotation line is determined.As shown in FIG. 1, the demo content 113 is the reference object of the annotation line, the reference object 113 exists in the second image simultaneously with the second annotation content 112 of the annotation line, the reference object 113 is extracted at the same time when the second annotation content 112 of the annotation line is extracted, and there may be a plurality of reference objects 113. after the second annotation content 112 of the annotation line is searched for in the image, the corresponding position of the image is further to detect whether the reference object 113 of the annotation line exists, if the reference object also exists, the new position of the annotation line is determined, if there are a plurality of reference objects, all the reference objects may be detected, or only the number of reference objects may be detected to exclude the occurrence of wrong page search of the same reference content.
Fig. 6 is a schematic flow chart of an implementation process for determining an effective annotation line of types provided in the embodiment of the present application, which is detailed as follows:
in step S601, if the annotation line is in a blanking state, searching for a second annotation content in the annotation area corresponding to the annotation line in the second image;
when the demonstration material turns pages or rolls, if the actual annotation content of the annotation line is not displayed on the screen any more, the annotation line corresponding to the demonstration material is switched to a blanking state, and the annotation line and the annotation content marked by the annotation line (i.e. the second annotation content) can be kept in the demonstration system.
In step S602, if the second annotation content is searched for in the th image, it is determined that the annotation line is valid, or that the annotation line is partially valid.
When the second annotation content is searched in the th image of , the presentation material marked by the annotation line is determined to be presented again, or the presentation material marked by the annotation line is determined to be presented again after the second annotation content is searched at the same position of the th image in time.
If the search result is a full match, the annotation line is determined to be valid, and if the search result is a partial match, the annotation line is determined to be valid.
From the location of the second annotation content searched for in the th image, the new location of the annotation line can be determined.
The method for searching the th image for the second annotation content of the annotation line is similar to the method described in fig. 5.
, in another embodiment, before the step of detecting a change in the th image relative to the second image, visibility of the annotation line is also determined based on graphical window information determined when the annotation line was drawn, wherein the graphical window information may include or more of window size, window position, window stacking order, and window visibility, information for all graphical windows on a Graphical User Interface (GUI) may be obtained through an API of an operating system.
It should be understood that, the sequence numbers of the steps in the foregoing embodiments do not imply an execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.
Fig. 7 is a schematic structural diagram of a display control apparatus for a callout line of demonstration devices according to an embodiment of the present application, which is detailed as follows:
the display control device of the mark line of the demonstration equipment comprises:
an th image capturing unit 701, configured to capture a th image, where the th image is a full or partial picture of a currently displayed presentation;
a mark line state determination unit 702 configured to detect a change in the th image with respect to a second image, which is a whole or partial screen of the presentation material displayed when the mark line is drawn, and determine a validity state of the mark line and/or a new position of the mark line;
the annotation line control unit 703 is configured to blank or display the annotation line according to the validity state of the annotation line, and/or change the position of the annotation line according to the new position of the annotation line.
Optionally, the marking line state determining unit 702 includes:
an annotation content acquiring subunit, configured to acquire a annotation content corresponding to the annotation line in the image, and acquire a second annotation content corresponding to the annotation line in the second image;
a marking content change detection subunit, configured to detect whether a change amount of the th marking content with respect to the second marking content is larger than a preset th change threshold;
and the marking invalidity determining subunit is configured to determine that the marking line is invalid when the variation is detected to be greater than a preset -th variation threshold.
Optionally, the marking line state determining unit 702 includes:
a second annotation content acquiring subunit, configured to acquire a -th annotation content corresponding to the annotation line in the -th image, and acquire a second annotation content corresponding to the annotation line in the second image;
a block division subunit, configured to divide the th labeled content and the second labeled content into two or more sub-blocks according to a predetermined rule;
and a partial annotation line invalidation determining subunit, configured to determine that the partial annotation line corresponding to the sub-block of the -th annotation content is invalid if it is detected that a variation between the sub-block and the corresponding sub-block of the second annotation content is greater than a preset second variation threshold.
Optionally, the marking line state determining unit 702 includes:
a third annotation content acquiring subunit, configured to acquire a annotation content corresponding to the annotation line in the th image, and acquire a second annotation content corresponding to the annotation line in the second image;
an th searching subunit, configured to search the th image for the second annotation content when the th annotation content has a variation amount with respect to the second annotation content that is greater than a preset third variation threshold;
an position determining subunit, configured to determine a new position of the annotation line according to the position of the searched second annotation content if the second annotation content is searched in the th image.
Optionally, the marking line state determining unit 702 includes:
a second searching subunit, configured to search, if the annotation line is in a blanking state, for second annotation content in the -th image, where the second annotation content is content of an annotation area corresponding to the annotation line in the second image;
an annotation validity determining subunit, configured to determine that the annotation line is valid or that the annotation line is partially valid if the second annotation content is searched for in the th image.
Optionally, the label line state determining unit 702 further includes:
a second position determination subunit, configured to determine a new position of the annotation line according to the position of the second annotation content searched in the th image.
The display control device of the mark line shown in fig. 7 corresponds to the display control method of the mark line provided in the present application, and details are not repeated.
Fig. 8 is a schematic diagram of a presentation device provided in an embodiment of this application , as shown in fig. 8, the presentation device 8 of this embodiment includes a processor 80, a memory 81, and a computer program 82 stored in the memory 81 and operable on the processor 80, such as a display control program of a mark line of the presentation device, the processor 80 implements the steps in the embodiments of the mark line display control method of each presentation device described above when executing the computer program 82, or the processor 80 implements the functions of each module/unit in each apparatus embodiment described above when executing the computer program 82.
Illustratively, the computer program 82 may be partitioned into or more modules/units, the or more modules/units being stored in the memory 81 and executed by the processor 80 to carry out the present application, the or more modules/units may be the series of computer program instruction segments that describe the execution of the computer program 82 in the presentation device 8. for example, the computer program 82 may be partitioned into:
an image acquisition unit for acquiring image, wherein the image is the whole picture or partial picture of the currently displayed demonstration material;
a mark line state determination unit, configured to detect a change of the th image relative to a second image, the second image being a whole or partial picture of presentation material displayed when the mark line is drawn, and determine a validity state of the mark line and/or a new position of the mark line;
and the marking line control unit is used for blanking or displaying the marking line according to the validity state of the marking line and/or changing the position of the marking line according to the new position of the marking line.
The presentation device 8 may be a computing device such as a desktop computer, a notebook, a palmtop computer, etc. The presentation device may include, but is not limited to, a processor 80, a memory 81. Those skilled in the art will appreciate that fig. 8 is merely an example of presentation device 8 and does not constitute a limitation of presentation device 8 and may include more or fewer components than shown, or some components in combination, or different components, e.g., the presentation device may also include input-output devices, network access devices, buses, etc.
The Processor 80 may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Array (FPGA) or other Programmable logic device, discrete or transistor logic, discrete hardware components, etc.
The memory 81 may be an internal storage unit of the presentation device 8, such as a hard disk or a memory of the presentation device 8. the memory 81 may also be an external storage device of the presentation device 8, such as a plug-in hard disk provided on the presentation device 8, a Smart Memory Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), etc. the memory 81 may also include both an internal storage unit of the presentation device 8 and an external storage device. the memory 81 is used to store the computer program and other programs and data required by the presentation device. the memory 81 may also be used to temporarily store data that has been or will be output.
It is obvious to those skilled in the art that, for convenience and simplicity of description, only the division of the above functional units and modules is illustrated, and in practical applications, the above functions may be distributed by different functional units and modules as needed, that is, the internal structure of the apparatus is divided into different functional units or modules to complete all or part of the above described functions.
In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to the related descriptions of other embodiments for parts that are not described or illustrated in a certain embodiment.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
For example, the above-described embodiments of the apparatus/terminal device are merely illustrative, for example, the modules or units may be divided into only logical functional divisions, and other divisions may be implemented in practice, for example, a plurality of units or components may be combined or integrated with another systems, or features may be omitted or not executed, and other points may be displayed or discussed, wherein the mutual coupling or direct coupling or communication connection may be through interfaces, indirect coupling or communication connection of the apparatuses or units may be electrical, mechanical or other forms.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, that is, may be located in places, or may also be distributed on multiple network units.
In addition, the functional units in the embodiments of the present application may be integrated into processing units, or each unit may exist alone physically, or two or more units are integrated into units.
The integrated modules/units, if implemented as software functional units and sold or used as a stand-alone product, may be stored in computer-readable storage media, with the understanding that the present application implements all or part of the processes of the above-described method embodiments, or may be implemented by a computer program instructing associated hardware, the computer program being storable in computer-readable storage media, which when executed by a processor, may implement the steps of the above-described method embodiments.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present application and are intended to be included within the scope of the present application.
Claims (14)
1, A display control method of a mark line of a demonstration device, characterized in that the display control method of the mark line of the demonstration device comprises:
collecting th image, wherein the th image is all or part of the currently displayed demonstration material;
detecting a change of the th image relative to a second image, wherein the second image is a whole picture or a partial picture of the demonstration material displayed when the mark line is drawn, and determining the validity state of the mark line and/or the new position of the mark line;
blanking or displaying the marking line according to the validity state of the marking line, and/or changing the position of the marking line according to the new position of the marking line.
2. The method according to claim 1, wherein a change in the th image relative to the second image is detected, and the step of determining the validity state of the annotation line comprises:
acquiring annotation content corresponding to the annotation line in the th image and acquiring second annotation content corresponding to the annotation line in the second image;
detecting whether the variation of the th annotation content relative to the second annotation content is greater than a preset th variation threshold;
and if the variation is detected to be larger than a preset th variation threshold, determining that the marking line is invalid.
3. The display control method of a mark line of a presentation device according to claim 1, wherein a change of the th image relative to the second image is detected, and the step of determining the validity state of the mark line includes:
acquiring annotation content corresponding to the annotation line in the th image and acquiring second annotation content corresponding to the annotation line in the second image;
dividing the th annotation content and the second annotation content into two or more sub-blocks according to a predetermined rule;
and if the variation of the sub-block of the th labeled content and the corresponding sub-block of the second labeled content is detected to be larger than a preset second variation threshold, determining that the part of the labeled line corresponding to the sub-block is invalid.
4. The method of controlling display of a mark line of a presentation device according to claim 1, wherein a change of the th image relative to the second image is detected, and the step of determining a new position of the mark line comprises:
acquiring annotation content corresponding to the annotation line in the th image and acquiring second annotation content corresponding to the annotation line in the second image;
when the nd annotation content has a variation with respect to the second annotation content greater than a preset third variation threshold, searching the nd image for the second annotation content;
if the second annotation content is searched in the th image, determining a new position of the annotation line according to the position of the searched second annotation content.
5. The display control method of a mark line of a presentation device according to claim 1, wherein a change of the th image relative to the second image is detected, and the step of determining the validity state of the mark line includes:
searching image for a second annotation content if the annotation line is in blanking state, the second annotation content being the content of the annotation area corresponding to the annotation line in the second image;
if the second annotation content is searched for in the th image, it is determined that the annotation line is valid, or that the annotation line portion is valid.
6. The method of controlling display of a highlight line of a presentation device according to claim 5, wherein a change of said th image with respect to a second image is detected, and the step of determining a new position of said highlight line comprises:
determining a new position of the annotation line according to the position of the second annotation content searched in the th image.
7, A display control device of a mark line of a presentation apparatus, characterized by comprising:
an image acquisition unit for acquiring image, wherein the image is the whole picture or partial picture of the currently displayed demonstration material;
a mark line state determination unit, configured to detect a change of the th image relative to a second image, the second image being a whole or partial picture of presentation material displayed when the mark line is drawn, and determine a validity state of the mark line and/or a new position of the mark line;
and the marking line control unit is used for blanking or displaying the marking line according to the validity state of the marking line and/or changing the position of the marking line according to the new position of the marking line.
8. The display control device of a mark line according to claim 7, wherein the mark line state determination unit includes:
an annotation content acquiring subunit, configured to acquire a annotation content corresponding to the annotation line in the image, and acquire a second annotation content corresponding to the annotation line in the second image;
a marking content change detection subunit, configured to detect whether a change amount of the th marking content with respect to the second marking content is larger than a preset th change threshold;
and the marking invalidity determining subunit is configured to determine that the marking line is invalid when the variation is detected to be greater than a preset -th variation threshold.
9. The display control device of a mark line of a presentation apparatus according to claim 7, wherein the mark line state determination unit includes:
a second annotation content acquiring subunit, configured to acquire a -th annotation content corresponding to the annotation line in the -th image, and acquire a second annotation content corresponding to the annotation line in the second image;
a block division subunit, configured to divide the th labeled content and the second labeled content into two or more sub-blocks according to a predetermined rule;
and a partial annotation line invalidation determining subunit, configured to determine that the partial annotation line corresponding to the sub-block of the -th annotation content is invalid if it is detected that a variation between the sub-block and the corresponding sub-block of the second annotation content is greater than a preset second variation threshold.
10. The display control device of a mark line of a presentation apparatus according to claim 7, wherein the mark line state determination unit includes:
a third annotation content acquiring subunit, configured to acquire a annotation content corresponding to the annotation line in the th image, and acquire a second annotation content corresponding to the annotation line in the second image;
an th searching subunit, configured to search the th image for the second annotation content when the th annotation content has a variation amount with respect to the second annotation content that is greater than a preset third variation threshold;
an position determining subunit, configured to determine a new position of the annotation line according to the position of the searched second annotation content if the second annotation content is searched in the th image.
11. The display control device of a mark line of a presentation apparatus according to claim 7, wherein the mark line state determination unit includes:
a second searching subunit, configured to search, if the annotation line is in a blanking state, for second annotation content in the -th image, where the second annotation content is content of an annotation area corresponding to the annotation line in the second image;
an annotation validity determining subunit, configured to determine that the annotation line is valid or that the annotation line is partially valid if the second annotation content is searched for in the th image.
12. The display control device of a mark line of a presentation apparatus as claimed in claim 11, wherein the mark line state determination unit further comprises:
a second position determination subunit, configured to determine a new position of the annotation line according to the position of the second annotation content searched in the th image.
Presentation device of the kind 13, , comprising a memory, a processor and a computer program stored in the memory and being executable on the processor, characterized in that the processor, when executing the computer program, carries out the steps of a method for controlling the display of a logo line of a presentation device according to any of claims 1 to 6 and .
14, computer-readable storage medium, in which a computer program is stored which, when being executed by a processor, carries out the steps of a method for controlling the display of a mark-up line of a presentation device as claimed in any one of claims 1 to 6 to .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910942614.4A CN110737417B (en) | 2019-09-30 | 2019-09-30 | Demonstration equipment and display control method and device of marking line of demonstration equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910942614.4A CN110737417B (en) | 2019-09-30 | 2019-09-30 | Demonstration equipment and display control method and device of marking line of demonstration equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110737417A true CN110737417A (en) | 2020-01-31 |
| CN110737417B CN110737417B (en) | 2024-01-23 |
Family
ID=69269840
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910942614.4A Active CN110737417B (en) | 2019-09-30 | 2019-09-30 | Demonstration equipment and display control method and device of marking line of demonstration equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110737417B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111737510A (en) * | 2020-05-28 | 2020-10-02 | 杭州视在数科信息技术有限公司 | Label processing method and application for road traffic scene image algorithm |
| CN113342245A (en) * | 2021-06-09 | 2021-09-03 | 浙江大华技术股份有限公司 | File labeling method and device, storage medium and electronic device |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050183005A1 (en) * | 2004-02-12 | 2005-08-18 | Laurent Denoue | Systems and methods for freeform annotations |
| CN106774868A (en) * | 2016-12-06 | 2017-05-31 | 杨超峰 | A kind of wireless demo device |
| CN106776514A (en) * | 2016-12-15 | 2017-05-31 | 广州视源电子科技股份有限公司 | A kind of annotation method and device |
| CN106791574A (en) * | 2016-12-16 | 2017-05-31 | 联想(北京)有限公司 | Video labeling method, device and video conferencing system |
| CN108459836A (en) * | 2018-01-19 | 2018-08-28 | 广州视源电子科技股份有限公司 | Annotate display methods, device, equipment and storage medium |
| CN109189970A (en) * | 2018-09-20 | 2019-01-11 | 北京京东尚科信息技术有限公司 | Picture similarity comparison method and device |
| CN109658481A (en) * | 2018-12-24 | 2019-04-19 | 北京旷视科技有限公司 | Image labeling method and device, feature drawing generating method and device |
| CN109934851A (en) * | 2019-03-28 | 2019-06-25 | 新华三技术有限公司 | A kind of mask method, device and machine readable storage medium |
| CN109960452A (en) * | 2017-12-26 | 2019-07-02 | 腾讯科技（深圳）有限公司 | Image processing method and its device, storage medium |
-
2019
- 2019-09-30 CN CN201910942614.4A patent/CN110737417B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050183005A1 (en) * | 2004-02-12 | 2005-08-18 | Laurent Denoue | Systems and methods for freeform annotations |
| CN106774868A (en) * | 2016-12-06 | 2017-05-31 | 杨超峰 | A kind of wireless demo device |
| CN106776514A (en) * | 2016-12-15 | 2017-05-31 | 广州视源电子科技股份有限公司 | A kind of annotation method and device |
| CN106791574A (en) * | 2016-12-16 | 2017-05-31 | 联想(北京)有限公司 | Video labeling method, device and video conferencing system |
| CN109960452A (en) * | 2017-12-26 | 2019-07-02 | 腾讯科技（深圳）有限公司 | Image processing method and its device, storage medium |
| CN108459836A (en) * | 2018-01-19 | 2018-08-28 | 广州视源电子科技股份有限公司 | Annotate display methods, device, equipment and storage medium |
| CN109189970A (en) * | 2018-09-20 | 2019-01-11 | 北京京东尚科信息技术有限公司 | Picture similarity comparison method and device |
| CN109658481A (en) * | 2018-12-24 | 2019-04-19 | 北京旷视科技有限公司 | Image labeling method and device, feature drawing generating method and device |
| CN109934851A (en) * | 2019-03-28 | 2019-06-25 | 新华三技术有限公司 | A kind of mask method, device and machine readable storage medium |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111737510A (en) * | 2020-05-28 | 2020-10-02 | 杭州视在数科信息技术有限公司 | Label processing method and application for road traffic scene image algorithm |
| CN111737510B (en) * | 2020-05-28 | 2024-04-16 | 杭州视在数科信息技术有限公司 | Label processing method and application for road traffic scene image algorithm |
| CN113342245A (en) * | 2021-06-09 | 2021-09-03 | 浙江大华技术股份有限公司 | File labeling method and device, storage medium and electronic device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110737417B (en) | 2024-01-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20180232135A1 (en) | Method for window displaying on a mobile terminal and mobile terminal | |
| CN111008520B (en) | Annotating method and device, terminal equipment and storage medium | |
| CN103500066B (en) | Screenshot device and method suitable for touch screen equipment | |
| CN108874292B (en) | Comment display method and device and intelligent interactive panel | |
| US8624928B2 (en) | System and method for magnifying a webpage in an electronic device | |
| US10013156B2 (en) | Information processing apparatus, information processing method, and computer-readable recording medium | |
| CN107844953B (en) | Conference file management method, device, terminal and computer readable storage medium | |
| CN104574454B (en) | Image processing method and device | |
| US9880721B2 (en) | Information processing device, non-transitory computer-readable recording medium storing an information processing program, and information processing method | |
| CN109298909B (en) | Window adjusting method, mobile terminal and computer readable storage medium | |
| AU2013222958A1 (en) | Method and apparatus for object size adjustment on a screen | |
| US11003340B2 (en) | Display device | |
| EP3822757A1 (en) | Method and apparatus for setting background of ui control | |
| CN104461312A (en) | Display control method and electronic equipment | |
| CN109697004B (en) | Method, device and equipment for writing annotation by touch equipment and storage medium | |
| CN107870795B (en) | Method and device for displaying electronic map | |
| KR20150106330A (en) | Image display apparatus and image display method | |
| US10585573B2 (en) | Method and system for zooming-in picture on mobile terminal | |
| CN110737417A (en) | demonstration equipment and display control method and device of marking line thereof | |
| CN107122104B (en) | Data display method and device | |
| CN111143731A (en) | Display method and device for webpage interface zooming and terminal equipment | |
| CN108415890B (en) | Method for setting top display unit cell, terminal equipment and computer readable storage medium | |
| US20130169660A1 (en) | Image editing system and method | |
| CN109766530B (en) | Method and device for generating chart frame, storage medium and electronic equipment | |
| US10430458B2 (en) | Automated data extraction from a chart from user screen selections |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |