WO2018006566A1

WO2018006566A1 - View adjustment method and system

Info

Publication number: WO2018006566A1
Application number: PCT/CN2016/113106
Authority: WO
Inventors: 黄宝华; 梁泰琪
Original assignee: 广州视睿电子科技有限公司
Priority date: 2016-07-07
Filing date: 2016-12-29
Publication date: 2018-01-11
Also published as: CN106201201A; CN106201201B

Abstract

Disclosed are a view adjustment method and system. The view adjustment method comprises the following steps: during the process of a display device displaying a view, identifying a profile of a view element in the view (S10); acquiring the minimum circumscribed rectangle of the profile of the view element (S20); calculating an angle between the minimum circumscribed rectangle and a pre-set reference pattern on a display interface of the display device (S30); and adjusting, according to the angle, a display angle of the view on the display interface and adjusting the view to a target direction (S40). In the view adjustment method and system, by identifying a profile of a view element in a view during the process of a display device displaying the view, acquiring the minimum circumscribed rectangle of the profile, and then calculating an angle between the minimum circumscribed rectangle and a pre-set reference pattern, a display angle of the view on a display interface can be adjusted, so as to adjust the view to a target direction, so that a relatively high adjustment efficiency is achieved on the basis of ensuring the display effect of the view.

Description

View adjustment method and system

Technical field

The present invention relates to the field of multimedia display technologies, and in particular, to a view adjustment method and system.

Background technique

With the rapid development of multimedia technology, people are increasingly demanding the use of multimedia technology to obtain view data in their work and life. For example, in the classroom, the teacher often uses a scanner to scan the view data such as test papers or textbooks and then transfer them to the large-screen display device for display; during the conference, the speaker transmits the paper report through shooting, etc., and then transmits it to the real-time. The related display device is displayed so that the participant can view the corresponding report content.

In the process of displaying the view corresponding to various types of view data, in order to avoid the deviation of the display position of the related view in the display interface (such as inversion, left tilt, or right tilt), it is usually necessary to adjust the view data when the image capture device scans or takes a picture. Position the position, or adjust the position of the view data in real time according to the display deviation during the view display.

Although the above technical solution can ensure the display effect of the corresponding view to some extent, the adjustment operation of the view data is complicated, and the adjustment efficiency is easy to be low.

Summary of the invention

Based on this, it is necessary to provide a view adjustment method and system for the technical problem that the conventional scheme is easy to cause low adjustment efficiency.

A view adjustment method includes the following steps:

Identifying the outline of the view elements in the view during the display of the display view of the device;

Obtaining a minimum circumscribed rectangle of the outline of the view element;

Calculating an angle between the minimum circumscribed rectangle and a preset reference graphic on a display interface of the display device;

Adjusting the display angle of the view on the display interface according to the angle, and adjusting the view to the target direction.

A view adjustment system comprising:

An identification module, configured to identify an outline of a view element in the view during display of the display device;

An obtaining module, configured to obtain a minimum circumscribed rectangle of the outline of the view element;

a calculation module, configured to calculate an angle between the minimum circumscribed rectangle and a preset reference graphic on a display interface of the display device;

The adjustment module is configured to adjust a display angle of the view on the display interface according to the angle, and adjust the view to the target direction.

The above view adjustment method and system can identify the outline of the view element in the view during the display view of the display device, obtain the minimum circumscribed rectangle of the outline, and calculate the angle between the minimum circumscribed rectangle and the preset reference figure. Adjust the display angle of the view on the display interface to adjust the above view to the target direction. On the basis of ensuring the view display effect, it has high adjustment efficiency.

DRAWINGS

1 is a flow chart of a view adjustment method of an embodiment;

Figure 2 is a schematic view of a view of an embodiment;

FIG. 3 is a schematic structural diagram of a view adjustment system of an embodiment.

detailed description

The specific embodiments of the view adjustment method and system of the present invention will be described in detail below with reference to the accompanying drawings.

Referring to FIG. 1, FIG. 1 is a flowchart showing a touch time acquisition method according to an embodiment, which includes the following steps:

S10, in the process of displaying the display view of the display device, identifying an outline of the view element in the view;

The above view elements include one or more of text, graphics, and tables. The above steps may identify the contour of the view element in the view according to the gray information of each pixel of the view. For example, the gray difference of any two adjacent pixels may be acquired, and each pair whose gray difference is greater than the preset gray difference is identified. The pixel points are determined according to the pixel points at the outermost periphery of the corresponding view element for each pair of grayscale differences greater than the preset grayscale difference. The preset gray level difference may be set according to the background gray value of the corresponding view and the gray value of the view element; if the view element corresponds to multiple gray values, the preset gray level difference may also correspond to multiple grays according to the view element. The degree value is set accordingly.

The above view may include one or more view elements, and may perform contour recognition on each view element in the view to generate a minimum outer rectangle corresponding to each view element; if the number of view elements in the view is large, one part of the view may be The element performs contour recognition and the generation of the corresponding minimum circumscribed rectangle; the above-mentioned view element for contour recognition may be set according to the total number of view elements, such as setting from 50% of the total to any value between the totals, and the like.

S20. Obtain a minimum circumscribed rectangle of the outline of the view element.

The above view elements may be as shown in the figure 101 and the text 103 in FIG. 2, and the minimum circumscribed rectangle of the outline of the view element may be as shown by the rectangles 102 and 104 in FIG. 2, as shown in FIG. 2, the element direction of the view element ( The graphic direction or text direction is parallel or perpendicular to either side of the corresponding minimum circumscribed rectangle.

S30. Calculate an angle between the minimum circumscribed rectangle and a preset reference graphic on a display interface of the display device.

The reference graphic may be set according to the geometric shape corresponding to each boundary of the display interface, and may also be set according to a direction suitable for the user preview, such as a line or a rectangle perpendicular to the horizontal plane, etc.; if the geometrical shape corresponding to each boundary of the display interface is displayed If it is a rectangle, the above reference pattern may also be set as a rectangle parallel or coincident with the rectangle corresponding to the display interface.

The calculation process of the above angles may include:

In the minimum circumscribed rectangle (if there are multiple minimum circumscribed rectangles, you can select one of the smallest circumscribed rectangles) as the adjustment line;

If the reference pattern includes a plurality of straight lines or straight line segments, an edge is selected from the side of the straight line or the straight line segment as a reference line;

Calculating an angle between the adjustment line and the reference line, determining an angle between the minimum circumscribed rectangle and the reference figure according to the above angle; or respectively setting the direction of the adjustment line and the reference line, and calculating the adjustment line and the reference after setting the direction The angle formed by the line to determine between the minimum circumscribing rectangle and the reference graphic Angle.

S40: Adjust a display angle of the view on the display interface according to the angle, and adjust the view to the target direction.

In the above steps, the process of adjusting the display angle of the view on the display interface according to the angle may include: rotating the view (w+k*90°); wherein the w is the angle between the minimum circumscribed rectangle and the reference graphic, k is 0, 1, 2, or 3, and conforming to "*" means multiplication. The adjusted view can be displayed in the target direction of the display interface. At this time, the direction of the view is consistent with the display direction of the display interface, that is, the display direction or position of the above view in the display interface does not have an inverted, left tilt or right tilt, etc., which affects the user preview effect. Deviation. The above target direction is the direction in which the user obtains the best effect when previewing, that is, the direction of the display direction deviation does not appear in each view element in the view.

The view adjusting method provided by the embodiment may identify the contour of the view element in the view during the display of the display device, obtain the minimum circumscribed rectangle of the contour, and calculate the angle between the minimum circumscribed rectangle and the preset reference graphic. In this way, the display angle of the view on the display interface is adjusted to adjust the view to the target direction, and the adjustment efficiency is improved on the basis of ensuring the view display effect.

In one embodiment, the step of calculating an angle between the minimum circumscribed rectangle and a preset reference pattern on a display interface of the display device may include:

Selecting one side of the minimum circumscribed rectangle as an adjustment line, and setting a direction of the adjustment line according to a view element corresponding to the minimum circumscribed rectangle;

Selecting one side of the reference graphic preset on the display interface of the display device as a reference line, and setting a direction of the reference line according to a relative position of the reference graphic and the display interface;

Obtaining an angle formed by the adjustment line and the reference line to obtain an angle between the minimum circumscribed rectangle and the reference figure.

The direction of the adjustment line may be set to the direction from the top to the bottom of the view element, and the direction of the reference line may be set to display the direction from the top end to the bottom end of the interface end, and the display angle of the rotation view on the display interface, when adjusting the direction of the line and the reference line When the directions are exactly the same, the view is adjusted to the target direction.

In this embodiment, an adjustment line is selected in the minimum circumscribed rectangle, and a reference line is selected in the reference pattern. The accuracy of the determined angle can be ensured by determining the angle between the minimum circumscribed rectangle and the reference pattern according to the angle formed by the adjustment line and the reference line.

In one embodiment, an outline of a plurality of view elements in the view can be identified;

The step of acquiring the minimum circumscribed rectangle of the outline of the view element may further include:

Obtaining n minimum circumscribed rectangles parallel to each other; wherein n is a positive integer greater than or equal to 2;

When the ratio of the n in the total number of minimum circumscribed rectangles exceeds the set ratio, the smallest circumscribed rectangle other than the n minimum circumscribed rectangles is deleted.

Normally, the direction of each view element in the view is the same, so the minimum circumscribed rectangles corresponding to the multiple view elements are parallel to each other. If there is a minimum circumscribed rectangle that is not parallel to the other minimum circumscribing rectangles, it indicates that the direction of the view element corresponding to the minimum circumscribed rectangle is special and cannot represent the direction of the corresponding view; or the minimum circumscribed rectangle has errors during the generation process, in order to improve To calculate the accuracy of the minimum circumscribed rectangle of the angle, the minimum circumscribed rectangle with the error needs to be deleted.

The above setting ratio can be set according to the number of view elements, for example, set to 90% or 91%.

In this embodiment, the error or the non-representative minimum circumscribed rectangle is deleted, and the accuracy of the minimum circumscribed rectangle for calculating the angle can be improved, thereby improving the accuracy of the corresponding view adjustment.

In an embodiment, the step of adjusting the display angle of the view on the display interface according to the angle, and adjusting the view to the target direction may include:

Rotating the display angle of the view on the display interface according to the angle;

Upon detecting that the direction of the view does not coincide with the target direction, the view is rotated 90 degrees until the view is adjusted to the target direction.

In this embodiment, the direction of the view may be set to the direction of any one of the view elements in the view from the top to the bottom, and the target direction may be set to the display interface or the direction from the top to the bottom, and the directions are the same (adjust the view to the target) After the direction), the display elements in the view will not show deviations such as inversion, left tilt or right tilt.

In an embodiment, before the display device displays the view, the method further includes:

Capturing a view corresponding to the view material by using an image capture device;

The step of identifying the outline of the view element in the view may further include:

Detecting the view boundaries of the view and obtaining the boundary ratio between the boundaries of the views;

Determining whether the boundary ratio is consistent with a preset boundary ratio;

If not, the capture position of the image capture device is adjusted until the boundary ratio matches the preset boundary ratio.

In this embodiment, due to the deviation of the position of the view data or the placement position of the image capturing device such as the camera, the view data may be incompletely obtained, and the corresponding view may be incomplete. If the view is not consistent with the corresponding boundary in the view data, the view is incomplete and needs to be The image capture device moves to the destination capture location to obtain a complete view of the view material. The preset boundary ratio can be set according to the original boundary length of the view data. The above-mentioned purpose capture location includes a location at which the image capture device can capture a complete view of the view material, which can identify the location of the view material and determine the destination capture location based on the identified placement location.

In one embodiment, the view elements described above may include text or graphics displayed by the display interface.

In one embodiment, the display interface may be a rectangle, and the reference pattern is a line parallel to one side of the display interface.

In this embodiment, a straight line parallel to an edge of the rectangular display interface is set as a reference graphic, and the reference graphic can be simplified to improve the efficiency of obtaining a corresponding angle according to the reference graphic, thereby improving the adjustment efficiency of the view.

Referring to FIG. 3, FIG. 3 is a schematic structural diagram of a view adjustment system of an embodiment, including:

The identification module 10 is configured to identify an outline of the view element in the view during the display of the display device by the display device;

The above view elements include one or more of text, graphics, and tables. In the above identification module 10, the contour of the view element in the view may be identified according to the gray information of each pixel of the view. For example, the gray level difference of any two adjacent pixels may be acquired, and the gray level difference is greater than the preset gray level. Poor pairs of pixels, according to each pair of grayscale differences at the outermost periphery of the corresponding view element is greater than the preset grayscale The poor pixels determine the outline of the above view elements. The preset gray level difference may be set according to the background gray value of the corresponding view and the gray value of the view element; if the view element corresponds to multiple gray values, the preset gray level difference may also correspond to multiple grays according to the view element. The degree value is set accordingly.

An obtaining module 20, configured to acquire a minimum circumscribed rectangle of an outline of the view element;

The calculating module 30 is configured to calculate an angle between the minimum circumscribed rectangle and a preset reference graphic on a display interface of the display device;

The adjustment module 40 is configured to adjust the display angle of the view on the display interface according to the angle, and adjust the view to the target direction.

In the above adjustment module 40, the process of adjusting the display angle of the view on the display interface according to the angle may include: rotating the view (w+k*90°); wherein the w is between the minimum circumscribed rectangle and the reference graphic Angle, k is 0, 1, 2 or 3, which corresponds to "*" means multiplication. The adjusted view can be displayed in the target direction of the display interface. At this time, the direction of the view is consistent with the display direction of the display interface, that is, the display direction or position of the above view in the display interface does not have an inverted, left tilt or right tilt, etc., which affects the user preview effect. Deviation. The above target direction is the direction in which the user obtains the best effect when previewing, that is, the direction of the display direction deviation does not appear in each view element in the view.

The view adjustment system provided by the present invention can identify the outline of the view element in the view during the display view of the display device, obtain the minimum circumscribed rectangle of the outline, and calculate the angle between the minimum circumscribed rectangle and the preset reference figure, This adjusts the display angle of the view on the display interface to adjust the view to the target direction, and has higher adjustment efficiency on the basis of ensuring the view display effect.

In an embodiment, the calculating module may include:

a first selection module, configured to select one side of the minimum circumscribed rectangle as an adjustment line, and set a direction of the adjustment line according to the view element corresponding to the minimum circumscribed rectangle;

a second selection module, configured to select one side as a reference line in a reference pattern preset on a display interface of the display device, and set a direction of the reference line according to a relative position of the reference graphic and the display interface;

An angle obtaining module is configured to obtain an angle formed by the adjusting line and the reference line to obtain an angle between the minimum circumscribed rectangle and the reference figure.

In this embodiment, the adjustment line is selected in the minimum circumscribed rectangle, the reference line is selected in the reference pattern, and the angle between the minimum circumscribed rectangle and the reference pattern is determined according to the angle formed by the adjustment line and the reference line, so that the determined angle can be ensured. The accuracy.

In an embodiment, the adjusting module may include:

a rotation module, configured to rotate a display angle of the view on the display interface according to the angle;

And a detecting module, configured to rotate the view by 90 degrees when the direction of the view is detected to be inconsistent with the target direction, until the view adjusts the view to the target direction.

The view adjustment system provided by the present invention corresponds to the view adjustment method provided by the present invention. The technical features and advantages of the embodiment of the view adjustment method are applicable to the embodiment of the view adjustment system, and are hereby declared.

The technical features of the above-described embodiments may be arbitrarily combined. For the sake of brevity of description, all possible combinations of the technical features in the above embodiments are not described. However, as long as there is no contradiction between the combinations of these technical features, All should be considered as the scope of this manual.

The above-described embodiments are merely illustrative of several embodiments of the present invention, and the description thereof is more specific and detailed, but is not to be construed as limiting the scope of the invention. It should be noted that for this A person skilled in the art can make several modifications and improvements without departing from the spirit and scope of the invention. Therefore, the scope of the invention should be determined by the appended claims.

Claims

A view adjustment method, comprising the steps of:

Identifying the outline of the view elements in the view during the display of the display view of the device;

Obtaining a minimum circumscribed rectangle of the outline of the view element;

Calculating an angle between the minimum circumscribed rectangle and a preset reference graphic on a display interface of the display device;

Adjusting the display angle of the view on the display interface according to the angle, and adjusting the view to the target direction.
The view adjusting method according to claim 1, wherein the calculating the angle between the minimum circumscribed rectangle and a preset reference pattern on a display interface of the display device comprises:

Selecting one side of the minimum circumscribed rectangle as an adjustment line, and setting a direction of the adjustment line according to a view element corresponding to the minimum circumscribed rectangle;

Selecting one side of the reference graphic preset on the display interface of the display device as a reference line, and setting a direction of the reference line according to a relative position of the reference graphic and the display interface;

Obtaining an angle formed by the adjustment line and the reference line to obtain an angle between the minimum circumscribed rectangle and the reference figure.
The view adjusting method according to claim 1, wherein an outline of a plurality of view elements in the view is identified;

The step of acquiring the minimum circumscribed rectangle of the outline of the view element further includes:

Obtaining n minimum circumscribed rectangles parallel to each other; wherein n is a positive integer greater than or equal to 2;

When the ratio of the n in the total number of minimum circumscribed rectangles exceeds the set ratio, the smallest circumscribed rectangle other than the n minimum circumscribed rectangles is deleted.
The view adjusting method according to claim 1, wherein the step of adjusting the display angle of the view on the display interface according to the angle, and adjusting the view to the target direction comprises:

Rotating the display angle of the view on the display interface according to the angle;

Rotating the view 90 degrees when it is detected that the direction of the view does not coincide with the target direction, Until the view is adjusted to the target direction.
The view adjusting method according to any one of claims 1 to 4, further comprising: before the display device displays the view, further comprising:

Capturing a view corresponding to the view material by using an image capture device;

The step of identifying the outline of the view element in the view further includes:

Detecting the view boundaries of the view and obtaining the boundary ratio between the boundaries of the views;

Determining whether the boundary ratio is consistent with a preset boundary ratio;

If not, the capture position of the image capture device is adjusted until the boundary ratio matches the preset boundary ratio.
The view adjusting method according to any one of claims 1 to 4, wherein the view element comprises a text or a graphic displayed on the display interface.
The view adjusting method according to any one of claims 1 to 4, wherein the display interface is a rectangle, and the reference pattern is a line parallel to one side of the display interface.
A view adjustment system, comprising:

An identification module, configured to identify an outline of a view element in the view during display of the display device;

An obtaining module, configured to obtain a minimum circumscribed rectangle of the outline of the view element;

a calculation module, configured to calculate an angle between the minimum circumscribed rectangle and a preset reference graphic on a display interface of the display device;

The adjustment module is configured to adjust a display angle of the view on the display interface according to the angle, and adjust the view to the target direction.
The view adjustment system according to claim 8, wherein the calculation module comprises:

a first selection module, configured to select one side of the minimum circumscribed rectangle as an adjustment line, and set a direction of the adjustment line according to the view element corresponding to the minimum circumscribed rectangle;

a second selection module, configured to select one side as a reference line in a reference pattern preset on a display interface of the display device, and set a direction of the reference line according to a relative position of the reference graphic and the display interface;

An angle obtaining module is configured to obtain an angle formed by the adjusting line and the reference line to obtain an angle between the minimum circumscribed rectangle and the reference figure.
The view adjustment system according to claim 8, wherein the adjustment module comprises:

a rotation module, configured to rotate a display angle of the view on the display interface according to the angle;

And a detecting module, configured to rotate the view by 90 degrees when the direction of the view is detected to be inconsistent with the target direction, until the view adjusts the view to the target direction.