CN107197218B - Projection processing method and device - Google Patents
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- CN107197218B CN107197218B CN201610143981.4A CN201610143981A CN107197218B CN 107197218 B CN107197218 B CN 107197218B CN 201610143981 A CN201610143981 A CN 201610143981A CN 107197218 B CN107197218 B CN 107197218B
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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]
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- H04N9/3182—Colour adjustment, e.g. white balance, shading or gamut
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- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/001—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes using specific devices not provided for in groups G09G3/02 - G09G3/36, e.g. using an intermediate record carrier such as a film slide; Projection systems; Display of non-alphanumerical information, solely or in combination with alphanumerical information, e.g. digital display on projected diapositive as background
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Abstract
The invention provides a projection processing method and a device, wherein the method comprises the following steps: projecting to a projection surface; determining the color of the projected surface after projection; and adjusting the projection color of the projector according to the color of the projection surface. According to the invention, the problems that in the related art, when the projection is played on a non-white projection surface, the color of the projection surface can generate great influence on the color of the projection content, so that the vision of a user is interfered, and the user experience is influenced are solved, and the influence of the projection surface on the projection content is avoided, and the effect of improving the user experience is achieved.
Description
Technical Field
The invention relates to the field of communication, in particular to a projection processing method and device.
Background
The application of projectors is becoming more and more extensive at present, and the projectors are not only good assistants for people to work and meetings, but also are often found in families and daily life. The conference mainly uses a traditional professional projector, has excellent performance and high professional degree, and is often provided with a special projection curtain. But it is bulky, not portable, and generally only used in fixed meeting places. In order to meet the efficient and rapid living and office mode of the modern society, an integrated, intelligent and portable miniature projector has started to be completely open. The projector has the main characteristics of intellectualization and portability, can interact with the Internet and other terminals through a wireless network, can open projection and play at any time and any place, and is enough for small conferences and families to use although professional parameters of the projector are difficult to compare with those of a professional projector.
Because of the portability of the micro projector, the micro projector is used in various occasions, but a professional projection curtain cannot be configured for the micro projector usually, and the micro projector can project on a flat wall surface directly. As modern home decoration becomes more fashionable, walls do not keep the traditional white color any more, and wallpaper and wall paint with various colors are widely applied. Projection onto such a non-white surface will inevitably have a large influence on the color of the projected content itself, and further influence the user experience.
Therefore, in the related art, when the projection is played on a non-white projection surface, the color of the projection surface may have a large influence on the color of the projection content itself, and thus the user experience is affected due to the interference on the vision of the user.
In view of the above problems, no effective solution has been proposed in the related art.
Disclosure of Invention
The invention provides a projection processing method and a projection processing device, which are used for at least solving the problems that when a projection is played on a non-white projection surface, the color of the projection surface can generate great influence on the color of projection content, so that the vision of a user is interfered, and the user experience is influenced in the related technology.
According to an aspect of the present invention, there is provided a projection processing method including: projecting to a projection surface; determining the color of the projected surface after projection; and adjusting the projection color of the projector according to the color of the projection surface.
Optionally, the determining the color of the projection surface after projection includes: photographing the projection surface; and determining the color of the projection surface according to the picture obtained after photographing.
Optionally, projecting onto the projection surface comprises: projecting white light to the projection surface; determining the color of the projected surface comprises: receiving reflected light rays reflected by the white light on the projection surface; and determining the color of the projection surface according to the reflected light.
Optionally, adjusting the projection color of the projector according to the color of the projection surface comprises: determining the difference value of the color of the projection surface and the color of a standard projection surface; when the difference value is larger than or equal to a preset threshold value, the projection color is adjusted until the difference value between the color of the projected projection surface and the color of the standard projection surface is smaller than the preset threshold value.
Optionally, adjusting the projection color until the difference between the color of the projected projection surface and the standard projection surface color is smaller than the predetermined threshold comprises: and adjusting the projection colors in different areas until the difference value between the color of each area of the projected projection surface and the color of the standard projection surface is smaller than the preset threshold value.
According to another aspect of the present invention, there is provided a projection processing apparatus including: the projection module is used for projecting to a projection surface; the determining module is used for determining the color of the projected surface after projection; and the adjusting module is used for adjusting the projection color of the projector according to the color of the projection surface.
Optionally, the determining module includes: the photographing unit is used for photographing the projection surface; and the first determining unit is used for determining the color of the projection surface according to the picture obtained after photographing.
Optionally, the projection module comprises: the projection unit is used for projecting white light to the projection surface; the determining module comprises: the receiving unit is used for receiving the reflected light rays reflected by the white light on the projection surface; and the second determining unit is used for determining the color of the projection surface according to the reflected light.
Optionally, the adjusting module includes: the third determining unit is used for determining the difference value between the color of the projection surface and the color of a standard projection surface; and the adjusting unit is used for adjusting the projection color until the difference value between the color of the projected projection surface and the color of the standard projection surface is smaller than the preset threshold value when the difference value is larger than or equal to the preset threshold value.
Optionally, the adjusting unit includes: and the adjusting subunit is used for performing regional adjustment on the projection colors until the difference value between the color of each region of the projected projection surface and the color of the standard projection surface is smaller than the preset threshold value.
According to the invention, projection is carried out on a projection surface; determining the color of the projected surface after projection; and adjusting the projection color of the projector according to the color of the projection surface. The problem of exist among the correlation technique when the projection broadcast on non-white projection face, the colour of projection face can produce great influence to the colour of projection content itself, and then leads to user's vision to receive the interference, influences user experience is solved, and then has reached and has avoided the projection to receive the influence of projection content, improves user experience's effect.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
FIG. 1 is a flow diagram of a projection processing method according to an embodiment of the invention;
fig. 2 is a block diagram of a configuration of a projection processing apparatus according to an embodiment of the present invention;
fig. 3 is a block diagram of the structure of the determination module 24 in the projection processing apparatus according to the embodiment of the present invention;
fig. 4 is a block diagram showing the structures of the projection module 22 and the determination module 24 in the projection processing apparatus according to the embodiment of the present invention;
FIG. 5 is a block diagram of the adjusting module 26 in the projection processing apparatus according to the embodiment of the present invention;
fig. 6 is a block diagram of the structure of the adjusting unit 54 in the projection processing apparatus according to the embodiment of the present invention;
FIG. 7 is a schematic diagram of a color display according to an embodiment of the invention;
FIG. 8 is a flowchart of a method of adjusting projection colors according to an embodiment of the invention;
FIG. 9 is a diagram illustrating a system for adjusting projection colors according to an embodiment of the present invention.
Detailed Description
The invention will be described in detail hereinafter with reference to the accompanying drawings in conjunction with embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.
In the present embodiment, a projection processing method is provided, and fig. 1 is a flowchart of a projection processing method according to an embodiment of the present invention, where the flowchart includes the following steps, as shown in fig. 1:
step S102, projecting to a projection surface;
step S104, determining the color of the projected projection surface;
and step S106, adjusting the projection color of the projector according to the color of the projection surface.
The projector may perform the above operations, and the projection surface is a plane for projection, such as a wall, a flat plate, or a curtain.
Through the steps, when projection is carried out, the color of the projected projection surface can be comprehensively considered, when the projector plays projection content on the non-white projection surface, the color of a projection picture can be automatically adjusted according to the color of the projection surface, so that the user's impression experience is closer to the color of the original projection content, and the user's impression experience is not influenced by the color of the projection surface.
In the step S104, there are various ways to obtain the color of the projection surface, and in an alternative embodiment, the determining the color of the projection surface after projection includes: photographing the projection surface; and determining the color of the projection surface according to the picture obtained after photographing. In this embodiment, the projected projection surface may be photographed, and then the photographed image may be analyzed to determine the color of the projected projection surface.
In an alternative embodiment, the color of the projection surface may also be obtained by: when the white light is projected to the projection surface, the white light can be projected to the projection surface; after the white light is projected, the reflected light of the white light reflected on the projection surface can be received; and determining the color of the projection surface according to the reflected light. In this embodiment, the reflected light may be filtered by a filter of the photosensimeter to filter out red, green, yellow, blue, and white. These filtered color light convert the signal of telecommunication into through photodiode, can produce the signal of telecommunication of different intensity along with the difference of light intensity, and then can convert the numerical value of corresponding not equidimension.
In the step S106, the adjusting the projection color of the projector according to the color of the projection surface includes: determining the difference value between the color of the projection surface and the color of the standard projection surface; and when the difference is larger than or equal to a preset threshold value, adjusting the projection color until the difference between the color of the projected projection surface and the color of the standard projection surface is smaller than the preset threshold value. In this embodiment, a standard projection surface color may be stored in advance, and the standard projection surface color may be a color most suitable or used by a user, and when the projection surface color after projection is largely different from the standard projection surface color, the color of the projected projection surface can be adjusted by adjusting the projection color projected onto the projection surface, when the difference between the projected projection surface color and the standard projection surface color is greater than or equal to a predetermined threshold, the projection color is adjusted until the difference between the projected projection surface color and the standard projection surface color is less than the predetermined threshold, when the difference value between the projected projection surface color and the standard projection surface color is smaller than the predetermined threshold value, it indicates that the projected projection surface color is the projection color that is more suitable for the user, and in this case, the adjustment of the projection color may be stopped. In addition, in the using process, once the difference value between the projected projection surface color and the standard projection surface color is greater than or equal to the predetermined threshold value, the adjustment is continued, that is, the adjustment process can be always existed in the whole using process of the projector, so that the viewing experience of the user in the whole projection process is effectively ensured.
In an optional embodiment, adjusting the projection color until the difference between the color of the projected projection surface and the color of the standard projection surface is smaller than a predetermined threshold comprises: and adjusting the projection colors in different areas until the difference value between the color of each area of the projected projection surface and the color of the standard projection surface is smaller than the preset threshold value. In practical application, when the projection surface is large, colors of different areas may be different, and under the condition, the projection colors projected to the different areas can be respectively adjusted in different areas, so that the colors of the areas on the projection surface are close to the colors of the standard projection surface.
Through the above description of the embodiments, those skilled in the art can clearly understand that the method according to the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but the former is a better implementation mode in many cases. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (e.g., ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal device (e.g., a mobile phone, a computer, a server, or a network device) to execute the method according to the embodiments of the present invention.
In this embodiment, a projection processing apparatus is further provided, and the apparatus is used to implement the foregoing embodiments and preferred embodiments, and the description of the apparatus is omitted for brevity. As used below, the term "module" may be a combination of software and/or hardware that implements a predetermined function. Although the means described in the embodiments below are preferably implemented in software, an implementation in hardware, or a combination of software and hardware is also possible and contemplated.
Fig. 2 is a block diagram of a projection processing apparatus according to an embodiment of the present invention, and as shown in fig. 2, the apparatus includes a projection module 22, a determination module 24, and an adjustment module 26, and the apparatus is explained as follows:
a projection module 22 for projecting onto a projection surface; a determining module 24, connected to the projecting module 22, for determining the color of the projected projection surface; and an adjusting module 26, connected to the determining module 24, for adjusting the projection color of the projector according to the color of the projection surface.
Fig. 3 is a block diagram of a structure of the determination module 24 in the projection processing apparatus according to the embodiment of the present invention, as shown in fig. 3, the determination module 24 includes a photographing unit 32 and a first determination unit 34, and the determination module 24 is explained as follows:
a photographing unit 32 for photographing the projection plane; and a first determining unit 34, connected to the photographing unit 32, for determining the color of the projection plane according to the photographed image.
Fig. 4 is a block diagram of the structures of the projection module 22 and the determination module 24 in the projection processing apparatus according to the embodiment of the present invention, as shown in fig. 4, the projection module 22 includes a projection unit 42, the determination module 24 includes a receiving unit 44 and a second determination unit 46, and the following describes the projection module 22 and the determination module 24:
a projection unit 42 for projecting white light onto a projection surface;
a receiving unit 44, configured to receive reflected light rays reflected by the white light on the projection surface; a second determining unit 46, connected to the receiving unit 44, for determining the color of the projection surface according to the reflected light.
Fig. 5 is a block diagram of the adjusting module 26 in the projection processing apparatus according to the embodiment of the invention, and as shown in fig. 5, the adjusting module 26 includes a third determining unit 52 and an adjusting unit 54, and the adjusting module 26 is explained below.
A third determining unit 52, configured to determine a difference between the color of the projection surface and the color of the standard projection surface; an adjusting unit 54, connected to the third determining unit 52, for adjusting the projection color until the difference between the color of the projected projection surface and the color of the standard projection surface is smaller than the predetermined threshold value when the difference is larger than or equal to the predetermined threshold value.
Fig. 6 is a block diagram of the adjusting unit 54 in the projection processing apparatus according to the embodiment of the invention, and as shown in fig. 6, the adjusting unit 54 includes an adjusting subunit 62, and the adjusting subunit 62 is explained below.
And an adjusting subunit 62, configured to perform regional adjustment on the projection colors until differences between colors of each region of the projected projection surface and colors of the standard projection surface are smaller than the predetermined threshold.
How to adjust the projection color is described below with reference to specific embodiments:
the embodiment of the invention provides a method and a system for adjusting projection colors, so that when a projector plays projection contents on a non-white wall surface, the colors of projection pictures can be automatically adjusted according to the colors of the wall surface, the appearance experience of a user is closer to the colors of original projection contents, the influence of the wall surface colors is avoided, and the user experience is improved.
In order to achieve the above object, an embodiment of the present invention provides a method capable of adjusting a color of a projection picture according to a color of a projection wall or a curtain, and the method is briefly described as follows:
A. the projection device collects color information to a projection surface (wall or projection screen) through a color acquisition unit (corresponding to the determination module 24 described above).
B. The projection device compares the collected color information with standard color information stored in the device through a color comparison unit (corresponding to the third determination unit 52) to obtain a set of color difference data between the projection surface color and the standard color.
C. For the color difference data, the projection device stores a set of threshold values (corresponding to the predetermined threshold values) in advance, the projection device compares the color difference data in the step B with the set of threshold values, and if the color difference data reaches or exceeds the set of threshold values, the step D is executed; if the set of threshold values is less than the threshold value, the projection color adjustment is finished.
D. If the color difference data reaches or exceeds the threshold value, the projection device calculates the set of color difference data through the data processing unit to obtain parameters required by color adjustment, and outputs the parameters to the storage unit.
E. The projection device obtains the parameters of color adjustment from the storage unit through a color adjustment unit (corresponding to the adjustment unit 54 described above), and adjusts the color reference of projection, so that the color presented on the projection surface is closer to the standard color of the projection surface stored in the original projection device.
F. And D, repeating the steps A to E until the color difference data in the step C is smaller than the threshold value, and finishing the projection color adjustment.
The present invention also provides a system for automatically adjusting projection colors, including but not limited to: the device comprises a color acquisition unit, a color comparison unit, a color adjustment unit, a data processing unit, a storage unit and the like.
The following explains each unit involved in the above embodiments:
and the color acquisition unit is responsible for acquiring the color information of the projection surface (the wall surface and the curtain).
In the step a, when acquiring the color of the projection surface, the color of the projection surface may be acquired by using the principle of a photosensimeter. The method comprises the following steps: the white light is projected to a projection surface in the projection process, the light reflected by the projection surface enters a color acquisition unit, the reflected light is filtered through an optical filter of a photosensimeter, and the four colors of red, green, yellow and blue and the white are filtered. These filtered color light convert the signal of telecommunication into through photodiode, can produce the signal of telecommunication of different intensity along with the difference of light intensity, and then can convert the numerical value of corresponding not equidimension. FIG. 7 is a schematic diagram of a color display according to an embodiment of the present invention, in which, as shown in FIG. 7, a red value is defined as positive and a green value is defined as negative, and a is obtained by adding the red value and the green value; the yellow numerical value is defined as positive, the blue numerical value is defined as negative, and the yellow numerical value and the blue numerical value are added to obtain b; the value of the white light conversion can be positive or negative, defined as L. Thus, the color data L, a, b of the projection surface can be obtained by the color obtaining unit.
The color comparison unit is responsible for comparing the acquired color of the projection surface with a reference color stored in the device to obtain a group of color difference data between the color of the projection surface and the reference color, and storing the color difference data in the storage unit. The method for comparing colors by the color comparison unit comprises but is not limited to the optical comparison method used by the current colorimeter.
In the color comparison method, the color comparison can be performed by using the principle of the current color difference meter, namely, the color difference between the sample plate and the detected product is compared, and four groups of color difference data of delta E, delta L, delta a and delta b after color comparison are output. Wherein,
ΔE＝[(ΔL)2+(Δa)2+(Δb)2]1/2
Δ E represents the magnitude of the total color difference,
Δ L ═ L sample-L standard (lightness difference), Δ L + indicates white bias, Δ L-indicates black bias;
Δ a ═ a sample-a standard (red/green difference), Δ a + indicates a reddish bias, Δ a-indicates a greenish bias;
Δ b ═ b sample-b standard (yellow/blue difference), Δ b + indicates partial yellow, Δ b-indicates partial blue;
according to the above principle, a set of color difference data obtained by the analysis after comparison includes, but is not limited to, Δ E, Δ L, Δ a, and Δ b.
And the data processing unit is responsible for comparing the color difference data output by the color comparison unit with a preset threshold value of the equipment, and if the color difference data is smaller than the threshold value, the projection color does not need to be adjusted. If the color adjustment parameter is larger than or equal to the threshold value, the group of data is calculated to obtain the color adjustment parameter, and the color adjustment parameter is output to the storage unit.
And the color adjusting unit is responsible for reading the color adjusting parameters from the storage unit and adjusting the projected color standard according to the adjusting parameters so that the color presented by the projection surface is closer to the standard color. The method for adjusting the color by the color adjusting unit includes, but is not limited to, adjusting a projected color wheel, a DMD chip, etc.
And the storage unit is responsible for storing various information data required and generated by each unit and performing data interaction with the units.
The method for adjusting the projection color provided by the embodiment of the invention can automatically adjust the color of the projection picture according to the color of the wall surface when the projector plays the projection content on the non-white wall surface (or other projection surfaces), so that the appearance experience of a user is closer to the color of the original projection content, and the method is not influenced by the color of the wall surface.
FIG. 8 is a flowchart of a method for adjusting a projection color according to an embodiment of the present invention, which includes the following steps:
step S801 is that the user turns on the projection device, and the projection device starts the automatic projection color adjustment system after turning on.
Preferably, the projection device includes, but is not limited to, a professional projector and a portable mini projector.
Step S802, after the automatic adjustment projection color system is started, the color obtaining unit collects color information of the projection surface (wall surface or curtain). The method for collecting projection color information can use an optical method, that is, after white light is projected to a projection surface by projection, reflected light of the white light is collected, so that the accurate color of the projection surface is judged. In addition, the color of the projection surface may be acquired by photographing the projection surface.
Step S803, a standard color of a projection surface is pre-stored in the projection device, and the color contrast unit performs color contrast between the collected projection surface color and the pre-stored standard color, and analyzes the collected projection surface color and the pre-stored standard color to obtain a set of color difference data.
In step S804, a set of threshold values is stored in the projection apparatus in advance, and the types of the threshold values completely match the types of the color difference data calculated in step S803. The color difference data is compared with the threshold value, and the next step is performed according to the definition of step S805.
Preferably, the threshold may be defined as follows:
Δ ES is defined as the total color difference threshold, Δ LS is defined as the brightness difference threshold,
Δ aS is defined aS the red/green difference threshold and Δ bS is defined aS the yellow/blue threshold.
Step S805, comparing the calculated color difference data with a threshold, and defining the comparison result as follows:
only when the comparison results of the absolute values of the four color difference data of the delta E, the delta L, the delta a and the delta b and the corresponding thresholds delta ES, delta LS, delta aS and delta bS are all smaller than the threshold, the final comparison result can be judged to be smaller than the threshold; if one of the absolute values of the four color difference values is greater than the corresponding threshold value, the final comparison result is judged to be greater than the threshold value; and if the absolute values of the four color difference values are all equal to the corresponding threshold values, judging that the final comparison result is equal to the threshold value.
If the final comparison result is smaller than the threshold value, the color difference is proved to be in a specified range, and the projection color does not need to be adjusted; if the final comparison result is greater than or equal to the threshold, the color difference is proved to be too large, and step S806 needs to be performed.
In step S806, if the final comparison result is greater than or equal to the threshold, the data processing unit processes the four color difference data Δ E, Δ L, Δ a, and Δ b to obtain the color adjustment parameter.
Preferably, in the embodiment of the present invention, a method for processing the four color difference data is defined as a compensation method, for example, as follows:
if Δ L is + indicating white bias, the lightness of the color needs to be reduced, and the reduction width is related to the magnitude of the absolute value of Δ L.
If Δ a is-indicating greenish, then the color red/green needs to be adjusted to increase red and decrease green. The magnitude of the increase and decrease is related to the magnitude of the absolute value of Δ a.
If Δ b is + indicating a yellowish color, the color yellow/blue needs to be adjusted to decrease the yellow and increase the blue. The magnitude of the increase and decrease is related to the magnitude of the absolute value of Δ b.
The Δ E is only one criterion for determining whether the color difference data exceeds the threshold as a whole, and does not participate in the calculation and processing of the color adjustment parameter.
In step S807, the color adjustment unit adjusts the projected color reference according to the color adjustment parameters obtained in step S806. The adjustment of the color reference of the projection means that, regardless of the projection content, if the green color is required to be added in the color reference adjustment, the green color element should be added correspondingly to the projection of any picture. If a reduction in yellow is required in the color reference adjustment, then the yellow element should be reduced accordingly for any projection of the picture.
When the color adjustment unit finishes adjusting the projected color reference according to the color adjustment parameters, step S802 is performed, and the next round of obtaining the color information of the projection surface is started until the final comparison result in step S805 is smaller than the threshold, and then the automatic adjustment of the projected color is finished.
In an embodiment of the present invention, there is further provided a system for adjusting a projection color, and fig. 9 is a schematic diagram of a system for adjusting a projection color according to an embodiment of the present invention, which includes, but is not limited to, the above-mentioned color obtaining unit (corresponding to 92 in fig. 9), the color comparing unit (corresponding to 94 in fig. 9), the data processing unit (corresponding to 96 in fig. 9), the color adjusting unit (corresponding to 98 in fig. 9), and the storage unit (corresponding to 910 in fig. 9). The concrete components are as follows:
the color obtaining unit is responsible for collecting color information of a projection surface (a wall surface or a curtain). Methods for collecting the color information of the projection surface include, but are not limited to, using an optical method, or a photographing method, etc. When the user starts the projection, the automatic adjustment projection color system is automatically started, and the color acquisition unit starts to work.
And the color comparison unit is responsible for carrying out color comparison on the acquired projection surface color and a pre-stored standard color, analyzing to obtain a group of color difference data, and storing the group of color difference data into the storage unit.
And the data processing unit is responsible for reading the color difference data and a preset threshold value from the storage unit, comparing the color difference data and the threshold value, and judging a final comparison result. And if the obtained final comparison result is that the color difference data is smaller than the threshold value, ending the whole process of automatically adjusting the projection color. And if the obtained final comparison result is that the color difference data is greater than or equal to the threshold value, the data processing unit is responsible for calculating the color adjustment parameter and storing the color adjustment parameter into the storage unit.
And the color adjusting unit is responsible for reading the color adjusting parameters from the storage unit and adjusting the projected color standard according to the adjusting parameters so that the color presented by the projection surface is closer to the standard color.
Preferably, the method for adjusting the color by the color adjusting unit includes, but is not limited to, adjusting a coefficient of rotation of a color wheel projected, a Digital Micromirror Device (DMD) chip parameter, and the like.
And the storage unit is responsible for storing various information data required and generated by each unit and performing data interaction with the units.
It should be noted that, the above modules may be implemented by software or hardware, and for the latter, the following may be implemented, but not limited to: the modules are all positioned in the same processor; alternatively, the modules are respectively located in a plurality of processors.
The embodiment of the invention also provides a storage medium. Alternatively, in the present embodiment, the storage medium may be configured to store program codes for performing the following steps:
s1, projecting to the projection surface;
s2, determining the color of the projected surface;
and S3, adjusting the projection color of the projector according to the color of the projection surface.
Optionally, in this embodiment, the storage medium may include, but is not limited to: various media capable of storing program codes, such as a usb disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic disk, or an optical disk.
Optionally, in this embodiment, the processor executes the above steps according to program codes stored in the storage medium.
Optionally, the specific examples in this embodiment may refer to the examples described in the above embodiments and optional implementation manners, and this embodiment is not described herein again.
In summary, the current micro projector has been widely appeared on the market, and the occasion of its use is various, often can not dispose professional projection curtain, can in the projection of level and smooth wall. If the projection is played on a non-white wall surface or curtain, the color of the projection content is certainly influenced greatly, and the user experience is influenced. By the method and the system for adjusting the projection color, when the projector plays the projection content on a colored wall surface or curtain, the color reference of the projection can be calculated and adjusted according to the color difference between the color of the wall surface or curtain and the self-stored standard color, so that the appearance experience of a user is closer to the self color of the original projection content and is not influenced by the wall surface color.
It will be apparent to those skilled in the art that the modules or steps of the present invention described above may be implemented by a general purpose computing device, they may be centralized on a single computing device or distributed across a network of multiple computing devices, and alternatively, they may be implemented by program code executable by a computing device, such that they may be stored in a storage device and executed by a computing device, and in some cases, the steps shown or described may be performed in an order different than that described herein, or they may be separately fabricated into individual integrated circuit modules, or multiple ones of them may be fabricated into a single integrated circuit module. Thus, the present invention is not limited to any specific combination of hardware and software.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. A projection processing method, comprising:
projecting to a projection surface;
determining the color of the projected surface after projection;
adjusting the projection color of the projector according to the color of the projection surface;
wherein the projecting onto the projection surface comprises: projecting white light to the projection surface; determining the color of the projected surface comprises: receiving reflected light rays reflected by the white light on the projection surface; determining the color of the projection surface according to the reflected light;
the method further comprises the following steps: filtering the reflected light rays through an optical filter of a photosensimeter, filtering out red, green, yellow, blue and white reflected light rays to obtain filtered color light rays, converting the filtered color light rays into electric signals through a photosensitive diode, and converting the electric signals into corresponding numerical values to determine the color of the projection surface;
wherein adjusting the projection color of the projector according to the color of the projection surface comprises: determining color difference data of the color of the projection surface and a pre-stored standard projection surface color;
the color difference data includes: the lightness difference DeltaL between the color of the projection surface and the color of the standard projection surface stored in advance,A red-green difference Δ a between the color of the projection surface and the pre-stored standard projection surface color, a yellow-blue difference Δ b between the color of the projection surface and the pre-stored standard projection surface color, and a total color difference Δ E = [ (Δ L) between the color of the projection surface and the pre-stored standard projection surface color2+(Δa)2+(Δb)2]1/2Four sets of color difference data;
comparing the color difference data to a predetermined threshold; determining that the color difference of the projection surface is within a specified range without adjusting the projection color of a projector under the condition that the absolute value of each set of color difference data in the color difference data is smaller than the corresponding preset threshold; when the absolute value of a group of color difference data in the color difference data is larger than or equal to the corresponding preset threshold value, determining that the color difference of the projection surface is too large, and processing the color difference data through a compensation method to obtain a color adjustment parameter;
adjusting the color reference of the projection color of the projector according to the color adjustment parameter;
wherein the compensation method comprises: the delta L is positive and represents partial white, the lightness of the color needs to be reduced, the delta L is negative and represents partial black, and the lightness of the color needs to be increased; the delta a is positive and indicates that the red and green components of the color are needed to be adjusted, red is reduced, and green is increased, the delta a is negative and indicates that the green and red components of the color are needed to be adjusted, red is increased, and green is reduced; the delta b represents yellow when being positive, the yellow-blue component of the color needs to be adjusted, yellow is reduced, and blue is increased, the delta b represents blue when being negative, the yellow-blue component of the color needs to be adjusted, yellow is increased, and blue is reduced, the delta E is only used as a standard for judging whether the color difference data exceeds a threshold value as a whole, and does not participate in the confirmation of the color adjustment parameter;
the predetermined threshold includes: a total color difference threshold value delta ES, a brightness difference threshold value delta LS, a red-green difference threshold value delta aS and a yellow-blue difference threshold value delta bS.
2. The method of claim 1, wherein determining the color of the projection surface after projection further comprises:
photographing the projection surface;
and determining the color of the projection surface according to the picture obtained after photographing.
3. The method of claim 1, wherein adjusting the color reference for the projected color of the projector according to the color adjustment parameter comprises:
and adjusting the projection colors in different areas until the difference value between the color of each area of the projected projection surface and the color of the pre-stored standard projection surface is smaller than the preset threshold value.
4. A projection processing apparatus, comprising:
the projection module is used for projecting to a projection surface;
the determining module is used for determining the color of the projected surface after projection;
the adjusting module is used for adjusting the projection color of the projector according to the color of the projection surface;
wherein the projection module comprises: the projection unit is used for projecting white light to the projection surface; the determining module comprises: the receiving unit is used for receiving the reflected light rays reflected by the white light on the projection surface; the second determining unit is used for determining the color of the projection surface according to the reflected light;
the apparatus is further configured to: filtering the reflected light rays through an optical filter of a photosensimeter, filtering out red, green, yellow, blue and white reflected light rays to obtain filtered color light rays, converting the filtered color light rays into electric signals through a photosensitive diode, and converting the electric signals into corresponding numerical values to determine the color of the projection surface;
the adjusting module is further configured to determine color difference data between the color of the projection surface and a pre-stored standard projection surface color; the color difference data includes: the color of the projection surface and theA lightness difference Δ L of a pre-stored standard projection plane color, a red-green difference Δ a of the projection plane color from the pre-stored standard projection plane color, a yellow-blue difference Δ b of the projection plane color from the pre-stored standard projection plane color, and a total color difference Δ E = [ (Δ L) of the projection plane color from the pre-stored standard projection plane color2+(Δa)2+(Δb)2]1/2Four sets of color difference data;
comparing the color difference data to a predetermined threshold; determining that the color difference of the projection surface is within a specified range without adjusting the projection color of a projector under the condition that the absolute value of each set of color difference data in the color difference data is smaller than the corresponding preset threshold; when the absolute value of a group of color difference data in the color difference data is larger than or equal to the corresponding preset threshold value, determining that the color difference of the projection surface is too large, and processing the color difference data through a compensation method to obtain a color adjustment parameter;
adjusting the color reference of the projection color of the projector according to the color adjustment parameter;
wherein the compensation method comprises: the delta L is positive and represents partial white, the lightness of the color needs to be reduced, the delta L is negative and represents partial black, and the lightness of the color needs to be increased; the delta a is positive and indicates that the red and green components of the color are needed to be adjusted, red is reduced, and green is increased, the delta a is negative and indicates that the green and red components of the color are needed to be adjusted, red is increased, and green is reduced; the delta b represents yellow when being positive, the yellow-blue component of the color needs to be adjusted, yellow is reduced, and blue is increased, the delta b represents blue when being negative, the yellow-blue component of the color needs to be adjusted, yellow is increased, and blue is reduced, the delta E is only used as a standard for judging whether the color difference data exceeds a threshold value as a whole, and does not participate in the confirmation of the color adjustment parameter;
the predetermined threshold includes: a total color difference threshold value delta ES, a brightness difference threshold value delta LS, a red-green difference threshold value delta aS and a yellow-blue difference threshold value delta bS.
5. The apparatus of claim 4, wherein the determining module comprises:
the photographing unit is used for photographing the projection surface;
and the first determining unit is used for determining the color of the projection surface according to the picture obtained after photographing.
6. The apparatus of claim 4, wherein the adjustment module further comprises:
and the adjusting subunit is used for performing regional adjustment on the projection colors until the difference between the color of each region of the projected projection surface and the color of the pre-stored standard projection surface is smaller than the preset threshold.
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| CN201610143981.4A CN107197218B (en) | 2016-03-14 | 2016-03-14 | Projection processing method and device |
| PCT/CN2016/080386 WO2016197733A2 (en) | 2016-03-14 | 2016-04-27 | Projection processing method and device |
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| CN201610143981.4A CN107197218B (en) | 2016-03-14 | 2016-03-14 | Projection processing method and device |
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| CN107197218B true CN107197218B (en) | 2022-04-19 |
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| CN107257453A (en) * | 2017-07-12 | 2017-10-17 | 上海斐讯数据通信技术有限公司 | The color calibration method and system of a kind of projected image |
| CN108269231A (en) * | 2017-12-29 | 2018-07-10 | 深圳市艺博堂环境艺术工程设计有限公司 | A kind of image interfusion method and its image fusion device for ball curtain system |
| CN109286800A (en) * | 2018-10-23 | 2019-01-29 | 北京数科技有限公司 | A kind of projected color method of adjustment and device |
| CN112687217B (en) * | 2020-12-28 | 2023-04-25 | 维沃移动通信有限公司 | Projection method, wearable device and readable storage medium |
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| CN1517780A (en) * | 2003-01-21 | 2004-08-04 | 惠普开发有限公司 | Correcting of projection image based on reflection image |
| CN101507286A (en) * | 2006-08-17 | 2009-08-12 | 索尼爱立信移动通讯股份有限公司 | Projector adaptation |
| CN102547306A (en) * | 2012-03-14 | 2012-07-04 | 海信集团有限公司 | Projector and method for correcting colors of projected image of projector |
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| JP3707350B2 (en) * | 2000-05-08 | 2005-10-19 | セイコーエプソン株式会社 | Image display system, projector, image processing method, and information storage medium |
| JP2003323610A (en) * | 2002-03-01 | 2003-11-14 | Nec Corp | Color correcting method and device, for projector |
| CN1507281A (en) * | 2002-12-12 | 2004-06-23 | 全友电脑股份有限公司 | Color correction device and method for projector |
| DE10347388A1 (en) * | 2003-10-08 | 2005-05-04 | Zeiss Carl Jena Gmbh | Arrangement for correcting the visual representation of image information |
| CN102244757B (en) * | 2011-06-07 | 2013-09-18 | 北京邮电大学 | Color calibration method of large multi-projection screen based on projector-camera system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1517780A (en) * | 2003-01-21 | 2004-08-04 | 惠普开发有限公司 | Correcting of projection image based on reflection image |
| CN101507286A (en) * | 2006-08-17 | 2009-08-12 | 索尼爱立信移动通讯股份有限公司 | Projector adaptation |
| CN102547306A (en) * | 2012-03-14 | 2012-07-04 | 海信集团有限公司 | Projector and method for correcting colors of projected image of projector |
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| WO2016197733A3 (en) | 2017-02-02 |
| CN107197218A (en) | 2017-09-22 |
| WO2016197733A2 (en) | 2016-12-15 |
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