CN110611800B - Projection adjusting method and device, projector and projection system - Google Patents
Projection adjusting method and device, projector and projection system Download PDFInfo
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- CN110611800B CN110611800B CN201910933173.1A CN201910933173A CN110611800B CN 110611800 B CN110611800 B CN 110611800B CN 201910933173 A CN201910933173 A CN 201910933173A CN 110611800 B CN110611800 B CN 110611800B
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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]
- H04N9/3141—Constructional details thereof
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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
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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
- H04N9/3182—Colour adjustment, e.g. white balance, shading or gamut
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Abstract
The invention discloses a projection adjusting method, a device, a projector and a system, wherein the projection adjusting method comprises the steps of acquiring light intensity information of a current projection environment, extracting a corresponding preset projection parameter key value after acquiring a corresponding projection mode according to the light intensity information, acquiring a corresponding brightness value parameter and/or white balance value parameter and/or contrast key value parameter and/or saturation value parameter according to the preset projection parameter key value, and finally adjusting a current projection image according to the acquired parameter; the problem that in the prior art, the projector only adjusts one parameter of projection brightness, and as for the projection effect, the brightness at different gears has color deviation, and the higher and higher requirements of users are difficult to meet is solved; the projection adjusting method is self-adaptive, accurate and good in user experience.
Description
Technical Field
The invention relates to the technical field of projection, in particular to a projection adjusting method and device, a projector and a projection system.
Background
With the continuous development of projection technology, various types of conferences, lectures, performances and other activities adopt the projection technology, so that participants can express the contents to be displayed or obtain the projected contents easily and in a time-saving manner, and great convenience is provided for the work, entertainment and other aspects of people. However, due to the influence of the light intensity of the field projection environment, the projection effect is often not ideal, and the user cannot clearly or easily acquire the projection content, which results in poor use experience of the user.
Aiming at the situation, a plurality of brightness gears are preset in an adjusting menu of the projector for the user to select by himself, the user can manually adjust according to the field environment, or the device is used for collecting ambient light for automatic brightness adjustment, however, the above two adjusting modes are all changes of a parameter of projection brightness of the projector, for the projection effect, only changing one parameter of the brightness can cause the white balance of the projector light machine to change, further color deviation occurs in the brightness of different gears, and the requirement of the user for increasing height is difficult to meet. Therefore, how to solve the problem that the projector can adaptively change the parameters of the projector when performing projection and meet the high-demand projection effect of the user becomes a problem to be overcome.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. Therefore, the invention aims to provide an adaptive and accurate projection adjusting method with good user experience.
The technical scheme adopted by the invention is as follows:
in a first aspect, the present invention provides a projection adjusting method, which includes:
acquiring light intensity information of a current projection environment;
acquiring a corresponding projection mode according to the light intensity information;
extracting a preset projection parameter key value corresponding to the projection mode;
acquiring a corresponding brightness value parameter and/or a white balance value parameter and/or a picture contrast value parameter and/or a picture saturation value parameter according to the preset projection parameter key value;
and adjusting the current projection image according to the brightness value parameter and/or the white balance value parameter and/or the picture contrast value parameter and/or the picture saturation value parameter.
Further, the preset projection parameter key value comprises a brightness parameter key value.
Further, anti-jitter processing is also included before the corresponding projection mode is obtained according to the light intensity information; the anti-jitter processing includes:
judging whether the times of acquiring the light intensity information is greater than the preset sampling times or not;
if yes, calculating a current light intensity weighted average value of the plurality of light intensity information;
if not, delaying for a preset time and continuing to acquire the light intensity information until the acquisition times are greater than the preset sampling times;
comparing the current light intensity weighted average value with a historical light intensity weighted average value to obtain a comparison value, or comparing the historical light intensity weighted average value with the current light intensity weighted average value to obtain the comparison value;
judging whether the contrast value is larger than a preset threshold value or not;
if yes, acquiring the corresponding projection mode according to the current light intensity weighted average value, and storing the current light intensity weighted average value to cover the historical light intensity weighted average value;
if not, returning to continuously execute the light intensity information acquisition.
In a second aspect, the present invention provides a projection adjusting apparatus, comprising:
the environment information acquisition module is used for acquiring light intensity information of the current projection environment;
the selection module is used for acquiring a corresponding projection mode according to the light intensity information;
the preset projection parameter key value acquisition module is used for extracting a preset projection parameter key value corresponding to the projection mode;
the parameter acquisition module is used for acquiring a corresponding brightness value parameter and/or a white balance value and/or a picture contrast value and/or a picture saturation value according to the preset projection parameter key value;
and the parameter adjusting module is used for adjusting the current projection image according to the brightness value parameter and/or the white balance value and/or the picture contrast value and/or the picture saturation value.
Further, the projection adjusting device further includes an anti-shake processing module, an output end of the environment information obtaining module is connected to an input end of the anti-shake processing module, an output end of the anti-shake processing module is connected to an output end of the selecting module, and the anti-shake processing module includes:
the sampling frequency judging unit is used for judging whether the frequency of acquiring the light intensity information is greater than the preset sampling frequency or not; if yes, calculating a current light intensity weighted average value of the plurality of light intensity information; if not, delaying for a preset time and continuing to acquire the light intensity information until the acquisition times are greater than the preset sampling times;
the comparison value calculation unit is used for comparing the current light intensity weighted average value with a historical light intensity weighted average value to obtain a comparison value, or comparing the historical light intensity weighted average value with the current light intensity weighted average value to obtain the comparison value;
the projection mode output unit is used for judging whether the contrast value is larger than a preset threshold value or not; if yes, acquiring the corresponding projection mode according to the current light intensity weighted average value, and storing the current light intensity weighted average value to cover the historical light intensity weighted average value; if not, returning to continuously execute the light intensity information acquisition.
In a third aspect, the present invention provides a projector comprising: the system comprises an optical sensor, an optical machine and a main control module;
the optical sensor is used for acquiring light intensity information of the current projection environment and transmitting the light intensity information to the main control module;
the main control module executes the projection adjusting method and outputs a control signal to the optical machine so as to control the work of the optical machine.
In a fourth aspect, the present invention provides a projection system comprising an image source device, a projection screen and said projector;
the image source device is connected with the projector and transmits an image to be projected to the optical machine;
the light sensor acquires light intensity information of a current projection environment and transmits the light intensity information to the main control module;
the main control module outputs a control signal to the light machine according to the light intensity information, and then controls the light machine to project the image to the projection screen.
In a fifth aspect, the present invention provides a projection adjustment control apparatus, comprising:
at least one processor; and a memory communicatively coupled to the at least one processor;
wherein the processor is configured to execute the projection adjusting method by calling a computer program stored in the memory.
In a sixth aspect, the present invention provides a computer-readable storage medium storing computer-executable instructions for causing a computer to execute the projection adjusting method.
The invention has the beneficial effects that:
the invention relates to a projection adjusting method, which comprises the steps of obtaining light intensity information of a current projection environment, obtaining a corresponding projection mode according to the light intensity information, extracting a corresponding preset projection parameter key value, obtaining a corresponding brightness value parameter and/or white balance value parameter and/or contrast key value parameter and/or saturation value parameter according to the preset projection parameter key value, and finally adjusting a current projection image according to the obtained parameters; the problem that in the prior art, the projector only adjusts one parameter of projection brightness, and as for the projection effect, the brightness at different gears has color deviation, and the higher and higher requirements of users are difficult to meet is solved; the projection adjusting method is self-adaptive, accurate and good in user experience.
Drawings
FIG. 1 is a flow chart of an embodiment of a projection adjustment method of the present invention;
FIG. 2 is a flowchart illustrating an embodiment of anti-jitter processing in a projection adjustment method according to the present invention;
FIG. 3 is a block diagram of a projection adjusting apparatus according to an embodiment of the present invention;
FIG. 4 is a block diagram of an embodiment of an anti-jitter processing module in a projection adjusting apparatus according to the present invention;
FIG. 5 is a block diagram of a projector according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of a projection system according to an embodiment of the present invention;
FIG. 7 is a schematic diagram of a projection system according to another embodiment of the present invention.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
The first embodiment is as follows:
referring to fig. 1, an embodiment of the present invention provides a projection adjusting method, which includes:
s10, acquiring light intensity information of the current projection environment; the light intensity information of the current projection environment can be acquired through the light sensors, for better coping with different application scenes, more light sensors can be set according to actual demands to acquire the current light intensity information, and the accuracy of acquiring the light intensity information is improved.
S20, acquiring a corresponding projection mode according to the light intensity information; after the light intensity information is acquired, the stored projection modes corresponding to different light intensity information are acquired according to the light intensity information, and the light intensity information corresponding to different projection modes with a plurality of different projection modes is set. For example, the light intensity information may be set to correspond to one projection mode in the preset light intensity interval, and then the plurality of preset light intensity intervals correspond to one projection mode one by one.
S30, extracting a preset projection parameter key value corresponding to the projection mode; wherein, the preset projection parameter key value can be set as a brightness parameter key value.
S40, acquiring a corresponding brightness value parameter and/or white balance value parameter and/or picture contrast value parameter and/or picture saturation value parameter according to a preset projection parameter key value; specifically, in an embodiment in which the key value of the projection parameter is preset as the key value of the brightness parameter, the brightness parameter is obtained according to the key value of the brightness parameter, and the optimal white balance value parameter and/or the picture contrast value parameter and/or the picture saturation value parameter corresponding to the brightness parameter are obtained, the optimal white balance value parameter and/or the picture contrast value parameter and/or the picture saturation value parameter corresponding to the brightness parameter can be stored correspondingly after passing multiple projection tests in advance, and when the brightness parameter is obtained, the optimal white balance value parameter and/or the picture contrast value parameter and/or the picture saturation value parameter under the brightness parameter can be called correspondingly.
S50, adjusting the current projection image according to the brightness value parameter and/or the white balance value parameter and/or the picture contrast value parameter and/or the picture saturation value parameter; after the optimal white balance value parameter and/or the picture contrast value parameter and/or the picture saturation value parameter corresponding to the brightness value parameter are obtained, the projected parameters are adaptively changed, so that the current projected image is adjusted, and the projected image with good projection effect is adaptively output.
In summary, the embodiment of the invention solves the problem that in the prior art, the projector only adjusts the projection brightness, so that for the projection effect, the brightness at different gears has color deviation, and the higher and higher requirements of users are difficult to meet; the projection adjusting method is self-adaptive, accurate and good in user experience.
Example two:
on the basis of the first embodiment, in order to prevent the situation that the light intensity information of the projection environment fluctuates in a short time in a small range so as to cause continuous switching of the projection mode and influence the user experience, an anti-shake processing process is added before the corresponding projection mode is obtained according to the light intensity information.
Specifically, referring to fig. 2, the anti-shake process specifically includes:
judging whether the number n of times of acquiring the light intensity information is greater than the preset sampling number, wherein the preset sampling number can be set to a specific numerical value according to different use requirements, when the n is not greater than the preset sampling number, the light intensity information of the current projection environment is continuously acquired after the preset time is delayed, the problem that the projection image jitters due to frequent switching of projection modes is caused is solved only by continuously acquiring the light intensity information of the current projection environment after the preset time is delayed, and the change condition of the light intensity information of the current projection environment can be more accurately acquired by acquiring the light intensity information after the preset time is delayed.
And when n is greater than the preset sampling times, calculating a current light intensity weighted average value1 of the light intensity information obtained for multiple times, and obtaining a historical light intensity weighted average value2, wherein the weight of each obtained light intensity information can be set to different weights according to different application scenes.
Obtaining a contrast value M value 1/value 2 or M value 2/value 1, and storing a current light intensity weighted average value covering the historical light intensity weighted average value, namely: value2 Value 1. When the contrast value M is larger than a preset threshold value, a projection mode corresponding to the current light intensity weighted average value is obtained, if the contrast value M is not larger than the preset threshold value, the action of continuously obtaining the light intensity information is returned, the size of the contrast value M can be set according to a specific application scene, the smaller the contrast value M is, the more frequent the projection mode switching is, and conversely, the larger the contrast value M is, the smaller the interference of the projection mode by the light intensity information of the projection environment is, and the easier the projection mode switching is.
In summary, the projection adjusting method according to the embodiment of the invention provides a projection adjusting method capable of preventing the projection image from shaking due to frequent switching of the projection mode.
Example three:
referring to fig. 3, an embodiment of the present invention provides a projection adjusting apparatus, including:
the environment information acquisition module is used for acquiring light intensity information of the current projection environment;
the selection module is used for acquiring a corresponding projection mode according to the light intensity information;
the preset projection parameter key value acquisition module is used for extracting a preset projection parameter key value corresponding to the projection mode;
the parameter acquisition module is used for acquiring a corresponding brightness value parameter and/or a white balance value and/or a picture contrast value and/or a picture saturation value according to a preset projection parameter key value;
and the parameter adjusting module is used for adjusting the current projection image according to the brightness value parameter and/or the white balance value and/or the picture contrast value and/or the picture saturation value.
In addition, referring to fig. 4, in the embodiment of the present invention, the projection adjusting apparatus further includes an anti-shake processing module, an output end of the environment information obtaining module is connected to an input end of the anti-shake processing module, an output end of the anti-shake processing module is connected to an output end of the selecting module, that is, the anti-shake processing module is disposed between the environment information obtaining module and the selecting module, and the anti-shake processing module specifically includes:
the sampling frequency judging unit is used for judging whether the frequency of acquiring the light intensity information is greater than the preset sampling frequency or not; if yes, calculating a current light intensity weighted average value of a plurality of light intensity information; if not, delaying the preset time and continuing to acquire the light intensity information until the acquisition times are greater than the preset sampling times;
the comparison value calculation unit is used for comparing the current light intensity weighted average value with the historical light intensity weighted average value to obtain a comparison value, or comparing the historical light intensity weighted average value with the current light intensity weighted average value to obtain the comparison value;
the projection mode output unit is used for judging whether the contrast value is greater than a preset threshold value or not; if yes, acquiring a corresponding projection mode according to the current light intensity weighted average value, and storing the current light intensity weighted average value to cover the historical light intensity weighted average value; if not, returning to continue to acquire the light intensity information.
In the embodiment of the invention, the implementation process principle of the projection adjusting device can be in mutual reference correspondence with the implementation process principle of the projection adjusting method in the first embodiment and the second embodiment; the projection adjusting device is adaptive, accurate and anti-jitter.
Example four:
referring to fig. 5, an embodiment of the present invention provides a projector, which includes an optical sensor, an optical engine, and a main control module; the optical sensor is configured to acquire light intensity information of a current projection environment and transmit the light intensity information to the main control module, the main control module receives the light intensity information and then executes the projection adjusting method to output a control signal to the optical engine as in the second embodiment, and the output control signal includes projection adjusting parameters such as a brightness value parameter and/or a white balance value parameter and/or a picture contrast value parameter and/or a picture saturation value parameter, so as to change the projection adjusting parameters of the optical engine to adjust a projection image.
In summary, the projector in the embodiment of the invention solves the problems that in the prior art, only one parameter of projection brightness is adjusted by the projector, and color deviation occurs in brightness of different gears for projection effect, so that higher and higher requirements of users are difficult to meet; the projector is self-adaptive, accurate, good in user experience and capable of preventing the projection image from shaking.
Example five:
referring to fig. 6, an embodiment of the present invention provides a projection system, which includes an image source device, a projection screen, and a projector according to the fourth embodiment;
the image source device is connected with an interface of the projector and transmits an image to be projected to the optical machine; wherein, the image source device can be a PC, a U disk and the like; or the image source device can also be a network connection module integrated in the projector, the network connection module is connected with the internet and used for receiving internet image resources, when the image source device is the network connection module integrated in the projector, the network connection module is respectively connected with the main control module and the optical machine, and the network connection module receives the control of the main control module and transmits the received internet image resources to the optical machine as images to be projected in real time;
the light sensor acquires light intensity information of the current projection environment and transmits the light intensity information to the main control module;
the main control module outputs a control signal to the optical machine according to the light intensity information, the output control signal comprises projection adjusting parameters such as a brightness value parameter and/or a white balance value parameter and/or a picture contrast value parameter and/or a picture saturation value parameter, and the optical machine is further controlled to project an image to a projection screen.
In summary, the embodiment of the present invention provides a projection system that is adaptive, accurate, good in user experience, and capable of preventing a projected image from shaking.
Example six:
referring to fig. 7, an embodiment of the present invention provides another projection system, which includes an image source device, a projection screen, and a projector according to the fourth embodiment;
the image source device can also be a network connection module integrated in the projector, the network connection module is connected with the internet and used for receiving internet image resources, when the image source device is the network connection module integrated in the projector, the network connection module is respectively connected with the main control module and the optical machine, and the network connection module is controlled by the main control module to transmit the received internet image resources to the optical machine in real time as images needing to be projected;
the light sensor acquires light intensity information of the current projection environment and transmits the light intensity information to the main control module;
the main control module outputs a control signal to the optical machine according to the light intensity information, the output control signal comprises projection adjusting parameters such as a brightness value parameter and/or a white balance value parameter and/or a picture contrast value parameter and/or a picture saturation value parameter, and the optical machine is further controlled to project an image to a projection screen.
In summary, the embodiment of the present invention provides a projection system that is adaptive, accurate, good in user experience, and capable of preventing a projected image from shaking.
Example seven:
an embodiment of the present invention provides a projection adjustment control apparatus, which includes:
at least one processor; and a memory communicatively coupled to the at least one processor;
the processor is configured to execute the projection adjusting method according to the first embodiment or the second embodiment by calling a computer program stored in the memory.
Example eight:
the embodiment of the invention provides a computer-readable storage medium, wherein computer-executable instructions are stored in the computer-readable storage medium and used for enabling a computer to execute the projection adjusting method according to the first embodiment or the second embodiment.
While the preferred embodiments of the present invention have been illustrated and described, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (7)
1. A projection adjustment method, comprising:
acquiring light intensity information of a current projection environment;
acquiring a corresponding projection mode according to the light intensity information;
extracting a preset projection parameter key value corresponding to the projection mode;
acquiring a corresponding brightness value parameter and/or a white balance value parameter and/or a picture contrast value parameter and/or a picture saturation value parameter according to the preset projection parameter key value;
adjusting the current projection image according to the brightness value parameter and/or the white balance value parameter and/or the picture contrast value parameter and/or the picture saturation value parameter;
anti-jitter processing is also included before the corresponding projection mode is obtained according to the light intensity information; the anti-jitter processing includes:
judging whether the times of acquiring the light intensity information is greater than the preset sampling times or not;
if yes, calculating a current light intensity weighted average value of the plurality of light intensity information;
if not, delaying for a preset time and continuing to acquire the light intensity information until the acquisition times are greater than the preset sampling times;
comparing the current light intensity weighted average value with a historical light intensity weighted average value to obtain a comparison value, or comparing the historical light intensity weighted average value with the current light intensity weighted average value to obtain the comparison value;
storing the current light intensity weighted average value, covering the historical light intensity weighted average value, and judging whether the comparison value is greater than a preset threshold value;
if yes, acquiring the corresponding projection mode according to the current light intensity weighted average value;
if not, returning to continuously execute the light intensity information acquisition.
2. The projection adjustment method of claim 1, wherein the preset projection parameter key value comprises a brightness parameter key value.
3. A projection adjustment apparatus, comprising:
the environment information acquisition module is used for acquiring light intensity information of the current projection environment;
the selection module is used for acquiring a corresponding projection mode according to the light intensity information;
the preset projection parameter key value acquisition module is used for extracting a preset projection parameter key value corresponding to the projection mode;
the parameter acquisition module is used for acquiring a corresponding brightness value parameter and/or a white balance value and/or a picture contrast value and/or a picture saturation value according to the preset projection parameter key value;
the parameter adjusting module is used for adjusting the current projection image according to the brightness value parameter and/or the white balance value and/or the picture contrast value and/or the picture saturation value;
the projection adjusting device further comprises an anti-shaking processing module, the output end of the environment information acquisition module is connected with the input end of the anti-shaking processing module, the output end of the anti-shaking processing module is connected with the output end of the selection module, and the anti-shaking processing module specifically comprises:
the sampling frequency judging unit is used for judging whether the frequency of acquiring the light intensity information is greater than the preset sampling frequency or not; if yes, calculating a current light intensity weighted average value of the plurality of light intensity information; if not, delaying for a preset time and continuing to acquire the light intensity information until the acquisition times are greater than the preset sampling times;
the comparison value calculation unit is used for comparing the current light intensity weighted average value with a historical light intensity weighted average value to obtain a comparison value, or comparing the historical light intensity weighted average value with the current light intensity weighted average value to obtain the comparison value;
the projection mode output unit is used for judging whether the contrast value is larger than a preset threshold value or not; if yes, acquiring the corresponding projection mode according to the current light intensity weighted average value, and storing the current light intensity weighted average value to cover the historical light intensity weighted average value; if not, returning to continuously execute the light intensity information acquisition.
4. A projector is characterized by comprising an optical sensor, an optical machine and a main control module;
the optical sensor is used for acquiring light intensity information of the current projection environment and transmitting the light intensity information to the main control module;
the main control module executes the projection adjusting method according to any one of claims 1 to 2 to output a control signal to the optical machine, thereby controlling the operation of the optical machine.
5. A projection system comprising an image source device, a projection screen, and the projector of claim 4;
the image source device is connected with the projector and transmits an image to be projected to the optical machine;
the light sensor acquires light intensity information of a current projection environment and transmits the light intensity information to the main control module;
the main control module outputs a control signal to the light machine according to the light intensity information, and then controls the light machine to project the image to the projection screen.
6. A projection adjustment control apparatus, characterized by comprising:
at least one processor; and a memory communicatively coupled to the at least one processor;
wherein the processor is adapted to perform the projection adjustment method of any one of claims 1 to 2 by calling a computer program stored in the memory.
7. A computer-readable storage medium storing computer-executable instructions for causing a computer to perform the projection adjustment method according to any one of claims 1 to 2.
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| CN113542700A (en) * | 2020-04-15 | 2021-10-22 | 苏州佳世达光电有限公司 | Control method for projection device and projection device applying control method |
| CN114979594B (en) * | 2022-05-13 | 2023-05-30 | 深圳市和天创科技有限公司 | Intelligent ground color adjusting system of monolithic liquid crystal projector |
| CN114866753A (en) * | 2022-06-06 | 2022-08-05 | 深圳康佳电子科技有限公司 | Projector image quality adjusting method and device and projector |
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| JPS63216026A (en) * | 1987-03-05 | 1988-09-08 | Ricoh Co Ltd | Projection type liquid crystal display device |
| US7193594B1 (en) * | 1999-03-18 | 2007-03-20 | Semiconductor Energy Laboratory Co., Ltd. | Display device |
| WO2005082075A2 (en) * | 2004-02-25 | 2005-09-09 | The University Of North Carolina At Chapel Hill | Systems and methods for imperceptibly embedding structured light patterns in projected color images |
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| CN104575446A (en) * | 2014-12-31 | 2015-04-29 | 广东美的制冷设备有限公司 | Brightness adjustment method and device of display screen and air conditioner |
| CN108307139A (en) * | 2017-01-11 | 2018-07-20 | 华为技术有限公司 | A kind of method of image adjustment, video conference terminal and video conferencing system |
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