CN111327885A - Shop advertisement projection lamp projection method based on Internet of things - Google Patents
Shop advertisement projection lamp projection method based on Internet of things Download PDFInfo
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- CN111327885A CN111327885A CN202010074964.6A CN202010074964A CN111327885A CN 111327885 A CN111327885 A CN 111327885A CN 202010074964 A CN202010074964 A CN 202010074964A CN 111327885 A CN111327885 A CN 111327885A
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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
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T3/00—Geometric image transformation in the plane of the image
- G06T3/60—Rotation of a whole image or part thereof
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F19/00—Advertising or display means not otherwise provided for
- G09F19/12—Advertising or display means not otherwise provided for using special optical effects
- G09F19/18—Advertising or display means not otherwise provided for using special optical effects involving the use of optical projection means, e.g. projection of images on clouds
Abstract
The invention discloses a shop advertisement projection lamp projection method based on the Internet of things, which comprises the following steps: responding to a first command sent by a user terminal, and sending information of an advertisement image to be projected to a control terminal; selecting a negative film containing the information of the advertisement image to be projected; responding to the scanning and identification of the infrared scanning equipment to the negative film, and sending the position of the area to be projected to the control terminal; acquiring the actual coordinates of the area to be projected according to the position of the area to be projected; according to the actual coordinates of the area to be projected, solving the center coordinates of the area to be projected, and solving the rotation angle of the first coordinate system where the advertisement image to be projected is located, which corresponds to the projection area; rotating the advertisement image to be projected according to the rotation angle; and projecting the rotated advertisement image to be projected to a real-time projection coordinate according to the central coordinate of the area to be projected and the first coordinate value of the advertisement image to be projected. According to the invention, by the projection method, automatic projection of the advertisement image according to the projection area is realized.
Description
Technical Field
The invention relates to the technical field of advertisement projection lamps, in particular to a shop advertisement projection lamp projection method based on the Internet of things.
Background
Along with the development of society, the economy is flourishing, the living standard of people is improved, places such as hotels, markets and the like bloom all the time, and the projection advertisement can overcome the limitations that the common outdoor advertising board and the lamp box have large power consumption, are easy to fade for a long time, are easy to be damaged by people, smeared and polluted and the like; the advertisement projection lamp utilizes an optical principle for imaging, has the advantages of low power consumption, light weight, no damage to floors and ground, no influence on site environment and overall planning, no pollution, strong wind resistance and the like, and is deeply favored by various merchants.
In the prior art, the projection mode of the advertisement projection lamp is single, and the projection position of the projection pattern needs to be changed by manually rotating the advertisement projection lamp or changing the position of the advertisement projection lamp.
Disclosure of Invention
In view of the defects in the prior art, the technical problem to be solved by the invention is to provide a shop advertisement projection lamp projection method based on the internet of things, and the method aims to change the projection mode of an advertisement projection lamp and realize automatic projection of an advertisement image according to a projection area.
In order to achieve the purpose, the invention provides a shop advertisement projection lamp projection method based on the Internet of things, which comprises the following steps:
step S1, responding to the first command sent by the user terminal, and sending information of the advertisement image to be projected to the control terminal; selecting a negative film containing the information of the advertisement image to be projected according to the information of the advertisement image to be projected; wherein the first command is for activating an advertisement projection lamp; the information of the advertisement image to be projected includes: advertisement content to be projected and first coordinate value (x) of advertisement image to be projectedcon,ycon) (ii) a The first coordinate value of the advertisement image to be projected refers to the coordinate of the advertisement image to be projected on a first coordinate system; the first coordinate system is a coordinate system where the negative film containing the advertisement image to be projected is located;
step S2, responding to the scanning and identification of the negative film by the infrared scanning equipment, and sending the position of the area to be projected to the control terminal; acquiring the actual coordinates of the area to be projected according to the position of the area to be projected; the actual coordinates include: first upper left corner coordinate A (x)A,yA) First upper right corner coordinate B (x)B,yB) The first lower right corner coordinate C (x)C,yC) First lower left corner coordinate D (x)D,yD);
Step S3, according to the actual coordinates of the to-be-projected area, the central coordinates (u) of the to-be-projected area are solvedmid,vmid) Solving forThe first coordinate system of the advertisement image to be projected corresponds to a rotation angle theta of the projection area; wherein u ismid、vmidSatisfies the following conditions:the above-mentionedThe above-mentionedThe angle of rotationThe above-mentioned
Step S4, according to the rotation angle theta, rotating the advertisement image to be projected; according to the central coordinate (x) of the area to be projectedmid,ymid) A first coordinate value (x) of the advertisement image to be projectedcon,ycon) Projecting the rotated advertisement image to be projected to a real-time projection coordinate (x)pro,ypro) (ii) a The real-time projection coordinates satisfy: (x)pro,ypro)=(xmid+xcon,ymid+ycon)。
In this technical solution, the center coordinate (x) of the projection area is determined by obtaining the actual coordinate of the projection areamid,ymid) And the rotation angle theta of the advertisement image to be projected is used for rotating the advertisement image to be projected through the rotation angle theta, so that the advertisement image projected to the projection area is positioned at a preset position, the advertisement image is automatically projected according to the projection area, when the projection position needs to be changed, the projection position can be changed by re-acquiring the actual coordinate of the projection area, the advertisement projection lamp does not need to be manually adjusted to change the projection position, and the installation positions of some advertisement projection lamps are different from those of other advertisement projection lampsThe safety is effectively improved through automatic projection; since the projection area includes four corners, and actually three points can determine the center of the projection area, and there is a conflict with the fourth point, in this embodiment, the center of the projection area is determined by construction In order to solve for an estimate of the center positionThe center positioning of the projection area is realized, and the accuracy of the center positioning is improved; in the technical scheme, the slope relation between the vector and the coordinate system where the negative film is located is formed by connecting four points of the projection areaSo as to obtain a more accurate first coordinate rotation angle, so as to rotate the advertisement image to be projected and avoid the rotation dislocation of the advertisement image to be projected; in addition, in the technical scheme, the method comprises the following stepsI.e. by judging the vectorWhen the direction is positive X-axis direction, theta is arctank, vectorWhen the orientation is in the X-axis negative direction, theta is arctank + pi, so that the orientation of the advertisement image to be projected is prevented from being mistaken.
In a specific embodiment, the method further comprises adjusting the magnification of the advertisement image to be projected by adjusting the position of the negative.
In a specific embodiment, the step S4 specifically further includes:
according to the factTime projection coordinate (x)pro,ypro) And a first coordinate value (x) of the advertisement image to be projectedcon,ycon) Obtaining the projection direction of the advertisement projection lamp, wherein the projection direction comprises a pitch angle α and an azimuth angleThe real-time projection coordinate point (x)pro,ypro) With the first coordinate point (x) of the advertisement image to be projectedcon,ycon) The included angle between the first vertical line and the first vertical line is the pitch angle α, and the included angle between the projection line of the first vertical line on the second coordinate system of the projection area and the X axis of the second coordinate system is the azimuth angle
In a specific embodiment, the method further comprises:
determining the orientation of the advertisement image to be projected according to the first upper left corner A, the first upper right corner B, the first lower right corner C and the first lower left corner D of the area to be projected; the second upper left corner E, the second upper right corner F, the second lower right corner G and the second lower left corner H of the advertisement image to be projected correspond to the first upper left corner A, the first upper right corner B, the first lower right corner C and the first lower left corner D of the area to be projected one by one.
In a specific embodiment, a mounting seat provided with the bottom plate is connected with a stepping motor through a gear, and the mounting seat can rotate along with the rotation of the stepping motor.
In one embodiment, the light source of the advertisement projection lamp is an LED lamp.
The invention has the beneficial effects that: in the present invention, the center coordinate (x) of the projection area is determined by acquiring the actual coordinate of the projection areamid,ymid) And the rotation angle theta of the advertisement image to be projected by which the advertisement image to be projected is to be projectedThe projected advertisement image is rotated, so that the advertisement image projected to the projection area is located at a preset position, automatic projection of the advertisement image according to the projection area is realized, when the projection position needs to be changed, the change of the projection position can be realized by acquiring the actual coordinate of the projection area again, the projection position does not need to be changed by manually adjusting advertisement projection lamps, and the safety is effectively improved through automatic projection due to the fact that the installation positions of some advertisement projection lamps are higher; since the projection area includes four corners, and actually three points can determine the center of the projection area, and there is a conflict with the fourth point, in this embodiment, the center of the projection area is determined by constructionIn order to solve for an estimate of the center positionThe center positioning of the projection area is realized, and the accuracy of the center positioning is improved; in the technical scheme, the slope relation between the vector and the coordinate system where the negative film is located is formed by connecting four points of the projection areaSo as to obtain a more accurate first coordinate rotation angle, so as to rotate the advertisement image to be projected and avoid the rotation dislocation of the advertisement image to be projected; in addition, in the technical scheme, the method comprises the following stepsI.e. by judging the vectorWhen the direction is positive X-axis direction, theta is arctank, vectorWhen the orientation is in the X-axis negative direction, theta is arctank + pi, so that the orientation of the advertisement image to be projected is prevented from being mistaken.
Drawings
Fig. 1 is a block flow diagram of a shop advertisement projection lamp projection method based on the internet of things according to an embodiment of the present invention;
FIG. 2 is a system block diagram of a store advertisement projection lamp projection system in accordance with an embodiment of the present invention;
FIG. 3 is a diagram illustrating a position relationship between a projection area and an advertisement image to be projected according to an embodiment of the present invention;
fig. 4 is a diagram illustrating an angle relationship between a first coordinate system and a projection area according to an embodiment of the present invention.
Detailed Description
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
as shown in fig. 1 to 3, in a first embodiment of the present invention, there is provided an internet of things based shop advertisement projection lamp projection method, including the following steps:
step S1, responding to the first command sent by the user terminal, and sending information of the advertisement image to be projected to the control terminal; selecting a negative film containing the information of the advertisement image to be projected according to the information of the advertisement image to be projected; wherein the first command is for activating an advertisement projection lamp; the information of the advertisement image to be projected includes: advertisement content to be projected and first coordinate value (x) of advertisement image to be projectedcon,ycon) (ii) a The first coordinate value of the advertisement image to be projected refers to the coordinate of the advertisement image to be projected on a first coordinate system; the first coordinate system is a coordinate system where the negative film containing the advertisement image to be projected is located;
step S2, responding to the scanning and identification of the negative film by the infrared scanning equipment, and sending the position of the area to be projected to the control terminal; acquiring the actual coordinates of the area to be projected according to the position of the area to be projected; the actual coordinates include: first upper left corner coordinate A (x)A,yA) First upper right corner coordinate B (x)B,yB) The first lower right corner coordinate C (x)C,yC) First lower left corner coordinate D (x)D,yD);
Step S3, according to the actual coordinates of the to-be-projected area, the central coordinates (u) of the to-be-projected area are solvedmid,vmid) Solving a rotation angle theta of the first coordinate system where the advertisement image to be projected is located, which corresponds to the projection area; wherein u ismid、vmidSatisfies the following conditions:the above-mentionedThe above-mentionedThe angle of rotationThe above-mentioned
Step S4, according to the rotation angle theta, rotating the advertisement image to be projected; according to the central coordinate (x) of the area to be projectedmid,ymid) A first coordinate value (x) of the advertisement image to be projectedcon,ycon) Projecting the rotated advertisement image to be projected to a real-time projection coordinate (x)pro,ypro) (ii) a The real-time projection coordinates satisfy: (x)pro,ypro)=(xmid+xcon,ymid+ycon)。
In this embodiment, the method further comprises adjusting the magnification of the advertisement image to be projected by adjusting the position of the negative film.
In this embodiment, the step S4 specifically further includes:
from the real-time projection coordinates (x)pro,ypro) And a first coordinate value (x) of the advertisement image to be projectedcon,ycon) Acquiring the projection direction of the advertisement projection lamp; the projection sideIncluding pitch α and azimuthThe real-time projection coordinate point (x)pro,ypro) With the first coordinate point (x) of the advertisement image to be projectedcon,ycon) The included angle between the first vertical line and the first vertical line is the pitch angle α, and the included angle between the projection line of the first vertical line on the second coordinate system of the projection area and the X axis of the second coordinate system is the azimuth angle
In this embodiment, the method further includes:
determining the orientation of the advertisement image to be projected according to the first upper left corner A, the first upper right corner B, the first lower right corner C and the first lower left corner D of the area to be projected; the second upper left corner E, the second upper right corner F, the second lower right corner G and the second lower left corner H of the advertisement image to be projected correspond to the first upper left corner A, the first upper right corner B, the first lower right corner C and the first lower left corner D of the area to be projected one by one.
In this embodiment, the installation seat on which the film is installed is connected with a stepping motor through a gear, and the installation seat can rotate along with the rotation of the stepping motor.
In this embodiment, the light source of the advertisement projection lamp is an LED lamp.
The following is derived for the correlation formula of this embodiment:
as shown in fig. 3, the four corner coordinates of the projection area are: the first upper left corner coordinate A (x)A,yA) The first upper right corner coordinate B (x)B,yB) The first lower right corner coordinate C (x)C,yC) The first lower left corner coordinate D (x)D,yD);
Center coordinate (x)mid,ymid) And the first upper leftAngular coordinate A (x)A,yA) The first upper right corner coordinate B (x)B,yB) The first lower right corner coordinate C (x)C,yC) The first lower left corner coordinate D (x)D,yD) The following relationship is satisfied:
after simplification, the method can be obtained:
Meanwhile, the first coordinate rotation angle may be regarded as an included angle relationship between an abscissa axis of the negative plate itself and an abscissa axis of the projection area coordinate system, or may be regarded as an arctangent arctank of a slope k of the abscissa axis of the negative plate itself with respect to the abscissa axis of the projection area coordinate system;
as can be taken from fig. 4:
in addition, i.e. by judging the vectorWhen the direction is positive X-axis direction, theta is arctank, vectorWhen the orientation is in the X-axis negative direction, theta is arctank + pi; the following can be obtained:
as shown in fig. 1 to 4, in a second embodiment of the present invention, there is provided an internet of things based store advertisement projection lamp projection system, the system comprising: the system comprises a user terminal 100, a control terminal 200 and infrared scanning equipment; the user terminal 100 is in communication connection with the control terminal 200; the control terminal 200 includes:
an information transmitting module 210 for transmitting information of an advertisement image to be projected to the control terminal 200 in response to a first command transmitted by the user terminal 100; wherein the first command is for activating an advertisement projection lamp; the information of the advertisement image to be projected includes: advertisement content to be projected and first coordinate value (x) of advertisement image to be projectedcon,ycon) (ii) a The first coordinate value of the advertisement image to be projected refers to the coordinate of the advertisement image to be projected on a first coordinate system; the first coordinate system is a coordinate system where the negative film containing the advertisement image to be projected is located;
a film selecting module 220, configured to select a film including the information of the advertisement image to be projected according to the information of the advertisement image to be projected;
a position obtaining module 230, configured to send, to the control terminal 200, a position of the area to be projected in response to the infrared scanning device scanning and recognizing the negative film(ii) a Acquiring the actual coordinates of the area to be projected according to the position of the area to be projected; the actual coordinates include: first upper left corner coordinate A (x)A,yA) First upper right corner coordinate B (x)B,yB) The first lower right corner coordinate C (x)C,yC) First lower left corner coordinate D (x)D,yD);
A central coordinate solving module 240 for solving the central coordinate (u) of the area to be projected according to the actual coordinate of the area to be projectedmid,vmid) (ii) a Wherein u ismid、vmidSatisfies the following conditions:the above-mentionedThe above-mentioned
A rotation angle solving module 250, configured to solve a rotation angle θ, corresponding to the projection area, of the first coordinate system where the advertisement image to be projected is located according to the actual coordinates of the projection area; the angle of rotationThe above-mentioned
The projection module 260 is configured to rotate the advertisement image to be projected according to the rotation angle θ; according to the central coordinate (x) of the area to be projectedmid,ymid) A first coordinate value (x) of the advertisement image to be projectedcon,ycon) Projecting the rotated advertisement image to be projected to a real-time projection coordinate (x)pro,ypro) (ii) a The real-time projection coordinates satisfy: (x)pro,ypro)=(xmid+xcon,ymid+ycon)。
In this embodiment, the control terminal 200 further includes:
and a magnification adjustment module 270, configured to adjust a magnification of the advertisement image to be projected by adjusting the position of the negative film.
In this embodiment, the projection module 260 specifically includes:
an image rotating unit 260 for rotating the advertisement image to be projected according to the rotation angle θ;
a projection direction obtaining unit 262 for obtaining the real-time projection coordinates (x)pro,ypro) And a first coordinate value (x) of the advertisement image to be projectedcon,ycon) Obtaining the projection direction of the advertisement projection lamp, wherein the projection direction comprises a pitch angle α and an azimuth angleThe real-time projection coordinate point (x)pro,ypro) With the first coordinate point (x) of the advertisement image to be projectedcon,ycon) The included angle between the first vertical line and the first vertical line is the pitch angle α, and the included angle between the projection line of the first vertical line on the second coordinate system of the projection area and the X axis of the second coordinate system is the azimuth angle
A projection unit 263, configured to project the rotated advertisement image to be projected to the real-time projection coordinate (x) according to the projection directionpro,ypro)。
In this embodiment, the system further includes:
the advertisement image orientation identification module 300 is configured to determine an orientation of the advertisement image to be projected according to a first upper left corner a, a first upper right corner B, a first lower right corner C, and a first lower left corner D of the region to be projected; the second upper left corner E, the second upper right corner F, the second lower right corner G and the second lower left corner H of the advertisement image to be projected correspond to the first upper left corner A, the first upper right corner B, the first lower right corner C and the first lower left corner D of the area to be projected one by one.
In this embodiment, the installation seat on which the film is installed is connected with a stepping motor through a gear, and the installation seat can rotate along with the rotation of the stepping motor.
In this embodiment, the light source of the advertisement projection lamp is an LED lamp.
The following is derived for the correlation formula of this embodiment:
as shown in fig. 3, the four corner coordinates of the projection area are: the first upper left corner coordinate A (x)A,yA) The first upper right corner coordinate B (x)B,yB) The first lower right corner coordinate C (x)C,yC) The first lower left corner coordinate D (x)D,yD);
Center coordinate (x)mid,ymid) With the first upper left corner coordinate A (x)A,yA) The first upper right corner coordinate B (x)B,yB) The first lower right corner coordinate C (x)C,yC) The first lower left corner coordinate D (x)D,yD) The following relationship is satisfied:
after simplification, the method can be obtained:
Meanwhile, the first coordinate rotation angle may be regarded as an included angle θ relationship between the abscissa axis of the negative plate itself and the abscissa axis of the projection region coordinate system, or may be regarded as an arctangent of a slope k of the abscissa axis of the negative plate itself with respect to the abscissa axis of the projection region coordinate system;
as can be taken from fig. 4:
in addition, i.e. by judging the vectorWhen the direction is positive X-axis direction, theta is arctank, vectorWhen the orientation is in the X-axis negative direction, theta is arctank + pi; the following can be obtained:
Specific embodiments of the present invention have been described above in detail. It is to be understood that the specific embodiments of the present invention are not exclusive and that modifications and variations may be made by one of ordinary skill in the art in light of the spirit of the present invention, within the scope of the appended claims. Therefore, technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the embodiments of the present invention should be within the scope of protection defined by the claims.
Claims (6)
1. A shop advertisement projection lamp projection method based on the Internet of things is characterized by comprising the following steps:
step S1, responding to the first command sent by the user terminal, and sending information of the advertisement image to be projected to the control terminal; selecting a negative film containing the information of the advertisement image to be projected according to the information of the advertisement image to be projected; wherein the first command is for activating an advertisement projection lamp; the information of the advertisement image to be projected includes: advertisement content to be projected and first coordinate value (x) of advertisement image to be projectedcon,ycon) (ii) a The first coordinate value of the advertisement image to be projected refers to the coordinate of the advertisement image to be projected on a first coordinate system; the first coordinate system is a coordinate system where the negative film containing the advertisement image to be projected is located;
step S2, responding to the scanning and identification of the negative film by the infrared scanning equipment, and sending the position of the area to be projected to the control terminal; acquiring the actual coordinates of the area to be projected according to the position of the area to be projected; the actual coordinates include: first upper left corner coordinate A (x)A,yA) First upper right corner coordinate B (x)B,yB) The first lower right corner coordinate C (x)C,yC) First lower left corner coordinate D (x)D,yD);
Step S3, according to the actual coordinates of the to-be-projected area, the central coordinates (u) of the to-be-projected area are solvedmid,vmid) Solving a rotation angle theta of the first coordinate system where the advertisement image to be projected is located, which corresponds to the projection area; wherein u ismid、vmidSatisfies the following conditions:the above-mentionedThe above-mentionedThe angle of rotationThe above-mentioned
Step S4, according to the rotation angle theta, rotating the advertisement image to be projected; according to the central coordinate (x) of the area to be projectedmid,ymid) A first coordinate value (x) of the advertisement image to be projectedcon,ycon) Projecting the rotated advertisement image to be projected to a real-time projection coordinate (x)pro,ypro) (ii) a The real-time projection coordinates satisfy: (x)pro,ypro)=(xmid+xcon,ymid+ycon)。
2. The internet of things-based store advertisement projection lamp projection method as claimed in claim 1, further comprising adjusting the magnification of the advertisement image to be projected by adjusting the position of the negative.
3. The internet-of-things-based shop advertisement projection lamp projection method as claimed in claim 1, wherein the step S4 further includes:
from the real-time projection coordinates (x)pro,ypro) And a first coordinate value (x) of the advertisement image to be projectedcon,ycon) Obtaining the projection direction of the advertisement projection lamp, wherein the projection direction comprises a pitch angle α and an azimuth angleThe real-time projection coordinate point (x)pro,ypro) With the first coordinate point (x) of the advertisement image to be projectedcon,ycon) The included angle between the first vertical line and the first vertical line is the pitch angle α, and the included angle between the projection line of the first vertical line on the second coordinate system of the projection area and the X axis of the second coordinate system is the azimuth angle
4. The internet of things-based store advertisement projection lamp projection method as claimed in claim 1, wherein the method further comprises:
determining the orientation of the advertisement image to be projected according to the first upper left corner A, the first upper right corner B, the first lower right corner C and the first lower left corner D of the area to be projected; the second upper left corner E, the second upper right corner F, the second lower right corner G and the second lower left corner H of the advertisement image to be projected correspond to the first upper left corner A, the first upper right corner B, the first lower right corner C and the first lower left corner D of the area to be projected one by one.
5. The internet-of-things-based shop advertisement projection lamp projection method as claimed in claim 1, wherein a mounting seat provided with the negative plate is connected with a stepping motor through a gear, and the mounting seat can rotate along with the rotation of the stepping motor.
6. The internet of things-based shop advertisement projection lamp projection method as claimed in claim 1, wherein a light source of the advertisement projection lamp is an LED lamp.
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Application publication date: 20200623 |