CN110764342A - Intelligent projection display device and adjustment method of projection picture thereof - Google Patents
Intelligent projection display device and adjustment method of projection picture thereof Download PDFInfo
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- CN110764342A CN110764342A CN201911135513.2A CN201911135513A CN110764342A CN 110764342 A CN110764342 A CN 110764342A CN 201911135513 A CN201911135513 A CN 201911135513A CN 110764342 A CN110764342 A CN 110764342A
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- user
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/142—Adjusting of projection optics
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B17/00—Details of cameras or camera bodies; Accessories therefor
- G03B17/48—Details of cameras or camera bodies; Accessories therefor adapted for combination with other photographic or optical apparatus
- G03B17/54—Details of cameras or camera bodies; Accessories therefor adapted for combination with other photographic or optical apparatus with projector
Abstract
The invention discloses an intelligent projection display device, comprising: a photographing unit disposed toward a user, for photographing a user picture; the image processing unit is used for receiving the user picture shot by the shooting unit, analyzing and processing the user picture, analyzing the sight line center of the user, comparing the sight line center with the center point of the current projection picture, and calculating the deviation of the sight line center of the user with the center point of the current projection picture in the horizontal direction and the vertical direction; and the lens shifting unit is used for moving the lens up and down and left and right under the condition of ensuring the completeness of the projection picture according to the deviation of the sight center of the user and the horizontal direction and the vertical direction of the center point of the current projection picture, so that the sight center of the user is superposed with the center point of the current projection picture. The invention also discloses an adjusting method of the projection picture of the intelligent projection display device, which can automatically adjust the position of the projection picture, so that the center of the projection picture and the center of the sight of the user are overlapped as much as possible, and the visual experience of the user is improved.
Description
Technical Field
The invention relates to the technical field of projection display, in particular to an intelligent projection display device and a method for adjusting a projection picture thereof.
Background
Projection has been widely used in general homes, office meeting rooms, educational institutions, entertainment venues, and the like.
When the user uses the projection equipment, the sight line center of the user is the best to be consistent with the center of the projection picture. In general, the position of the projected picture relative to the projection device depends primarily on the relative position of the light valve and the lens, i.e., the horizontal offset and the vertical offset. The lens of the common projection equipment is fixed and not adjustable, and the position of the projection equipment needs to be adjusted to coincide with the center of the sight of a user; when the projection equipment with the lens displacement function is used, the current application needs to be quitted first when the position of a projection picture needs to be adjusted every time, and the user experience is influenced.
Disclosure of Invention
In order to solve the problems in the prior art, the invention aims to provide an intelligent projection display device and a method for adjusting a projection picture thereof.
In order to achieve the purpose, the invention adopts the technical scheme that: an intelligent projection display device comprising:
a photographing unit disposed toward a user, for photographing a user picture;
the image processing unit is used for receiving the user picture shot by the shooting unit, analyzing and processing the user picture, analyzing the sight line center of the user, comparing the sight line center with the center point of the current projection picture, and calculating the deviation of the sight line center of the user with the center point of the current projection picture in the horizontal direction and the vertical direction;
and the lens shifting unit is used for moving the lens up and down and left and right under the condition of ensuring the completeness of the projection picture according to the deviation of the sight center of the user and the horizontal direction and the vertical direction of the center point of the current projection picture, so that the sight center of the user is superposed with the center point of the current projection picture.
In a preferred embodiment, the image processing unit is further configured to analyze the number of current users and the center of sight of each user, and when there are multiple users in the captured user picture, the height of the projection picture is based on an average height of the heights of the sight of the multiple users, and the left and right positions of the projection picture are based on the left and right uniform distribution of the users.
As another preferred embodiment, the image processing unit is a DSP chip.
In another preferred embodiment, the shooting unit is a camera with a usb interface, and is built in the rear of the projection device.
As another preferred embodiment, the projection device is a front projector.
In another preferred embodiment, the maximum value of the lens moving up and down of the lens shifting unit is 30% of the width of the complete projection screen, and the maximum value of the lens moving left and right of the lens shifting unit is 20% of the length of the complete projection screen.
The invention also provides a method for adjusting the projection picture of the intelligent projection display device, which comprises the following steps:
s10, setting the shooting unit towards the user and shooting the user picture;
s20, the image processing unit periodically receives the user picture shot by the shooting unit and carries out image analysis processing on the user picture, the sight line center of the user is analyzed and compared with the center point of the current projection picture, and the deviation of the sight line center of the user and the center point of the current projection picture in the horizontal direction and the vertical direction is calculated;
and S30, the lens shifting unit moves the lens up and down, left and right under the condition of ensuring the integrity of the projection picture according to the horizontal direction and vertical direction deviation of the sight line center of the user and the center point of the current projection picture, so that the sight line center of the user is superposed with the center point of the current projection picture.
As a preferred embodiment, the step S20 further includes: the image processing unit further analyzes the number of the current users and the sight line center of each user, when a plurality of users exist in the shot user picture, the height of the projection picture is based on the average height of the sight line heights of the users, and the left position and the right position of the projection picture are based on the left position and the right position of the users which are evenly distributed.
As another preferred embodiment, in step S20, when only one user is in the captured user picture, the image processing unit finds out the coordinates of the center point of the user' S sight line, and performs subtraction operation with the coordinates of the reference point to calculate the up-down deviation X and the left-right deviation Y, and if X >0, the image processing unit controls the lens shifting unit to shift the lens upward; if X <0, the image processing unit controls the lens shifting unit to shift the lens downwards; if Y is greater than 0, the image processing unit controls the lens shifting unit to move the lens rightwards; if Y is less than 0, the image processing unit controls the lens shifting unit to shift the lens to the left.
The invention has the beneficial effects that:
the invention collects the user picture in real time and identifies the user sight center in the working process, adjusts the lens position by taking the user picture as a reference, realizes that the center of the projection picture and the user sight center are overlapped as much as possible, and has convenient use, simple system and reliable performance.
Drawings
FIG. 1 is a block diagram of an intelligent projection display device according to an embodiment of the present invention;
fig. 2 is a schematic view of a usage scenario in an embodiment of the present invention.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
Examples
As shown in fig. 1 and 2, an intelligent projection display device includes an image processing unit, a shooting unit, a lens shifting unit, and other units necessary for projection display:
the shooting unit is arranged towards a user and used for shooting a user picture and sending the user picture to the image processing unit;
the image processing unit is used for receiving the user picture shot by the shooting unit, analyzing and processing the user picture, analyzing the sight line center of the user, comparing the sight line center with the center point of the current projection picture, and calculating the deviation of the sight line center of the user with the center point of the current projection picture in the horizontal direction and the vertical direction;
and the lens shifting unit is used for moving the lens up and down and left and right under the condition of ensuring the completeness of the projection picture according to the deviation of the sight center of the user and the horizontal direction and the vertical direction of the central point of the current projection picture, so that the sight center of the user is superposed with the central point of the current projection picture, and when the central axis of the lens is superposed with the central axis of the light valve, the sight center of the user in the image shot by the shooting unit is basically superposed with the projection picture, and the sight center of the user in the image shot by the.
The image processing unit is further used for analyzing the number of the current users and the sight line center of each user according to the user pictures shot by the shooting unit, when a plurality of users exist in the shot user pictures, the height of the projection picture takes the average height of the sight line heights of the majority of users as a reference, and the left position and the right position of the projection picture take the left position and the right position of the users as a reference.
In this embodiment, the image processing unit is specifically a DSP chip, the shooting unit is a camera of a usb interface, and is placed in the rear of the projection apparatus, and the projection apparatus is a front projector.
The maximum value of the lens moving unit for moving the lens up and down is 30% of the width of the complete projection picture, and the maximum value of the lens moving unit for moving the lens left and right is 20% of the length of the complete projection picture.
The embodiment further provides a method for adjusting the projection picture of the intelligent projection display device, which includes the following steps:
s10, setting the shooting unit towards the user and shooting the user picture;
s20, the image processing unit periodically receives the user picture shot by the shooting unit and carries out image analysis processing on the user picture, the sight line center of the user is analyzed and compared with the center point of the current projection picture, and the deviation of the sight line center of the user and the center point of the current projection picture in the horizontal direction and the vertical direction is calculated; the image processing unit further analyzes the number of the current users and the sight line center of each user, when a plurality of users exist in the shot user picture, the height of the projection picture is based on the average height of the sight line heights of the users, and the left position and the right position of the projection picture are based on the left position and the right position of the users which are evenly distributed. When only one user exists in the shot user picture, the image processing unit finds out the coordinates of the sight center point of the user, performs subtraction operation with the coordinates of the reference point, calculates the vertical deviation X and the left-right deviation Y, and controls the lens shifting unit to shift the lens upwards if X is greater than 0; if X <0, the image processing unit controls the lens shifting unit to shift the lens downwards; if Y is greater than 0, the image processing unit controls the lens shifting unit to move the lens rightwards; if Y is less than 0, the image processing unit controls the lens shifting unit to shift the lens to the left.
And S30, the lens shifting unit moves the lens up and down, left and right under the condition of ensuring the integrity of the projection picture according to the horizontal direction and vertical direction deviation of the sight line center of the user and the center point of the current projection picture, so that the sight line center of the user is superposed with the center point of the current projection picture.
The above-mentioned embodiments only express the specific embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.
Claims (9)
1. An intelligent projection display device, comprising:
a photographing unit disposed toward a user, for photographing a user picture;
the image processing unit is used for receiving the user picture shot by the shooting unit, analyzing and processing the user picture, analyzing the sight line center of the user, comparing the sight line center with the center point of the current projection picture, and calculating the deviation of the sight line center of the user with the center point of the current projection picture in the horizontal direction and the vertical direction;
and the lens shifting unit is used for moving the lens up and down and left and right under the condition of ensuring the completeness of the projection picture according to the deviation of the sight center of the user and the horizontal direction and the vertical direction of the center point of the current projection picture, so that the sight center of the user is superposed with the center point of the current projection picture.
2. The intelligent projection display device of claim 1, wherein the image processing unit is further configured to analyze the current number of users and the center of sight of each user, and when there are multiple users in the captured user image, the height of the projection image is based on the average height of the heights of the sight of the multiple users, and the left and right positions of the projection image are based on the left and right uniform distribution of the users.
3. The intelligent projection display device of claim 1, wherein the image processing unit is a DSP chip.
4. The intelligent projection display device according to claim 1, wherein the shooting unit is a camera of a usb interface, and is built in the rear of the projection equipment.
5. The intelligent projection display of claim 4, wherein the projection device is a front projector.
6. The intelligent projection display device according to claim 1, wherein the maximum value of the lens moving up and down of the lens shifting unit is 30% of the width of the complete projection picture, and the maximum value of the lens moving left and right of the lens shifting unit is 20% of the length of the complete projection picture.
7. The method for adjusting the projection picture of the intelligent projection display device according to any one of claims 1 to 6, comprising the following steps:
s10, setting the shooting unit towards the user and shooting the user picture;
s20, the image processing unit periodically receives the user picture shot by the shooting unit and carries out image analysis processing on the user picture, the sight line center of the user is analyzed and compared with the center point of the current projection picture, and the deviation of the sight line center of the user and the center point of the current projection picture in the horizontal direction and the vertical direction is calculated;
and S30, the lens shifting unit moves the lens up and down, left and right under the condition of ensuring the integrity of the projection picture according to the horizontal direction and vertical direction deviation of the sight line center of the user and the center point of the current projection picture, so that the sight line center of the user is superposed with the center point of the current projection picture.
8. The method for adjusting a projection screen of an intelligent projection display device according to claim 7, wherein the step S20 further comprises: the image processing unit further analyzes the number of the current users and the sight line center of each user, when a plurality of users exist in the shot user picture, the height of the projection picture is based on the average height of the sight line heights of the users, and the left position and the right position of the projection picture are based on the left position and the right position of the users which are evenly distributed.
9. The method as claimed in claim 8, wherein in step S20, when there is only one user in the captured user picture, the image processing unit finds the coordinates of the center point of the user' S sight line and performs a subtraction operation with the coordinates of the reference point to calculate the up-down deviation X and the left-right deviation Y, and if X >0, the image processing unit controls the lens shifting unit to shift the lens upward; if X <0, the image processing unit controls the lens shifting unit to shift the lens downwards; if Y is greater than 0, the image processing unit controls the lens shifting unit to move the lens rightwards; if Y is less than 0, the image processing unit controls the lens shifting unit to shift the lens to the left.
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| CN201911135513.2A CN110764342A (en) | 2019-11-19 | 2019-11-19 | Intelligent projection display device and adjustment method of projection picture thereof |
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| CN201911135513.2A CN110764342A (en) | 2019-11-19 | 2019-11-19 | Intelligent projection display device and adjustment method of projection picture thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112904653A (en) * | 2021-01-26 | 2021-06-04 | 四川长虹电器股份有限公司 | Focusing method and focusing device for projection equipment |
| CN113075851A (en) * | 2021-04-02 | 2021-07-06 | 江苏吉祥星智能科技有限公司 | Suspended projector, control method thereof and readable storage medium |
| CN113671997A (en) * | 2021-08-17 | 2021-11-19 | 深圳市火乐科技发展有限公司 | Projection equipment control method, correction method, remote control device and projection equipment |
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