CN111427448A - Portrait marking method and device and computer readable storage medium - Google Patents
Portrait marking method and device and computer readable storage medium Download PDFInfo
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- CN111427448A CN111427448A CN202010147629.4A CN202010147629A CN111427448A CN 111427448 A CN111427448 A CN 111427448A CN 202010147629 A CN202010147629 A CN 202010147629A CN 111427448 A CN111427448 A CN 111427448A
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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
- G06F3/011—Arrangements for interaction with the human body, e.g. for user immersion in virtual reality
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V10/00—Arrangements for image or video recognition or understanding
- G06V10/20—Image preprocessing
- G06V10/26—Segmentation of patterns in the image field; Cutting or merging of image elements to establish the pattern region, e.g. clustering-based techniques; Detection of occlusion
- G06V10/267—Segmentation of patterns in the image field; Cutting or merging of image elements to establish the pattern region, e.g. clustering-based techniques; Detection of occlusion by performing operations on regions, e.g. growing, shrinking or watersheds
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- G—PHYSICS
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- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/16—Human faces, e.g. facial parts, sketches or expressions
- G06V40/161—Detection; Localisation; Normalisation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The invention provides a portrait labeling method, a portrait labeling device and a computer-readable storage medium, wherein the portrait labeling method comprises the following steps: s1, acquiring the height and width of the display screen and the height and width of the interface, and calculating the ratio of the height and width of the interface; s2, dividing the display screen into N equal parts along the height direction and M equal parts along the width direction; s3, establishing a coordinate axis to obtain coordinate data; s4, respectively acquiring coordinate data of the interface; s5, calculating the height-width ratio of the unit display screen to the face in the interface; s6, calculating a linear regression equation of the unit display screen coordinate with respect to the interface coordinate; and S7, calculating coordinates of the human face on the display screen according to the linear regression equation and the interface coordinates, and performing human face picture frame on the display screen. The image annotation method, device and computer readable storage medium can reduce visual double images and avoid the dizzy feeling of users.
Description
Technical Field
The present invention relates to the field of technologies, and in particular, to a portrait labeling method and apparatus, and a computer-readable storage medium.
Background
Augmented Reality (AR) and Virtual Reality (VR) are the fields of technology that have attracted much attention in recent years, and their near-to-eye display systems project a far-away virtual image onto the human eye by forming pixels on a display through a series of optical imaging elements. The difference is that AR glasses require perspective (see-through) to see both the real outside world and virtual information, so the imaging system cannot be in front of the line of sight. This requires the addition of one or a group of optical combiners (optical combiners) to integrate, complement and "enhance" virtual information and real scenes in a "stacked" fashion.
The optical display system of an AR device is usually composed of a miniature display screen and optical elements. In summary, the display systems adopted by the AR glasses on the market at present are combinations of various miniature display screens and optical elements such as prisms, free-form surfaces, BirdBath, optical waveguides and the like, wherein the difference of the optical combiners is a key part for distinguishing the AR display systems.
At present, the AR glasses label the portrait in preview, and the effect realized by the scheme can cause visual double images and make users feel dizzy.
Disclosure of Invention
In view of the above, the technical problem to be solved by the present invention is to provide a portrait labeling method, apparatus and computer readable storage medium, which can reduce visual double images and avoid the dizzy feeling of the user.
The technical scheme of the invention is realized as follows:
a portrait labeling method comprises the following steps:
s1, acquiring height lHeight and width lWidth of a display screen, height pHeight and width pWidth of an interface, calculating the ratio hRatio of the height of the interface to the height of the display screen as lHeight/pHeight, and calculating the ratio wRatio of the width of the interface to the width of the display screen as lWidth/pWidth;
s2, dividing the display screen into N equal parts along the height direction, and dividing the display screen into M equal parts along the width direction to obtain N × M unit display screens;
s3, establishing coordinate axes, and acquiring coordinate data of the N × M unit display screens;
s4, aligning at least two unit display screens in the N x M unit display screens to the live-action human face, and respectively acquiring coordinate data of an interface;
s5, calculating the average height and width of the face in the interface according to the coordinate data of the interface; calculating the face height ratio xRatio and the face width ratio yRatio in the unit display screen and the interface;
s6, calculating a linear regression equation of the coordinates of the unit display screen relative to the coordinates of the interface according to the coordinate data of the interface, the coordinate data of the unit display screen, the high ratio hRatio and the width ratio wRatio of the interface and the display screen, and the high ratio xRatio and the width ratio yRatio of the face in the unit display screen and the interface;
and S7, calculating coordinates of the human face on the display screen according to the linear regression equation and the interface coordinates, and performing human face picture frame on the display screen.
Preferably, the N × M unit display screens are marked as:
the S3 specifically includes:
the left vertex of the first unit rectangle at the upper left corner is (0, 0), the height of the display screen is an x-axis positive axis, the width of the display screen is a y-axis positive axis, a coordinate system is constructed, and the height (lHeight/n) and the width (lWidth) of each unit rectangle are obtained, wherein A ismnThe coordinates corresponding to the upper left point are
AmnThe coordinates corresponding to the lower right point are
Preferably, the S4 specifically includes:
a is to bemnAligning each rectangular frame to the live-action face, and respectively counting the face coordinate data to obtain
PmnThe coordinates corresponding to the upper left point are:
Pmnthe coordinates corresponding to the lower right point are:
preferably, the S5 specifically includes:
high average value of interface face
Interface face width average
High ratio of unit display screen height to interface face height
Unit display screen width and interface face width ratio
Preferably, the S6 specifically includes:
x coordinate of upper left point of interface
(wherein
) Corresponding to the x coordinate of the upper left point of the unit display screen
According to the sample values, solving a linear regression equation of the x coordinate of the upper left point of the unit display screen relative to the x coordinate of the upper left point of preview
Is recorded as y ═ a + bx;
y coordinate of upper left point of interface
(wherein
) Corresponding to the y coordinate of the upper left point of the unit display screen
Preferably, the S7 specifically includes:
setting the coordinate value of the upper left point of the face obtained by the interface as (x) for the real scene picture frame on the display screen according to the obtained coordinate value of the interface0，y0) The coordinate value of the lower right point is (x)1，y1) Then it is set to the upper left point (coordinates of (a + b ＊) (hRatio ＊ x) for the real scene0)，c+d＊(wRatio＊y0) )) is a starting point and is (x) high1-x0) ＊ xRatio with a width of (y)1-y0) ＊ YRatio takes a human face picture frame on the display screen.
The invention also provides a portrait labeling device, which comprises:
the acquisition module is used for acquiring the height lHeight and the width lWidth of the display screen, the height pHeight and the width pWidth of the interface, calculating the ratio hRatio of the height of the interface and the height of the display screen as lHeight/pHeight, and calculating the ratio wRatio of the width of the interface and the width of the display screen as lWidth/pWidth;
the dividing module is used for dividing the display screen into N equal parts along the height direction and M equal parts along the width direction to obtain N × M unit display screens;
the axis building module is used for building coordinate axes and obtaining coordinate data of the N x M unit display screens;
the coordinate acquisition module is used for aligning at least two unit display screens in the N x M unit display screens to the live-action human face and respectively acquiring coordinate data of an interface;
the first calculation module is used for calculating the average height value and the average width value of the face in the interface according to the coordinate data of the interface; calculating the face height ratio xRatio and the face width ratio yRatio in the unit display screen and the interface;
the second calculation module is used for calculating a linear regression equation of the coordinates of the unit display screen relative to the coordinates of the interface according to the coordinate data of the interface, the coordinate data of the unit display screen, the high ratio hRatio and the wide ratio wRatio of the interface and the display screen, and the high ratio xRatio and the wide ratio yRatio of the face in the unit display screen and the interface;
and the picture frame module is used for calculating the coordinates of the human face on the display screen according to the linear regression equation and the interface coordinates and performing human face picture frame on the display screen.
The invention also proposes a computer-readable storage medium storing a plurality of instructions adapted to be loaded by a processor for performing the steps of the portrait annotation method according to any one of claims 1 to 6.
The invention provides a portrait labeling method, a portrait labeling device and a computer-readable storage medium, wherein at least two unit display screens in a plurality of unit display screens are aligned to a live-action face, and coordinate data of an interface are respectively obtained; calculating a linear regression equation of the unit display screen coordinate relative to the interface coordinate; therefore, the coordinates of the human face on the display screen can be calculated according to the linear regression equation and the interface coordinates, human face picture frames are performed on the display screen, visual double images are reduced, and a user is prevented from being dizzy.
Drawings
Fig. 1 is a display screen image in a portrait labeling method according to an embodiment of the present invention;
FIG. 2 is a diagram illustrating a segmented image of a display screen in a portrait annotation method according to an embodiment of the present invention
FIG. 3 is a flowchart of a portrait annotation method according to an embodiment of the present invention;
fig. 4 is a block diagram of a portrait labeling apparatus according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 3, an embodiment of the present invention provides a portrait labeling method, including the following steps:
s101, enabling the interface (preview) to be transparent through the app, and displaying the default horizontal screen as shown in the figure 1.
S102, acquiring display screen height lHeight and width lWidth, proview height pHeight and width pWidth by a program, calculating a ratio hRatio of preview height to display screen height (lHeight/pHeight), and calculating the ratio wRatio of preview height to display screen width (lWidth/pWidth);
s103, as shown in figure 2, dividing the height of the display screen into n equal parts, dividing n-1 lines on the display screen according to equal ratio, dividing the width of the display screen into m equal parts, and dividing m-1 lines on the display screen according to equal ratio to obtain n-m unit rectangles, and marking the unit rectangles as n-m unit rectangles
S104, according to the height and the width of the display screen obtained in S102, a coordinate system is constructed by taking the left vertex of the first unit rectangle at the upper left as (0, 0), the height of the display screen as an x-axis and the width of the display screen as a y-axis, and the height lHeight/n and the width lWidth/m of each unit rectangle are obtained, wherein A ismnThe coordinates corresponding to the upper left point are
AmnThe coordinates corresponding to the lower right point are
S105, adding AmnAligning each rectangular frame to the live-action face to ensure that the live-action face is framed by the rectangular frame, and respectively counting the coordinate data (the coordinates of the upper left point and the lower right point) of the preview face at the moment to obtain
PmnThe coordinates corresponding to the upper left point are:
Pmnthe coordinates corresponding to the lower right point are:
s106, obtaining the preview human face high average value according to the coordinate data obtained in the S105
preview face wide average
Unit display screen height to preview face height ratio
Unit display screen widthAspect ratio to preview
S107, obtaining the x coordinate of the upper left point of preview according to the coordinate data obtained in the S105
(wherein
) Corresponding to the x coordinate of the upper left point of the unit display screen
According to the sample values, solving a linear regression equation of the x coordinate of the upper left point of the unit display screen relative to the x coordinate of the upper left point of preview
Is recorded as y ═ a + bx;
s108, obtaining y coordinates of the upper left point of preview according to the coordinate data obtained in the S105
(wherein
) Corresponding to the y coordinate of the upper left point of the unit display screen
According to the sample values, solving a linear regression equation of the y coordinate of the upper left point of the unit display screen relative to the y coordinate of the upper left point of the preview
C + dx;
s109, according to the obtained corresponding coordinate relation, the real scene picture frame can be displayed on the display screen according to the acquired preview coordinate value, and the coordinate value of the upper left point of the face acquired by the preview is assumed to be (x)0，y0) The coordinate value of the lower right point is (x)1，y1) Then, thenIt takes the upper left point (coordinates of (a + b) x for the real scene0)，c+d*(wRatio*y0) )) is a starting point and is (x) high1-x0) xRatio of width (y)1-y0) yRatio is a human face picture frame.
As shown in fig. 4, the present invention further provides a portrait labeling apparatus, including:
an obtaining module 10, configured to obtain a display height lhight and a width lWidth, an interface height pHeight and a width pWidth, calculate an interface height to display height ratio hRatio ═ lhight/pHeight, and calculate an interface and display width ratio wRatio ═ lWidth/pWidth;
a dividing module 20, configured to divide the display screen into N equal parts along a height direction and into M equal parts along a width direction, so as to obtain N × M unit display screens;
the axis building module 30 is used for building coordinate axes and obtaining coordinate data of the N × M unit display screens;
the coordinate acquisition module 40 is configured to align at least two unit display screens of the N × M unit display screens with a live-action face, and respectively acquire coordinate data of an interface;
the first calculation module 50 is used for calculating the average height value and the average width value of the face in the interface according to the coordinate data of the interface; calculating the face height ratio xRatio and the face width ratio yRatio in the unit display screen and the interface;
a second calculating module 60, configured to calculate a linear regression equation of the coordinates of the unit display screen with respect to the interface coordinates according to the coordinate data of the interface, the coordinate data of the unit display screen, the high ratio hRatio and the wide ratio wRatio of the interface and the display screen, and the high ratio xRatio and the wide ratio wRatio of the face in the unit display screen and the interface;
and the frame module 70 is configured to calculate coordinates of the human face on the display screen according to the linear regression equation and the interface coordinates, and perform human face frame on the display screen.
The invention also proposes a computer-readable storage medium storing a plurality of instructions adapted to be loaded by a processor for performing the steps of the portrait annotation method according to any one of claims 1 to 6.
Through the above description of the embodiments, those skilled in the art will clearly understand that the present application can be implemented by software plus necessary general-purpose hardware, and certainly can also be implemented by special-purpose hardware including special-purpose integrated circuits, special-purpose CPUs, special-purpose memories, special-purpose components and the like. Generally, functions performed by computer programs can be easily implemented by corresponding hardware, and specific hardware structures for implementing the same functions may be various, such as analog circuits, digital circuits, or dedicated circuits. However, for the present application, the implementation of a software program is more preferable. Based on such understanding, the technical solutions of the present application may be substantially embodied in the form of a software product, which is stored in a readable storage medium, such as a floppy disk, a usb disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk of a computer, and includes several instructions for enabling a computer device (which may be a personal computer, a server, or a network device) to execute the method of the embodiments of the present application.
The computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, e.g., from one website site, computer, server, or data center via a wired (e.g., coaxial cable, fiber optic, digital subscriber line (DS L)) or wireless (e.g., infrared, wireless, microwave, etc.) manner, the computer-readable storage medium may be any available medium that can be stored by a computer or an integrated (e.g., solid state, optical, storage, such as a solid state, magnetic, optical, or optical storage medium, such as a solid state, magnetic, optical, or semiconductor storage medium, such as a solid state, optical, or semiconductor storage medium, such as a floppy disk, a solid state, optical, or optical disk, a solid state, or optical storage medium, such as a floppy disk, a solid state, or optical disk, a solid state, or semiconductor storage medium, such as a magnetic, a floppy disk, a magnetic, or optical disk, or a solid state storage medium, such as a DVD, a magnetic or optical disk, or a magnetic or optical disk.
Finally, it is to be noted that: the above description is only a preferred embodiment of the present invention, and is only used to illustrate the technical solutions of the present invention, and not to limit the protection scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.
Claims (8)
1. A portrait labeling method is characterized by comprising the following steps:
s1, acquiring height lHeight and width lWidth of a display screen, height pHeight and width pWidth of an interface, calculating the ratio hRatio of the height of the interface to the height of the display screen as lHeight/pHeight, and calculating the ratio wRatio of the width of the interface to the width of the display screen as lWidth/pWidth;
s2, dividing the display screen into N equal parts along the height direction, and dividing the display screen into M equal parts along the width direction to obtain N × M unit display screens;
s3, establishing coordinate axes, and acquiring coordinate data of the N × M unit display screens;
s4, aligning at least two unit display screens in the N x M unit display screens to the live-action human face, and respectively acquiring coordinate data of an interface;
s5, calculating the average height and width of the face in the interface according to the coordinate data of the interface; calculating the face height ratio xRatio and the face width ratio yRatio in the unit display screen and the interface;
s6, calculating a linear regression equation of the coordinates of the unit display screen relative to the coordinates of the interface according to the coordinate data of the interface, the coordinate data of the unit display screen, the high ratio hRatio and the width ratio wRatio of the interface and the display screen, and the high ratio xRatio and the width ratio yRatio of the face in the unit display screen and the interface;
and S7, calculating coordinates of the human face on the display screen according to the linear regression equation and the interface coordinates, and performing human face picture frame on the display screen.
2. The portrait labeling method of claim 1, wherein the N x M unit display screens are marked as:
the S3 specifically includes:
the left vertex of the first unit rectangle at the upper left corner is (0, 0), the height of the display screen is an x-axis positive axis, the width of the display screen is a y-axis positive axis, a coordinate system is constructed, and the height (lHeight/n) and the width (lWidth) of each unit rectangle are obtained, wherein A ismnThe coordinates corresponding to the upper left point are
AmnThe coordinates corresponding to the lower right point are
3. The portrait annotation method according to claim 2, wherein the S4 specifically includes:
a is to bemnAligning each rectangular frame to the live-action face, and respectively counting the face coordinate data to obtain
PmnThe coordinates corresponding to the upper left point are:
Pmnthe coordinates corresponding to the lower right point are:
4. the portrait labeling method of claim 3, wherein the S5 specifically includes:
high average value of interface face
Interface face width average
High ratio of unit display screen height to interface face height
Unit display screen width and interface face width ratio
5. The portrait annotation method of claim 4, wherein the S6 specifically includes: x coordinate of upper left point of interface
(wherein
) Corresponding to the x coordinate of the upper left point of the unit display screen
From the sample values, the units are foundLinear regression equation of x coordinate of upper left point of display screen relative to x coordinate of upper left point of preview
Is recorded as y ═ a + bx;
y coordinate of upper left point of interface
(wherein
) Corresponding to the y coordinate of the upper left point of the unit display screen
According to the sample values, solving a linear regression equation of the y coordinate of the upper left point of the unit display screen relative to the y coordinate of the upper left point of the preview
Denoted as y ═ c + dx.
6. The portrait labeling method of claim 5, wherein the S7 specifically includes:
setting the coordinate value of the upper left point of the face obtained by the interface as (x) for the real scene picture frame on the display screen according to the obtained coordinate value of the interface0，y0) The coordinate value of the lower right point is (x)1，y1) Then it is set to the upper left point (coordinates of (a + b ＊) (hRatio ＊ x) for the real scene0)，c+d＊(wRatio＊y0) )) is a starting point and is (x) high1-x0) ＊ xRatio with a width of (y)1-y0) ＊ YRatio takes a human face picture frame on the display screen.
7. A portrait annotation device, comprising:
the acquisition module is used for acquiring the height lHeight and the width lWidth of the display screen, the height pHeight and the width pWidth of the interface, calculating the ratio hRatio of the height of the interface and the height of the display screen as lHeight/pHeight, and calculating the ratio wRatio of the width of the interface and the width of the display screen as lWidth/pWidth;
the dividing module is used for dividing the display screen into N equal parts along the height direction and M equal parts along the width direction to obtain N × M unit display screens;
the axis building module is used for building coordinate axes and obtaining coordinate data of the N x M unit display screens;
the coordinate acquisition module is used for aligning at least two unit display screens in the N x M unit display screens to the live-action human face and respectively acquiring coordinate data of an interface;
the first calculation module is used for calculating the average height value and the average width value of the face in the interface according to the coordinate data of the interface; calculating the face height ratio xRatio and the face width ratio yRatio in the unit display screen and the interface;
the second calculation module is used for calculating a linear regression equation of the coordinates of the unit display screen relative to the coordinates of the interface according to the coordinate data of the interface, the coordinate data of the unit display screen, the high ratio hRatio and the wide ratio wRatio of the interface and the display screen, and the high ratio xRatio and the wide ratio yRatio of the face in the unit display screen and the interface;
and the picture frame module is used for calculating the coordinates of the human face on the display screen according to the linear regression equation and the interface coordinates and performing human face picture frame on the display screen.
8. A computer readable storage medium storing instructions adapted to be loaded by a processor to perform the steps of the portrait annotation method according to any one of claims 1-6.
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