CN114360418A - Projection system - Google Patents
Projection system Download PDFInfo
- Publication number
- CN114360418A CN114360418A CN202011099767.6A CN202011099767A CN114360418A CN 114360418 A CN114360418 A CN 114360418A CN 202011099767 A CN202011099767 A CN 202011099767A CN 114360418 A CN114360418 A CN 114360418A
- Authority
- CN
- China
- Prior art keywords
- projection
- image
- target
- dynamic
- control device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Projection Apparatus (AREA)
- Transforming Electric Information Into Light Information (AREA)
Abstract
An embodiment of the present invention provides a projection system, including: the projection device is used for projecting a projection image on the dynamic projection target, the image acquisition device is used for acquiring the projection image on the dynamic projection target, and the control device is used for comparing the acquired projection image with a preset projection target image and controlling the projection device to adjust the projected projection image according to the comparison result. According to the technical scheme, the image acquisition device is used for acquiring the projection image formed on the dynamic projection target, the control device is used for comparing the acquired projection image with a preset projection target image, and feedback is formed on the quality of the projection image, so that the self-adaptive adjustment of the projection device is realized, and the effect of the projection image on the dynamic projection target is ensured.
Description
Technical Field
The invention relates to the technical field of projection, in particular to a projection system.
Background
With the development of projection technology, projection devices are more and more widely used. In tourist attractions or urban squares, projection images are projected by projection equipment onto clouds, artificially-formed smoke curtains, waterfalls or other dynamically-changeable objects in the sky, so as to achieve the purpose of beautification.
However, for a dynamically changeable object such as a cloud layer in the sky, the thickness, shape, volume, or position of the object may change with the change of the external environment, and the object may have uncertainty, so that the image projected thereon may be distorted, and a predetermined projection image may not be formed.
Disclosure of Invention
The embodiment of the invention provides a projection system to solve the technical problem.
The projection system provided by the embodiment of the invention comprises: the device comprises a projection device, an image acquisition device and a control device; the projection device is used for projecting a projection image on the dynamic projection target; the image acquisition device is used for acquiring a projection image on the dynamic projection target; the control device is used for comparing the acquired projection image with a preset projection target image and controlling the projection device to adjust the projected projection image according to the comparison result.
In one embodiment, the dynamic projection target comprises a cloud, a flying object, a smoke screen, a water mist, a water screen, or a waterfall.
In one embodiment, the control device is used for comparing the definition of the acquired projection image with the definition of a preset projection target image and adjusting the focal length of the projection device according to the comparison result.
In one embodiment, the control device is used for comparing the brightness of the acquired projection image with the brightness of a preset projection target image and adjusting the brightness of the projection image projected by the projection device according to the comparison result.
In one embodiment, the control device is configured to compare the color of the acquired projection image with a predetermined color of the projection target image, and adjust the color of the projection image projected by the projection device according to the comparison result.
In one embodiment, the projection system further includes a distance detection device for detecting a distance between the projection device and the dynamic projection target, and the control device is further configured to control the projection device to adjust the projected image according to the distance between the projection device and the dynamic projection target.
In an embodiment, the projection system further includes a detection device configured to detect spatial position information of the dynamic projection target, and the control device is further configured to control the projection device to adjust a direction and/or an angle of the projected projection image according to the spatial position information of the dynamic projection target.
In one embodiment, the projection device comprises a plurality of projection devices, each projection device projects a sub-projection image, and the projection image is formed by splicing or superposing a plurality of sub-projection images.
In one embodiment, the control means generates a predetermined projection target image based on the distance of the projection means from the dynamic projection target, the type of the dynamic projection target, and the image to be projected.
In one embodiment, the control device is configured to divide the acquired projection image and the predetermined projection target image into a plurality of corresponding regions, and control the projection device to adjust the relative region of the projection image according to the comparison result of each region.
An embodiment of the present invention provides a projection system, including: the projection device is used for projecting a projection image on the dynamic projection target, the image acquisition device is used for acquiring the projection image on the dynamic projection target, and the control device is used for comparing the acquired projection image with a preset projection target image and controlling the projection device to adjust the projected projection image according to the comparison result. According to the technical scheme, the image acquisition device is used for acquiring the projection image formed on the dynamic projection target, the control device is used for comparing the acquired projection image with a preset projection target image, and feedback is formed on the quality of the projection image, so that the self-adaptive adjustment of the projection device is realized, and the effect of the projection image on the dynamic projection target is ensured.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a block diagram of a projection system according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a projection system according to an embodiment of the present invention.
Detailed Description
In order to make the technical solution of the present invention better understood, the technical solution of the embodiment of the present invention will be clearly and completely described below with reference to the attached drawings. It is to be understood that the described embodiments are merely exemplary of some, and not necessarily all, embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without making creative efforts based on the embodiments of the present invention, belong to the protection scope of the present invention.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
Referring to fig. 1, fig. 1 is a block diagram of a projection system 100 according to an embodiment of the invention. The projection system 100 comprises a projection device 110, an image acquisition device 120 and a control device 130.
The projection device 110 is used for projecting a projection image on the dynamic projection target, the image acquisition device 120 is used for acquiring the projection image on the dynamic projection target, and the control device 130 is used for comparing the acquired projection image with a preset projection target image and controlling the projection device to adjust the projected projection image according to the comparison result.
Specifically, the projection device 110 includes a light source unit, a light modulation unit, and a projection lens. The light source unit emits illumination light, and the light source unit may be a laser light source, a laser fluorescent light source, an ultra-high pressure mercury lamp, or the like, so that the light source unit emits illumination light with high brightness. The light modulation unit is configured to modulate the illumination light according to the image to be projected, and form projection light with image information. The image to be projected may be a text, an icon, a picture, a video, a slide, or the like, and the light modulation portion includes, but is not limited to, a Digital Micro-mirror Device (DMD), a Liquid Crystal Display (LCD) panel, or a Liquid Crystal On Silicon (LCOS). The projection lens is used for projecting the projection light with the image information to the dynamic projection target so as to form a projection image on the dynamic projection target.
The dynamic projection target is an object with a dynamically changeable shape such as reflectivity, thickness, shape, volume or position, for example, the dynamic projection target may include a cloud layer, a flying object, a smoke screen, a water mist, a water curtain or a waterfall. In one embodiment, as shown in fig. 2, the dynamic projection target is a cloud layer in the sky, and the projection light emitted from the projection device 110 is projected onto the cloud layer to form a projection image, so that people at a distance can observe the projection image formed on the cloud layer due to the reflectivity of the cloud layer. Unlike a conventional projection screen or a building, since the form of the cloud layer may vary with weather conditions (wind, temperature, etc.), with uncertainty, the projected image projected thereon may be deformed, thereby affecting the display effect of the projected image.
The image capturing device 120 is used to capture the projection images formed on the dynamic projection target. The image capturing device 120 may be a camera device, and obtains a projection image formed on the dynamic projection target by shooting. The image capturing device 120 may be a stand-alone image capturing device, or may be an image capturing device integrated with the projection device 110, and is not limited in this respect. Preferably, the image capturing device 120 captures the projection images formed on the dynamic projection target at a preset time interval, and since the form of the dynamic projection target may change with time, the projection images formed on the dynamic projection target may be captured at the preset time interval, so that the deformation of the projection images on the dynamic projection target may be discovered in time. The preset time interval may be determined according to specific conditions, and for a dynamic projection target with a fast form change, the preset time interval may be set to be smaller, for example, the preset time interval is set to be 1 second, and for a dynamic projection target with a slow form change, the preset time interval may be set to be larger, for example, the preset time interval is set to be 20 seconds.
The control device 130 is configured to receive the projection image acquired by the image acquisition device 120, compare the acquired projection image with a predetermined projection target image, and control the projection device 110 to adjust the projected projection image according to the comparison result. The control device 130 may be provided independently, or may be integrated in the projection device 110, and is not limited in this respect. The control means 130 generates a predetermined projection target image according to the distance between the projection means 110 and the dynamic projection target, the type of the dynamic projection target, and the image to be projected, the distance between the projection means 110 and the dynamic projection target may be measured by the distance detection means, the type of the dynamic projection target may be divided by different categories, and further, each category may be divided in detail according to parameters (such as reflectivity, thickness, shape, volume, etc.) related to projection imaging to determine.
For example, in one embodiment, the control device 130 is configured to compare the sharpness of the acquired projection image with the sharpness of a predetermined projection target image, and when the difference between the two sharpness values is greater than a threshold value, the control device 130 adjusts the focal length of the projection device according to the comparison result, so as to form a sharp projection image on the dynamic projection target.
In yet another embodiment, the control device 130 is configured to compare the brightness of the captured projection image with the brightness of a predetermined projection target image, and when the difference between the two brightness values is greater than a threshold value, the control device 130 adjusts the brightness of the projection image projected by the projection device according to the comparison result, so as to form a projection image with a brightness meeting the requirement on the dynamic projection target.
In another embodiment, the control device 130 is configured to compare the color of the captured projection image with the color of a predetermined projection target image, and when the difference between the two colors is greater than a threshold, the control device 130 adjusts the color of the projection image projected by the projection device according to the comparison result, so as to form a projection image with a color meeting the requirement on the dynamic projection target.
In the above embodiment, the control device 130 is configured to compare the sharpness, brightness, and color of the acquired projection image and the predetermined projection target image, respectively, and it is understood that the control device 130 may also compare two or three of the acquired projection image and adjust two or three of the acquired projection image simultaneously, so as to improve the projection effect on the dynamic projection target.
For the dynamic projection target, the position of the dynamic projection target may change, for example, a cloud layer in the sky, and the position of the dynamic projection target may change with the influence of weather conditions such as wind power, temperature, and the like, so that the distance between the projection device 110 and the dynamic projection target changes, and the projection image projected onto the dynamic projection target is deformed. It is understood that when the projection system 100 is provided with the distance detection means, the control means 130 may compare the sharpness, brightness or color of the captured projection image with a predetermined projection target image, and adjust the projection image, thereby improving the display effect of the projection image formed on the dynamic projection target.
The projection system 100 provided with the distance detection device can solve the problem of projection image deformation caused by the change of the distance between the projection device 110 and the dynamic projection target, but when the dynamic projection target moves transversely relative to the projection device, part or all of the dynamic projection target may shift the projection range of the projection device 110, so that the projection image is incomplete or cannot be formed. In order to solve the above problem, in an embodiment, the projection system 100 further includes a detection device, which may be a radar or a camera device, the detection device is configured to detect spatial position information of the dynamic projection target, and the control device 130 is further configured to control the projection device 110 to adjust a direction and/or an angle of the projected projection image according to the spatial position information of the dynamic projection target, so that the projection image projected by the projection device 110 is completely formed on the dynamic projection target.
In one embodiment, the number of the projection devices 110 is multiple, each projection device 110 projects a sub-projection image, the projection image formed on the dynamic projection target can be formed by splicing multiple sub-projection images, and the arrangement can increase the area of the projection image; alternatively, the projection image formed on the dynamic projection target may be superimposed by a plurality of sub-projection images, and thus the brightness of the projection image may be increased.
In one embodiment, the control device 130 is configured to divide the acquired projection image and the predetermined projection target image into a plurality of corresponding regions, and compare the sharpness, brightness or color of the acquired projection image and the predetermined projection target image of each region, respectively, and the control device 130 controls the projection device 110 to adjust the relative region of the projection image according to the comparison result of each region. According to the embodiment, the acquired projection image and the preset projection target image are divided into the plurality of corresponding areas, and the projection image can be accurately adjusted by adjusting the areas, so that the display effect of the projection image formed on the dynamic projection target is further improved.
The embodiment of the invention provides a projection system 100, comprising: the projection device 110 is used for projecting a projection image on a dynamic projection target, the image acquisition device 120 is used for acquiring the projection image on the dynamic projection target, and the control device 130 is used for comparing the acquired projection image with a preset projection target image and controlling the projection device to adjust the projected projection image according to the comparison result. According to the technical scheme, the image acquisition device is used for acquiring the projection image formed on the dynamic projection target, the control device is used for comparing the acquired projection image with a preset projection target image, and feedback is formed on the quality of the projection image, so that the self-adaptive adjustment of the projection device is realized, and the effect of the projection image on the dynamic projection target is ensured.
The above embodiments are only for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may be modified or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention.
Claims (10)
1. A projection system, comprising:
a projection device for projecting a projection image on a dynamic projection target;
the image acquisition device is used for acquiring a projection image on the dynamic projection target;
and the control device is used for comparing the acquired projection image with a preset projection target image and controlling the projection device to adjust the projected projection image according to the comparison result.
2. The projection system of claim 1, wherein the dynamic projection target comprises a cloud, a flying object, a smoke screen, a water mist, a water screen, or a waterfall.
3. The projection system of claim 1, wherein the control device is configured to compare a resolution of the captured projection image with a predetermined resolution of the projection target image, and adjust a focal length of the projection device according to the comparison result.
4. The projection system of claim 1, wherein the control device is configured to compare the brightness of the captured projection image with a predetermined brightness of the projection target image, and to adjust the brightness of the projection image projected by the projection device according to the comparison result.
5. The projection system of claim 1, wherein the control device is configured to compare the color of the captured projection image with a predetermined color of the projection target image, and to adjust the color of the projection image projected by the projection device according to the comparison result.
6. The projection system of claim 1, further comprising a distance detection device configured to detect a distance between the projection device and the dynamic projection target, wherein the control device is further configured to control the projection device to adjust the projected image according to the distance between the projection device and the dynamic projection target.
7. The projection system of claim 1, further comprising a detection device for detecting spatial position information of the dynamic projection target, wherein the control device is further configured to control the projection device to adjust the direction and/or angle of the projected projection image according to the spatial position information of the dynamic projection target.
8. The projection system of claim 1, wherein the projection device comprises a plurality of projection devices, each projection device projects a sub-projection image, and the projection image is formed by splicing or superposing a plurality of sub-projection images.
9. The projection system of claim 1, wherein the control device is configured to generate the predetermined projection target image based on a distance between the projection device and the dynamic projection target, a type of the dynamic projection target, and an image to be projected.
10. The projection system of any one of claims 1 to 9, wherein the control device is configured to divide the acquired projection image and the predetermined projection target image into a plurality of corresponding regions, and to control the projection device to adjust the relative regions of the projection image according to the comparison result of the regions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011099767.6A CN114360418A (en) | 2020-10-13 | 2020-10-13 | Projection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011099767.6A CN114360418A (en) | 2020-10-13 | 2020-10-13 | Projection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114360418A true CN114360418A (en) | 2022-04-15 |
Family
ID=81090212
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011099767.6A Pending CN114360418A (en) | 2020-10-13 | 2020-10-13 | Projection system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114360418A (en) |
-
2020
- 2020-10-13 CN CN202011099767.6A patent/CN114360418A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6770407B2 (en) | How to display an image | |
| RU2577533C1 (en) | Image processing device, projector and projector control method | |
| US10672349B2 (en) | Device for project an image | |
| EP3136377B1 (en) | Information processing device, information processing method, program | |
| WO2022206527A1 (en) | Method for projection image correction and laser projection device | |
| TW201602556A (en) | Camera shooting method achieved through camera shooting elements | |
| US20170339382A1 (en) | Projector | |
| US9568811B2 (en) | Projector and projection image control method | |
| JP2008022551A (en) | System, method and video projector for automatically correcting image before projection | |
| US10652477B2 (en) | Night vision imaging apparatus | |
| KR101767853B1 (en) | Information processing device, image projecting system, and computer program | |
| CN108718404B (en) | Image correction method and image correction system | |
| CN113259637B (en) | Projection image correction method and laser projection system | |
| JP6182739B2 (en) | Projection apparatus and projection method | |
| US10757381B2 (en) | Image projection apparatus and its control method | |
| CN114360418A (en) | Projection system | |
| EP3968632A1 (en) | System and method for projector alignment using detected image features | |
| KR20150072528A (en) | Curved display device and display method using the same | |
| JP2010130481A (en) | Image projection apparatus | |
| US10110865B2 (en) | Lighting device, lighting system, and program | |
| JP6642032B2 (en) | Projector and projector control method | |
| JP7194834B2 (en) | Control device, projection device, control method, and control program | |
| WO2024001922A1 (en) | Rojection image source correction method and ultra-short throw projection device | |
| WO2023115857A1 (en) | Laser projection device, and projection image correction method | |
| WO2023116393A1 (en) | Focusing method for projection device and projection device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |