CN107820067A - The joining method and splicing apparatus of more projected pictures - Google Patents
The joining method and splicing apparatus of more projected pictures Download PDFInfo
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- CN107820067A CN107820067A CN201711029126.1A CN201711029126A CN107820067A CN 107820067 A CN107820067 A CN 107820067A CN 201711029126 A CN201711029126 A CN 201711029126A CN 107820067 A CN107820067 A CN 107820067A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3141—Constructional details thereof
- H04N9/3147—Multi-projection systems
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T3/00—Geometric image transformations in the plane of the image
- G06T3/40—Scaling of whole images or parts thereof, e.g. expanding or contracting
- G06T3/4038—Image mosaicing, e.g. composing plane images from plane sub-images
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3179—Video signal processing therefor
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Abstract
The present invention provides a kind of joining method and splicing apparatus of more projected pictures, and joining method includes：Obtain the multichannel input picture for spliced panoramic figure, and form splicing picture, wherein adjacent two-way input picture on the splicing picture formed with overlapping region and Non-overlapping Domain；The grey decision-making of each pixel in splicing picture is obtained, and all grey decision-makings are at least divided into the first and second grey decision-making section；Relatively and judge whether the first minimum gray value of pixel in Non-overlapping Domain is less than the second minimum gray value of pixel in overlapping region；The pixel intensity according to corresponding to comparative result utilizes correction function to increase the first grey decision-making section in the Non-overlapping Domain；And output splicing picture.The present invention can solve the problems, such as that more projected pictures can not accomplish contrast and dark scalariform condition while take into account in the prior art.
Description
Technical field
The present invention is on a kind of splicing field, more particularly to a kind of joining method of more projected pictures and splicing dress
Put.
Background technology
With the development of science and technology, the application of projector is more and more extensive, because the image that single projector comes out is big
It is small limited, when needing to show overlarge area, it will usually by the image mosaic that multiple projectors cast out respectively into required
Overlarge area image.And when two or more projection arrangement tiled display, understand some in picture junction
Image overlap, can therefore it be enhanced in this overlapping regional luminance, can be no overlapping generally for the uniform of picture brightness
Local brightness also improves, and can cause not black enough the situation of the dark rank of picture in such event.
The content of the invention
Therefore, an object of the present invention is to provide a kind of joining method and splicing apparatus of more projected pictures, with solution
The problem of certainly more projected pictures can not accomplish contrast and dark scalariform condition while take into account in the prior art.
For the above-mentioned purpose, the present invention provides a kind of joining method of more projected pictures, and the joining method includes：
Step S1, the multichannel input picture for spliced panoramic figure is obtained, and form splicing picture, wherein adjacent two-way is defeated
Enter image on the splicing picture formed with overlapping region and Non-overlapping Domain；
Step S2, the grey decision-making of each pixel in the splicing picture is obtained, and by all grey decision-makings of the splicing picture at least
It is divided into the first grey decision-making section and the second grey decision-making section；
Step S3, relatively and judge whether the first minimum gray value of pixel in the Non-overlapping Domain is less than the overlapping region
Second minimum gray value of interior pixel, if then performing step S41, if otherwise performing step S42, wherein first minimum gray
Value is in the first grey decision-making section；
Step S41, it is bright to increase pixel corresponding to the first grey decision-making section in the Non-overlapping Domain using correction function
Degree, and perform step S5；
Step S42, maintains the pixel intensity of the splicing picture, and performs step S5；
Step S5, export the splicing picture.
As optional technical scheme, the correction function changes with the gray-scale distribution difference of the splicing picture.
As optional technical scheme, this increases the first grey decision-making section in the Non-overlapping Domain using correction function
Corresponding pixel intensity, including obtain according to equation below pixel corresponding to the first grey decision-making section in the Non-overlapping Domain
Brightness：
H2=((2x-M)/2x) Х H1+M, wherein, H2 is the grey decision-making after the adjustment of the first pixel, and H1 adjusts for the first pixel
Grey decision-making before whole, x are the digit of splicing picture, and M be default corrected parameter, and first pixel adjust before grey decision-making position
In in the first grey decision-making section in the Non-overlapping Domain.
As optional technical scheme, the grey decision-making of each pixel in the acquisition splicing picture, including：
The splicing picture is converted into gray level image；And obtain the grey decision-making of each pixel in gray level image.
Also a kind of splicing apparatus of more projected pictures of the present invention, the splicing apparatus include：
Image input module, for obtaining the multichannel input picture for spliced panoramic figure, and splicing picture is formed, wherein
Adjacent two-way input picture on the splicing picture formed with overlapping region and Non-overlapping Domain；
Acquisition module, for obtaining the grey decision-making of each pixel in the splicing picture, and by all GTGs of the splicing picture
Value is at least divided into the first grey decision-making section and the second grey decision-making section；
Comparison module, for relatively and judging the first minimum gray value of pixel in the Non-overlapping Domain whether less than this is heavy
The second minimum gray value of pixel, wherein the first minimum gray value are located in the first grey decision-making section in folded region；
Brightness adjusting section, for adjusting first ash in the Non-overlapping Domain using correction function according to comparative result
Pixel intensity corresponding to rank value section；
Picture output module, for exporting the splicing picture to projection screen；
Wherein, when pixel in the Non-overlapping Domain the first minimum gray value less than pixel in the overlapping region second most
During small grey decision-making, increase pixel intensity corresponding to the first grey decision-making section in the Non-overlapping Domain by the correction function；
When the first minimum gray value of pixel in the Non-overlapping Domain is higher than the second minimum gray value of pixel in the overlapping region, maintenance
The pixel intensity of the splicing picture.
As optional technical scheme, the correction function changes with the gray-scale distribution difference of the splicing picture.
As optional technical scheme, this increases the first grey decision-making section in the Non-overlapping Domain using correction function
Corresponding pixel intensity, including obtain according to equation below pixel corresponding to the first grey decision-making section in the Non-overlapping Domain
Brightness：
H2=((2x-M)/2x) Х H1+M, wherein, H2 is the grey decision-making after the adjustment of the first pixel, and H1 adjusts for the first pixel
Grey decision-making before whole, x are the digit of splicing picture, and M be default corrected parameter, and first pixel adjust before grey decision-making position
In in the first grey decision-making section in the Non-overlapping Domain.
The present invention also provides a kind of joining method of more projected pictures, and the joining method includes：
Step S11, the multichannel input picture for spliced panoramic figure is obtained, and form splicing picture, wherein adjacent two-way
Input picture on the splicing picture formed with overlapping region and Non-overlapping Domain；
Step S21, the brightness value of each pixel in the splicing picture is obtained, and by all brightness values of the splicing picture at least
It is divided into the first brightness value section and the second brightness value section；
Step S31, relatively and judge whether the first minimum brightness of pixel in the Non-overlapping Domain is less than the overlapping region
Second minimum luminance value of interior pixel, if then performing step S411, if otherwise performing step S421, wherein first minimum is bright
Angle value is located in the first brightness value section；
Step S411, it is bright to increase pixel corresponding to the first brightness value section in the Non-overlapping Domain using correction function
Degree, and perform step S51；
Step S421, maintains the pixel intensity of the splicing picture, and performs step S51；
Step S51, export the splicing picture.
As optional technical scheme, the correction function changes with the Luminance Distribution difference of the splicing picture.
The present invention also provides a kind of splicing apparatus of more projected pictures, and the splicing apparatus includes：
Image input module, for obtaining the multichannel input picture for spliced panoramic figure, and splicing picture is formed, wherein
Adjacent two-way input picture on the splicing picture formed with overlapping region and Non-overlapping Domain；
Acquisition module, for obtaining the brightness value of each pixel in the splicing picture, and by all brightness of the splicing picture
Value is at least divided into the first brightness value section and the second brightness value section；
Comparison module, for relatively and judging the first minimum brightness of pixel in the Non-overlapping Domain whether less than this is overlapping
Second minimum luminance value of pixel in region, wherein first minimum luminance value are located in the first brightness value section；
Brightness adjusting section, for according to comparative result using correction function adjust in the Non-overlapping Domain this is first bright
Pixel intensity corresponding to angle value section；
Picture output module, for exporting the splicing picture to projection screen；
Wherein, when pixel in the Non-overlapping Domain the first minimum luminance value less than pixel in the overlapping region second most
Small brightness value, increase pixel intensity corresponding to the first brightness value section in the Non-overlapping Domain by the correction function；When
For the first minimum luminance value of pixel higher than the second minimum luminance value of pixel in the overlapping region, maintaining should in the Non-overlapping Domain
Splice the pixel intensity of picture.
Compared with prior art, the joining method and splicing apparatus of more projected pictures of the invention, using detecting split picture
The result of face overall brightness judges whether to start the means of non-overlapped area's luminance raising, since reach the overall spelling for retaining image
Connect the effect of the weight scope of picture.Both the comparison of light and shade in image frame between different pattern can have been maintained, can also keep image
Definition.Prior art is compared, the present invention can effectively lift splicing picture quality, have the preferable market competitiveness.
It can be obtained further by following detailed description of the invention and institute's accompanying drawings on the advantages and spirit of the present invention
Solution.
Brief description of the drawings
Figure 1A and Figure 1B shows the schematic diagram for carrying out image mosaic on one piece of giant-screen using two projection arrangements；
Fig. 2 show the block diagram of the splicing apparatus of more projected pictures according to the present invention；
Fig. 3 show the flow chart of the joining method of more projected pictures according to the present invention.
Embodiment
Figure 1A and Figure 1B are referred to, Figure 1A and Figure 1B are shown carries out image using two projection arrangements on one piece of giant-screen
The schematic diagram of splicing, the image that this two projection arrangements are projected are had lap C, projected in present embodiment with two
Device projection image A and picture B is come exemplified by forming splicing picture, but the present invention is not intended to limit, and can also be more projection arrangements
Project multiple images and form splicing picture.As in Figure 1A left-side images in the marginal portion You Yige areas being mutually connected with image right
Domain is shown and image right left edge portions point identical content.Left-side images and image right all include part C, two projection dresses
Put when combination projects the picture, have an overlapping areas, that is, adjacent two-way in the border projection scope being mutually linked
Input picture, can be accurately mutual with the image repetition display portion C for ensureing adjoining in splicing formed with overlapping region C on picture
Overlap.Such as Figure 1B, splice in picture, the region outside the C of overlapping region is Non-overlapping Domain.
Fig. 2 is referred to, Fig. 2 show the block diagram of the splicing apparatus of more projected pictures according to the present invention.This hair
Bright to provide a kind of splicing apparatus 1 of more projected pictures, splicing apparatus 1 includes：Image input module 2, acquisition module 3, compare mould
Block 4, brightness adjusting section 5 and picture output module 6.Image input module 2 is used to obtain the multichannel for spliced panoramic figure
Input picture, and form splicing picture, wherein adjacent two-way input picture on splicing picture formed with overlapping region.Obtain mould
Block 3 is used for the grey decision-making for obtaining each pixel in splicing picture, and all grey decision-makings for splicing picture are at least divided into the first ash
Rank is worth section and the second grey decision-making section.Comparison module 4 is used for relatively and judges first of pixel in the Non-overlapping Domain most
Whether small grey decision-making is less than the second minimum gray value of pixel in the overlapping region, wherein the first minimum gray value is positioned at the first ash
In rank value section.Brightness adjusting section 5 be used for according to comparative result using correction function adjust in the Non-overlapping Domain this
Pixel intensity corresponding to one grey decision-making section.Picture output module 6 is used to export splicing picture to projection screen.Wherein, when this
The first minimum gray value of pixel passes through amendment less than the second minimum gray value of pixel in the overlapping region in Non-overlapping Domain
Function increases pixel intensity corresponding to the first grey decision-making section in the Non-overlapping Domain；When pixel in the Non-overlapping Domain
First minimum gray value maintains the pixel intensity for splicing picture higher than the second minimum gray value of pixel in the overlapping region.
Moreover, acquisition module 3 obtains the grey decision-making of each pixel in splicing picture, including：Splicing picture is converted into gray scale
Image；And obtain the grey decision-making of each pixel in gray level image.
Wherein, the grey decision-making for splicing picture is at least divided into the first grey decision-making section and the second grey decision-making section, pixel
The relatively low section of grey decision-making represent the dark rank of splicing picture, the first grey decision-making section i.e. for example, An Jie areas in present embodiment
Between.
Special instruction, correction function change with the gray-scale distribution difference of splicing picture, such as in the first GTG
The pixel intensity being worth in section is higher (i.e. grey decision-making is bigger), and the correction of correction function is with regard to smaller；In first grey decision-making section
Pixel intensity it is lower (i.e. grey decision-making is smaller), the correction of correction function then accordingly increases.
The numeral of the GTG quantity in the first grey decision-making section that correction function can be corresponded in the Non-overlapping Domain
Sequence, image regulating method add all pixels in the first grey decision-making section pre- from correction function (Serial No.) respectively
If value, thereby increases the brightness of each pixel in the first grey decision-making section in the Non-overlapping Domain.Or correction function may be used also
The mode of passing ratio conversion, all pixels in the first grey decision-making section in the Non-overlapping Domain are improved with same ratio
Each pixel basis in the first grey decision-making section in its pixel intensity or the Non-overlapping Domain each corresponds to ratio and changed
Calculate, to reduce whole pixel intensities respectively.Each pixel in the first grey decision-making section in the Non-overlapping Domain is repaiied
Depending on positive quantity is with its original intensity, original intensity is higher, and amendment change is smaller；Original intensity is relatively low, and amendment change is bigger.Preferably
, the first minimum gray value in the Non-overlapping Domain after adjustment is close or equal to the second minimum ash in the overlapping region
Rank is worth, but is not limited.The computing mode of correction function can be not limited to the several methods of aforementioned list, end regard design requirement and
It is fixed, in this no longer to other applicable operation function elaborates.
Specifically, in present embodiment, increase the first grey decision-making section in the Non-overlapping Domain using correction function
Corresponding pixel intensity, including obtain according to equation below pixel corresponding to the first grey decision-making section in the Non-overlapping Domain
Brightness：
H2=((2x–M)/2x) Х H1+M, wherein, H2 is the grey decision-making after the adjustment of the first pixel, and H1 adjusts for the first pixel
Preceding grey decision-making, x are the digit of splicing picture, and M be default correction function, and the grey decision-making before the adjustment of the first pixel is positioned at being somebody's turn to do
In the first grey decision-making section in Non-overlapping Domain.
For example, it is assumed that the digit of each pixel is 8 (i.e. x=8) on splicing picture, then its weight scope is 0 to 255.
For the picture entirety uniformity, the weight that Non-overlapping Domain is each put needs up to increase certain value (default correction function)
To improve brightness, it is assumed that this value is 20, that is to say, that the weight scope of overall splicing picture becomes 20-255 from 0 to 255,
So dark rank can become 20 and cause dark rank not dark enough, that is, 0-19-255 may translate into 20-39-255.
But the solution of the present invention can be regarded as it is as follows：
(1) assume splicing picture grey decision-making scope be 21-255, if in Non-overlapping Domain pixel minimum gray value
Higher than the minimum gray value of pixel in overlapping region, then the pixel intensity that need not lift Non-overlapping Domain is represented.If on the contrary,
Lifting, the minimum gray value (or minimum gray value of Non-overlapping Domain) that can cause to splice picture can become 39, so as to cause picture
In face of than reducing.
(2) assume splicing picture gray-scale distribution be 0-55-255 because in Non-overlapping Domain pixel minimum gray value
Less than the minimum gray value of pixel in overlapping region, so certainly will then need to start the mechanism of bright dark rank conversion, non-overlapped area
Domain lightens, and allows the grey decision-making in dark rank region to become 20-75 by 0-55.
In this way, it may be implemented in the splicing for the more projected pictures for not influenceing to maintain dark scalariform condition in the case of contrast.
In addition, referring to Fig. 3, Fig. 3 show the flow chart of the joining method of more projected pictures according to the present invention, this hair
Bright to provide a kind of joining method of more projected pictures, above-mentioned joining method comprises the following steps：
Step S1, the multichannel input picture for spliced panoramic figure is obtained, and form splicing picture, wherein adjacent two-way is defeated
Enter image in splicing picture on formed with overlapping region and Non-overlapping Domain；
Step S2, the grey decision-making of each pixel in splicing picture is obtained, and all grey decision-makings for splicing picture are at least divided
For the first grey decision-making section and the second grey decision-making section；
Step S3, relatively and judge the first minimum gray value of pixel in Non-overlapping Domain whether less than picture in overlapping region
Second minimum gray value of element, if then performing step S41, if step S42 is otherwise performed, wherein the first minimum gray value is located at
In the first grey decision-making section；
Step S41, it is bright to increase pixel corresponding to the first grey decision-making section in the Non-overlapping Domain using correction function
Degree, and perform step S5；
Step S42, maintains the pixel intensity of splicing picture, and performs step S5；
Step S5, output splicing picture.
Moreover, in above-mentioned acquisition splicing picture the step of the grey decision-making of each pixel, including：Splicing picture is converted into gray scale
Image；And obtain the grey decision-making of each pixel in gray level image.
Wherein, the grey decision-making for splicing picture is at least divided into the first grey decision-making section and the second grey decision-making section, pixel
The relatively low section of grey decision-making represent the dark rank of splicing picture, the first grey decision-making section i.e. for example, An Jie areas in present embodiment
Between.
Special instruction, correction function change with the gray-scale distribution difference of splicing picture, such as in the first GTG
The pixel intensity being worth in section is higher (i.e. grey decision-making is bigger), and the correction of correction function is with regard to smaller；In first grey decision-making section
Pixel intensity it is lower (i.e. grey decision-making is smaller), the correction of correction function then accordingly increases.
The numeral of the GTG quantity in the first grey decision-making section that correction function can be corresponded in the Non-overlapping Domain
Sequence, image regulating method adds all pixels in the first grey decision-making section in the Non-overlapping Domain respectively carrys out self-correction
The preset value of function (Serial No.), thereby increase the brightness of each pixel in the first grey decision-making section in Non-overlapping Domain.
Or correction function can also passing ratio conversion mode, all pixels in the first grey decision-making section are carried with same ratio
Each pixel basis in its high pixel intensity or the first grey decision-making section in the Non-overlapping Domain each corresponds to ratio
Conversion, to reduce whole pixel intensities respectively.Each pixel in the first grey decision-making section in the Non-overlapping Domain
Depending on correction is with its original intensity, original intensity is higher, and amendment change is smaller；Original intensity is relatively low, and amendment change is bigger.Compared with
Good, the first minimum gray value to the Non-overlapping Domain is adjusted close or equal to the second minimum ash in the overlapping region
Rank is worth, but is not limited.The computing mode of correction function can be not limited to the several methods of aforementioned list, end regard design requirement and
It is fixed, in this no longer to other applicable operation function elaborates.
Specifically, in present embodiment, increase pixel intensity corresponding to the first grey decision-making section using correction function, wrap
Include the pixel intensity according to corresponding to equation below obtains the first grey decision-making section：
H2=((2x–M)/2x) Х H1+M, wherein, H2 is the grey decision-making after the adjustment of the first pixel, and H1 adjusts for the first pixel
Preceding grey decision-making, x are the digit of splicing picture, and M be default correction function, and the grey decision-making before the adjustment of the first pixel is positioned at being somebody's turn to do
In the first grey decision-making section in Non-overlapping Domain.
The present invention also provides a kind of joining method of more projected pictures, and the joining method includes：
Step S11, the multichannel input picture for spliced panoramic figure is obtained, and form splicing picture, wherein adjacent two-way
Input picture on the splicing picture formed with overlapping region and Non-overlapping Domain；
Step S21, the brightness value of each pixel in the splicing picture is obtained, and by all brightness values of the splicing picture at least
It is divided into the first brightness value section and the second brightness value section；
Step S31, relatively and judge whether the first minimum luminance value of pixel in the Non-overlapping Domain is less than the overlay region
Second minimum luminance value of pixel in domain, if then performing step S411, if otherwise performing step S421, wherein first is minimum bright
Angle value is located in the first brightness value section；
Step S411, it is bright to increase pixel corresponding to the first brightness value section in the Non-overlapping Domain using correction function
Degree, and perform step S51；
Step S421, maintains the pixel intensity of splicing picture, and performs step S51；
Step S51, output splicing picture.
The present invention also provides a kind of splicing apparatus of more projected pictures, and splicing apparatus includes：
Image input module, for obtaining the multichannel input picture for spliced panoramic figure, and splicing picture is formed, wherein
Adjacent two-way input picture on the splicing picture formed with overlapping region；
Acquisition module, for obtaining the brightness value of each pixel in the splicing picture, and by all brightness of the splicing picture
Value is at least divided into the first brightness value section and the second brightness value section；
Comparison module, for relatively and judging whether the first minimum luminance value of pixel in Non-overlapping Domain is less than overlay region
Second minimum luminance value of pixel in domain, wherein the first minimum luminance value is located in the first brightness value section；
Brightness adjusting section, for according to comparative result using correction function adjust in the Non-overlapping Domain this is first bright
Pixel intensity corresponding to angle value section；
Picture output module, for exporting splicing picture to projection screen；
Wherein, when the first minimum luminance value of pixel in Non-overlapping Domain is less than the second minimum of pixel in the overlapping region
Brightness value, increase pixel intensity corresponding to the first brightness value section in the Non-overlapping Domain by correction function；When this is non-
The first minimum luminance value of pixel maintains split picture higher than the second minimum luminance value of pixel in overlapping region in weight second area
The pixel intensity in face.
Wherein, apparatus and method disclosed in the present invention, can be realized in other way, for example, being retouched above
The device embodiment stated is only schematical, such as the division of the unit, only a kind of division of logic function, actual real
There can be other dividing mode now, such as multiple units or component can combine or be desirably integrated into another system
In.Furthermore shown or discussed mutual coupling or direct-coupling or communication connection can be by some interfaces, dress
Put or the INDIRECT COUPLING of unit or communication connection, can be electrical, mechanical or other forms.
In addition, in various embodiments of the present invention, each functional module can be integrated in a processing module, also may be used
To be that modules are individually physically present, can also two or more modules be integrated in a module.It is above-mentioned integrated
Module can be realized in the form of hardware, can also be realized in the form of hardware adds software function.
In summary, the joining method and splicing apparatus of more projected pictures of the invention, it is overall using detecting splicing picture
The result of brightness judges whether to start the means of non-overlapped area's luminance raising, since reach the overall splicing picture for retaining image
Weight scope effect.Both the comparison of light and shade in image frame between different pattern can have been maintained, can also keep the clear of image
Degree.Prior art is compared, the present invention can effectively lift splicing picture quality, have the preferable market competitiveness.
By the above detailed description of preferred embodiments, it is intended to more clearly describe the feature of the present invention with spiritual,
And not protection scope of the present invention is any limitation as with above-mentioned disclosed preferred embodiment.On the contrary, its purpose
It is intended to cover various changes and has being arranged in the scope of the claims of the invention to be applied of equality.Cause
This, the apllied scope of the claims of the present invention should make most broad explanation according to above-mentioned explanation, to cause it
Cover all possible change and the arrangement of tool equality.
Claims (10)
1. a kind of joining method of more projected pictures, it is characterised in that the joining method includes：
Step S1, the multichannel input picture for spliced panoramic figure is obtained, and form splicing picture, wherein adjacent two-way input figure
As on the splicing picture formed with overlapping region and Non-overlapping Domain；
Step S2, the grey decision-making of each pixel in the splicing picture is obtained, and all grey decision-makings of the splicing picture are at least divided
For the first grey decision-making section and the second grey decision-making section；
Step S3, relatively and judge the first minimum gray value of pixel in the Non-overlapping Domain whether less than picture in the overlapping region
Second minimum gray value of element, if then performing step S41, if otherwise performing step S42, wherein the first minimum gray value position
In in the first grey decision-making section；
Step S41, increase pixel intensity corresponding to the first grey decision-making section in the Non-overlapping Domain using correction function, and
Perform step S5；
Step S42, maintains the pixel intensity of the splicing picture, and performs step S5；
Step S5, export the splicing picture.
2. the joining method of more projected pictures as claimed in claim 1, it is characterised in that the correction function is with the splicing picture
Gray-scale distribution difference and change.
3. the joining method of more projected pictures as claimed in claim 1, it is characterised in that it is non-that this utilizes correction function to increase this
Pixel intensity corresponding to the first grey decision-making section in overlapping region, including obtained according to equation below in the Non-overlapping Domain
The first grey decision-making section corresponding to pixel intensity：
H2=((2x-M)/2x) Х H1+M, wherein, H2 is the grey decision-making after the adjustment of the first pixel, and H1 is before the first pixel adjusts
Grey decision-making, x is the digit of splicing picture, and M be default corrected parameter, and the grey decision-making before first pixel adjustment is positioned at being somebody's turn to do
In the first grey decision-making section in Non-overlapping Domain.
4. the joining method of more projected pictures as claimed in claim 1, it is characterised in that each picture in the acquisition splicing picture
The grey decision-making of element, including：
The splicing picture is converted into gray level image；And
Obtain the grey decision-making of each pixel in gray level image.
5. a kind of splicing apparatus of more projected pictures, it is characterised in that the splicing apparatus includes：
Image input module, for obtaining the multichannel input picture for spliced panoramic figure, and splicing picture is formed, wherein adjacent
Two-way input picture on the splicing picture formed with overlapping region and Non-overlapping Domain；
Acquisition module, for obtaining the grey decision-making of each pixel in the splicing picture, and by all grey decision-makings of the splicing picture extremely
The first grey decision-making section and the second grey decision-making section are divided into less；
Comparison module, for relatively and judging whether the first minimum gray value of pixel in the Non-overlapping Domain is less than the overlay region
Second minimum gray value of pixel in domain, wherein the first minimum gray value are located in the first grey decision-making section；
Brightness adjusting section, for adjusting first grey decision-making in the Non-overlapping Domain using correction function according to comparative result
Pixel intensity corresponding to section；
Picture output module, for exporting the splicing picture to projection screen；
Wherein, when the first minimum gray value of pixel in the Non-overlapping Domain is grey less than the second minimum of pixel in the overlapping region
When rank is worth, increase pixel intensity corresponding to the first grey decision-making section in the Non-overlapping Domain by the correction function；When this
The first minimum gray value of pixel maintains the spelling higher than the second minimum gray value of pixel in the overlapping region in Non-overlapping Domain
Connect the pixel intensity of picture.
6. the splicing apparatus of more projected pictures as claimed in claim 5, it is characterised in that the correction function is with the splicing picture
Gray-scale distribution difference and change.
7. the splicing apparatus of more projected pictures as claimed in claim 5, it is characterised in that it is non-that this utilizes correction function to increase this
Pixel intensity corresponding to the first grey decision-making section in overlapping region, including obtained according to equation below in the Non-overlapping Domain
The first grey decision-making section corresponding to pixel intensity：
H2=((2x-M)/2x) Х H1+M, wherein, H2 is the grey decision-making after the adjustment of the first pixel, and H1 is before the first pixel adjusts
Grey decision-making, x is the digit of splicing picture, and M be default corrected parameter, and the grey decision-making before first pixel adjustment is positioned at being somebody's turn to do
In the first grey decision-making section in Non-overlapping Domain.
8. a kind of joining method of more projected pictures, it is characterised in that the joining method includes：
Step S11, the multichannel input picture for spliced panoramic figure is obtained, and form splicing picture, wherein adjacent two-way inputs
Image on the splicing picture formed with overlapping region and Non-overlapping Domain；
Step S21, the brightness value of each pixel in the splicing picture is obtained, and all brightness values of the splicing picture are at least divided
For the first brightness value section and the second brightness value section；
Step S31, relatively and judge the first minimum brightness of pixel in the Non-overlapping Domain whether less than picture in the overlapping region
Second minimum luminance value of element, if then performing step S411, if otherwise performing step S421, wherein first minimum luminance value
In the first brightness value section；
Step S411, increase pixel intensity corresponding to the first brightness value section in the Non-overlapping Domain using correction function,
And perform step S51；
Step S421, maintains the pixel intensity of the splicing picture, and performs step S51；
Step S51, export the splicing picture.
9. the joining method of more projected pictures as claimed in claim 8, it is characterised in that the correction function is with the splicing picture
Luminance Distribution difference and change.
10. a kind of splicing apparatus of more projected pictures, it is characterised in that the splicing apparatus includes：
Image input module, for obtaining the multichannel input picture for spliced panoramic figure, and splicing picture is formed, wherein adjacent
Two-way input picture on the splicing picture formed with overlapping region and Non-overlapping Domain；
Acquisition module, for obtaining the brightness value of each pixel in the splicing picture, and by all brightness values of the splicing picture extremely
The first brightness value section and the second brightness value section are divided into less；
Comparison module, for relatively and judging whether the first minimum brightness of pixel in the Non-overlapping Domain is less than the overlapping region
Second minimum luminance value of interior pixel, wherein first minimum luminance value are located in the first brightness value section；
Brightness adjusting section, for adjusting first brightness in the non-overlapped region using correction function according to comparative result
It is worth pixel intensity corresponding to section；And
Picture output module, for exporting the splicing picture to projection screen；
Wherein, when the first minimum luminance value of pixel in the Non-overlapping Domain is bright less than the second minimum of pixel in the overlapping region
Angle value, increase pixel intensity corresponding to the first brightness value section in the Non-overlapping Domain by the correction function；When this is non-
The first minimum luminance value of pixel maintains the splicing higher than the second minimum luminance value of pixel in the overlapping region in overlapping region
The pixel intensity of picture.
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