CN113721829B - Gesture operation-based panoramic courseware smooth rotation control method and gesture operation-based panoramic courseware smooth rotation control system - Google Patents
Gesture operation-based panoramic courseware smooth rotation control method and gesture operation-based panoramic courseware smooth rotation control system Download PDFInfo
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- CN113721829B CN113721829B CN202110919080.0A CN202110919080A CN113721829B CN 113721829 B CN113721829 B CN 113721829B CN 202110919080 A CN202110919080 A CN 202110919080A CN 113721829 B CN113721829 B CN 113721829B
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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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Abstract
The invention relates to the technical field of gesture recognition, in particular to a method for smooth rotation control of panoramic courseware based on gesture operation, which comprises the following steps: acquiring position information of a manipulator, wherein the position information comprises coordinate point information of the manipulator and front orientation information of the manipulator; displaying a display picture of the executed file on the touch control panel in a matching manner according to the position information; acquiring a touch track applied to the touch control panel; and generating a control instruction according to the touch track based on the display picture and controlling the executed file. According to the invention, the panoramic courseware in the panoramic education room can be controlled by combining the eye orientation and the accurate recognition of gestures, so that the teaching efficiency and the teaching experience of the classroom can be effectively improved.
Description
Technical Field
The invention relates to the technical field of gesture recognition, in particular to a method and a system for smooth rotation control of panoramic courseware based on gesture operation.
Background
Today, with the development and popularization of wireless mobile networks and 5G technologies, the teaching mode of the traditional classroom cannot meet the increasing learning requirement, and the single content display cannot meet the requirements of teacher teaching and students to be educated. In fact, the updating of the display means is a necessary trend of education development, and in the traditional teaching display means, characters, pictures, videos and the like are only unilateral expressions: the static picture can only provide a certain angle image of the scene, and even a wide-angle lens can not comprehensively and effectively carry out panoramic display on the scene; the dynamic video can make the user have a comprehensive understanding of the scene, but the visual angle of the visual image is still limited, and the watching mode depends on the shooting mode of the photographer and is not free. In order to improve classroom teaching efficiency and teaching effect, upgrade teacher and student's courseware display method, reduce the operation degree of difficulty, consider gesture recognition technology's increasingly complete, hope through gesture recognition technology to improve classroom efficiency.
The panoramic screen technology based on the curved surface is improved, more and more high-specification lectures and training are performed, the panoramic screen with the long curved surface is used for providing higher requirements for common gesture operation control, when a lecturer is performing lecture or teaching, the lecturer can only see a part of the panoramic screen at one point due to the wider width of the panoramic screen, and the lecturer is most direct and comfortable to control the part of the pictures in the view of the lecturer, so that the method is hoped to effectively control panoramic courseware or panoramic files through the body and gestures, capture the view of the manipulator, control the picture part in the view range by matching with the view, and the rest of the picture parts of the panoramic screen are adaptively changed according to the change of the control part, thereby realizing the effect of controlling the whole from local.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a panoramic courseware smooth rotation control method and system based on gesture operation.
In order to achieve the above purpose, the present invention provides the following technical solutions:
a method for smooth rotation control of panoramic courseware based on gesture operation comprises the following steps:
s1, acquiring position information of an operator, wherein the position information comprises coordinate point information of the operator and front orientation information of the operator;
s2, displaying a display picture of the executed file on the touch control panel in a matching mode according to the position information;
s3, acquiring a touch track applied to the touch control panel;
and S4, generating a control instruction according to the touch track based on the display picture and controlling the executed file.
As a preferable mode of the present invention, before S1, the method further comprises:
s0, judging whether a start confirmation instruction is input, and if the start confirmation instruction is input, triggering the S1.
As a preferred aspect of the present invention, the S1 includes:
s1.1: the camera takes a picture of the operator and identifies facial features of the operator;
s1.2: obtaining the space coordinates of two eyes of a manipulator, and obtaining the front orientation information of the manipulator towards the panoramic display screen through calculation;
the coordinate point information includes coordinate information of left and right eyes and coordinate information of a midpoint of both eyes.
As a preferred aspect of the present invention, the S2 includes:
and calculating and obtaining a visual area when a camera operator faces the panoramic display screen according to the coordinate information of the left eye and the right eye, the coordinate information of the middle points of the two eyes and the three-dimensional space information of the panoramic display screen, and intercepting the display picture corresponding to the visual area from the executed file and displaying the display picture on the touch control panel.
As a preferred aspect of the present invention, after S2, the method further includes:
a matching ending step of acquiring matching feedback information, analyzing the matching feedback information, and executing the track acquisition step if the matching feedback information is successful in confirming matching; and if the matching feedback information is that the matching is not successful, executing a touch control adjusting step.
Preferably, the touch adjustment step includes obtaining an adjustment control gesture of a manipulator through a capacitive sensing system, generating an adjustment control instruction according to the adjustment control gesture, adjusting display area information of the display screen, and generating the latest display screen.
As a preferred aspect of the present invention, the S3 includes:
the method comprises the steps of distinguishing the preset control type of the touch track, calculating and obtaining the offset and the moving speed on the X axis and the Y axis, generating the control instruction by combining the three-dimensional space information, and controlling the response on the panoramic display screen.
As an preference of the present technical solution, when the executed file is a panoramic picture, the S3 specifically includes:
s3.1a, distinguishing a preset control type to which the touch track belongs;
s3.2a, obtaining the offset direction, the offset radian of left and right rotation and the distance of up and down offset according to the relative offset of the X and Y axes;
s3.3a, obtaining the resolution of the executed file in the panoramic display screen display area;
s3.4a, converting absolute coordinates of the panoramic picture in a display area after left-right rotation and up-down movement deviation according to the coordinates of the display picture;
and S3.5a, rendering the offset panoramic picture image in a panoramic display area for display.
As an preference of the present technical solution, when the executed file is a panoramic video, the S3 specifically includes:
s3.1b, distinguishing a preset control type to which the touch track belongs;
s3.2b, obtaining the offset direction, the offset radian rotating left and right and the distance of the vertical offset according to the relative offset of the X and Y axes, and simultaneously decoding the panoramic video into a panoramic video single-frame picture;
s3.3b, obtaining the resolution of the panoramic video single-frame picture in the panoramic display screen display area;
s3.4b, converting absolute coordinates of the panoramic picture in a display area after left-right rotation and up-down movement deviation according to the coordinates of the display picture;
s3.5b, when the panoramic video single-frame picture boundary is displayed during left and right rotation, copying 50% of the other side area of the panoramic video single-frame picture, and then splicing the area to the current panoramic video single-frame picture boundary to achieve the effect of 360-degree rotation;
and S3.6b, rendering the single-frame picture of the shifted panoramic video in a panoramic display area for display.
The gesture operation-based panoramic courseware smooth rotation control system comprises a panoramic display screen, a camera, a touch control panel and a background server.
By implementing the technical scheme, the invention has the following advantages:
according to the invention, the position information of the operator is acquired, the display picture is obtained according to the position information, gesture control is performed on the display picture, the control instruction is produced and executed, the picture part in the visual field range is controlled from capturing the visual field of the operator and then matched with the visual field, and the rest picture parts of the panoramic screen are adaptively changed according to the change of the control part, so that the effect of controlling the whole world from local is realized.
Drawings
FIG. 1 is a diagram showing the practice of the method of the present invention;
FIG. 2 is a top view of FIG. 1;
FIG. 3 is a flow chart of the method of the present invention;
FIG. 4 is a flowchart showing the embodiment of S1 in the present invention;
FIG. 5 is a flowchart of S3 under panoramic pictures in the present invention;
FIG. 6 is a flow chart of the invention under S3 panoramic video;
fig. 7 is a block diagram of the gesture-based panoramic courseware smooth rotation manipulation system of the present invention.
Wherein, 1-panorama display screen, 2-control panel, 3-camera.
Description of the embodiments
The invention is further illustrated below in conjunction with specific examples and experimental data. It should be understood that the embodiments of the present invention are only for illustrating the present invention and not for limiting the present invention, and various substitutions and modifications made according to the general knowledge and conventional means of the person skilled in the art should be included in the scope of the present invention without departing from the technical spirit of the present invention.
Examples
As shown in fig. 1-6, the method for smooth rotation control of panoramic courseware based on gesture operation comprises the following steps:
s1, acquiring position information of an operator, wherein the position information comprises coordinate point information of the operator and front orientation information of the operator;
s2, displaying the display picture of the executed file on the touch control panel 2 in a matching mode according to the position information;
s3, acquiring a touch track applied to the touch control panel 2;
and S4, generating a control instruction according to the touch track based on the display picture and controlling the executed file.
According to the invention, the position information of the operator is acquired, the display picture is obtained according to the position information, gesture control is performed on the display picture, the control instruction is produced and executed, the picture part in the visual field range is controlled from capturing the visual field of the operator and then matched with the visual field, and the rest picture parts of the panoramic screen are adaptively changed according to the change of the control part, so that the effect of controlling the whole world from local is realized.
Also before the S1, there is:
s0, judging whether a start confirmation instruction is input, and if the start confirmation instruction is input, triggering the fixed point step. When the touch control panel detects a preset gesture touch track in a preset starting confirmation area, the touch control panel considers that the starting confirmation instruction is received, the touch signal is sent to a background processor, and the background processor considers that the starting confirmation instruction is input, so that the S1 is triggered.
Since the lecturer (i.e., the operator) generally operates in such a way that the face faces the panoramic display screen 1 first and then faces away from the panoramic display screen 1 to begin lecturing, the flow is to confirm first and then start to execute S1.
The S1 comprises the following steps:
s1.1: the camera 3 takes a photograph of the operator and recognizes the facial features of the operator;
s1.2: obtaining the space coordinates of two eyes of a manipulator, and obtaining the front orientation information of the manipulator towards the panoramic display screen through calculation;
the coordinate point information includes coordinate information of left and right eyes and coordinate information of a midpoint of both eyes. Therefore, the orientation information of the lecturer facing the panoramic display screen 1 is accurately acquired, so that the picture in the field of view of the lecturer can be obtained through later calculation.
The step S2 comprises the following steps:
and calculating and obtaining a visual area when a camera operator faces the panoramic display screen 1 according to the coordinate information of the left eye and the right eye, the coordinate information of the middle points of the two eyes and the three-dimensional space information of the panoramic display screen 1, and intercepting the display picture corresponding to the visual area from the executed file and displaying the display picture on the touch control panel 2.
Further comprising, after S2:
a matching ending step of acquiring matching feedback information, analyzing the matching feedback information, and executing the track acquisition step if the matching feedback information is successful in confirming matching; and if the matching feedback information is that the matching is not successful, executing a touch control adjusting step.
Since the lecturer faces the student or the audience during the lecture, the lecturer is always facing away from the panoramic display screen 1, and thus cannot always track and obtain the direction information of the lecturer to always match, the lecturer needs to confirm after the touch control panel 2 is matched to a correct display screen through gesture control, and of course, the display screen needs to be finely adjusted through gesture control when the display screen is not correctly matched. In the touch control adjustment step, the touch control panel 2 is touched, and the matched display screen is dragged, rotated or enlarged to be smaller.
The step S3 comprises the following steps:
the method comprises the steps of distinguishing the preset control type of the touch track, calculating and obtaining the offset and the moving speed on the X axis and the Y axis, generating the control instruction by combining the three-dimensional space information, and controlling the response on the panoramic display screen.
Finger touch and sliding received by a screen virtual rocker of the touch control panel 2 and finger pressure corresponding to the finger touch and sliding are used for distinguishing which preset control type the control track belongs to, such as dragging movement, rotating movement and picture size adjustment control.
When the executed file is a panoramic picture, the step S3 specifically includes:
s3.1a, distinguishing a preset control type to which the touch track belongs;
s3.2a, obtaining the offset direction, the offset radian of left and right rotation and the distance of up and down offset according to the relative offset of the X and Y axes;
s3.3a, obtaining the resolution of the executed file in the panoramic display screen display area;
s3.4a, converting absolute coordinates of the panoramic picture in a display area after left-right rotation and up-down movement deviation according to the coordinates of the display picture;
and S3.5a, rendering the offset panoramic picture image in a panoramic display area for display.
Examples
Based on example 1, the difference from example 1 is that:
when the executed file is a panoramic video, the step S3 specifically includes:
s3.1b, distinguishing a preset control type to which the touch track belongs;
s3.2b, obtaining the offset direction, the offset radian rotating left and right and the distance of the vertical offset according to the relative offset of the X and Y axes, and simultaneously decoding the panoramic video into a panoramic video single-frame picture;
s3.3b, obtaining the resolution of the panoramic video single-frame picture in the panoramic display screen display area;
s3.4b, converting absolute coordinates of the panoramic picture in a display area after left-right rotation and up-down movement deviation according to the coordinates of the display picture;
s3.5b, when the panoramic video single-frame picture boundary is displayed during left and right rotation, copying 50% of the other side area of the panoramic video single-frame picture, and then splicing the area to the current panoramic video single-frame picture boundary to achieve the effect of 360-degree rotation;
and S3.6b, rendering the single-frame picture of the shifted panoramic video in a panoramic display area for display.
Examples
Is a system based on example 1 and example 2:
as shown in fig. 1, 2 and 7, the gesture operation-based panoramic courseware smooth rotation control system comprises a panoramic display screen, a camera, a touch control panel and a background server.
Claims (8)
1. The gesture operation-based panoramic courseware smooth rotation control method is characterized by comprising the following steps of:
s1, acquiring position information of an operator, wherein the position information comprises coordinate point information of the operator and front orientation information of the operator;
s2, displaying a display picture of the executed file on the touch control panel in a matching mode according to the position information;
s3, acquiring a touch track applied to the touch control panel;
s4, generating a control instruction according to the touch track based on the display picture and controlling the executed file;
the S1 comprises the following steps:
s1.1: the camera takes a picture of the operator and identifies facial features of the operator;
s1.2: obtaining the space coordinates of two eyes of a manipulator, and obtaining the front orientation information of the manipulator towards the panoramic display screen through calculation;
the coordinate point information comprises coordinate information of left and right eyes and coordinate information of middle points of two eyes;
the step S2 comprises the following steps:
and calculating and obtaining a visual area when a camera operator faces the panoramic display screen according to the coordinate information of the left eye and the right eye, the coordinate information of the middle points of the two eyes and the three-dimensional space information of the panoramic display screen, and intercepting the display picture corresponding to the visual area from the executed file and displaying the display picture on the touch control panel.
2. The gesture-based panoramic courseware smooth rotation manipulation method according to claim 1, further comprising, before S1:
s0, judging whether a start confirmation instruction is input, and if the start confirmation instruction is input, triggering the S1.
3. The gesture-based panoramic courseware smooth rotation manipulation method according to claim 1, further comprising, after said S2:
a matching ending step of acquiring matching feedback information, analyzing the matching feedback information, and executing the track acquisition step if the matching feedback information is successful in confirming matching; and if the matching feedback information is that the matching is not successful, executing a touch control adjusting step.
4. The method for smooth rotational manipulation of panoramic courseware based on gesture operation according to claim 3, wherein the touch adjustment step comprises obtaining an adjustment manipulation gesture of a manipulator through a capacitance sensing system, generating an adjustment control command according to the adjustment manipulation gesture, adjusting display area information of the display screen, and generating the latest display screen.
5. The gesture-based panoramic courseware smooth rotation manipulation method according to claim 2, wherein the S3 comprises:
the method comprises the steps of distinguishing the preset control type of the touch track, calculating and obtaining the offset and the moving speed on the X axis and the Y axis, generating the control instruction by combining the three-dimensional space information, and controlling the response on the panoramic display screen.
6. The gesture-based panoramic courseware smooth rotation manipulation method according to claim 5, wherein when the executed file is a panoramic picture, the step S3 specifically includes:
s3.1a, distinguishing a preset control type to which the touch track belongs;
s3.2a, obtaining the offset direction, the offset radian of left and right rotation and the distance of up and down offset according to the relative offset of the X and Y axes;
s3.3a, obtaining the resolution of the executed file in the panoramic display screen display area;
s3.4a, converting absolute coordinates of the panoramic picture in a display area after left-right rotation and up-down movement deviation according to the coordinates of the display picture;
and S3.5a, rendering the offset panoramic picture image in a panoramic display area for display.
7. The gesture-based panoramic courseware smooth rotation manipulation method according to claim 5, wherein when the executed file is a panoramic video, the step S3 specifically includes:
s3.1b, distinguishing a preset control type to which the touch track belongs;
s3.2b, obtaining the offset direction, the offset radian rotating left and right and the distance of the vertical offset according to the relative offset of the X and Y axes, and simultaneously decoding the panoramic video into a panoramic video single-frame picture;
s3.3b, obtaining the resolution of the panoramic video single-frame picture in the panoramic display screen display area;
s3.4b, converting absolute coordinates of the panoramic picture in a display area after left-right rotation and up-down movement deviation according to the coordinates of the display picture;
s3.5b, when the panoramic video single-frame picture boundary is displayed during left and right rotation, copying 50% of the other side area of the panoramic video single-frame picture, and then splicing the area to the current panoramic video single-frame picture boundary to achieve the effect of 360-degree rotation;
and S3.6b, rendering the single-frame picture of the shifted panoramic video in a panoramic display area for display.
8. The gesture-operation-based panoramic courseware smooth rotation control system, which uses the gesture-operation-based panoramic courseware smooth rotation control method according to any one of claims 1 to 7, is characterized by comprising a panoramic display screen, a camera, a touch control panel and a background server.
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