CN111427448B - 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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- CN111427448B CN111427448B CN202010147629.4A CN202010147629A CN111427448B CN 111427448 B CN111427448 B CN 111427448B CN 202010147629 A CN202010147629 A CN 202010147629A CN 111427448 B CN111427448 B CN 111427448B
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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
- G06—COMPUTING; CALCULATING OR COUNTING
- 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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- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
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Abstract
The invention provides a portrait marking method, a portrait marking device and a computer readable storage medium, wherein the portrait marking method comprises the following steps: s1, acquiring the height and width of a display screen, calculating the ratio of the height of the interface to the height and width of the display screen; s2, dividing the display screen into N equal parts along the height direction and M equal parts along the width direction; s3, establishing coordinate axes to obtain coordinate data; s4, respectively acquiring coordinate data of an interface; s5, calculating the face height-width ratio of 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; and S7, calculating coordinates of the face on a display screen according to the linear regression equation and the interface coordinates, and carrying out face frame on the display screen. The image marking method, the image marking device and the computer readable storage medium can reduce visual double images and avoid dizzy feeling of a user.
Description
Technical Field
The present invention relates to the field of technologies, and in particular, to a method and apparatus for labeling a portrait, and a computer readable storage medium.
Background
Augmented Reality (AR) and Virtual Reality (VR) are fields of technology that have been attracting attention in recent years, and their near-eye display systems all form a far virtual image by a series of optical imaging elements from pixels on a display and project the far virtual image into the human eye. The difference is that AR glasses require perspective (see-through) to see both real world and virtual information, so the imaging system cannot be blocked in front of the line of sight. This requires the addition of one more or a set of optical combiners (opticalcombiners) to integrate virtual information and real scenes in a "stacked" fashion, complementary to each other, and "enhanced" to each other.
The optical display system of AR devices is typically composed of a micro display screen and optical elements. In summary, the display system adopted by the AR glasses in the market at present is a combination of various micro display screens and optical elements such as prisms, free-form surfaces, birdBath, optical waveguides, etc., wherein the difference of the optical combiners is a key part for distinguishing the AR display system.
At present, AR glasses are used for marking (drawing frames) human images in the preview, and the effect achieved by the scheme can lead to visual double images, so that users can feel dizziness.
Disclosure of Invention
In view of the above, the present invention provides a portrait marking method, a portrait marking device and a computer readable storage medium, which can reduce visual ghost and avoid dizzy feeling of a user.
The technical scheme of the invention is realized as follows:
a portrait marking method comprises the following steps:
s1, acquiring a high-height and a wide-width display screen, calculating the high-ratio hRatio=lhight/pHeight of the interface and the high-ratio of the display screen, and calculating the wide-ratio wratio=lwidth/pWidth of the interface and the display screen;
s2, dividing the display screen into N equal parts along the height direction and M equal parts along the width direction to obtain N x M unit display screens;
s3, establishing coordinate axes, and acquiring coordinate data of the N x M unit display screens;
s4, aligning at least two unit display screens in the N-M unit display screens to the live-action face, and respectively acquiring coordinate data of an interface;
s5, calculating a face high average value and a face wide average value in the interface according to the coordinate data of the interface; calculating the high ratio xRatio and the wide ratio yRatio of the human face in the unit display screen and the interface;
s6, calculating a linear regression equation of coordinates of the unit display screen relative to 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 S7, calculating coordinates of the face on a display screen according to the linear regression equation and the interface coordinates, and carrying out face frame on the display screen.
Preferably, the n×m unit display panels are:
the step S3 specifically comprises the following steps:
constructing a coordinate system by taking the left vertex of the first unit rectangle at the upper left corner as (0, 0), the height of the display screen as the positive axis of the x axis and the width of the display screen as the positive axis of the y axis to obtain the height (ulheight=lhight/n) and the width (ulwidth=lhidth/m, A) of each unit rectangle mn The coordinates corresponding to the upper left point areA mn The coordinates corresponding to the lower right point are +.>
Preferably, the S4 specifically includes:
will A mn Each rectangular frame of the three-dimensional image is aligned with a live-action face, and interface face coordinate data are counted respectively to obtainP mn The coordinates corresponding to the upper left point are: />P mn The coordinates corresponding to the lower right point are: />
Preferably, the step S5 specifically includes:
interface face high averageInterface face width averageUnit display screen height to interface face height ratio +.> Unit display screen width to interface face width ratio +.>
Preferably, the step S6 specifically includes:
upper left point x coordinate of interface(wherein-> ) X coordinate of upper left point of corresponding unit display screen> According to the sample value, 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 the preview>Let y=a+bx;
y coordinate of upper left point of interface(wherein-> ) Y coordinate of upper left point of corresponding unit display screen +.> According to the sample value, 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>Let y=c+dx.
Preferably, the step S7 specifically includes:
according to the obtained interface coordinate value, a live-action picture frame is displayed on a display screen, and the coordinate value of the upper left point of the face obtained by the interface is set as (x) 0 ，y 0 ) The lower right point coordinate value is (x 1 ，y 1 ) It is applied to the live-action with the upper left point (the coordinates are (a+b x) 0 )，c+d＊(wRatio＊y 0 ) A) is a starting point, a height of (x) 1 -x 0 ) X ratio of width (y) 1 -y 0 ) The face frame is carried out on the display screen by the aid of the XyRatio.
The invention also provides a portrait marking device, which comprises:
the acquisition module is used for acquiring the high-level height and the wide-width of the display screen, the high-pHeight and the wide-width of the interface, calculating the high-rate hRatio=lhight/pHeight of the interface and the high-rate hRatio=lhigh/pHeight of the display screen, and calculating the wide-rate wratio=lhidth/pWidth of the interface and the display screen;
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 x M unit display screens;
the axis building module is used for building coordinate axes and acquiring 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 face and respectively acquiring coordinate data of an interface;
the first calculation module is used for calculating a face high average value and a face wide average value in the interface according to the coordinate data of the interface; calculating the high ratio xRatio and the wide ratio yRatio of the human face in the unit display screen and the interface;
the second calculation module is used for calculating a linear regression equation of coordinates of the unit display screen relative to coordinates of the interface according to the coordinate data of the interface, the coordinate data of the unit display screen, the high proportion hRatio and the wide proportion wRatio of the interface and the display screen, and the high proportion xRatio and the wide proportion yRatio of the human 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 carrying out the 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 marking method according to any one of claims 1 to 6.
According to the portrait marking method, the portrait marking device and the computer readable storage medium, at least two unit display screens in the 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 coordinates of the unit display screen relative to the coordinates of the interface; therefore, the coordinates of the face on the display screen can be calculated according to the linear regression equation and the interface coordinates, and the face picture frame is carried out on the display screen, so that visual double images are reduced, and dizzy feeling of a user is avoided.
Drawings
FIG. 1 is a display screen image in a portrait marking method according to an embodiment of the present invention;
FIG. 2 is a segmented image of a display screen in a method for labeling a portrait according to an embodiment of the present invention
FIG. 3 is a flowchart of a method for labeling a portrait according to an embodiment of the present invention;
fig. 4 is a block diagram of a portrait marking device according to an embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 3, the embodiment of the invention provides a portrait marking method, which comprises the following steps:
s101, app makes the interface (preview) transparent, and the default landscape display is shown in fig. 1.
S102, a program obtains a high-height and a wide-width of a display screen, a high-pHeight and a wide-width of a preview, calculates the high-ratio hRatio=lhight/pHeight of the preview and the high-ratio hRatio=lhigh/pHeight of the display screen, and calculates the ratio wratio=lhidth/pWidth of the preview and the wide-ratio of the display screen;
s103, as shown in FIG. 2, dividing the display screen into n equal parts, dividing the display screen into m equal parts by dividing the display screen into n-1 lines in equal proportion, dividing the display screen into m equal parts by dividing the display screen into m-1 lines in equal proportion, obtaining n.m unit rectangles, and recording as
S104, according to the display screen height and the display screen width acquired in S102, taking the left vertex of the first unit rectangle on the left as (0, 0), the display screen height as the positive axis of the x axis, the display screen width as the positive axis of the y axis, constructing a coordinate system to obtain the height (ulHeight=lhight/n) and the width (ulWidth=lhidth/m, A of each unit rectangle mn The coordinates corresponding to the upper left point areA mn The coordinates corresponding to the lower right point are
S105, will A mn Each rectangular frame of the three-dimensional face is aligned with the real face, so that the real face is ensured to be coveredThe rectangular frame is used for framing, and the coordinate data (coordinates of the upper left point and the lower right point) of the preview face at the moment are respectively counted to obtainP mn The coordinates corresponding to the upper left point are: />P mn The coordinates corresponding to the lower right point are:
s106, obtaining the high average of the preview face according to the coordinate data obtained in S105Preview face width average +.>Unit display high to preview face high ratio +.> Ratio of unit display screen width to preview face width
S107, obtaining the x coordinate of the top left point of the preview according to the coordinate data obtained in S105(wherein) X coordinate of upper left point of corresponding unit display screenFrom the sample values, calculateLinear regression equation of the x coordinate of the upper left point of the unit display screen with respect to the x coordinate of the upper left point of the preview>Let y=a+bx;
s108, obtaining the y coordinate of the top left point of the preview according to the coordinate data acquired in S105(wherein) Y coordinate of upper left point of corresponding unit display screenAccording to the sample value, 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 y=c+dx;
s109, according to the obtained corresponding coordinate relationship, a live-action frame can be displayed on the display screen according to the obtained preview coordinate value, and the coordinate value of the upper left point of the face obtained by the preview is assumed to be (x) 0 ，y 0 ) The lower right point coordinate value is (x 1 ，y 1 ) It is shown as the upper left point (coordinates (a+b (hRatio x) 0 )，c+d*(wRatio*y 0 ) A) is a starting point, a height of (x) 1 -x 0 ) xRatio, width (y 1 -y 0 ) And (3) yRatio is a face frame.
As shown in fig. 4, the present invention further provides a portrait marking device, which includes:
an obtaining module 10, configured to obtain a high-lhight and a wide-width of the display screen, and a high-pHeight and a wide-width of the interface, calculate a high-ratio hRatio=lhight/pHeight of the interface, and calculate a wide-ratio wratio=lwidth/pWidth of the interface and the display screen;
the dividing module 20 is configured to divide the display screen into N equal parts along the height direction and M equal parts along the width direction, so as to obtain n×m unit display screens;
the axis building module 30 is used for building coordinate axes and acquiring coordinate data of the N x M unit display screens;
the coordinate acquiring module 40 is configured to align at least two unit display screens of the n×m unit display screens to a live-action face, and acquire coordinate data of an interface respectively;
a first calculating module 50, configured to calculate a face high average value and a face wide average value in the interface according to the coordinate data of the interface; calculating the high ratio xRatio and the wide ratio yRatio of the human face in the unit display screen and the interface;
the second calculation module 60 is configured to calculate a linear regression equation of coordinates of the unit display screen with respect to 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 frame module 70 is used for calculating the coordinates of the face on the display screen according to the linear regression equation and the interface coordinates and carrying out 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 marking method according to any one of claims 1 to 6.
From the above description of the embodiments, it will be apparent to those skilled in the art that the present application may be implemented by means of software plus necessary general purpose hardware, or of course may be implemented by dedicated hardware including application specific integrated circuits, dedicated CPUs, dedicated memories, dedicated 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 can be varied, such as analog circuits, digital circuits, or dedicated circuits. However, a software program implementation is a preferred embodiment in many cases for the present application. Based on such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art in the form of a software product 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, etc., including several instructions to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to perform the method of the embodiments of the present application.
In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions in accordance with embodiments of the present application are produced in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by a wired (e.g., coaxial cable, fiber optic, digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). Computer readable storage media can be any available media that can be stored by a computer or data storage devices such as servers, data centers, etc. that contain an integration of one or more available media. Usable media may be magnetic media (e.g., floppy disks, hard disks, magnetic tape), optical media (e.g., DVD), or semiconductor media (e.g., solid State Disk (SSD)), or the like.
Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention are included in the protection scope of the present invention.
Claims (8)
1. A portrait marking method is characterized by comprising the following steps:
s1, acquiring a high-height and a wide-width display screen, calculating the high-ratio hRatio=lhight/pHeight of the interface and the high-ratio of the display screen, and calculating the wide-ratio wratio=lwidth/pWidth of the interface and the display screen;
s2, dividing the display screen into n equal parts along the height direction and m equal parts along the width direction to obtain n x m unit display screens;
s3, establishing coordinate axes, and acquiring coordinate data of the n x m unit display screens;
s4, aligning at least two unit display screens in the n-m unit display screens with the live-action face, and respectively acquiring coordinate data of an interface;
s5, calculating a face high average value and a face wide average value in the interface according to the coordinate data of the interface; calculating the high ratio xRatio and the wide ratio yRatio of the human face in the unit display screen and the interface;
s6, calculating a linear regression equation of coordinates of the unit display screen relative to 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 S7, calculating coordinates of the face on a display screen according to the linear regression equation and the interface coordinates, and carrying out face frame on the display screen.
2. The portrait marking method according to claim 1 wherein the n x m unit displays are:
the step S3 specifically comprises the following steps:
the left vertex of the first unit rectangle at the upper left corner is (0, 0), and the display screen height is the x axisThe positive axis, the display screen width is the positive axis of the y axis, a coordinate system is constructed, and the high ul height=lhight/n and the wide ul width=lhidth/m, A of each unit rectangle are obtained mn The coordinates corresponding to the upper left point are
A mn The coordinates corresponding to the lower right point are
3. The portrait marking method according to claim 2, wherein the S4 specifically includes:
will A mn Each rectangular frame of the three-dimensional image is aligned with a live-action face, and interface face coordinate data are counted respectively to obtain
P mn The coordinates corresponding to the upper left point are: />P mn The coordinates corresponding to the lower right point are: />
4. The portrait marking method as claimed in claim 3, wherein said S5 specifically comprises: interface face high averageInterface face width average +.>Unit display screen height to interface face height ratio +.>Unit display screen width and interface face width ratio
5. The portrait marking method as claimed in claim 4, wherein said S6 specifically comprises: upper left point x coordinate of interface(wherein->) X coordinate of upper left point of corresponding unit display screenAccording to the sample value, 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 the preview is obtained and recorded as y=a+bx;
y coordinate of upper left point of interface(wherein->) Y coordinate of upper left point of corresponding unit display screen +.>And according to the sample value, 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 is obtained and is recorded as y=c+dx.
6. The portrait marking method as claimed in claim 5, wherein said S7 specifically comprises:
setting the coordinate value of the upper left point of the face acquired by the interface as (x 0, y 0) and the coordinate value of the lower right point as (x 1, y 1) according to the acquired interface coordinate value, and carrying out face picture frame on the display screen by taking the upper left point (coordinates of (a+b (hRatio x 0), c+d (wrRatio y 0)) as a starting point, wherein the upper left point is (x 1-x 0), the upper right point is (y 1-y 0), and the width is (y 1-y 0).
7. A portrait marking device, comprising:
the acquisition module is used for acquiring the high-level height and the wide-width of the display screen, the high-pHeight and the wide-width of the interface, calculating the high-rate hRatio=lhight/pHeight of the interface and the high-rate hRatio=lhigh/pHeight of the display screen, and calculating the wide-rate wratio=lhidth/pWidth of the interface and the display screen;
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 x m unit display screens;
the axis building module is used for building coordinate axes and acquiring coordinate data of the n-m unit display screens;
the coordinate acquisition module is used for aligning at least two unit display screens in the n-m unit display screens with the live-action face and respectively acquiring coordinate data of an interface;
the first calculation module is used for calculating a face high average value and a face wide average value in the interface according to the coordinate data of the interface; calculating the high ratio xRatio and the wide ratio yRatio of the human face in the unit display screen and the interface;
the second calculation module is used for calculating a linear regression equation of coordinates of the unit display screen relative to coordinates of the interface according to the coordinate data of the interface, the coordinate data of the unit display screen, the high proportion hRatio and the wide proportion wRatio of the interface and the display screen, and the high proportion xRatio and the wide proportion yRatio of the human 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 carrying out the human face picture frame on the display screen.
8. A computer readable storage medium having stored thereon a plurality of instructions adapted to be loaded by a processor to perform the steps of the portrait marking method according to any one of claims 1 to 6.
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