CN104601915B - Projection system and brightness adjusting method thereof - Google Patents
Projection system and brightness adjusting method thereof Download PDFInfo
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Abstract
A projection system and its brightness adjustment method, wherein the projection system includes multiple projection devices, the projection device projects multiple pictures on a screen, the pictures form a union region and have an overlap region, the brightness adjustment method includes: capturing the picture on the screen to obtain image information; selecting a target area from the image information to obtain a fused image of the picture corresponding to the target area; executing a genetic algorithm according to brightness information in the target region and obtaining an optimal parameter set; and enabling the projection device to project according to the optimal parameter set, wherein the target area is smaller than the union area and comprises at least one part of the overlapping area. The invention can automatically adjust a plurality of projection devices in the projection system, so that a plurality of projected pictures have more uniform brightness in the overlapping area.
Description
Technical field
The present invention is about a kind of optical projection system, and in particular to a kind of optical projection system with multiple projection arrangements
And its luminance regulating method.
Background technology
To manufacture large-sized display at present is to have comparable difficulty, and its display effect is not only bad, cost with sell
Valence is also fairly expensive.Therefore, when having multiple spectators while sharing picture, it will usually the content will be shared using projector
On projection to large screen or wall.And more preferably share environment to reach, the prior art can also increase the number of projector, make
Shared picture is obtained to be substantially improved with brightness.
Fig. 1 is the schematic diagram of existing optical projection system.Please refer to Fig. 1, existing optical projection system 100 have projection arrangement 112 with
Projection arrangement 114.The picture that this optical projection system 100 can be such that projection arrangement 112 is projected out with projection arrangement 114 is Chong Die, to carry
The drop shadow effect of high picture.In more detail, projection arrangement 112 and projection arrangement 114 can be respectively by pictures 122 and picture 124
It is incident upon on screen 10, wherein partly overlapping image is identical in region 130 with picture 124 for picture 122.
However, since two projection arrangements 112 and projection arrangement 114 are projected by different angle projection image
Picture 122 will not be identical in region 130 with the Luminance Distribution of picture 124.In order to enable picture in overlapping region 130
Brightness is consistent, the mode that the prior art is only through eye-observation and manually adjusts, by projection arrangement 120 and projection arrangement 130
The brightness projected is adjusted, but this mode manually adjusted is considerably inconvenient and time-consuming for the user.
Invention content
The present invention provides a kind of optical projection system and its luminance regulating method, can be in adjust automatically this optical projection system it is multiple
Projection arrangement makes multiple pictures that it is projected have more uniform brightness in overlapping region.
The present invention proposes a kind of luminance regulating method of optical projection system, and the wherein optical projection system includes multiple projection arrangements,
By multiple image projections on a screen, the picture forms a collection region and has an overlapping region projection arrangement,
The luminance regulating method includes：The picture on the screen is captured to obtain an image information；It is selected from the image information
One target area, to obtain the fusion evaluation of the picture correspondence in the region of interest；It is bright according to one in the target area
It spends information and executes a simple genetic algorithms, and obtain an optimal parameter group；And make the projection arrangement according to the optimal parameter group
It is projected, wherein the target area is less than the connection collection region and includes at least part of overlapping region.
The present invention proposes a kind of optical projection system, including：Multiple projection arrangements, to by multiple image projections in a screen
On, the picture forms a collection region and has an overlapping region；One image capture unit, to capture the institute on the screen
Picture is stated to obtain an image information；And a control unit, it is coupled to the projection arrangement and the image capture unit, the control
Unit processed selects a target area from the image information, to obtain the fusion shadow of the picture correspondence in the region of interest
Picture executes a simple genetic algorithms according to the luminance information in the target area and obtains an optimal parameter group, and makes described
Projection arrangement is projected according to the optimal parameter group, and wherein the target area is less than the connection collection region and includes at least part
The overlapping region.
Based on above-mentioned, the present invention optical projection system with its luminance regulating method, control unit can be filled from multiple projections
It sets and selects target area in the multiple pictures being projected out, and can be drilled according to the Luminance Distribution in this target area to execute gene
Algorithm is adapted to the Tuning function of adjustment optical projection system or/and the width of overlapping region so as to finding out.Thus, described
The fusion picture that projection arrangement is projected out according to this Tuning function can have more uniform brightness, and user can more facilitate
The more uniform picture of brightness is projected out by this optical projection system.
Description of the drawings
Fig. 1 is the schematic diagram of existing optical projection system.
Fig. 2A is the schematic diagram according to a kind of optical projection system of one embodiment of the invention.
Fig. 2 B are the imaging schematic diagrams of the optical projection system of Fig. 2A.
Fig. 3 is the luminance regulating method flow chart according to the optical projection system of one embodiment of the invention.
Fig. 4 A and Fig. 4 B select the schematic diagram of target area in unit self imaging information in order to control.
Fig. 5 is to illustrate that control unit executes the method flow diagram of simple genetic algorithms.
The multiple projection arrangements of an embodiment of Fig. 6 A to Fig. 6 D to illustrate the invention project fusion picture using Tuning function
The schematic diagram in face.
Fig. 7 A to Fig. 7 C are to illustrate to bring the obtained functional digraph of Tuning function into different candidate parameter groups.
Wherein, symbol is simply described as follows in attached drawing：
100、200：Optical projection system
10、20：Screen
112、114、210、220：Projection arrangement
130、60、A1、A1、A3、C、T：Region
122、124、212、222、600、602、604、606：Picture
230：Image capture unit
240：Control unit
H1、H2、Ht：It is high
W1、W2、Wt、W6：It is wide
S302~S310：Each step of luminance regulating method of optical projection system
S502~S514：Execute each step of simple genetic algorithms.
Specific implementation mode
To make the foregoing features and advantages of the present invention clearer and more comprehensible, special embodiment below, and coordinate institute's accompanying drawings
It is described in detail below.
Fig. 2A is the schematic diagram according to a kind of optical projection system of one embodiment of the invention.Fig. 2 B are the optical projection systems of Fig. 2A
Imaging schematic diagram.Please refer to Fig. 2A and Fig. 2 B, optical projection system 200 includes multiple projection arrangements, i.e. the first projection arrangement 210 with
Second projection arrangement 220 and image capture unit 230 and control unit 240.
First projection arrangement 210 and the second projection arrangement 220 are, for example, optical projection apparatus or digital projection device respectively
Deng.First projection arrangement 210 is the first picture 212 to be projected on screen 20, and the second projection arrangement 220 is to by second
Picture 222 is projected on screen 20.It should be noted that above-mentioned first projection arrangement 210, the second projection arrangement 220 and dividing
The first picture 212 and the second picture 222 not being projected out are for example, the present embodiment is not intended to limit projection arrangement and its projection
The quantity of the picture gone out.Also that is, in other embodiment, optical projection system 200 can configure more projection arrangements, therefore these are thrown
More pictures of image device projectable are on screen 20.
Image capture unit 230 is, for example, the various dresses that can be used for pick-up image information such as general video camera or camera
It sets.Here, image capture unit 230 is capturing the first picture 212 on screen 20 and the second picture 222 to obtain image letter
Breath so that control unit 240 is adjusted optical projection system 200 according to image information.
Control unit 240 is, for example, to be coupled to the throwing of the first projection arrangement 210, second with the connection types such as wired or wireless
Image device 220 and image capture unit 230, and then control its operation.Control unit 240 may include memory and processing
Device, wherein memory can store the image information that image capture unit 230 is captured, and processor can be directed to image information and carry out
It calculates.Specifically, control unit 240 can according to the image information that image capture unit 230 is captured come to optical projection system into
Row adjustment, keeps the picture brightness that the first projection arrangement 210 and the second projection arrangement 220 are projected out uniform.
Other one is mentioned that, in one embodiment, above-mentioned first projection arrangement 210, the second projection arrangement 220, image are picked
It takes device 230 and control unit 240 that can also be integrated into same device, e.g. there is of photograph, photography and projecting function
People's computer, notebook computer, smartphone and tablet computer, invention is not limited thereto.
It is beneath to arrange in pairs or groups Fig. 2A and Fig. 2 B to illustrate the detailed step of the luminance regulating method of optical projection system 200.Fig. 3 be according to
According to the luminance regulating method flow chart of the optical projection system of one embodiment of the invention.Referring to Fig. 2A, Fig. 2 B and Fig. 3, in
In step S302, the first picture 212 can be projected on screen 20 by the first projection arrangement 210, and the second projection arrangement 220 can be by the
Two pictures 222 are projected on screen 20.Furthermore, the first projection arrangement 210 can will be projected with the second projection arrangement 220
The first picture 212 and the second picture 222 partly overlap and (partly overlap in the C of region), and this partly overlapping picture phase
Together.
In step S304, image capture unit 230 can capture the first picture 212 and the second picture 222, to obtain correspondence
In the image information of the first picture 212 and the second picture 222.Then in step S306, the meeting self imaging information of control unit 240
Target area is selected, to obtain the first picture 212 and the second corresponding fusion evaluation in this target area of picture 222.
Specifically, Fig. 4 A and Fig. 4 B select the schematic diagram of target area in 240 self imaging information of unit in order to control.It please join
It is the image information corresponding to the first picture 212 according to Fig. 4 A, region A1, region A2 is the image letter corresponding to the second picture 222
Breath, and control unit 240 can be formed by connection collection region A3 (such as thick frame) from region A1 and region A2 and select target area T
(such as oblique line is painted).As an example it is assumed that a height of H of connection collection region A31, width W1, wherein high H1Less than wide W1, then target area
The high H of domain TtE.g. high H1Top and bottom (H is individually subtracted1/ 8), the wide W of target area TtE.g. wide W1Left end
(W is individually subtracted with right end1/4).Alternatively, please referring to Fig. 4 B, it is assumed that a height of H of connection collection region A32, width W2, wherein high H2Greatly
In wide W2, then the high H of target area TtE.g. high H2Top and bottom (H is individually subtracted2/ 4), the wide W of target area Tt
E.g. wide W2Left end and right end (W is individually subtracted2/8).Target area T (is the directions W in Fig. 4 A on overlapping direction；In
It is the directions H in Fig. 4 B) it at least should be including a part of overlapping region C.Certainly, the present embodiment is not intended to limit method described above to select
Go out target area, in other embodiment, other calculation formula also can be used, to be selected from the corresponding collection region of multiple pictures
Go out target area.
It is noted that since the target area T-phase of the present embodiment is when in the first picture 212 and the second picture 222
The connection of image information collects the range after region A3 reduces and includes at least part of overlapping region, therefore in the T of target area
The fusion evaluation of first picture 212 and the second picture 222 can have smaller picture area to reduce data processing amount, and due to
The present embodiment can exclude the noise in image information other than the T of target area, therefore in subsequent step, and control unit 240 can essence
The overlapping region part for being directed to the fusion evaluation of target area T accurately is calculated to obtain accurate parameter group, and then is made
First projection arrangement 210 is projected with the second projection arrangement 220 according to this parameter group.
Then, in step S308, control unit 240 can execute simple genetic algorithms according to the luminance information in the T of target area
And obtain optimal parameter group.In the present embodiment, the first projection arrangement 210 and the second projection arrangement 220 can be appropriate using one
Tuning function adjust the first picture 212 and the second picture 222 that are projected out, and the purpose of simple genetic algorithms is to seek
Look for this Tuning function appropriate.That is, control unit 240 can generate multiple adjustment letters according to the concept of simple genetic algorithms
Number, wherein each Tuning function can have multiple parameters, and control unit 240 can be by the group of these parameters in each Tuning function
It closes (i.e. candidate parameter group) and is considered as a chromosome, and these parameters are respectively corresponding to multiple genes in this chromosome.It lifts
For example, for Tuning function f (x)=AnxBn+A(n-1)xB(n-1)+...+A0xBoFor, the parameter is, for example, An~A0
And Bn~B0, wherein n is positive integer, and An~A0And Bn~B0It then can be corresponding to multiple genes in a chromosome (specifically
It is bright to see below).Thus, after simple genetic algorithms, control unit 240 then can get a most suitable candidate parameter group,
It is used as the multiple parameters of Tuning function, and then obtains Tuning function appropriate.Above-mentioned Tuning function is for example, this implementation
Example does not limit Tuning function.In another embodiment, control unit 240 can be according to the brightness letter in the T of target area
Breath executes the width that simple genetic algorithms finds optimal overlapping region.In another embodiment, control unit 240 can foundation
Luminance information in the T of target area executes simple genetic algorithms and finds optimal Tuning function and the width of overlapping region, also
I.e. candidate parameter group includes each parameter of Tuning function and the parameter of overlapping region width.
Finally, in step S310, the first projection arrangement 210 can be drilled using above-mentioned via gene with the second projection arrangement 220
What algorithm was obtained there is the Tuning function of most suitable candidate parameter group to be projected so that make the first picture projected
212 and second picture 222 illuminance distribution and make overlapping region unobvious.
Beneath executed again for an embodiment above-mentioned control unit 240 is described in detail and obtains optimal parameter at simple genetic algorithms
Each step of group.
Fig. 5 is to illustrate that control unit 240 executes the method flow diagram of simple genetic algorithms.Fig. 5 is please referred to, in step S502
In, due to the initial step of simple genetic algorithms be randomly generate predetermined quantity chromosome (such as 200 or 300 dyeing
Body), and candidate parameter group is can be described as in this chromosome, therefore control unit 240 can be in first execution cycle (namely in gene
The initial step of algorithm) in randomly generate multiple times corresponding to multiple Tuning functions or/and the width of multiple overlapping regions
Select parameter group.Further, since each chromosome carries the various assortments of genes randomly generated, therefore each chromosome has herein
Equal number of multiple genes, the gene correspond respectively to the multiple parameters of each candidate parameter group.
In step S504, control unit 240 can using these candidate parameter groups as an execution cycle in multiple female generations
Candidate parameter group, and chosen program, mating are calculated and are calculated with mutation to generate multiple filial generation candidate parameter groups.Specifically,
Control unit 240 can execute option program, to be used as from above-mentioned mother for the candidate parameter group for selecting part in candidate parameter group
The foundation of sub- candidate parameter group is subsequently generated, the wherein method of option program can be Wheel-type back-and-forth method (Roulette
Wheel Selection), competitive mode back-and-forth method (Tournament Selection) or grade wheel disc method (Rank Based
Wheel Selection) etc., it is without being limited thereto.When executing mating calculating, control unit 240 can be exchanged general with genetic fragment
It reads, two selected mothers is swapped for the partial parameters in candidate parameter group, to generate two new candidate parameter groups,
The mode of calculating of wherein mating can be common single-point, 2 points, multiple spot or uniform mating calculation, without being limited thereto.Later,
Control unit 240 can be according to preset mutation rate (such as 0.001<P<0.002, wherein P are mutation rate), to judge
Whether the new candidate parameter group of the generation needs to execute mutation calculating.Also, for the candidate for needing execution mutation to calculate
Parameter group, control unit 240 are, for example, to randomly generate parameter value to replace the partial parameters in this candidate parameter group.Such one
Come, these obtained new candidate parameter groups after hypergamasis is calculated and calculated with mutation are filial generation candidate parameter group.
In step S506, control unit 240 can join the parameter in all candidate parameter groups obtained, i.e. filial generation candidate
Parameter in array, for the parameter in candidate parameter group, brings Tuning function or/and the width of overlapping region into respectively with mother, and
Make the first projection arrangement 210 and the second projection arrangement 220 using these Tuning functions or/and the width of overlapping region by first
Picture 212 and the second picture 222 are projected on respectively on screen 20, and control unit 240 can calculate in the T of target area and correspond to not
With multiple standard deviations of multiple Luminance Distributions of Tuning function or/and the width of overlapping region, and with the mark of these Luminance Distributions
Quasi- difference is as above-mentioned each filial generation candidate parameter group and each female fitness for candidate parameter group.
Specifically, the first projection arrangement 210 and the second projection arrangement 220 are, for example, the original picture that will be projected out respectively
Face (i.e. original first picture, 212 and second picture 222), is multiplied by Tuning function on the position respective pixel (pixel) respectively
Value, to adjust the brightness of be projected out raw frames.As an example it is assumed that the Tuning function obtained after bringing parameter into is f
(x)：
Wherein x corresponds to wide normalization (normalized) coordinates of pixels of overlapping region in the T of target area, then and first
The raw frames that projection arrangement 210 and the second projection arrangement 220 will be e.g. projected out overlapping region pair in target area
The pixel intensity for answering regular x coordinates, is multiplied by the Tuning function f (x), by the brightness projection after adjustment in screen 20.
Later, correspond to each Tuning function, image capture unit 230 can capture the first picture 212 on screen 20 with
Second picture 222 is to obtain image information, and control unit 240 can be believed according to the image in above-mentioned calculated target area T
Breath calculates the brightness in the T of target area.In one embodiment, the meeting of control unit 240 will be in the image information in the T of target area
RGB (RGB) color input signal be converted into YUV (brightness-chroma) chrominance signal, and with the brightness in YUV chrominance signals
(Y) signal calculates brightness.Whereby, control unit 240 can calculate brightness point in the T of target area according to the calculated brightness of institute
The standard deviation of cloth, and it is used as with this standard deviation the fitness of this candidate parameter group.
In step S508, control unit 240 is according to the size of above-mentioned calculated fitness, and sort all candidate parameters
Group, i.e. filial generation candidate parameter group are with mother for candidate parameter group.Also, in step S510, control unit 240 can be in all candidate ginsengs
In array, the part candidate parameter group of the default screening conditions (such as fitness will meet predetermined threshold level) of aperture unification,
It is used as multiple mothers in next execution cycle for candidate parameter group.In other words, if too high (namely standard deviation is too for fitness
Greatly), then it represents that the first picture 212 and the second picture 222 that the first projection arrangement 210 and the second projection arrangement 220 are projected out
Luminance Distribution is uneven in overlapping region, therefore control unit 240 will not protect the candidate parameter group corresponding to this fitness
It stays.Therefore in order to make the illuminance distribution of picture that projection arrangement 210 and the second projection arrangement 220 be projected out, control unit
240, which can meet fitness the candidate parameter group corresponding to predetermined threshold level, retains, and executes next fortune of simple genetic algorithms according to this
Calculate the period.
In step S512, control unit 240 can judge whether simple genetic algorithms reaches end condition.Here, control unit
240 can determine whether the number for executing the execution cycle of simple genetic algorithms reaches interative computation threshold value.In other embodiments,
Control unit 240 also can determine whether the number for the candidate parameter group for meeting default fitness is more than threshold number, is used as end
The only foundation of condition.
If control unit 240 judges that simple genetic algorithms is not up to end condition, then control unit 240 can repeat above-mentioned step
Rapid S502 to step S512, until simple genetic algorithms reaches end condition.Also, when simple genetic algorithms reaches end condition,
Then as shown in step S514, control unit 240 can choose the candidate ginseng in current all candidate parameter groups with minimum fitness
Array is optimal parameter group.In other words, the parameter in this optimal parameter group will be brought into Tuning function or/and overlapping region
In width, and the first projection arrangement 210 and the second projection arrangement 220 will utilize this Tuning function or/and the width of overlapping region
First picture 212 and the second picture 222 are projected on screen 20 by degree respectively.Namely the first projection arrangement 210 and second
212 and second picture 222 of original first picture that projection arrangement 220 can will be for example projected out, is multiplied by respectively in overlapping region
This value of Tuning function with optimal parameter group on respective pixel position, or/and the width of overlapping region is adjusted, with adjustment
The brightness for the raw frames being projected out.Also, due to the brightness of the first picture 212 and the second picture 222 in the T of target area
Minimum standard deviation is distributed with, therefore the brightness of the first picture 212 and the second picture 222 in overlapping region can more uniformly.
Thus, the first projection arrangement 210 and the second projection arrangement 220 project merge picture and can have more uniform brightness.
Fig. 6 A to Fig. 6 D embodiment first projection arrangements 210 to illustrate the invention and the second projection arrangement 220 utilize
Tuning function merges the schematic diagram of picture to project.Fig. 7 A to Fig. 7 C is illustrate to bring Tuning function institute into different candidate parameter groups
Obtained functional digraph.Fig. 6 A are please referred to, raw frames 600 are that the first projection arrangement 210 and the second projection arrangement 220 are not yet sharp
With the fusion evaluation of the first picture and the second picture that Tuning function is projected.It can be seen that from Fig. 6 A, unjustified function
The brightness irregularities of raw frames 600.
When control unit 240 executes simple genetic algorithms, it is assumed that Tuning function is
Wherein a and p is the parameter in a candidate parameter group, and wherein x corresponds to the overlay region field width in target area 60
Spend W6On regular location of pixels, then this Tuning function with different candidate parameter groups by fashionable the obtained figure of parameter band such as
Shown in Fig. 7 A to 7C.Wherein, it is that (1,1), (1,2) and (1,3) brings Tuning function f into respectively that Fig. 7 A, which are candidate parameter group (a, p),
(x) obtained figure when, Fig. 7 B are that candidate parameter group (a, p) is that (0.5,1), (0.5,2) and (0.5,3) brings adjustment into respectively
Obtained figure when function f (x), Fig. 7 C are that candidate parameter group (a, p) is (1.5,1), (1.5,2) and (1.5,3) band respectively
Enter obtained figure when Tuning function f (x).In another embodiment, the regular picture in the different sections of Tuning function f (x)
The interval limit value (being 0.5 in above formula) of plain position can also be as the ginseng in the candidate parameter group for executing simple genetic algorithms
Number, value can be between 0 to 1.
In addition, the first projection arrangement 210 can be projected using different Tuning functions from the second projection arrangement 220 it is more
A fusion picture.For example, Fig. 6 B and Fig. 6 C are respectively the first projection arrangement 210 and the second projection arrangement 220 by original picture
Face 600 is multiplied by the fusion picture 602 and 604 that different Tuning functions is projected.In one embodiment, the first projection arrangement
210 Tuning functions used in overlapping region are with the second Tuning function used in overlapping region of projection arrangement 220 each
The sum of regular location of pixels x is 1.Later, image capture unit 230 can capture fusion picture (such as fusion picture 602 with
604), and control unit 240 can calculate the standard deviation of Luminance Distribution in target area 60, be used as according to this each in simple genetic algorithms
The fitness of candidate parameter group.Finally, after simple genetic algorithms reaches end condition, control unit 240 can be by optimal parameter group
It brings into Tuning function or/and the width of overlapping region so that the first projection arrangement 210 and the second projection arrangement 220 utilize this
Tuning function projects the fusion picture 606 of brightness uniformity, as shown in Figure 6 D.Thus, due to first in optical projection system 200
The first picture and the second picture brightness uniformity in overlapping region that projection arrangement 210 and the second projection arrangement 220 are projected,
So fusion picture 606 is as being both whole picture that single projection arrangement is launched.
In conclusion in the optical projection system of the present invention and its luminance regulating method, control unit can be filled from multiple projections
It sets and selects target area in the multiple pictures being projected out, and simple genetic algorithms can be executed, adjustment throwing is adapted to find out
The Tuning function of shadow system or/and the width of overlapping region, wherein control unit can utilize the brightness point in the target area
The standard deviation of cloth is used as the fitness in simple genetic algorithms.Thus, the fusion picture that the projection arrangement is projected out
There can be more uniform brightness.In addition, such as the picture that single projection arrangement is projected out, the present invention can reach multiple projection dresses
Set the effect for projecting single fusion picture.Whereby, user can more easily by this optical projection system come be projected out brightness compared with
Uniform picture.
The foregoing is merely present pre-ferred embodiments, the range that however, it is not to limit the invention is any to be familiar with sheet
The personnel of item technology further can be improved and be changed on this basis without departing from the spirit and scope of the present invention, because
This protection scope of the present invention is when being subject to the range that following claims are defined.
Claims (10)
1. a kind of luminance regulating method of optical projection system, which is characterized in that the optical projection system includes multiple projection arrangements, the throwing
By multiple image projections on a screen, the picture forms a collection region and has an overlapping region, the brightness image device
Method of adjustment includes：
The picture on the screen is captured to obtain an image information；
A target area is selected from the image information, to obtain the fusion evaluation of the picture correspondence in the region of interest；
A simple genetic algorithms is executed according to the luminance information in the target area and obtains an optimal parameter group；And
The width that parameter in the optimal parameter group is brought into Tuning function and the overlapping region, so that the projection arrangement is utilized should
The width of Tuning function and the overlapping region is projected,
Wherein the target area is less than the connection collection region and includes at least part of overlapping region.
2. the luminance regulating method of optical projection system according to claim 1, which is characterized in that according in the target area
The luminance information executes the simple genetic algorithms and includes the step of obtaining the optimal parameter group：
A. multiple candidate parameters of the width corresponding to the Tuning function He the overlapping region are randomly generated in an execution cycle
Group, wherein there are each candidate parameter group multiple genes, the gene to correspond respectively to multiple ginsengs in the respectively candidate parameter group
Number；
B. multiple female for candidate parameter group using the candidate parameter group as the execution cycle, and chosen program, mating are counted
It calculates to calculate with mutation and generates multiple filial generation candidate parameter groups；
C., the width that all candidate parameter groups obtained are brought into the Tuning function and the overlapping region respectively, to calculate the mesh
Multiple Luminance Distributions in region are marked, and using the standard deviation of the Luminance Distribution as a fitness of each candidate parameter group；
D. according to the fitness, sort all candidate parameter groups；
E. in all candidate parameter groups, the part candidate parameter group that screening conditions are preset in aperture unification is used as next operation
Multiple mothers in period are for candidate parameter group；
F. repeat the above steps a to step e, reaches an end condition until executing the simple genetic algorithms, and choose and protected at present
The female candidate parameter group for a minimum fitness in candidate parameter group stayed is the optimal parameter group.
3. optical projection system according to claim 2, which is characterized in that the candidate parameter group includes the ginseng of the Tuning function
The width of number and the overlapping region.
4. optical projection system according to claim 3, which is characterized in that making the projection arrangement using the Tuning function and
The width of the overlapping region includes the step of projection：
The picture that the projection arrangement is projected out respectively is multiplied by the Tuning function with the optimal parameter group respectively
Value on respective pixel position, and the width of the overlapping region is adjusted according to the optimal parameter group, it is filled with adjusting the projection
Set the brightness for the picture being projected out.
5. optical projection system according to claim 1, which is characterized in that held according to the luminance information in the target area
Row simple genetic algorithms and the step of obtaining the optimal parameter group includes：
A rgb color input signal in the image information is converted into a YUV chrominance signals, and in the YUV chrominance signals
Luminance signal calculate the luminance information.
6. a kind of optical projection system, which is characterized in that including：
Multiple projection arrangements, to, on a screen, the picture forms a collection region and has one by multiple image projections
Overlapping region；
One image capture unit, to capture the picture on the screen to obtain an image information；And
One control unit is coupled to the projection arrangement and the image capture unit, which selects from the image information
Go out a target area, to obtain the fusion evaluation of the picture correspondence in the region of interest, according to one in the target area
Luminance information executes a simple genetic algorithms and obtains an optimal parameter group, and brings the parameter in the optimal parameter group into adjustment
The width of function and the overlapping region makes the projection arrangement be thrown using the width of the Tuning function and the overlapping region
Shadow,
Wherein the target area is less than the connection collection region and includes at least part of overlapping region.
7. optical projection system according to claim 6, which is characterized in that the control unit executes multiple in an execution cycle
Step, the wherein control unit randomly generate multiple candidate parameters of the width corresponding to the Tuning function He the overlapping region
Group, wherein there are each candidate parameter group multiple genes, the gene to correspond respectively to multiple ginsengs in the respectively candidate parameter group
Number, the control unit is multiple female for candidate parameter group using the candidate parameter group as the execution cycle, and chosen program,
Mating, which calculates to calculate with mutation, generates multiple filial generation candidate parameter groups, all candidate parameter components which will be obtained
The width for not bringing the Tuning function and the overlapping region into, to calculate multiple Luminance Distributions in the target area, and with described bright
A fitness of the standard deviation of distribution as each candidate parameter group is spent, the control unit is all according to the ranking fitness
Candidate parameter group, and the control unit, in all candidate parameter groups, the part candidate ginseng of screening conditions is preset in aperture unification
Array is used as multiple mothers of next execution cycle for candidate parameter group, and repeats respectively step in the execution cycle,
Until executing, the simple genetic algorithms reaches an end condition and the control unit chooses the female generation candidate retained at present
A candidate parameter group with a minimum fitness in parameter group is the optimal parameter group.
8. optical projection system according to claim 7, which is characterized in that the candidate parameter group includes the ginseng of the Tuning function
The width of number and the overlapping region.
9. optical projection system according to claim 8, which is characterized in that described in the projection arrangement will be projected out respectively
Picture is multiplied by value of the Tuning function with the optimal parameter group on respective pixel position respectively, and according to the optimal parameter
Group adjusts the width of the overlapping region, to adjust the brightness for the picture that the projection arrangement is projected out.
10. optical projection system according to claim 6, which is characterized in that the control unit is by the RGB in the image information
Color input signal is converted into a YUV chrominance signals, and is believed to calculate the brightness with the luminance signal in the YUV chrominance signals
Breath.
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| JP6701669B2 (en) * | 2015-10-29 | 2020-05-27 | セイコーエプソン株式会社 | Image projection system, projector, and control method of image projection system |
| WO2017168486A1 (en) * | 2016-03-28 | 2017-10-05 | 日立マクセル株式会社 | Projection-type video display apparatus |
| CN106060491B (en) * | 2016-06-16 | 2019-02-15 | 深圳市Tcl高新技术开发有限公司 | A kind of method for correcting colors of projected image and device |
| CN107872658A (en) * | 2016-09-28 | 2018-04-03 | 株式会社理光 | Project seam region brightness adjusting method and projection seam region brightness regulating apparatus |
| JP2019078786A (en) * | 2017-10-20 | 2019-05-23 | セイコーエプソン株式会社 | Image projection system, projector, and control method of image projection system |
| CN110290365B (en) * | 2019-07-12 | 2021-02-02 | 广东技术师范大学天河学院 | Edge fusion method |
| CN113163181A (en) * | 2020-01-23 | 2021-07-23 | 明基智能科技（上海）有限公司 | Projection device and projection display system using same |
| CN111432192B (en) * | 2020-02-18 | 2021-05-18 | 四川大学 | RGBA four-dimensional mapping-based projection fusion area brightness and chromaticity control method |
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