CN111182280A - Projection method, projection device, sound box equipment and storage medium - Google Patents

Projection method, projection device, sound box equipment and storage medium Download PDF

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Publication number
CN111182280A
CN111182280A CN201910898505.7A CN201910898505A CN111182280A CN 111182280 A CN111182280 A CN 111182280A CN 201910898505 A CN201910898505 A CN 201910898505A CN 111182280 A CN111182280 A CN 111182280A
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China
Prior art keywords
image
projection
video
projected
acquiring
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CN201910898505.7A
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Chinese (zh)
Inventor
张卓
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TCL China Star Optoelectronics Technology Co Ltd
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Shenzhen China Star Optoelectronics Technology Co Ltd
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Priority to CN201910898505.7A priority Critical patent/CN111182280A/en
Publication of CN111182280A publication Critical patent/CN111182280A/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • H04N9/3179—Video signal processing therefor
    • H04N9/3185—Geometric adjustment, e.g. keystone or convergence
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/4104—Peripherals receiving signals from specially adapted client devices
    • H04N21/4122—Peripherals receiving signals from specially adapted client devices additional display device, e.g. video projector
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/441—Acquiring end-user identification, e.g. using personal code sent by the remote control or by inserting a card
    • H04N21/4415—Acquiring end-user identification, e.g. using personal code sent by the remote control or by inserting a card using biometric characteristics of the user, e.g. by voice recognition or fingerprint scanning
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/47—End-user applications
    • H04N21/472—End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/47—End-user applications
    • H04N21/488—Data services, e.g. news ticker
    • H04N21/4882—Data services, e.g. news ticker for displaying messages, e.g. warnings, reminders
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • H04N9/3141—Constructional details thereof
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • H04N9/3141—Constructional details thereof
    • H04N9/317—Convergence or focusing systems

Abstract

The embodiment of the invention discloses a projection method, a projection device, sound box equipment and a storage medium. The method comprises the following steps: under the condition that a projection instruction is detected, projecting a currently played image onto a projection wall surface through a projection module, and acquiring a projection image on the projection wall surface; acquiring the image integrity of the projected image by performing image matching on the projected image and the currently played image; obtaining an axis included angle between a preset axis and a specified axis in a projected image; acquiring image correction parameters according to the image integrity and the axis included angle; and projecting the video to be projected by utilizing the image correction parameters. Therefore, the embodiment of the invention can project on the projection wall surface, avoids the loss of the display screen of the terminal device to the eyesight of people in the prior art, improves the projection convenience, and can automatically carry out projection correction by intelligently acquiring the image correction parameters, thereby reducing manual operation and further improving the intelligence of screen projection.

Description

Projection method, projection device, sound box equipment and storage medium
Technical Field
The present invention relates to the field of multimedia control technologies, and in particular, to a projection method, a projection apparatus, a speaker device, and a storage medium.
Background
At present, children can learn through teaching videos, most carrier devices of the teaching videos are terminal devices, and it is considered that display screens of the terminal devices are generally Thin Film Transistor (TFT) screens, so that eyesight of the children is damaged. Moreover, the existing projection equipment is usually required to be continuously adjusted in the use process, so that the projected image can be accurately displayed on a projection screen, but the operation of the adjustment process is complex, so that children cannot adjust the projection equipment by themselves quickly, and the use rate of the projection equipment is reduced.
Disclosure of Invention
The embodiment of the invention provides a projection method, a projection device, a sound box device and a storage medium, which can project on a projection wall surface, avoid the loss of a display screen of a terminal device to the eyesight of human eyes in the prior art, improve the convenience of projection, and in addition, automatically carry out projection correction by intelligently acquiring image correction parameters, reduce manual operation and further improve the intelligence of screen projection.
According to a first aspect of embodiments of the present invention, there is provided a projection method, the method including:
under the condition that a projection instruction is detected, projecting a currently played image onto a projection wall surface through a projection module, and acquiring a projection image on the projection wall surface;
obtaining the image integrity of the projected image by performing image matching on the projected image and the currently played image;
obtaining an axis included angle between a preset axis and a designated axis in the projected image;
acquiring image correction parameters according to the image integrity and the axis included angle;
and projecting the video to be projected by utilizing the image correction parameters.
In an alternative embodiment of the present invention, the image correction parameters include: a size correction parameter, and/or a tilt correction parameter;
acquiring image correction parameters according to the image integrity and the axis included angle, wherein the image correction parameters comprise:
under the condition that the image integrity exceeds a preset integrity range, acquiring a size correction parameter corresponding to the image integrity; and/or the presence of a gas in the gas,
and acquiring a tilt correction parameter corresponding to the axis included angle under the condition that the axis included angle exceeds the range of a preset included angle.
In an optional embodiment of the present invention, in a case that the image correction parameter includes the size correction parameter and the tilt correction parameter, the projecting, by using the image correction parameter, a video to be projected includes:
according to the size correction parameter and the inclination correction parameter, each frame of image included in the video to be projected is subjected to image processing respectively to obtain a target image;
and projecting the target image onto the projection wall according to the playing sequence of each frame of image included in the video to be projected.
In an optional embodiment of the present invention, in a case that the image correction parameter includes the size correction parameter and the tilt correction parameter, the projecting, by using the image correction parameter, a video to be projected includes:
adjusting the focal length of the projection module according to the size correction parameter;
performing tilt correction on the projection module according to the tilt correction parameters;
and projecting the video to be projected through the projection modules after the focal length is adjusted and the inclination is corrected.
In an alternative embodiment of the invention, the method further comprises:
receiving a video control instruction input by a user;
executing corresponding video control operation on the current projection video according to the video control instruction;
wherein the video control instruction comprises any one of the following information: voice information, gesture information, and facial expression information.
In an alternative embodiment of the invention, the method further comprises:
acquiring an object image corresponding to a user watching a current projection video, and identifying an object type corresponding to the object image;
acquiring the video type of the current projection video;
detecting whether the video type belongs to a preset video type corresponding to the object type;
and under the condition that the video type does not belong to the preset video type corresponding to the object type, generating an early warning prompt message, and sending the early warning prompt message to monitoring equipment, so that the monitoring equipment controls the projection module to switch the current projection video to an appointed video according to the early warning prompt message.
According to a second aspect of embodiments of the present invention, there is provided a projection apparatus, comprising:
the image projection unit is used for projecting the currently played image onto a projection wall surface through the projection module under the condition that the projection instruction is detected;
the projection image acquisition unit is used for acquiring a projection image on the projection wall surface;
the image integrity acquisition unit is used for acquiring the image integrity of the projected image by performing image matching on the projected image and the currently played image;
the axis included angle acquisition unit is used for acquiring an axis included angle between a preset axis and a specified axis in the projected image;
the image correction parameter acquisition unit is used for acquiring image correction parameters according to the image integrity and the axis included angle;
and the video projection unit is used for projecting the video to be projected by utilizing the image correction parameters.
In an alternative embodiment of the present invention, the image correction parameters include: a size correction parameter, and/or a tilt correction parameter;
the image correction parameter acquiring unit is further used for acquiring a size correction parameter corresponding to the image completeness under the condition that the image completeness exceeds a preset completeness range; and/or the presence of a gas in the gas,
and acquiring a tilt correction parameter corresponding to the axis included angle under the condition that the axis included angle exceeds the range of a preset included angle.
In an optional embodiment of the present invention, in a case that the image correction parameter includes the size correction parameter and the tilt correction parameter, the video projection unit is configured to perform image processing on each frame of image included in the video to be projected according to the size correction parameter and the tilt correction parameter, respectively, to obtain a target image; and the number of the first and second groups,
and projecting the target image onto the projection wall according to the playing sequence of each frame of image included in the video to be projected.
In an optional embodiment of the present invention, in a case that the image correction parameter includes the size correction parameter and the tilt correction parameter, the video projection unit is configured to perform focus adjustment on the projection module according to the size correction parameter; and the number of the first and second groups,
performing tilt correction on the projection module according to the tilt correction parameters; and the number of the first and second groups,
and projecting the video to be projected through the projection modules after the focal length is adjusted and the inclination is corrected.
In an alternative embodiment of the invention, the projection device further comprises:
the control instruction receiving unit is used for receiving a video control instruction input by a user;
the control operation execution unit is used for executing corresponding video control operation on the current projection video according to the video control instruction;
wherein the video control instruction comprises any one of the following information: voice information, gesture information, and facial expression information.
In an alternative embodiment of the invention, the projection device further comprises:
the object image acquisition unit is used for acquiring an object image corresponding to a user watching a current projection video;
an object type identification unit for identifying an object type corresponding to the object image;
the video type acquisition unit is used for acquiring the video type of the current projection video;
the video type detection unit is used for detecting whether the video type belongs to a preset video type corresponding to the object type;
and the prompt message generating unit is used for generating an early warning prompt message and sending the early warning prompt message to the monitoring equipment under the condition that the video type does not belong to the preset video type corresponding to the object type, so that the monitoring equipment controls the projection module to switch the current projection video to the specified video according to the early warning prompt message.
According to a third aspect of embodiments of the present invention, there is provided an acoustic enclosure apparatus including the projection device described in the second aspect above.
According to a fourth aspect of the embodiments of the present invention, there is provided a sound box apparatus, including a processor, a memory, and a computer program stored on the memory and executable on the processor, wherein the computer program, when executed by the processor, implements the steps of the projection method according to the first aspect.
According to a fifth aspect of embodiments of the present invention, there is provided a computer-readable storage medium on which a computer program is stored, which computer program, when being executed by a processor, realizes the steps of the projection method according to the first aspect.
According to a sixth aspect of embodiments of the present invention, there is provided a computer program product, wherein the computer program product, when run on a computer, causes the computer to perform some or all of the steps of the method described in the first aspect above.
According to a seventh aspect of embodiments of the present invention, there is provided an application publishing platform, wherein the application publishing platform is configured to publish a computer program product, and wherein the computer program product, when run on a computer, causes the computer to perform some or all of the steps of the method of the first aspect.
According to the technical scheme, the embodiment of the invention has the following advantages:
firstly, under the condition that a projection instruction is detected, projecting a currently played image onto a projection wall surface through a projection module, and acquiring a projection image on the projection wall surface; then, image matching is carried out on the projected image and the currently played image, and the image integrity of the projected image is obtained; then, an axis included angle between a preset axis and a specified axis in the projection image is obtained; acquiring image correction parameters according to the image integrity and the axis included angle; and finally, projecting the video to be projected by using the image correction parameters. Therefore, the embodiment of the invention can project on the projection wall surface, avoids the loss of the display screen of the terminal device to the eyesight of people in the prior art, improves the projection convenience, and can automatically carry out projection correction by intelligently acquiring the image correction parameters, thereby reducing manual operation and further improving the intelligence of screen projection.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the embodiments and the drawings used in the description of the prior art, and obviously, the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained according to the drawings.
Fig. 1 is a schematic flow chart of a projection method according to an embodiment of the present invention;
FIG. 2 is a schematic view of an included axis angle according to an embodiment of the present invention;
FIG. 3 is a schematic flow chart of another projection method according to an embodiment of the present invention;
FIG. 4 is a schematic flow chart illustrating another projection method according to an embodiment of the present invention;
FIG. 5 is a block diagram of a projection apparatus according to an embodiment of the present invention;
FIG. 6 is a block diagram of another projection apparatus according to an embodiment of the present invention;
FIG. 7 is a block diagram of a projection apparatus according to another embodiment of the present invention;
fig. 8 is a block diagram of another sound box device according to an embodiment of the present invention.
Detailed Description
The embodiment of the invention provides a projection method, a projection device, a sound box device and a storage medium, which are used for projecting on a projection wall surface, so that the loss of a display screen of a terminal device to the eyesight of people in the prior art is avoided, the convenience of projection is improved, in addition, the projection correction can be automatically carried out by intelligently acquiring image correction parameters, the manual operation is reduced, and the intelligence of screen projection is improved.
In order to make the technical solutions of the present invention better understood by those skilled in the art, the technical solutions in the embodiments of the present invention will be 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 embodiments. The embodiments based on the present invention should fall into the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a schematic flow chart of a projection method according to an embodiment of the present invention, and as shown in fig. 1, the method includes the following steps:
step 101, under the condition that a projection instruction is detected, projecting a currently played image onto a projection wall surface through a projection module, and acquiring a projection image on the projection wall surface.
In the embodiment of the present invention, the projection module may be built in a terminal device, and the terminal device may be a sound box device, a PC (personal computer), or the like, which can perform data processing.
In a possible implementation manner, the terminal device may detect whether a trigger operation of the user on the first projection control is received, for example, the trigger operation may be a click operation, a slide operation, or the like, and in a case that the trigger operation of the user on the first projection control is received, it is determined that the projection instruction is detected, and in a case that the trigger operation of the user on the first projection control is not received, it is determined that the projection instruction is not detected, where the first projection control may be disposed on a display screen of the terminal device.
In another possible implementation, the control device may detect whether a user-triggered operation of the second projection control is received, and, as such, the triggering operation may be a click operation, a slide operation, or the like, and, in case of receiving a triggering operation of the second projection control by the user, generating a projection instruction and sending the projection instruction and the device identification of the control device to the terminal device, so that, the terminal equipment carries out identity verification on the control equipment according to the equipment identification under the condition of receiving the projection instruction, and further, whether the equipment identifier is any one of the binding equipment identifiers stored in advance by the terminal equipment can be judged, if the equipment identifier is any one of the binding equipment identifiers stored in advance by the terminal equipment, the identity verification is successful, and at the moment, a projection image of the projection module on the projection wall surface is collected; and if the equipment identifier is not any one of the binding equipment identifiers stored in the terminal equipment in advance, the identity verification fails. The binding device identifier is a device identifier corresponding to a device pre-bound to the terminal device, and the second projection control can be arranged on a display screen of the control device.
The projection image is an image obtained by projecting a currently played image, and the currently played image may be any frame image in a video to be projected, or a pre-stored designated image, which is not limited in the present invention.
Because the limited condition that leads to probably having partial projection image to surpass this projection wall owing to the size of this projection wall, perhaps this projection image occupies a part of this projection wall and makes the projection image less, consequently, probably gather non-projection image when gathering the projection image on the projection wall through the image acquisition device that embeds among the terminal equipment, the image that the blank region of wall corresponds promptly, like this, in this step, acquire the projection image on the projection wall can include: the method comprises the steps of firstly obtaining a wall surface image corresponding to a projection wall surface, wherein the wall surface image comprises a projection image and a non-projection image, and because the brightness of the projection image is different from that of the non-projection image, the method extracts a first image feature of a foreground (equivalent to the projection image in the invention) and a second image feature of a background (equivalent to the non-projection image in the invention) according to the brightness, then adopts a graph cutting technology, carries out image segmentation according to the first image feature and the second image feature, and obtains the projection image according to a segmentation result.
And 102, obtaining the image integrity of the projected image by performing image matching on the projected image and the currently played image.
In the embodiment of the present invention, the image completeness of the projection image may be acquired by any one of the following methods:
the method comprises the steps of obtaining a pixel value of the same pixel point position in a projected image and a current playing image, determining whether the pixel value of the same pixel point position in the projected image and the current playing image is the same, determining that a matching value of the same pixel point position is a first numerical value (such as 1) under the condition that the pixel value of the same pixel point position in the projected image and the current playing image is the same, determining that the matching value of the same pixel point position is a second numerical value (such as 0) under the condition that the pixel value of the same pixel point position in the projected image and the current playing image is different, calculating the sum value of the matching values of all the pixel point positions to obtain a total matching value, and calculating the ratio of the total matching value to the total pixel point number of all the pixel points to obtain the image integrity.
And in the second mode, a first image of the edge area of the projected image is acquired, and a second image of the edge area of the currently played image is acquired, so that the matching value of the same pixel point position in the first image and the second image is acquired by the method in the first mode, and the image integrity of the projected image is calculated according to the matching value of the same pixel point position in the first image and the second image. Therefore, in the second mode, it is considered that the number of pixels included in the projected image (or the currently played image) is possibly large, and a problem of a large calculation amount exists in the process of obtaining the matching value of each pixel position, so that edge regions can be matched with the projected image and the currently played image, where the edge regions can be regions formed by designated pixel points in the projected image (or the currently played image), and the designated pixel points are pixel points whose distance from any edge of the projected image (or the currently played image) is smaller than or equal to a preset distance. Considering that the projected image (or the currently played image) is usually rectangular, a designated pixel point whose distance from any one of the four edges of the projected image (or the currently played image) is smaller than or equal to a preset distance may be obtained, and an edge region is formed according to the designated pixel point, the method for obtaining the image completion degree is only an example, and the present invention is not limited thereto.
And 103, obtaining an axis included angle between a preset axis and a specified axis in the projection image.
In the embodiment of the present invention, the preset axis may be a horizontal axis, the horizontal axis may move in parallel, and the preset axis may also be a vertical axis perpendicular to the horizontal axis; the designated axis in the projection image can be any edge line of the projection image or a line segment parallel to any variable line; the included angle of the axis can be the minimum angle of anticlockwise rotation of the designated axis which needs to be overlapped with the preset axis, or the minimum angle of clockwise rotation of the designated axis which needs to be overlapped with the preset axis.
further, taking the example in fig. 2 as an example, if the obtained projection image is as shown in fig. 2, the preset axis is a horizontal axis (as a dashed line segment shown in fig. 2), and the axis included angle is a minimum angle of counterclockwise rotation that the specified axis needs to overlap with the preset axis, the upper edge line L11 of the projection image may be taken as the specified axis, and the axis included angle is as α in fig. 2, or the lower edge line L12 of the projection image may be taken as the specified axis, and the axis included angle is the same as α and is not labeled in fig. 2, or the left edge line L21 of the projection image may be taken as the specified axis, and the axis included angle is as β in fig. 2, or the right edge line L22 of the projection image may be taken as the specified axis, and the axis included angle is the same as β and is not labeled in fig. 2, the above example is only an illustrative example, and the present invention is not limited thereto.
And step 104, acquiring image correction parameters according to the image integrity and the axis included angle.
In an embodiment of the present invention, the image correction parameters include: a size correction parameter, and/or a tilt correction parameter. Wherein the size correction parameter is used for correcting the size of the projected image, and the inclination correction parameter is used for correcting the inclination angle of the projected image.
Since the projected image is an image obtained by projecting the currently played image, if the projected image does not include more partial images in the currently played image, the viewing effect of the user is poor, and therefore, the preset completion range can be preset; and the angle of projection image slope is great for the user is impaired at the in-process eyesight of watching and watches experience poorly, consequently, can set up in advance and predetermine the contained angle scope, should predetermine the completion degree scope and should predetermine the contained angle scope and can be through artificial presetting according to the viewing effect, like this, this step can include: under the condition that the image integrity exceeds a preset integrity range, acquiring a size correction parameter corresponding to the image integrity; and/or acquiring a tilt correction parameter corresponding to the included angle of the axis under the condition that the included angle of the axis exceeds the range of the preset included angle.
Optionally, since the user may need to view the projected image with the same content as the currently played image, at this time, the present invention may further determine whether the image completion degree is smaller than a preset completion degree threshold (that is, the preset completion degree threshold is 100%), and obtain the size adjustment parameter corresponding to the image completion degree when the image completion degree is smaller than the preset completion degree threshold, and the step of obtaining the size correction parameter is not required when the image completion degree is equal to the preset completion degree threshold.
In this step, a corresponding relationship of the degree of completion may be pre-established, where the corresponding relationship of the degree of completion includes a corresponding relationship between the degree of completion of the image and the size correction parameter, and the higher the degree of completion of the image, the smaller the size correction parameter, and conversely, the lower the degree of completion of the image, the larger the size correction parameter. Thus, the size correction parameter corresponding to the image completion degree can be acquired according to the completion degree corresponding relation.
In an alternative embodiment of the present invention, in a case that the image integrity is within the preset integrity range (or the image integrity is equal to the preset integrity threshold), it is considered that the area ratio of the projection image occupying the projection wall surface may be small, so that the viewing experience of the user is poor. Therefore, the invention can also obtain the wall surface area of the projection wall surface, obtain the projection area of the projection image, calculate the ratio of the projection area to the wall surface area to obtain the area ratio, judge whether the area ratio is smaller than or equal to the preset ratio threshold, and obtain the size adjustment parameter corresponding to the area ratio under the condition that the area ratio is smaller than or equal to the preset ratio threshold, so that the size of the currently played image is corrected based on the size adjustment parameter corresponding to the area ratio in the subsequent steps. Further, the size adjustment parameter may be an image magnification ratio, so that each frame of image included in the video to be projected may be magnified according to the image magnification ratio in the subsequent step; the size adjustment parameter may be a focal length variation, so that a difference between a current focal length value of the projection module and the focal length variation may be used as a target focal length value in subsequent steps, and the focal length value of the projection module is set as the target focal length value. In summary, the image correction parameters in the present invention may further include the size adjustment parameter, so as to increase the projection area of the projection image when the area ratio of the projection image occupying the projection wall surface is small.
In addition, under the condition that the included angle of the axis is the minimum angle of the anticlockwise rotation of the specified axis which needs to be overlapped with the preset axis, the inclination correction parameter is the included angle of the axis; and under the condition that the included angle of the axis is the minimum angle of clockwise rotation required by the superposition of the specified axis and the preset axis, the inclination correction parameter is a complementary angle corresponding to the included angle of the axis.
And 105, projecting the video to be projected by using the image correction parameters.
In the embodiment of the invention, the video to be projected is the video which the user needs to watch. In the embodiment of the present invention, if the image correction parameter is a size correction parameter, projecting the video to be projected according to the size correction parameter; if the image correction parameter is an inclination correction parameter, projecting the video to be projected according to the inclination correction parameter; and if the image correction parameters are size correction parameters and inclination correction parameters, projecting the video to be projected according to the size correction parameters and the inclination correction parameters.
Further, for convenience of description, the embodiment of the present invention takes an example that the image correction parameter includes a size correction parameter and a tilt correction parameter, and the embodiment of the present invention may project the video to be projected in the following two ways:
the first method is as follows: firstly, according to the size correction parameter and the inclination correction parameter, each frame of image included in the video to be projected is subjected to image processing respectively to obtain a target image.
In this step, since the video to be projected includes a plurality of frames of images, the present invention needs to perform image processing on each frame of image. Specifically, the size correction parameter may be an image reduction scale, so that each frame of image can be reduced in accordance with the image reduction scale; the inclination correction parameter is an axis included angle, under the condition that the axis included angle is the minimum angle of anticlockwise rotation required by overlapping of a specified axis and a preset axis, the inclination correction parameter is the axis included angle, and at the moment, each frame of image is subjected to angle value corresponding to the anticlockwise rotation axis included angle; and under the condition that the axis included angle is the minimum angle of clockwise rotation required by the superposition of the specified axis and the preset axis, the inclination correction parameter is a complementary angle corresponding to the axis included angle, and at the moment, each frame of image is rotated by an angle value corresponding to the complementary angle in a counterclockwise direction.
And then, projecting the target image onto the projection wall surface according to the playing sequence of each frame of image included in the video to be projected.
In this step, since each frame of image of the video to be projected has a playing sequence, a playing sequence identifier may be preset for each frame of image, so that the target image corresponding to each frame of image also has the playing sequence identifier.
Therefore, in the first mode, each frame of image can be corrected in advance in a software correction mode, so that the projection effect of the corrected image meets the watching requirement of a user.
And secondly, firstly, adjusting the focal length of the projection module according to the size correction parameter. Specifically, the size correction parameter is a focal length variation, at this time, a sum of the current focal length value and the focal length variation may be used as a target focal length value, and the focal length value of the projection module is set as the target focal length value, and further, the focal length value of the projection module may be set as the target focal length value in a lens focusing manner. The rolling axis may be disposed at the bottom of the projection module, so as to control the projection module to move on the rolling axis to set the focal length value of the projection module as the target focal length value.
And then, carrying out inclination correction on the projection module according to the inclination correction parameters. Further, height adjusters can be arranged at a plurality of bottom positions of the projection module, so that the height adjusters can be controlled to adjust the height according to the tilt correction parameters until the axis included angle between the preset axis and the specified axis in the projection image is within the range of the preset included angle.
And then, projecting the video to be projected through the projection modules after the focal length adjustment and the inclination correction.
Therefore, in the second mode, the projection module is corrected in a hardware correction mode, so that the projection effect of the image projected by the corrected projection module meets the watching requirement of a user.
By adopting the method, firstly, under the condition that a projection instruction is detected, a currently played image is projected onto a projection wall surface through a projection module, and a projection image on the projection wall surface is obtained; then, image matching is carried out on the projected image and the currently played image, and the image integrity of the projected image is obtained; then, an axis included angle between a preset axis and a specified axis in the projection image is obtained; acquiring image correction parameters according to the image integrity and the axis included angle; and finally, projecting the video to be projected by using the image correction parameters. Therefore, the embodiment of the invention can project on the projection wall surface, avoids the loss of the display screen of the terminal device to the eyesight of people in the prior art, improves the projection convenience, and can automatically carry out projection correction by intelligently acquiring the image correction parameters, thereby reducing manual operation and further improving the intelligence of screen projection.
Referring to fig. 3, fig. 3 is a schematic flow chart of a projection method according to an embodiment of the present invention, and as shown in fig. 3, the embodiment of the present invention is described by taking as an example that the projection apparatus is disposed in a sound box device, and the method includes the following steps:
step 301, under the condition that the sound box device detects the projection instruction, projecting the currently played image onto the projection wall surface through the projection module, and acquiring the projection image on the projection wall surface.
For a specific process, refer to step 101, and are not described again.
Step 302, the sound box device performs image matching on the projected image and the currently played image to obtain the image integrity of the projected image.
The specific process may refer to step 102, and is not described in detail.
And 303, acquiring an axis included angle between a preset axis and a specified axis in the projection image by the sound box equipment.
For a specific process, refer to step 103, and are not described in detail.
And step 304, the sound box equipment acquires image correction parameters according to the image integrity and the axis included angle.
The specific process may refer to step 104, and is not described in detail.
And 305, projecting the video to be projected by the sound box equipment by using the image correction parameters.
For a specific process, reference may be made to step 105, which is not described in detail.
Step 306, the sound box device receives a video control instruction input by a user.
The video control instruction may include any one of the following information: audio information, gesture information, and facial expression information. And, the video control instruction may be a video change instruction, a video progress adjustment instruction, a video volume adjustment instruction, and the like.
Further, each kind of information included in the video control instruction is described below:
firstly, under the condition that the video control instruction includes audio information, since the sound box device may detect the audio information of a non-specified user in the current environment, the specified user is a user bound with the sound box device in advance, at this time, in order to accurately perform the video control operation in the subsequent steps, before this step, user authentication may be performed according to the audio information, that is, it is determined whether a target voiceprint feature included in the audio information is any one of preset voiceprint features, and under the condition that the target voiceprint feature is any one of the preset voiceprint features, it is determined that the user authentication is successful, and step 307 is performed; and under the condition that the target voiceprint feature is not any one of the preset voiceprint features, determining that the user authentication fails, and ending the process.
For example, if the video control command is a video change command, the voice message may be "please play the earth of wandering"; if the video control instruction is a video progress adjustment instruction, the voice information may be "please execute video fast forward operation" when the user needs to fast forward the currently projected video, and "please stop video fast forward operation" is input when the user needs to stop fast forward; when a user needs to back up a current projection video, the voice message can be 'please execute video back-up operation', and when the user needs to stop back-up, the user inputs 'please stop video back-up operation'; if the video control instruction is a video volume adjustment instruction, the voice information may be "please execute a video volume up operation" when the user needs to perform a volume up operation on the current projection video, and "please stop the video volume up operation" when the user needs to stop the volume up operation; in the case that the user needs to turn down the volume of the currently projected video, the voice message may be "please perform the video volume turning down operation", and when the user needs to stop turning down the volume, input "please stop the video volume turning down operation", and so on.
In a possible implementation manner, an audio receiver (such as a microphone) may be disposed in the sound box device in the embodiment of the present invention, so that the audio receiver collects audio information within a preset range; in another possible implementation manner, when the user wears the bluetooth headset, the bluetooth headset and the speaker device establish a connection relationship in advance, and the user can input audio information to the bluetooth headset and send the audio information to the speaker device through the bluetooth headset.
Then, under the condition that the video control instruction includes gesture information, since the sound box device may detect gesture information of a non-designated user in the current environment, the designated user is a user pre-bound with the sound box device, at this time, in order to accurately perform the video control operation in the subsequent steps, before this step, user authentication may also be performed according to the gesture information, that is, it is determined whether a target fingerprint feature included in the gesture information is any one of the preset fingerprint features, and under the condition that the target fingerprint feature is any one of the preset fingerprint features, it is determined that the user authentication is successful, and step 307 is performed; and under the condition that the target fingerprint feature is not any one of the preset fingerprint features, determining that the user authentication fails, and ending the process.
For example, if the video control instruction is a video change instruction, the gesture information may be a single finger pointing in a first direction; if the video control instruction is a video progress adjustment instruction, the gesture information can be that a single finger points to a second direction under the condition that the user needs to fast forward the current projection video, and when the user needs to stop fast forward, a fist making operation is performed; under the condition that a user needs to retreat the current projection video, the gesture information can be that a single finger points to a third direction, and when the user needs to stop retreating, the fist making operation is carried out; if the video control instruction is a video volume adjustment instruction, the gesture information can be that two fingers point to a second direction under the condition that the user needs to increase the volume of the current projection video, and the fist making operation is performed when the user needs to stop increasing the volume; when the user needs to turn down the volume of the current projection video, the gesture information may be that two fingers point to a third direction, and when the user needs to stop turning down the volume, a fist making operation is performed, and the like.
The sound box device in the embodiment of the invention can be provided with an image collector (such as a camera) so that the image collector collects fingerprint images within a preset range according to a preset period, and then fingerprint information is extracted from the fingerprint images.
Finally, in the case that the video control instruction includes facial expression information, since the speaker device may detect facial expression information of a non-designated user in the current environment, the designated user is a user pre-bound with the speaker device, at this time, in order to accurately perform the video control operation in the subsequent steps, before this step, user authentication may also be performed according to the facial expression information, that is, it is determined whether a target facial feature included in the facial expression information is any one of the preset facial features, and in the case that the target facial feature is any one of the preset facial features, it is determined that the user authentication is successful, and step 307 is performed; and under the condition that the target face features are not any face features in the preset face features, determining that the user authentication fails, and ending the process.
For example, if the video control instruction is a video change instruction, the facial expression information may be closed-eye expression information; if the video control instruction is a video progress adjustment instruction, the facial expression information can be expression information with a closed left eye under the condition that a user needs to fast forward a current projection video, and when the user needs to stop fast forward, mouth opening operation is carried out; under the condition that a user needs to back the current projection video, the facial expression information can be expression information of the right eye which is closed, and when the user needs to stop fast forward, the mouth opening operation is carried out; if the video control instruction is a video volume adjusting instruction, the facial expression information can be expression information which blinks eyes for M times within a preset time period under the condition that a user needs to turn up the volume of the current projection video, and the mouth is opened when the user needs to stop turning up the volume; in the case that the user needs to turn down the volume of the current projection video, the facial expression information may be expression information of blinking eyes N times within a preset time period, and when the user needs to stop turning down the volume, the user performs a mouth opening operation, M, N is a different positive integer, and so on.
The sound box device in the embodiment of the invention can be provided with an image collector (such as a camera) so that the image collector collects face images in a preset range according to a preset period, and then facial expression information is extracted from the face images.
The video control instruction can be obtained through the sound box device in the process, of course, the video control instruction can also be obtained through the control device bound with the sound box device, and the specific process can refer to the process of receiving the video control instruction input by the user through the sound box device, and is not repeated.
And 307, the sound box equipment executes corresponding video control operation on the current projection video according to the video control instruction.
In this step, if the video control instruction is a video change instruction, under the condition that the video control instruction includes audio information, the video control operation is to switch the current projection video to a target video corresponding to the video identifier because the audio information includes a video identifier; under the condition that the video control instruction comprises gesture information or facial expression information, the gesture information and the facial expression information are limited, so that different videos cannot be respectively represented by different gesture information.
Continuing with the example of step 306 as an example, if the video control instruction is a video progress adjustment instruction, in a case where the video control instruction includes audio information, since the audio information may include progress keywords "execute video fast forwarding operation", "stop video fast forwarding operation", "execute video rewinding operation", or "stop video rewinding operation", and the like, the video progress adjustment operation may be performed on the currently projected video by identifying the progress keywords; under the condition that the video control instruction comprises gesture information, if a single finger is detected to point to a second direction, performing video fast-forward operation on the current projection video, and if the single finger is detected to point to a third direction, performing video backward operation on the current projection video; under the condition that the video control instruction comprises facial expression information, if expression information of the left eye is detected, performing video fast-forward operation on the current projection video, and if expression information of the right eye is detected, performing video backward operation on the current projection video.
Continuing with the example of step 306 as an example, if the video control instruction is a video volume adjustment instruction, if the video control instruction includes audio information, since the audio information may include volume keywords, "execute a video volume up operation," "stop the video volume up operation," "execute a video volume down operation," or "stop the video volume down operation," and the like, a video progress adjustment operation may be performed on the currently projected video by identifying the volume keywords; under the condition that the video control instruction comprises gesture information, if two fingers are detected to point to a second direction, volume-up operation is carried out on the current projection video, and if two fingers are detected to point to a third direction, volume-down operation is carried out on the current projection video; in the case that the video control instruction includes facial expression information, if expression information blinking M times is detected within a preset time period, performing a volume up operation on the current projection video, and if expression information blinking N times is detected within the preset time period, performing a volume down operation on the current projection video.
By adopting the method, firstly, under the condition that a projection instruction is detected, a currently played image is projected onto a projection wall surface through a projection module, and a projection image on the projection wall surface is obtained; then, image matching is carried out on the projected image and the currently played image, and the image integrity of the projected image is obtained; then, an axis included angle between a preset axis and a specified axis in the projection image is obtained; acquiring image correction parameters according to the image integrity and the axis included angle; and secondly, projecting the video to be projected by using the image correction parameters, and finally executing corresponding video control operation on the current projected video according to a video control instruction input by a user. Therefore, the embodiment of the invention can project on the projection wall surface, avoids the loss of the display screen of the terminal device to the eyesight of people in the prior art, improves the projection convenience, and can automatically carry out projection correction by intelligently acquiring the image correction parameters, thereby reducing manual operation and further improving the intelligence of screen projection. In addition, the video control instruction in the embodiment of the invention can comprise any one of voice information, gesture information and facial expression information, so that the complexity of man-machine interaction is reduced.
Referring to fig. 4, fig. 4 is a schematic flow chart of a projection method according to an embodiment of the present invention, and as shown in fig. 4, the embodiment of the present invention is described by taking as an example that the projection apparatus is disposed in a sound box device, where the method includes the following steps:
step 401, when the sound box device detects a projection instruction, projecting a currently played image onto a projection wall surface through a projection module, and acquiring a projection image on the projection wall surface.
For a specific process, refer to step 101, and are not described again.
Step 402, the sound box device performs image matching on the projected image and the currently played image to acquire the image integrity of the projected image.
The specific process may refer to step 102, and is not described in detail.
And 403, acquiring an axis included angle between a preset axis and a specified axis in the projection image by the sound box equipment.
For a specific process, refer to step 103, and are not described in detail.
And step 404, the sound box equipment acquires image correction parameters according to the image integrity and the axis included angle.
The specific process may refer to step 104, and is not described in detail.
Step 405, the sound box device projects the video to be projected by using the image correction parameters.
For a specific process, reference may be made to step 105, which is not described in detail.
Step 406, the sound box device obtains an object image corresponding to the user watching the current projection video, and identifies an object category corresponding to the object image.
In the embodiment of the present invention, an image collector (such as a camera) may be disposed in the speaker device, so that the image collector collects an object image within a preset range according to a preset period, thereby extracting an object feature from the object image, and further determining an object type of the object image based on the object feature. The object image can be a face image, and the object feature is a face feature at the moment; of course, the object image may also be a human body image, and the object feature is a human body feature at this time.
Optionally, in the embodiment of the present invention, object image samples of different users may be collected in advance, where the object image samples are labeled with objects to which the objects belong in advance, and then a preset classification model is trained through the object image samples to obtain a trained object recognition model, so that the object class corresponding to the object image is recognized through the object recognition model, where the preset classification model may be a recurrent neural network model, a convolutional neural network model, an SVM (Support vector machine) model, or the like. For example, the present invention is applied to a home theater scenario in which family members may include a father, a mother, and a daughter, and in one possible scenario, a plurality of daughter face images, a plurality of father face images, and a plurality of mother face images may be collected in advance, so that a preset classification model is trained through the plurality of daughter face images, the plurality of father face images, and the plurality of mother face images, so as to identify the family members to which the object images belong through the trained object recognition model.
Step 407, the sound box device obtains the video type of the current projection video.
In the embodiment of the present invention, the sound box device may set a corresponding video type for each video in advance, so that the video type corresponding to the current projection video may be obtained in this step.
It should be noted that, in order to reduce the calculation workload of the sound box device, in the embodiment of the present invention, a corresponding video type may be set for each video by the service end corresponding to the sound box device, so that the step may include: the sound box equipment sends a video type obtaining request to the server side, the video type obtaining request comprises a video identifier of the current projection video, and therefore the server side obtains the video type corresponding to the current projection video according to the video type obtaining request and sends the video type corresponding to the current projection video to the sound box equipment.
And step 408, the sound box device detects whether the video type belongs to a preset video type corresponding to the object type.
Returning to step 406 under the condition that the video type belongs to the preset video type corresponding to the object type;
if the video type does not belong to the preset video type corresponding to the object category, step 409 is executed.
In the embodiment of the present invention, a corresponding preset video type may be set for each object category in advance. Exemplarily, if the object type is a child, the preset video type is a teaching video, an animation film, or the like; if the object type is the old, the preset video type is a city drama, a military travel drama and the like; if the object type is young, the preset video type is suspense drama, anarchic program, idol drama, etc.
In an alternative embodiment of the present invention, step 408 may also be: acquiring a watching time period for watching the current projection video, judging whether the video type belongs to the watching video type corresponding to the object type in the current time period, and returning to the step 406 under the condition that the video type belongs to the watching video type corresponding to the object type in the current time period; if the video type does not belong to the preset video type corresponding to the object category in the current time period, step 409 is executed. Illustratively, the child is at 10: a time period of between 00 and 11:40, and 14: the time period between 00 and 16:20 needs to watch the teaching video for learning, and the time period is 16: the time period between 40 and 19:20 can be used for watching the cartoon for entertainment, and if the watching time of the current projection video is 10:50, the ratio of 10:50 is 10: and the time period is 00-11: 40, so that if the current projection video is detected to be an animation film, prompting needs to be carried out on a guardian of the child, and if the current projection video is detected to be a teaching video, prompting does not need to be carried out.
And 409, generating an early warning prompt message by the loudspeaker box equipment, and sending the early warning prompt message to the monitoring equipment so that the monitoring equipment controls the projection module to switch the current projection video to the specified video according to the early warning prompt message.
By adopting the method, firstly, under the condition that a projection instruction is detected, a currently played image is projected onto a projection wall surface through a projection module, and a projection image on the projection wall surface is obtained; then, image matching is carried out on the projected image and the currently played image, and the image integrity of the projected image is obtained; then, an axis included angle between a preset axis and a specified axis in the projection image is obtained; acquiring image correction parameters according to the image integrity and the axis included angle; secondly, projecting a video to be projected by using the image correction parameters, and finally acquiring an object image corresponding to a user watching the current projection video, identifying an object type corresponding to the object image, acquiring the video type of the current projection video, and detecting whether the video type belongs to a preset video type corresponding to the object type; and under the condition that the video type does not belong to the preset video type corresponding to the object type, generating an early warning prompt message, and sending the early warning prompt message to the monitoring equipment so that the monitoring equipment controls the projection module to switch the current projection video to the specified video according to the early warning prompt message. Therefore, the embodiment of the invention can project on the projection wall surface, avoids the loss of the display screen of the terminal device to the eyesight of people in the prior art, improves the projection convenience, and can automatically carry out projection correction by intelligently acquiring the image correction parameters, thereby reducing manual operation and further improving the intelligence of screen projection. In addition, in the embodiment of the invention, the current projection video can be switched through the monitoring equipment, so that the remote control of the video is realized.
Referring to fig. 5, fig. 5 is a block diagram illustrating a structure of a projection apparatus 50 according to an embodiment of the present invention, and as shown in fig. 5, the apparatus 50 includes:
the image projection unit 501 is configured to project a currently played image onto a projection wall surface through a projection module when a projection instruction is detected;
a projection image obtaining unit 502, configured to obtain a projection image on the projection wall surface;
an image integrity acquisition unit 503, configured to acquire an image integrity of the projected image by performing image matching on the projected image and the currently played image;
an axis included angle obtaining unit 504, configured to obtain an axis included angle between a preset axis and a specified axis in the projection image;
an image correction parameter obtaining unit 505, configured to obtain an image correction parameter according to the image integrity and the axis included angle;
and a video projection unit 506, configured to project a video to be projected by using the image correction parameter.
In an alternative embodiment of the present invention, the image correction parameters include: a size correction parameter, and/or a tilt correction parameter;
the image correction parameter obtaining unit 505 is further configured to obtain a size correction parameter corresponding to the image completeness when the image completeness exceeds a preset completeness range; and/or the presence of a gas in the gas,
and acquiring a tilt correction parameter corresponding to the axis included angle under the condition that the axis included angle exceeds the range of a preset included angle.
In an optional embodiment of the present invention, in a case that the image correction parameter includes the size correction parameter and the tilt correction parameter, the video projection unit 506 is configured to perform image processing on each frame of image included in the video to be projected according to the size correction parameter and the tilt correction parameter, respectively, to obtain a target image; and the number of the first and second groups,
and projecting the target image onto the projection wall according to the playing sequence of each frame of image included in the video to be projected.
In an optional embodiment of the present invention, in a case that the image correction parameter includes the size correction parameter and the tilt correction parameter, the video projection unit 506 is configured to perform a focus adjustment on the projection module according to the size correction parameter; and the number of the first and second groups,
performing tilt correction on the projection module according to the tilt correction parameters; and the number of the first and second groups,
and projecting the video to be projected through the projection modules after the focal length is adjusted and the inclination is corrected.
Referring to fig. 6, fig. 6 is a block diagram illustrating a structure of another projection apparatus 50 according to an embodiment of the present invention, and as shown in fig. 6, the projection apparatus 50 further includes:
a control instruction receiving unit 507, configured to receive a video control instruction input by a user;
a control operation execution unit 508, configured to execute a corresponding video control operation on the current projection video according to the video control instruction;
wherein the video control instruction comprises any one of the following information: voice information, gesture information, and facial expression information.
Referring to fig. 7, fig. 7 is a block diagram illustrating a structure of another projection apparatus 50 according to an embodiment of the present invention, and as shown in fig. 7, the projection apparatus 50 further includes:
an object image obtaining unit 509, configured to obtain an object image corresponding to a user viewing a current projection video;
an object type identification unit 510, configured to identify an object type corresponding to the object image;
a video type obtaining unit 511, configured to obtain a video type of the current projection video;
a video type detecting unit 512, configured to detect whether the video type belongs to a preset video type corresponding to the object type;
a prompt message generating unit 513, configured to generate an early warning prompt message when the video type does not belong to the preset video type corresponding to the object type, and send the early warning prompt message to a monitoring device, so that the monitoring device controls the projection module to switch the current projection video to an appointed video according to the early warning prompt message.
By adopting the device, firstly, under the condition that a projection instruction is detected, a currently played image is projected onto a projection wall surface through a projection module, and a projection image on the projection wall surface is obtained; then, image matching is carried out on the projected image and the currently played image, and the image integrity of the projected image is obtained; then, an axis included angle between a preset axis and a specified axis in the projection image is obtained; acquiring image correction parameters according to the image integrity and the axis included angle; and finally, projecting the video to be projected by using the image correction parameters. Therefore, the embodiment of the invention can project on the projection wall surface, avoids the loss of the display screen of the terminal device to the eyesight of people in the prior art, improves the projection convenience, and can automatically carry out projection correction by intelligently acquiring the image correction parameters, thereby reducing manual operation and further improving the intelligence of screen projection.
Optionally, an embodiment of the present invention further provides a terminal device, where the projection apparatus is disposed in the terminal device.
Optionally, an embodiment of the present invention further provides a sound box device, where the sound box device includes the projection apparatus described above.
Referring to fig. 8, fig. 8 is a schematic structural diagram of a sound box apparatus according to an embodiment of the present invention. As shown in fig. 8, the speaker device may include:
a memory 801 in which executable program code is stored;
a processor 802 coupled with the memory 801;
wherein the processor 802 calls the executable program code stored in the memory 801 to perform some or all of the steps of the methods in the above method embodiments.
Optionally, an embodiment of the present invention also discloses a computer-readable storage medium, where the computer-readable storage medium stores program code, where the program code includes instructions for executing part or all of the steps of the method in the above method embodiments.
Optionally, the embodiment of the present invention also discloses a computer program product, wherein when the computer program product runs on a computer, the computer is caused to execute part or all of the steps of the method as in the above method embodiments.
Optionally, an embodiment of the present invention further discloses an application publishing platform, where the application publishing platform is configured to publish a computer program product, where when the computer program product runs on a computer, the computer is caused to perform some or all of the steps of the method in the above method embodiments.
In the embodiments provided in the present invention, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The projection method, the projection apparatus, the speaker device, and the storage medium disclosed in the embodiments of the present invention are described in detail above, and the principles and embodiments of the present invention are explained herein by applying specific examples, and the descriptions of the above embodiments are only used to help understanding the method and the core ideas of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.

Claims (10)

1. A method of projection, the method comprising:
under the condition that a projection instruction is detected, projecting a currently played image onto a projection wall surface through a projection module, and acquiring a projection image on the projection wall surface;
obtaining the image integrity of the projected image by performing image matching on the projected image and the currently played image;
obtaining an axis included angle between a preset axis and a designated axis in the projected image;
acquiring image correction parameters according to the image integrity and the axis included angle;
and projecting the video to be projected by utilizing the image correction parameters.
2. The method of claim 1, wherein the image correction parameters comprise: a size correction parameter, and/or a tilt correction parameter;
acquiring image correction parameters according to the image integrity and the axis included angle, wherein the image correction parameters comprise:
under the condition that the image integrity exceeds a preset integrity range, acquiring a size correction parameter corresponding to the image integrity; and/or the presence of a gas in the gas,
and acquiring a tilt correction parameter corresponding to the axis included angle under the condition that the axis included angle exceeds the range of a preset included angle.
3. The method according to claim 2, wherein in the case that the image correction parameters include the size correction parameter and the tilt correction parameter, the projecting the video to be projected by using the image correction parameters comprises:
according to the size correction parameter and the inclination correction parameter, each frame of image included in the video to be projected is subjected to image processing respectively to obtain a target image;
and projecting the target image onto the projection wall according to the playing sequence of each frame of image included in the video to be projected.
4. The method according to claim 2, wherein in the case that the image correction parameters include the size correction parameter and the tilt correction parameter, the projecting the video to be projected by using the image correction parameters comprises:
adjusting the focal length of the projection module according to the size correction parameter;
performing tilt correction on the projection module according to the tilt correction parameters;
and projecting the video to be projected through the projection modules after the focal length is adjusted and the inclination is corrected.
5. The method according to any one of claims 1 to 4, further comprising:
receiving a video control instruction input by a user;
executing corresponding video control operation on the current projection video according to the video control instruction;
wherein the video control instruction comprises any one of the following information: voice information, gesture information, and facial expression information.
6. The method according to any one of claims 1 to 4, further comprising:
acquiring an object image corresponding to a user watching a current projection video, and identifying an object type corresponding to the object image;
acquiring the video type of the current projection video;
detecting whether the video type belongs to a preset video type corresponding to the object type;
and under the condition that the video type does not belong to the preset video type corresponding to the object type, generating an early warning prompt message, and sending the early warning prompt message to monitoring equipment, so that the monitoring equipment controls the projection module to switch the current projection video to an appointed video according to the early warning prompt message.
7. A projection device, the projection device comprising:
the image projection unit is used for projecting the currently played image onto a projection wall surface through the projection module under the condition that the projection instruction is detected;
the projection image acquisition unit is used for acquiring a projection image on the projection wall surface;
the image integrity acquisition unit is used for acquiring the image integrity of the projected image by performing image matching on the projected image and the currently played image;
the axis included angle acquisition unit is used for acquiring an axis included angle between a preset axis and a specified axis in the projected image;
the image correction parameter acquisition unit is used for acquiring image correction parameters according to the image integrity and the axis included angle;
and the video projection unit is used for projecting the video to be projected by utilizing the image correction parameters.
8. An acoustic enclosure apparatus, characterized in that the acoustic enclosure apparatus comprises the projection device of claim 7.
9. Loudspeaker device, comprising a processor, a memory and a computer program stored on the memory and executable on the processor, the computer program, when being executed by the processor, realizing the steps of the projection method according to any one of claims 1 to 6.
10. A computer-readable storage medium, characterized in that a computer program is stored on the computer-readable storage medium, which computer program, when being executed by a processor, carries out the steps of the projection method of any one of claims 1 to 6.
CN201910898505.7A 2019-09-23 2019-09-23 Projection method, projection device, sound box equipment and storage medium Pending CN111182280A (en)

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