CN105825796A - Projection control method, projection control device and projection device - Google Patents
Projection control method, projection control device and projection device Download PDFInfo
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- 238000012360 testing method Methods 0.000 claims abstract description 187
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/64—Circuits for processing colour signals
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/74—Projection arrangements for image reproduction, e.g. using eidophor
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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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- Physics & Mathematics (AREA)
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- Controls And Circuits For Display Device (AREA)
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- Video Image Reproduction Devices For Color Tv Systems (AREA)
Abstract
The invention discloses a projection control method, a projection control device and a projection device. Before formal projection, a full standard color content is projected to a projection surface, and a content currently displayed on the projection surface is acquired to obtain a projection surface test picture; the color of each pixel point of the projection surface test picture is compared with a standard color to determine non-standard color pixel points in need of color correction; color correction is carried out on the non-standard color pixel points to obtain a correction color of each non-standard color pixel point; and when formal projection is carried out, the non-standard color pixel points on the projection surface adopt corresponding correction colors for projection. As color correction is carried out on the non-standard color pixel points on the projection surface and the pixel points adopt correction colors for projection in the case of projection, in conditions in which no projection cloth exists, or stains exist on the projection cloth or a projection wall or ambient light has color, the restoration degree of the projection image is enhanced, the projection quality is enhanced, and the user experience satisfaction degree is further enhanced.
Description
Technical field
The present invention relates to MultiMedia Field, be specifically related to a kind of method for controlling projection, device and projector equipment.
Background technology
Projector, also known as scialyscope, is a kind of can be connected the corresponding video signal of broadcasting by the different same computers of interface, VCD, DVD, BD, game machine, DV etc. by the equipment on image or VIDEO PROJECTION to curtain.Projector is widely used in family, office, school and public place of entertainment, different according to working method, has CRT, and LCD, DLP etc. are dissimilar.According to statistics, within 2010, China's Projector Market shipment amount scale reaches 1,280,000, compares 2009 and increases by 43.6%.Thinking, China's Projector Market in 2011 will keep quickly increasing, and annual shipment amount is up to 1,670,000, year rate of growth about projector be 30%.The five-year, the compound growth rate of China's Projector Market is up to 17.1%.The nearly 2 years costs along with projector and price rapid decrease, market occurs in that the state of blowout, and projector rapidly enters huge numbers of families.Home theater type, portable business type projector progressively become main force's type in market.
The projection theory of existing projector is the color (rgb value) of each pixel according to project content, is combined into the color of correspondence, and light is projected objects in front surface (curtain, metope etc.) by this color by camera lens and forms image.But cause perspective plane nonstandard owing to the projection environment of family or simple commercial affairs is not likely to be very standard, such as environment light has color, or do not project special curtain and time directly use itself has the metope of color or stain as perspective plane, project to draw above and will produce the deviation of color as color, can to a certain degree reduce image color reduction degree, affect the viewing effect of projection picture.
Summary of the invention
The main technical problem to be solved in the present invention is to provide a kind of method for controlling projection, device and projector equipment, the problem solving to cause drop shadow effect's difference in existing projection process because perspective plane is nonstandard.
For solving above-mentioned technical problem, the present invention provides a kind of method for controlling projection, including:
Projecting full reference colour content to perspective plane, then acquired projections face present displayed content obtains perspective plane test picture；
Color and the described reference colour of the described perspective plane test each pixel of picture are compared and determines and need to carry out the non-standard color pixel of color correct；
Described non-standard color pixel is carried out color correct and obtains the correction color of each non-standard color pixel；
On described perspective plane during projection, corresponding correction color is used to project described non-standard color pixel.
In an embodiment of the present invention, described determine need the non-standard color pixel carrying out color correct to include:
Obtain the color of the described perspective plane test each pixel of picture；
Judge that the color of described each pixel is the most identical with described reference colour, as no respectively, it is determined that this pixel is non-standard color pixel；Otherwise, it determines this pixel is Standard Colors pixel.
In an embodiment of the present invention, described non-standard color pixel is carried out color correct to include:
Using described non-standard color pixel color in described perspective plane test picture as the background color of this pixel；
Obtain color corresponding to content that described non-standard color pixel will the project foreground color as this pixel；
Background color and foreground color according to described non-standard color pixel find the corresponding best image color correction color as this pixel in the colour atla conversion table pre-set；Described colour atla conversion table comprises the best image color that each background color is corresponding with foreground color.
In an embodiment of the present invention, pre-set colour atla conversion table described in include:
Color C is selected from standard color card range tableiAs background color, described i is more than or equal to 1, the color sum comprised by described standard color card range table less than or equal to n, described n；
Described background color and described reference colour are tested the testing background color on perspective plane as the first test perspective plane and second；
Color C is selected from described standard color card range tablejAs foreground color, with on described foreground color content projected test images respectively to described first test perspective plane and on the second test perspective plane；Described j is more than or equal to 1, the color sum comprised by described standard color card range table less than or equal to n, described n；
Adjusting the test color of image on described first test perspective plane makes its display effect consistent with the test image display effect on described second test perspective plane, will final color best image color Z corresponding with described foreground color as described background color after adjustmentijRecorded in colour atla conversion table；
Or,
Color C is selected from standard color card range tableiAs background color, described i is more than or equal to 1, the color sum comprised by described standard color card range table less than or equal to n, described n；
Using described background color as the testing background color testing perspective plane；
Color C is selected from described standard color card range tablejAs foreground color, with on described foreground color content projected test images to described test perspective plane；Described j is more than or equal to 1, the color sum comprised by described standard color card range table less than or equal to n, described n；
Adjusting the test color of image on described test perspective plane makes its display effect reach optimal, color best image color Z corresponding with described foreground color as described background color after finally adjustingijRecorded in colour atla conversion table.
In an embodiment of the present invention, described reference colour is white.
In order to solve the problems referred to above, present invention also offers a kind of projection control, including test picture acquisition module, judge module, color correct module and projection module；
Described test picture acquisition module is used for projecting full reference colour content to perspective plane, and then acquired projections face present displayed content obtains perspective plane test picture；
Described judge module determines for the color of the described perspective plane test each pixel of picture being compared with described reference colour needs to carry out the non-standard color pixel of color correct；
Described color correct module obtains the correction color of each non-standard color pixel for described non-standard color pixel is carried out color correct；
Described projection module is for during projection, using corresponding correction color to project described non-standard color pixel on described perspective plane.
In an embodiment of the present invention, described judge module includes that color obtains submodule and comparison sub-module；
Described color obtains submodule for obtaining the color of the described perspective plane test each pixel of picture；
Described comparison sub-module is for judging that the color of described each pixel is the most identical with described reference colour, as no, it is determined that this pixel is non-standard color pixel；Otherwise, it determines this pixel is Standard Colors pixel.
In an embodiment of the present invention, described color correct module includes that background color determines that submodule, foreground color determine submodule and search submodule；
Described background color determine submodule for using described non-standard color pixel color in described perspective plane test picture as the background color of this pixel；
Described foreground color determines color corresponding to content that submodule will the project foreground color as this pixel for obtaining described non-standard color pixel；
Described lookup submodule finds the corresponding best image color correction color as this pixel for the background color according to described non-standard color pixel and foreground color in the colour atla conversion table pre-set；Described colour atla conversion table comprises the best image color that each background color is corresponding with foreground color.
In an embodiment of the present invention, also including that colour atla conversion table arranges module, described colour atla conversion table arranges module and includes that the first background color selects submodule, the first testing background color to determine submodule, the first foreground color selection submodule and the first adjustment submodule；
Described first background color selects submodule for selecting color C from standard color card range tableiAs background color, described i is more than or equal to 1, the color sum comprised by described standard color card range table less than or equal to n, described n；
Described first testing background color determines that submodule is for testing the testing background color on perspective plane using described background color and described reference colour as the first test perspective plane and second；
Described first foreground color selects submodule for selecting color C from described standard color card range tablejAs foreground color, with on described foreground color content projected test images respectively to described first test perspective plane and on the second test perspective plane；Described j is more than or equal to 1, the color sum comprised by described standard color card range table less than or equal to n, described n；
Described first adjusts submodule for adjusting the test color of image on described first test perspective plane and make its display effect preferably or display effect being consistent with the test image display effect on described second test perspective plane, will final color best image color Z corresponding with described foreground color as described background color after adjustmentijRecorded in colour atla conversion table；
Or described colour atla conversion table arranges module and includes selecting submodule, the second foreground color to select submodule, the second testing background color to determine by the second background color submodule and second adjusts submodule；
Described second background color selects submodule for selecting color C from standard color card range tableiAs background color, described i is more than or equal to 1, the color sum comprised by described standard color card range table less than or equal to n, described n；
Described second testing background color determine submodule for using described background color as test perspective plane testing background color；
Described second foreground color selects submodule for selecting color C from described standard color card range tablejAs foreground color, with on described foreground color content projected test images to described test perspective plane；Described j is more than or equal to 1, the color sum comprised by described standard color card range table less than or equal to n, described n；
Described second adjusts submodule makes its display effect reach optimal for adjusting the test color of image on described test perspective plane, best image color Z that color after finally adjusting is corresponding with described foreground color as described background colorijRecorded in colour atla conversion table.
In order to solve the problems referred to above, present invention also offers a kind of projector equipment, including projector, image acquisition device and processor；Described projector is used for projecting full reference colour content to perspective plane；Described image acquisition device is after in the described projector full reference colour content of projection to perspective plane, and acquired projections face present displayed content obtains perspective plane test picture；Described processor determines for the color of the described perspective plane test each pixel of picture being compared with described reference colour needs to carry out the non-standard color pixel of color correct, described non-standard color pixel is carried out color correct and obtains the correction color of each non-standard color pixel, and when described projector projects on described perspective plane, control described projector and use corresponding correction color to project described non-standard color pixel.
In an embodiment of the present invention, described image acquisition device is photo module.
The invention has the beneficial effects as follows:
Method for controlling projection, device and the projector equipment that the present invention provides, before formal projection, projects full reference colour content to perspective plane, and then acquired projections face present displayed content obtains perspective plane test picture；Perspective plane is tested the color of each pixel of picture compare with reference colour and determine the non-standard color pixel needing to carry out color correct；Non-standard color pixel is carried out color correct and obtains the correction color of each non-standard color pixel；When formally projecting, the non-standard color pixel on perspective plane then use the correction color of correspondence project.Owing to the present invention has carried out color correct to the non-standard color pixel on perspective plane, and use revised color to project when projection for these pixels, the impact on projection picture of the non-standard color pixel can be reduced, therefore can there is no projection screen, or have a stain in projection screen, projection wall or during ambient light colored, promote the color rendition degree of projection picture, promote projection quality, and then promote the satisfaction of Consumer's Experience.
Accompanying drawing explanation
The method for controlling projection schematic flow sheet that Fig. 1 provides for the embodiment of the present invention one；
The schematic flow sheet of the determination non-standard color pixel that Fig. 2 provides for the embodiment of the present invention one；
The schematic flow sheet carrying out color correction process that Fig. 3 provides for the embodiment of the present invention one；
The schematic flow sheet that colour atla conversion table is set that Fig. 4 provides for the embodiment of the present invention one；
Fig. 5 provide for the embodiment of the present invention one another schematic flow sheet of colour atla conversion table is set；
The test perspective plane schematic diagram that Fig. 6 provides for the embodiment of the present invention one；
The projection control structural representation that Fig. 7 provides for the embodiment of the present invention two；
Another projection control structural representation that Fig. 8 provides for the embodiment of the present invention two；
The projector equipment structural representation that Fig. 9 provides for the embodiment of the present invention three；
Figure 10 determines process schematic for the color value of each pixel of projection wall that the embodiment of the present invention three provides；
The formal projection process schematic diagram that Figure 11 provides for the embodiment of the present invention three.
Detailed description of the invention
Combine accompanying drawing below by detailed description of the invention the present invention is described in further detail.
Embodiment one:
Refer to shown in Fig. 1, the method for controlling projection in the present embodiment includes:
Step 101: before formal projection, projects full reference colour content to perspective plane, and then acquired projections face present displayed content obtains perspective plane test picture；
Step 102: perspective plane is tested the color of each pixel of picture and compares with reference colour and determine the non-standard color pixel needing to carry out color correct；
Step 103: non-standard color pixel is carried out color correct and obtains the correction color of each non-standard color pixel；
Step 104: when the most formally projecting, uses corresponding correction color to project non-standard color pixel on this perspective plane.
Visible the present embodiment can identify the non-standard color pixel on perspective plane before formal projection, and the non-standard color pixel identified can be carried out color correct, then revised color is used to project when formal projection for these pixels, the impact on projection picture of the non-standard color pixel can be reduced, therefore can there is no projection cloth, or have a stain in projection cloth, projection wall or under the non-standard projection environment such as ambient light colored, promote the color rendition degree of projection picture, promote projection quality, and then promote the satisfaction of Consumer's Experience.
Reference colour in above-mentioned steps 101 is primarily selected as identical with the color of standard projection face (such as standard projection curtain).Owing to the color on existing standard perspective plane is typically both configured to white, therefore the reference colour in the present embodiment is set to white.But it is to be understood that, the reference colour in the present embodiment is not limited in white, and it can change along with the change of standard projection face color, it might even be possible to according to the change that the demand of user is corresponding.
In above-mentioned steps 102, determine and on perspective plane, need the non-standard color pixel carrying out color correct shown in Figure 2, including:
Step 1021: obtain the color of the perspective plane test each pixel of picture, specifically can obtain the rgb value of each pixel color；
Step 1022: judge the color of each pixel the most identical with reference colour (specifically may determine that whether the color rgb value of each pixel is equal to the rgb value of reference colour or in the range of the rgb value of reference colour) respectively, as no, go to step 1023；Otherwise, step 1024 is gone to:
Step 1023: determine that this pixel is non-standard color pixel.
Step 1024: determine that this pixel is Standard Colors pixel.
In above-mentioned steps 1022, perspective plane can be the projection cloth of specialty, it is also possible to be various metopes etc..The color of the pixel on perspective plane is different from reference colour to be likely due to perspective plane self and with color or there is stain or ambient light causes with situations such as colors.In above-mentioned steps 1024, be defined as Standard Colors pixel due to its color consistent with reference colour, therefore need not additionally carry out color correct.
In above-mentioned steps 103, the non-standard color pixel confirmed is carried out color correct shown in Figure 3, including:
Step 1031: using non-standard color pixel color in perspective plane test picture as the background color of this pixel；
Step 1032: obtain color corresponding to the content that will project of the non-standard color pixel foreground color as this pixel；
Step 1033: background color and foreground color according to non-standard color pixel find the corresponding best image color correction color as this pixel in the colour atla conversion table pre-set；The colour atla conversion table herein pre-set comprises the best image color that each background color is corresponding with foreground color.
In the present embodiment, the process pre-setting colour atla conversion table is shown in Figure 4, including:
Step 401: select color C from standard color card range tableiAs background color, i herein is more than or equal to 1, less than or equal to n, i=i+1；The color sum that n is comprised by standard color card range table；
Step 402: the background color selected and reference colour are tested the testing background color on perspective plane as the first test perspective plane and second, also will first test perspective plane and second test perspective plane be respectively set to this background color and background colour, the first test perspective plane in the present embodiment with the second test perspective plane in addition to testing background color is different, other the most identical；
Step 403: select color C from standard color card range tablejAs foreground color, with on this foreground color content projected test images respectively to the first test perspective plane and on the second test perspective plane；J is more than or equal to 1, less than or equal to n, j=j+1；The color sum that n is comprised by standard color card range table；
Step 404: adjust the test color of image on the first test perspective plane and makes its display effect consistent with the test image display effect on the second test perspective plane, will final color best image color Z corresponding with foreground color as current background color after adjustmentijRecorded in colour atla conversion table.
Colour atla conversion table setting up procedure shown in Fig. 4 by means of the comparison of standard testing perspective plane (the i.e. second test perspective plane) upper figure, to be adjusted for standard with the figure on this standard testing perspective plane.But it is to be understood that, the present embodiment also can not use standard testing perspective plane to be configured, such as, shown in Figure 5, including:
Step 501: select color C from standard color card range tableiAs background color, i herein is more than or equal to 1, less than or equal to n, i=i+1；The color sum that n is comprised by standard color card range table；
Step 502: using selected background color as the testing background color on test perspective plane, also will test perspective plane and be set to this background color；
Step 503: select color C from standard color card range tablejAs foreground color, with on prospect color content projected test images to described test perspective plane；J is more than or equal to 1, less than or equal to n, j=j+1；The color sum that n is comprised by standard color card range table；
Step 504: the test color of image adjusted on test perspective plane makes its display effect reach optimal, color best image color Z corresponding with described foreground color as described background color after finally adjustingijRecorded in colour atla conversion table.The optimal Rule of judgment of the display effect of this step specifically can be arranged according to different application scenarios is selected, such as requiring the best application scenarios of definition, then to could be arranged to display resolution best for its Rule of judgment.
The test image projecting in the present embodiment test on perspective plane can be arbitrary image, such as lines image, circular image etc..It should be appreciated that the test image projected in the present embodiment on the first test perspective plane is preferably identical with the test image projected on the second test perspective plane, in order to comparison analysis.
In order to be better understood from the present invention, below with the setting up procedure shown in Fig. 4, in conjunction with concrete standard color card range table, as a example by reference colour is as white, carry out further exemplary illustration:
1, selecting the colour atla of a set of suitable accuracy as standard color card range table, determine the span of the RGB that each color is corresponding in colour atla, standard color card range table refers to shown in table one:
Table one
| Color designation | R scope | G scope | B scope |
| C1 | R1—R2 | G1—G2 | B1—B2 |
| C2 | R3—R4 | G3—G4 | B3—B4 |
| …… | …… | …… | …… |
| Cn | R2n-1—R2n | G2n-1—G2n | B2n-1—B2n |
Each color C (R, G, B) can determine, according to RGB scope corresponding in table one, colour atla color S that this kind of color is corresponding, and this color S meets following condition:
S=(Rs1≤R&&Rs2 > R) && (Gs1≤G&&Gs2 > G) && (Bs1≤B&&Bs2 > B)
Rs1, Rs2 correspondence R scope in above formula, Gs1, Gs2 correspondence G scope, Bs1, Bs2 correspondence B scope.
2, colour atla conversion table is set
A kind of color C is selected from table onei(Ri, Gi, Bi)=(ri,gi,bi) as background color, i herein is more than or equal to 1, less than or equal to n, i=i+1；
Color C that will selectiWith reference colour i.e. white respectively as the first test test perspective plane and the testing background color on the second test perspective plane；Color C is selected the most again from table onej(R2j-1 R2j, G2j-1 G2j, B2j-1 B2j), as the foreground color of test, in order to make this color possess preferable representativeness, arranges this color C in projectorjRgb value as follows:
(Rj, Gj, Bj)=((R2j-1+R2j)/2, (G2j-1+G2j)/2, (B2j-1+B2j)/2)；
With this foreground color CjContent projected test images respectively is (shown in Figure 6, this image be two straight line upper zones be the first test perspective plane, area below is the second test perspective plane) test on perspective plane with second on the first test perspective plane, adjust the color of straight line on the first test perspective plane, make the straight line consistent (namely essentially identical) on its display effect and the second test perspective plane, and record corresponding color as current background color best image color Z corresponding with foreground colorijRecorded in colour atla conversion table.
Circulation said process, each color and reference colour white in table one is utilized to test the color on perspective plane respectively as the first test perspective plane and second, each color can be found to do foreground color be corresponding best image color and recorded in colour atla conversion table, the colour atla conversion table obtained refers to shown in table two:
Table two
| Background prospect | C1 | C2 | C3 | C4 | …… | Cn |
| C1 | Z11 | Z12 | Z13 | Z14 | …… | Z1n |
| C2 | Z21 | Z22 | Z23 | Z24 | …… | Z2n |
| …… | …… | …… | …… | …… | …… | …… |
| Cn | Zn1 | Zn2 | Zn3 | Zn4 | …… | Znn |
3, formally project
Before formal content projection, in the content of the first projection i.e. white of entirely reference colour to perspective plane, is then taken pictures in perspective plane and obtain perspective plane test picture；(x, y) corresponding rgb value, can find, according to the rgb value of each pixel, color Cn that colour atla is corresponding in standard color card range table to each pixel of this picture that can obtain according to perspective plane test picture；If Cn is white, color of changing the time need not be revised, if not white, it is determined that this pixel is non-standard color pixel, records this pixel background color Cn, obtains perspective plane positive pixel to be repaired point list, refers to shown in table three:
Table three
| Coordinate | 1 | 2 | …… | N |
| 1 | ||||
| 2 | C1 | C1 | ||
| …… | C2 | C3 |
* note: blank this pixel of expression need not revise；
During formal content projection, according to the position (X, Y) of image each pixel X (rgb), calculate its position in table three (x, y), table look-up obtain C (x, y)；If (x, y)=Cx are empty to C, then directly display this color；If not being empty:
1. according to X (rgb) colour atla range table obtain this pixel will colour atla color Ck corresponding to project content, as the foreground color of this pixel；
2., according to background color Cx and foreground color Ck, tabling look-up two obtains the optimal colors Z after this pixel adjusts, namely revised color Z according to background color；
3. at this pixel, (x, y) position utilizes correction color Z to project.
Embodiment two:
Present embodiments provide a kind of projection control, shown in Figure 7, including test picture acquisition module 71, judge module 72, color correct module 73 and projection module 74；
Test picture acquisition module 71 is used for projecting full reference colour content to perspective plane, and then acquired projections face present displayed content obtains perspective plane test picture；
Judge module 72 is compared for the color and reference colour that perspective plane is tested each pixel of picture and is determined the non-standard color pixel needing to carry out color correct；
Color correct module 73 obtains the correction color of each non-standard color pixel for non-standard color pixel is carried out color correct；
Non-standard color pixel on this perspective plane, in time projecting on the projection surface, is used corresponding correction color to project by projection module 74.
Reference colour in the present embodiment is primarily selected as identical with the color of standard projection face (such as standard projection curtain).Owing to the color on existing standard perspective plane is typically both configured to white, therefore the reference colour in the present embodiment is set to white.But it is to be understood that, the reference colour in the present embodiment is not limited in white, and it can change along with the change of standard projection face color, it might even be possible to according to the change that the demand of user is corresponding.
Judge module 72 in the present embodiment includes that color obtains submodule and comparison sub-module；
Color obtains submodule for obtaining the color of the perspective plane test each pixel of picture；
Comparison sub-module is for judging that the color of each pixel is the most identical with reference colour, as no, it is determined that this pixel is non-standard color pixel；Otherwise, it determines this pixel is Standard Colors pixel.
Perspective plane in the present embodiment can be the projection cloth of specialty, it is also possible to be various metopes etc..The color of the pixel on perspective plane is different from reference colour to be likely due to perspective plane self and with color or there is stain or ambient light causes with situations such as colors.Be defined as Standard Colors pixel due to its color consistent with reference colour, therefore need not additionally carry out color correct.
Color correct module 73 includes that background color determines that submodule, foreground color determine submodule and search submodule；
Background color determine submodule for using non-standard color pixel color in perspective plane test picture as the background color of this pixel；
Foreground color determines color corresponding to content that submodule will the project foreground color as this pixel for obtaining non-standard color pixel；
Search submodule and in the colour atla conversion table pre-set, find the corresponding best image color correction color as this pixel for the background color according to non-standard color pixel and foreground color；This colour atla conversion table comprises the best image color that each background color is corresponding with foreground color.
Shown in Figure 8, projection control also includes that colour atla conversion table arranges module 75, and colour atla conversion table arranges module 75 and includes that the first background color selects submodule, the first testing background color to determine submodule, the first foreground color selection submodule and the first adjustment submodule；
First background color selects submodule for selecting color C from standard color card range tableiAs background color, i herein is more than or equal to 1, less than or equal to n, i=i+1；The color sum that n is comprised by standard color card range table；
First testing background color determines that submodule tests the testing background color on perspective plane for the background color that will select and reference colour as the first test perspective plane and second, also will first test perspective plane and second test perspective plane be respectively set to this background color and background colour, the first test perspective plane in the present embodiment with the second test perspective plane in addition to testing background color is different, other the most identical；
First foreground color selects submodule for selecting color C from standard color card range tablejAs foreground color, with on this foreground color content projected test images respectively to the first test perspective plane and on the second test perspective plane；J is more than or equal to 1, less than or equal to n, j=j+1；The color sum that n is comprised by standard color card range table；
First adjusts submodule makes its display effect consistent with the test image display effect on the second test perspective plane for adjusting the test color of image on the first test perspective plane, will final color best image color Z corresponding with foreground color as current background color after adjustmentijRecorded in colour atla conversion table.
Or colour atla conversion table arranges module 75 and includes that the second background color selects submodule, the second foreground color to select submodule, the second testing background color to determine submodule and the second adjustment submodule；
Second background color selects submodule for selecting color C from standard color card range tableiAs background color, i herein is more than or equal to 1, less than or equal to n, i=i+1；The color sum that n is comprised by standard color card range table；
Second testing background color determine submodule for using selected background color as test perspective plane testing background color, also will test perspective plane and be set to this background color；
Second foreground color selects submodule for selecting color C from standard color card range tablejAs foreground color, with on prospect color content projected test images to described test perspective plane；J is more than or equal to 1, less than or equal to n, j=j+1；The color sum that n is comprised by standard color card range table；
Second adjusts submodule makes its display effect reach optimal for adjusting the test color of image on test perspective plane, color best image color Z corresponding with described foreground color as described background color after finally adjustingijRecorded in colour atla conversion table.The optimal Rule of judgment of the display effect of this step specifically can be arranged according to different application scenarios is selected, such as requiring the best application scenarios of definition, then to could be arranged to display resolution best for its Rule of judgment.
The test image projecting in the present embodiment test on perspective plane can be arbitrary image, such as lines image, circular image etc..It should be appreciated that the test image projected in the present embodiment on the first test perspective plane is preferably identical with the test image projected on the second test perspective plane, in order to comparison analysis.
Embodiment three:
Present embodiments providing a kind of projector equipment, this projector equipment can be the various projectors of specialty, it is also possible to is various to possess the mobile terminals such as the mobile phone of projecting function, PAD, shown in Figure 9, including projector 91, image acquisition device 92 and processor 93；Projector in the present embodiment includes the devices such as projecting lamp, and the image acquisition device in the present embodiment is mainly used in shooting picture, and it can be photo module.When projector equipment is existing projector, then can increase image acquisition device 92 on projector equipment at hardware, and make it be controlled by processor, the view data that image acquisition device 92 gathers can be saved in memorizer or the internal memory of projector equipment；When projector equipment is to possess the mobile terminals such as the mobile phone of projecting function, PAD, it is known that directly utilize photographic head that this kind of mobile terminal carries as image acquisition device 92.Concrete, projector 91 is used for projecting full reference colour content to perspective plane；Image acquisition device 92 is after in the projector full reference colour content of projection to perspective plane, and acquired projections face present displayed content obtains perspective plane test picture；For perspective plane is tested the color of each pixel of picture, compare determines the non-standard color pixel needing to carry out color correct to processor 93 with reference colour (such as white), non-standard color pixel is carried out color correct and obtains the correction color of each non-standard color pixel, and when projector 91 the most formally projects, control projector and use corresponding correction color to project the non-standard color pixel on this perspective plane.It is example below in conjunction with this projector equipment, as a example by perspective plane is as projection wall, illustrative to projection control process:
1, take a picture and obtain projection wall color (colour atla) flow process, as shown in Figure 10, including:
Step 1001: initialization solidifies in advance: colour atla range table: ColorRangeTable；Colour atla conversion table: ColorTransformTable；Initialize: projection wall colour atla, bgColorTbale [] []=null；
Step 1002: in projection whole white content to projection wall；
Step 1003: projection wall is taken pictures and obtains the test image content bgBitmap of projection wall；
Step 1004: each pixel of cycle detection whether criteria of right and wrong colored pixels point, specifically can be circulated in such a way:
For (x=0；x++；X < image length)
For (y=0；y++；Y < picture altitude)
PointColor=bgBitmap [x] [y]；
Step 1005: can search colour atla range table according to the RGB of PointColor, obtains colour atla color Ck of this pixel；
Step 1006: judge whether Ck is white, if it is bgColorTable [x] [y]=null；Otherwise, bgColorTable [x] [y]=Ck；
Step 1007: judge whether circulation terminates to go to step 1004 as no；Otherwise, step 1008 is gone to；
Step 1008: flow process terminates, bgColorTable is wall color (colour atla) matrix (i.e. shown in the table three in embodiment one).
2, the conversion of projection content color and projection flow process are shown in Figure 11, including:
Step 1101: obtain and want project content picture material cBitmap；
Step 1102: carry out following detection obtain each pixel will color PC corresponding to project content, endless form is as follows:
For (x=0；x++；X < image length)
For (y=0；y++；Y < picture altitude)
Content color: PC=cgBitmap [x] [y]；
Step 1103: obtain the background color of this pixel: bgCk=bgColorTable [x] [y]；
Step 1104: judge whether bgCk is empty, if it is the content of this pixel is not revised, and goes to step 1102；Otherwise go to step 1105；
Step 1105: according to bgCK (background color), PC (foreground color) from colour atla conversion table ColorTransformTable obtain revised color Z:ColorTransformTable [bgCk [and [Ck], revise content:
CBitmap [x] [y]=ColorTransformTable [bgCk [[Ck]
Step 1106: judge whether circulation terminates, without then going to step 1102；Otherwise go to step 1107；
Step 1107: the content for after these non-standard color pixel projection transform: cBitmap.
Above content is to combine specific embodiment further description made for the present invention, it is impossible to assert the present invention be embodied as be confined to these explanations.For general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, it is also possible to make some simple deduction or replace, all should be considered as belonging to protection scope of the present invention.
Claims (11)
1. a method for controlling projection, it is characterised in that including:
Projecting full reference colour content to perspective plane, then acquired projections face present displayed content obtains perspective plane test picture；
Color and the described reference colour of the described perspective plane test each pixel of picture are compared and determines and need to carry out the non-standard color pixel of color correct；
Described non-standard color pixel is carried out color correct and obtains the correction color of each non-standard color pixel；
On described perspective plane during projection, corresponding correction color is used to project described non-standard color pixel.
2. method for controlling projection as claimed in claim 1, it is characterised in that described determine need the non-standard color pixel carrying out color correct to include:
Obtain the color of the described perspective plane test each pixel of picture；
Judge that the color of described each pixel is the most identical with described reference colour, as no respectively, it is determined that this pixel is non-standard color pixel；Otherwise, it determines this pixel is Standard Colors pixel.
3. method for controlling projection as claimed in claim 1 or 2, it is characterised in that described non-standard color pixel is carried out color correct and includes:
Using described non-standard color pixel color in described perspective plane test picture as the background color of this pixel；
Obtain color corresponding to content that described non-standard color pixel will the project foreground color as this pixel；
Background color and foreground color according to described non-standard color pixel find the corresponding best image color correction color as this pixel in the colour atla conversion table pre-set；Described colour atla conversion table comprises the best image color that each background color is corresponding with foreground color.
4. method for controlling projection as claimed in claim 3, it is characterised in that described in pre-set colour atla conversion table and include:
Color C is selected from standard color card range tableiAs background color, described i is more than or equal to 1, the color sum comprised by described standard color card range table less than or equal to n, described n；
Described background color and described reference colour are tested the testing background color on perspective plane as the first test perspective plane and second；
Color C is selected from described standard color card range tablejAs foreground color, with on described foreground color content projected test images respectively to described first test perspective plane and on the second test perspective plane；Described j is more than or equal to 1, the color sum comprised by described standard color card range table less than or equal to n, described n；
Adjusting the test color of image on described first test perspective plane makes its display effect consistent with the test image display effect on described second test perspective plane, will final color best image color Z corresponding with described foreground color as described background color after adjustmentijRecorded in colour atla conversion table；
Or,
Color C is selected from standard color card range tableiAs background color, described i is more than or equal to 1, the color sum comprised by described standard color card range table less than or equal to n, described n；
Using described background color as the testing background color testing perspective plane；
Color C is selected from described standard color card range tablejAs foreground color, with on described foreground color content projected test images to described test perspective plane；Described j is more than or equal to 1, the color sum comprised by described standard color card range table less than or equal to n, described n；
Adjusting the test color of image on described test perspective plane makes its display effect reach optimal, color best image color Z corresponding with described foreground color as described background color after finally adjustingijRecorded in colour atla conversion table.
5. method for controlling projection as claimed in claim 1 or 2, it is characterised in that described reference colour is white.
6. a projection control, it is characterised in that include testing picture acquisition module, judge module, color correct module and projection module；
Described test picture acquisition module is used for projecting full reference colour content to perspective plane, and then acquired projections face present displayed content obtains perspective plane test picture；
Described judge module determines for the color of the described perspective plane test each pixel of picture being compared with described reference colour needs to carry out the non-standard color pixel of color correct；
Described color correct module obtains the correction color of each non-standard color pixel for described non-standard color pixel is carried out color correct；
Described projection module is for during projection, using corresponding correction color to project described non-standard color pixel on described perspective plane.
7. projection control as claimed in claim 6, it is characterised in that described judge module includes that color obtains submodule and comparison sub-module；
Described color obtains submodule for obtaining the color of the described perspective plane test each pixel of picture；
Described comparison sub-module is for judging that the color of described each pixel is the most identical with described reference colour, as no, it is determined that this pixel is non-standard color pixel；Otherwise, it determines this pixel is Standard Colors pixel.
Projection control the most as claimed in claims 6 or 7, it is characterised in that described color correct module includes that background color determines that submodule, foreground color determine submodule and search submodule；
Described background color determine submodule for using described non-standard color pixel color in described perspective plane test picture as the background color of this pixel；
Described foreground color determines color corresponding to content that submodule will the project foreground color as this pixel for obtaining described non-standard color pixel；
Described lookup submodule finds the corresponding best image color correction color as this pixel for the background color according to described non-standard color pixel and foreground color in the colour atla conversion table pre-set；Described colour atla conversion table comprises the best image color that each background color is corresponding with foreground color.
9. projection control as claimed in claim 8, it is characterized in that, also including that colour atla conversion table arranges module, described colour atla conversion table arranges module and includes that the first background color selects submodule, the first testing background color to determine submodule, the first foreground color selection submodule and the first adjustment submodule；
Described first background color selects submodule for selecting color C from standard color card range tableiAs background color, described i is more than or equal to 1, the color sum comprised by described standard color card range table less than or equal to n, described n；
Described first testing background color determines that submodule is for testing the testing background color on perspective plane using described background color and described reference colour as the first test perspective plane and second；
Described first foreground color selects submodule for selecting color C from described standard color card range tablejAs foreground color, with on described foreground color content projected test images respectively to described first test perspective plane and on the second test perspective plane；Described j is more than or equal to 1, the color sum comprised by described standard color card range table less than or equal to n, described n；
Described first adjusts submodule for adjusting the test color of image on described first test perspective plane and make its display effect preferably or display effect being consistent with the test image display effect on described second test perspective plane, will final color best image color Z corresponding with described foreground color as described background color after adjustmentijRecorded in colour atla conversion table；
Or described colour atla conversion table arranges module and includes selecting submodule, the second foreground color to select submodule, the second testing background color to determine by the second background color submodule and second adjusts submodule；
Described second background color selects submodule for selecting color C from standard color card range tableiAs background color, described i is more than or equal to 1, the color sum comprised by described standard color card range table less than or equal to n, described n；
Described second testing background color determine submodule for using described background color as test perspective plane testing background color；
Described second foreground color selects submodule for selecting color C from described standard color card range tablejAs foreground color, with on described foreground color content projected test images to described test perspective plane；Described j is more than or equal to 1, the color sum comprised by described standard color card range table less than or equal to n, described n；
Described second adjusts submodule makes its display effect reach optimal for adjusting the test color of image on described test perspective plane, best image color Z that color after finally adjusting is corresponding with described foreground color as described background colorijRecorded in colour atla conversion table.
10. a projector equipment, it is characterised in that include projector, image acquisition device and processor；Described projector is used for projecting full reference colour content to perspective plane；Described image acquisition device is after in the described projector full reference colour content of projection to perspective plane, and acquired projections face present displayed content obtains perspective plane test picture；Described processor determines for the color of the described perspective plane test each pixel of picture being compared with described reference colour needs to carry out the non-standard color pixel of color correct, described non-standard color pixel is carried out color correct and obtains the correction color of each non-standard color pixel, and when described projector projects on described perspective plane, control described projector and use corresponding correction color to project described non-standard color pixel.
11. projector equipments as claimed in claim 10, it is characterised in that described image acquisition device is photo module.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510009605.1A CN105825796A (en) | 2015-01-08 | 2015-01-08 | Projection control method, projection control device and projection device |
| PCT/CN2015/075350 WO2016110008A1 (en) | 2015-01-08 | 2015-03-30 | Method and device for projection control, projection device, and storage medium |
| PCT/CN2015/086275 WO2016110094A1 (en) | 2015-01-08 | 2015-08-06 | Method and device for projection control and projection device |
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| CN201510009605.1A CN105825796A (en) | 2015-01-08 | 2015-01-08 | Projection control method, projection control device and projection device |
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| CN106791749A (en) * | 2017-02-09 | 2017-05-31 | 微鲸科技有限公司 | Color correction method for projection picture and projector |
| CN107613049A (en) * | 2017-08-31 | 2018-01-19 | 河南首弘电子科技有限公司 | A kind of projection mobile phone and method for controlling projection of adjustable projected background color |
| WO2019010917A1 (en) * | 2017-07-12 | 2019-01-17 | 上海斐讯数据通信技术有限公司 | Method and system for color calibration of projection image |
| CN111510693A (en) * | 2019-01-30 | 2020-08-07 | 中强光电股份有限公司 | Projection system and image color correction method |
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| CN110611801B (en) * | 2019-10-08 | 2021-08-20 | 歌尔光学科技有限公司 | Method and device for detecting dirt of projection module, readable storage medium and projector |
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| WO2016110008A1 (en) | 2016-07-14 |
| WO2016110094A1 (en) | 2016-07-14 |
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