CN109285116A - Project seamless spliced fusion method, projection device and optical projection system - Google Patents
Project seamless spliced fusion method, projection device and optical projection system Download PDFInfo
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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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- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T5/00—Image enhancement or restoration
- G06T5/80—Geometric correction
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/10—Segmentation; Edge detection
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- G06T7/00—Image analysis
- G06T7/30—Determination of transform parameters for the alignment of images, i.e. image registration
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- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2207/00—Indexing scheme for image analysis or image enhancement
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Abstract
The present invention relates to large-size screen monitors to project splicing field, and in particular to a kind of to project seamless spliced fusion method, projection device and optical projection system.The application receives input picture and projection splicing parameter by projection device, segmented image fusion band size, segmented image size and segmented image starting point coordinate are calculated according to input picture parameter, projection splicing parameter and projection device parameter, and it cuts after input picture obtains segmented image and exports, realize the effect for being used as " hard fusion " equipment to carry out projected picture segmentation and output projection device itself, and splice fusion device without external hardware, also without additional splicing software, cost performance is high, debugging is convenient.
Description
Technical field
The present invention relates to large-size screen monitors to project splicing field, and in particular to a kind of to project seamless spliced fusion method, projection
Equipment and optical projection system.
Background technique
Projecting seamless spliced integration technology is two or more projected pictures to be carried out to imbricate, and pass through geometry school
Just, colour correction carries out the processing of brightness and color to fusion band, finally shows one on projective large-screen without gap, picture
Face is bigger, the higher entire picture of resolution ratio.
Substantially there are two classes to splice integration program on the market at present, one is the splicing fusion devices of external hardware, are commonly called as " melting firmly
Close ", the segmentation of projected image, the generation of fusion band are completed by hardware splicing fusion device, then pass through geometric correction, colour correction pair
Fusion band is handled, the disadvantage is that at high cost.
There are also one is the splicing integration program of pure software, it is commonly called as " soft fusion ", it is aobvious to add road by server or PC
The mode of card is compared when the machine of splicing is more by multiple servers or the distributed mode of PC framework, this scheme
The integration program of hardware has a cost advantage, but the disadvantage is that stability is poor, and there are picture is asynchronous and the risks such as Caton.
It is compared to " hard fusion " and " soft fusion " two schemes, the projection device as display terminal is simple work
To show purposes.
Summary of the invention
In view of this, the application provides a kind of seamless spliced fusion method of projection, device and system.The characteristics of the application is
It regard projection device itself as " hard fusion " equipment, splices fusion device without external hardware, splicing that also need not be additional is soft
Part, the segmentation of picture is carried out by projection device itself, then the generation of fusion band recycles the geometry school of projection device itself
Just, brightness and colors countenance complete the realization of seamless spliced integration technology, and presentation brightness is higher, and the bigger whole picture of resolution ratio is complete
Whole picture.
In order to solve the above technical problems, technical solution provided by the invention is a kind of seamless spliced fusion method of projection, is answered
For projection device, which comprises
Input picture is received, input image resolution width and input image resolution height are obtained；
Obtain projection splicing matrix line number, projection splicing matrix columns, stitching position line number and stitching position columns；
It obtains projection device resolution width, projection device resolution height, default projection device level and merges bandwidth
Fusion band height vertical with default projection device；
Segmented image level fusion bandwidth, the vertical fusion band height of segmented image, segmentation are calculated according to the data of acquisition
Picture traverse, segmented image height and segmented image starting point coordinate；
Divide input picture according to segmented image starting point coordinate, segmented image width and segmented image height, generates segmentation
Image；
Export segmented image.
Further, described vertically to be melted according to the data of acquisition calculating segmented image level fusion bandwidth, segmented image
Crossed belt height, segmented image width, segmented image height and segmented image starting point coordinate method, comprising:
According to default projection device level merge bandwidth, projection device resolution width, projection splicing matrix columns and
Input image resolution width calculates segmented image level and merges bandwidth；
According to the vertical fusion band height of default projection device, projection device resolution height, projection splicing matrix line number and
Input image resolution height calculates the vertical fusion band height of segmented image；
Bandwidth is merged according to input image resolution width, projection splicing matrix columns and segmented image level, is calculated
Segmented image width；
According to input image resolution height, projection splicing matrix line number and the vertical fusion band height of segmented image, calculate
Segmented image height；
Melted according to input image resolution width, projection splicing matrix columns, stitching position columns and segmented image level
Crossed belt width calculates the abscissa of segmented image starting point coordinate；
Vertically melted according to input image resolution height, projection splicing matrix line number, stitching position line number and segmented image
Crossed belt height calculates the ordinate of segmented image starting point coordinate.
Further, the basis presets projection device level fusion bandwidth, projection device resolution width, projection spelling
Matrix columns and input image resolution width are connect, the method for calculating segmented image level fusion bandwidth, comprising:
Segmented image level fusion bandwidth=default projection device level fusion bandwidth/(projection device resolution ratio is wide
Spend * projection splicing matrix columns-and preset projection device level fusion bandwidth * (projection splicing matrix columns -1)) * input picture
Resolution width；
The basis presets the vertical fusion band height of projection device, projection device resolution height, projection splicing row matrix
Several and input image resolution height, the method for calculating the vertical fusion band height of segmented image, comprising:
The vertical fusion band height of the segmented image=default vertical fusion band height of projection device/(projection device high resolution
Spend * projection splicing matrix line number-and preset the vertical fusion band height * of projection device (projection splicing matrix line number -1)) * input picture
Resolution height.
Further, described to be melted according to input image resolution width, projection splicing matrix columns and segmented image level
Crossed belt width, the method for calculating segmented image width, comprising:
Judge whether stitching position columns is equal to 1 or is equal to projection splicing matrix columns, if so, calculating segmented image
Matrix is spliced in width=input image resolution width/projection splicing matrix columns+segmented image level fusion bandwidth/projection
Columns, if it is not, then calculating segmented image width=input image resolution width/projection splicing matrix columns+(projection splicing square
Number of arrays+1) * segmented image level fusion bandwidth/projection splicing matrix columns；
It is described that matrix line number and the vertical fusion band height of segmented image are spliced according to input image resolution height, projection,
The method for calculating segmented image height, comprising:
Judge whether stitching position line number is equal to 1 or is equal to projection splicing matrix line number, if so, calculating segmented image
Matrix is spliced in highly=input image resolution height/vertical fusion band height/projection of projection splicing matrix line number+segmented image
Line number, if it is not, then calculating segmented image height=input image resolution height/projection splicing matrix line number+(projection splicing square
Battle array line number+1) the vertical fusion band height of * segmented image/projection splicing matrix line number.
Further, described that matrix columns, stitching position columns are spliced according to input image resolution width, projection and divided
Cut image level fusion bandwidth, the method for calculating the abscissa of segmented image starting point coordinate, comprising:
Judge whether stitching position columns is equal to 1, if so, abscissa=0 of segmented image starting point coordinate is calculated, if
It is no, then calculate abscissa=(input image resolution width+segmented image level fusion bandwidth of segmented image starting point coordinate
Degree)/projection splicing matrix columns * (stitching position columns -1)-segmented image level fusion bandwidth+1；
It is described to be hung down according to input image resolution height, projection splicing matrix line number, stitching position line number and segmented image
Straight fusion band height, the method for calculating the ordinate of segmented image starting point coordinate, comprising:
Judge whether stitching position line number is equal to 1, if so, ordinate=0 of segmented image starting point coordinate is calculated, if
It is no, then calculate ordinate=(vertical fusion band height of input image resolution height+segmented image of segmented image starting point coordinate
Degree)/vertical fusion band the height+1 of projection splicing matrix line number * (stitching position line number -1)-segmented image；
Wherein, stitching position line number and stitching position columns are the natural number since 1.
Further, divided described according to segmented image starting point coordinate, segmented image width and segmented image height defeated
Enter image, generate between segmented image step and output segmented image step, further includes:
Geometric correction is carried out to segmented image；
To the horizontal fusion band and/or the progress colour correction of vertical fusion band and gamma correction in segmented image.
The present invention also provides a kind of projection device, the equipment includes:
Image input processing module obtains input image resolution width and input picture point for receiving input picture
Resolution height；
Splice parameter acquisition module, for obtaining projection splicing matrix line number, projection splicing matrix columns, stitching position row
Several and stitching position columns；
Device parameter obtains module, for obtaining projection device resolution width, projection device resolution height, default throwing
Shadow equipment level merges bandwidth and the vertical fusion band height of default projection device；
Segmented image parameter calculating module, for calculating segmented image level fusion bandwidth according to the data of acquisition, dividing
Cut the vertical fusion band height of image, segmented image width, segmented image height and segmented image starting point coordinate；
Segmented image generation module, for according to segmented image starting point coordinate, segmented image width and segmented image height
Divide input picture, generates segmented image；
Segmented image output module, for exporting segmented image.
Further, the segmented image parameter calculating module includes:
The horizontal fusion band width computing unit of segmented image, for according to default projection device level fusion bandwidth, throwing
Shadow device resolution width, projection splicing matrix columns and input image resolution width, calculate the horizontal fusion band of segmented image
Width；
The vertical fusion band height calculation unit of segmented image, for according to the default vertical fusion band height of projection device, throwing
Shadow device resolution height, projection splicing matrix line number and input image resolution height, calculate the vertical fusion band of segmented image
Highly；
Segmented image width computing unit, for splicing matrix columns according to input image resolution width, projection and dividing
Image level fusion bandwidth is cut, segmented image width is calculated；
Segmented image height calculation unit, for splicing matrix line number according to input image resolution height, projection and dividing
The vertical fusion band height of image is cut, segmented image height is calculated；
The abscissa computing unit of segmented image starting point coordinate, for being spliced according to input image resolution width, projection
Matrix columns, stitching position columns and segmented image level merge bandwidth, calculate the abscissa of segmented image starting point coordinate；
The ordinate computing unit of segmented image starting point coordinate, for being spliced according to input image resolution height, projection
Matrix line number, stitching position line number and the vertical fusion band height of segmented image calculate the ordinate of segmented image starting point coordinate.
Further, the horizontal fusion band width computing unit of the segmented image is according to the default horizontal fusion band of projection device
Width, projection device resolution width, projection splicing matrix columns and input image resolution width, it is horizontal to calculate segmented image
The method for merging bandwidth, comprising:
Segmented image level fusion bandwidth=default projection device level fusion bandwidth/(projection device resolution ratio is wide
Spend * projection splicing matrix columns-and preset projection device level fusion bandwidth * (projection splicing matrix columns -1)) * input picture
Resolution width；
The vertical fusion band height calculation unit of the segmented image is according to the vertical fusion band height of default projection device, projection
Device resolution height, projection splicing matrix line number and input image resolution height, it is high to calculate the vertical fusion band of segmented image
The method of degree, comprising:
The vertical fusion band height of the segmented image=default vertical fusion band height of projection device/(projection device high resolution
Spend * projection splicing matrix line number-and preset the vertical fusion band height * of projection device (projection splicing matrix line number -1)) * input picture
Resolution height.
Further, the segmented image width computing unit is according to input image resolution width, projection splicing matrix
Columns and segmented image level merge bandwidth, the method for calculating segmented image width, comprising:
Judge whether stitching position columns is equal to 1 or is equal to projection splicing matrix columns, if so, calculating segmented image
Matrix is spliced in width=input image resolution width/projection splicing matrix columns+segmented image level fusion bandwidth/projection
Columns, if it is not, then calculating segmented image width=input image resolution width/projection splicing matrix columns+(projection splicing square
Number of arrays+1) * segmented image level fusion bandwidth/projection splicing matrix columns；
The segmented image height calculation unit is according to input image resolution height, projection splicing matrix line number and segmentation
The vertical fusion band height of image, the method for calculating segmented image height, comprising:
Judge whether stitching position line number is equal to 1 or is equal to projection splicing matrix line number, if so, calculating segmented image
Matrix is spliced in highly=input image resolution height/vertical fusion band height/projection of projection splicing matrix line number+segmented image
Line number, if it is not, then calculating segmented image height=input image resolution height/projection splicing matrix line number+(projection splicing square
Battle array line number+1) the vertical fusion band height of * segmented image/projection splicing matrix line number.
Further, the abscissa computing unit of the segmented image starting point coordinate according to input image resolution width,
Projection splicing matrix columns, stitching position columns and segmented image level merge bandwidth, calculate segmented image starting point coordinate
The method of abscissa, comprising:
Judge whether stitching position columns is equal to 1, if so, abscissa=0 of segmented image starting point coordinate is calculated, if
It is no, then calculate abscissa=(input image resolution width+segmented image level fusion bandwidth of segmented image starting point coordinate
Degree)/projection splicing matrix columns * (stitching position columns -1)-segmented image level fusion bandwidth+1；
The ordinate computing unit of the segmented image starting point coordinate is according to input image resolution height, projection splicing square
Battle array line number, stitching position line number and the vertical fusion band height of segmented image, calculate the side of the ordinate of segmented image starting point coordinate
Method, comprising:
Judge whether stitching position line number is equal to 1, if so, ordinate=0 of segmented image starting point coordinate is calculated, if
It is no, then calculate ordinate=(vertical fusion band height of input image resolution height+segmented image of segmented image starting point coordinate
Degree)/vertical fusion band the height+1 of projection splicing matrix line number * (stitching position line number -1)-segmented image；
Wherein, stitching position line number and stitching position columns are the natural number since 1.
Further, the equipment further includes segmented image correction module, for carrying out geometric correction to segmented image；It is right
Horizontal fusion band and/or vertical fusion band in segmented image carry out colour correction and gamma correction.
The present invention also provides a kind of optical projection systems, including the above-mentioned projection device of at least two.
Compared with prior art, detailed description are as follows for its advantages by the application: the application is received defeated by projection device
Enter image and projection splicing parameter, segmented image is calculated according to input picture parameter, projection splicing parameter and projection device parameter
Fusion band size, segmented image size and segmented image starting point coordinate, and cut after input picture obtains segmented image and export, it is real
The effect for being used as " hard fusion " equipment to carry out projected picture segmentation and output projection device itself is showed, and without external
Hardware splices fusion device, and also without additional splicing software, cost performance is high, debugging is convenient.
Detailed description of the invention
Fig. 1 is the seamless spliced fusion method of a kind of projection that the embodiment of the present invention one provides；
Fig. 2 is a kind of projection device provided by Embodiment 2 of the present invention；
Fig. 3 is that a kind of optical projection system that the embodiment of the present invention three provides splices schematic diagram.
Specific embodiment
It is with reference to the accompanying drawing and specific real in order to make those skilled in the art more fully understand technical solution of the present invention
Applying example, the present invention is described in further detail.
As shown in Figure 1, the embodiment of the present invention one provides a kind of seamless spliced fusion method of projection, it is applied to projection device,
This method comprises:
S11: receiving input picture, obtains input image resolution width and input image resolution height；
S12: projection splicing matrix line number, projection splicing matrix columns, stitching position line number and stitching position columns are obtained；
S13: projection device resolution width, projection device resolution height, the default horizontal fusion band of projection device are obtained
Width and the vertical fusion band height of default projection device；
S2: segmented image level fusion bandwidth is calculated according to the data of acquisition, the vertical fusion band height of segmented image, is divided
Cut picture traverse, segmented image height and segmented image starting point coordinate；
S3: input picture is divided according to segmented image starting point coordinate, segmented image width and segmented image height, generates and divides
Cut image；
S4: output segmented image.
It should be noted that calculating segmented image level according to the data of acquisition in step S2 merges bandwidth, segmentation figure
As vertical fusion band height, segmented image width, segmented image height and segmented image starting point coordinate method, comprising:
S21, rectangular array is spliced according to default projection device level fusion bandwidth, projection device resolution width, projection
Several and input image resolution width calculates segmented image level and merges bandwidth；According to the vertical fusion band of default projection device
Highly, projection device resolution height, projection splicing matrix line number and input image resolution height, it is vertical to calculate segmented image
Fusion band height；
S22: merging bandwidth according to input image resolution width, projection splicing matrix columns and segmented image level,
Calculate segmented image width；According to input image resolution height, projection splicing matrix line number and the vertical fusion band of segmented image
Highly, segmented image height is calculated；
S23: according to input image resolution width, projection splicing matrix columns, stitching position columns and segmented image water
Flat fusion bandwidth, calculates the abscissa of segmented image starting point coordinate；According to input image resolution height, projection splicing matrix
Line number, stitching position line number and the vertical fusion band height of segmented image calculate the ordinate of segmented image starting point coordinate.
Specifically, according to default projection device level fusion bandwidth, projection device resolution width, throwing in step S21
Shadow splices matrix columns and input image resolution width, the method for calculating segmented image level fusion bandwidth, comprising: segmentation
Image level merges bandwidth=default projection device level fusion bandwidth/(projection device resolution width * projection splicing square
Number of arrays-presets projection device level fusion bandwidth * (projection splicing matrix columns -1)) * input image resolution width.
According to the default vertical fusion band height of projection device, projection device resolution height, projection splicing square in step S21
Battle array line number and input image resolution height, the method for calculating the vertical fusion band height of segmented image, comprising: segmented image is vertical
Fusion band height=default vertical fusion band the height of projection device/(projection device resolution height * projection splicing matrix line number-
The default vertical fusion band height * of projection device (projection splicing matrix line number -1)) * input image resolution height.
Specifically, horizontal according to input image resolution width, projection splicing matrix columns and segmented image in step S22
Bandwidth is merged, the method for calculating segmented image width, comprising: judge whether stitching position columns is equal to 1 or is equal to projection
Splice matrix columns, if so, calculating segmented image width=input image resolution width/projection splicing matrix columns+point
Image level fusion bandwidth/projection splicing matrix columns is cut, if it is not, then calculating segmented image width=input image resolution
Square is spliced in width/projection splicing matrix columns+(projection splicing matrix columns+1) * segmented image level fusion bandwidth/projection
Number of arrays.
According to input image resolution height, projection splicing matrix line number and the vertical fusion band of segmented image in step S22
Highly, the method for segmented image height is calculated, comprising: judge whether stitching position line number is equal to 1 or is equal to projection splicing square
Battle array line number, if so, calculating segmented image height=input image resolution height/projection splices matrix line number+segmented image
Matrix line number is spliced in vertical fusion band height/projection, if it is not, then calculate segmented image height=input image resolution height/
Row matrix is spliced in projection splicing matrix line number+(projection splicing matrix line number+1) the vertical fusion band height of * segmented image/projection
Number.
Specifically, according to input image resolution width, projection splicing matrix columns, stitching position columns in step S23
Bandwidth is merged with segmented image level, the method for calculating the abscissa of segmented image starting point coordinate, comprising: judge stitching position
Whether columns is equal to 1, if so, abscissa=0 of segmented image starting point coordinate is calculated, if it is not, then calculating segmented image starting point
The abscissa of coordinate=(input image resolution width+segmented image level merges bandwidth)/projection splicing matrix columns *
(stitching position columns -1)-segmented image level merges bandwidth+1.
According to input image resolution height, projection splicing matrix line number, stitching position line number and segmentation figure in step S23
As vertical fusion band height, the method for calculating the ordinate of segmented image starting point coordinate, comprising: whether judge stitching position line number
Equal to 1, if so, ordinate=0 of segmented image starting point coordinate is calculated, if it is not, then calculating the vertical of segmented image starting point coordinate
Matrix line number * (stitching position is spliced in coordinate=(the vertical fusion band height of input image resolution height+segmented image)/projection
Line number -1) the vertical fusion band height+1 of-segmented image.
It should be noted that projecting seamless spliced fusion method between step S3 and step S4, further includes: to segmentation figure
As carrying out geometric correction, to the horizontal fusion band and/or the progress colour correction of vertical fusion band and gamma correction in segmented image.
It should be noted that being completely coincident the region of the fusion band of adjacent projections equipment by geometric correction, then
Gamma is carried out to fusion region again, black-to-white level etc. is handled, so that the brightness of fusion band and color and non-fused region
Seem almost the same, a seamless complete picture is finally presented.
As shown in Fig. 2, the embodiment of the present invention also provides a kind of projection device, which includes:
Image input processing module obtains input image resolution width and input picture point for receiving input picture
Resolution height；
Splice parameter acquisition module, for obtaining projection splicing matrix line number, projection splicing matrix columns, stitching position row
Several and stitching position columns；
Device parameter obtains module, for obtaining projection device resolution width, projection device resolution height, default throwing
Shadow equipment level merges bandwidth and the vertical fusion band height of default projection device；
Segmented image parameter calculating module, for calculating segmented image level fusion bandwidth according to the data of acquisition, dividing
Cut the vertical fusion band height of image, segmented image width, segmented image height and segmented image starting point coordinate；
Segmented image generation module, for according to segmented image starting point coordinate, segmented image width and segmented image height
Divide input picture, generates segmented image；
Segmented image output module, for exporting segmented image.
It should be noted that segmented image parameter calculating module includes:
The horizontal fusion band width computing unit of segmented image, for according to default projection device level fusion bandwidth, throwing
Shadow device resolution width, projection splicing matrix columns and input image resolution width, calculate the horizontal fusion band of segmented image
Width；
The vertical fusion band height calculation unit of segmented image, for according to the default vertical fusion band height of projection device, throwing
Shadow device resolution height, projection splicing matrix line number and input image resolution height, calculate the vertical fusion band of segmented image
Highly；
Segmented image width computing unit, for splicing matrix columns according to input image resolution width, projection and dividing
Image level fusion bandwidth is cut, segmented image width is calculated；
Segmented image height calculation unit, for splicing matrix line number according to input image resolution height, projection and dividing
The vertical fusion band height of image is cut, segmented image height is calculated；
The abscissa computing unit of segmented image starting point coordinate, for being spliced according to input image resolution width, projection
Matrix columns, stitching position columns and segmented image level merge bandwidth, calculate the abscissa of segmented image starting point coordinate；
The ordinate computing unit of segmented image starting point coordinate, for being spliced according to input image resolution height, projection
Matrix line number, stitching position line number and the vertical fusion band height of segmented image calculate the ordinate of segmented image starting point coordinate.
Specifically, the horizontal fusion band width computing unit of segmented image according to default projection device level merge bandwidth,
Projection device resolution width, projection splicing matrix columns and input image resolution width, calculate the fusion of segmented image level
The method of bandwidth, comprising: segmented image level fusion bandwidth=default projection device level fusion bandwidth/(projection is set
Standby resolution width * projection splicing matrix columns-presets projection device level fusion bandwidth * (projection splicing matrix columns-
1)) * input image resolution width；
The vertical fusion band height calculation unit of segmented image is according to the vertical fusion band height of default projection device, projection device
Resolution height, projection splicing matrix line number and input image resolution height, calculate the vertical fusion band height of segmented image
Method, comprising:
The vertical fusion band height of the segmented image=default vertical fusion band height of projection device/(projection device high resolution
Spend * projection splicing matrix line number-and preset the vertical fusion band height * of projection device (projection splicing matrix line number -1)) * input picture
Resolution height.
Specifically, segmented image width computing unit according to input image resolution width, projection splicing matrix columns and
Segmented image level merges bandwidth, the method for calculating segmented image width, comprising:
Judge whether stitching position columns is equal to 1 or is equal to projection splicing matrix columns, if so, calculating segmented image
Matrix is spliced in width=input image resolution width/projection splicing matrix columns+segmented image level fusion bandwidth/projection
Columns, if it is not, then calculating segmented image width=input image resolution width/projection splicing matrix columns+(projection splicing square
Number of arrays+1) * segmented image level fusion bandwidth/projection splicing matrix columns；
Segmented image height calculation unit is according to input image resolution height, projection splicing matrix line number and segmented image
Vertical fusion band height, the method for calculating segmented image height, comprising:
Judge whether stitching position line number is equal to 1 or is equal to projection splicing matrix line number, if so, calculating segmented image
Matrix is spliced in highly=input image resolution height/vertical fusion band height/projection of projection splicing matrix line number+segmented image
Line number, if it is not, then calculating segmented image height=input image resolution height/projection splicing matrix line number+(projection splicing square
Battle array line number+1) the vertical fusion band height of * segmented image/projection splicing matrix line number.
Specifically, the abscissa computing unit of segmented image starting point coordinate is spelled according to input image resolution width, projection
Matrix columns, stitching position columns and segmented image level fusion bandwidth are connect, the abscissa of segmented image starting point coordinate is calculated
Method, comprising: judge whether stitching position columns is equal to 1, if so, calculate segmented image starting point coordinate abscissa=0,
If it is not, then calculating abscissa=(input image resolution width+segmented image level fusion bandwidth of segmented image starting point coordinate
Degree)/projection splicing matrix columns * (stitching position columns -1)-segmented image level fusion bandwidth+1.
The ordinate computing unit of segmented image starting point coordinate is according to input image resolution height, projection splicing row matrix
Number, stitching position line number and the vertical fusion band height of segmented image, the method for calculating the ordinate of segmented image starting point coordinate, packet
It includes: judging whether stitching position line number is equal to 1, if so, ordinate=0 of segmented image starting point coordinate is calculated, if it is not, then counting
Ordinate=(the vertical fusion band height of input image resolution height+segmented image)/projection of image origination coordinate is cut in point counting
Splice the vertical fusion band height+1 of matrix line number * (stitching position line number -1)-segmented image.
It should be noted that projection device further includes segmented image correction module, for carrying out geometry school to segmented image
Just；To the horizontal fusion band and/or the progress colour correction of vertical fusion band and gamma correction in segmented image.
Specifically, be completely coincident the region of the fusion band of adjacent projections equipment by geometric correction, then again to melting
Crossed belt region carries out gamma, and black-to-white level etc. is handled, so that the brightness of fusion band and color seem with non-fused region
It is almost the same, a seamless complete picture is finally presented.
It should be noted that projection device described herein refers to the electronic equipment with projecting function, including
But it is not limited to projector.
As shown in figure 3, the embodiment of the present invention three also provides a kind of optical projection system, including 2 above-mentioned projection devices.
Outside source (computer/box etc.) is output to HDMI distributor (1 into have more) by HDMI interface, HDMI distribution
Two identical pictures are separately input to 2 different projection devices by device, using projection device soc chip scaler into
The cutting of row picture and the generation of fusion band carry out image and brightness to fusion band in the geometric correction by projection device
Processing so that the picture of fusion band seems that the picture with non-fused local is almost the same, be spliced into one it is seamless complete
Image frame.
The evolution that carries out algorithm is inputted for 4k (3840x2160) with projection device resolution ratio 1920x1080, HDMI signal
It introduces.The wide high label of projection device resolution ratio is Panel_width, Panel_height), the wide high difference of HDMI input signal
Labeled as (Input_width, Input_height), default projection device vertically merges bandwidth and default projection device is horizontal
Fusion band height is respectively labeled as (Overlap_HW, Overlap_VW) and (is usually arranged as projection device resolution ratio here
15%~20%).
By taking 1x2 or so splicing as an example, to reach the fusion band of Fig. 3, need to be split input picture, HDMI will be passed through
The identical picture that distributor gives two projection devices is split, and in addition to fusion band is identical picture part, the left side is thrown
Shadow equipment shows the left-hand component of picture, and the right projection device shows the right-hand component of picture.Due to being 1*2 or so splicing, row
Number is less than 2, so only horizontal fusion band, calculates the width of the horizontal fusion band of segmented image are as follows: Overlap_IHW=
overlap_HW/(panel_width*2-overlap_HW*(2-1))*input_width。
Overlap_IHW, Overlap_IVW respectively indicate Overlap_HW to be generated, and Overlap_VW fusion band needs
The horizontal fusion bandwidth and vertical fusion band height that input picture is cut into.And so on, M*N Splicing model indicates
Projection splicing array M row, N column, when M is less than 2, Overlap_IVW=0；When N is less than 2, Overlap_IHW=0, when M is big
When 2 and/or N is greater than 2, calculation method is as follows:
Overlap_IHW=overlap_HW/ (panel_width*N-overlap_HW* (N-1)) * input_width；
Overlap_IVW=overlap_VW/ (panel_height*M-overlap_VW* (M-1)) * input_
height。
Therefore, left side projection device (1,1) truncated picture region starting point coordinate is (0,0), shows truncated picture area
Field width degree is (input_width/2+overlap_IHW/2), is highly (input_height)；The right projection device (1,2)
The starting point coordinate x=(input_width/2+1-overlap_IHW/2) in truncated picture region, y=0；Show the figure of interception
Picture peak width is (input_width/2+overlap_IHW/2), is highly (input_height).
And so on, the projection device that position is m*n in M*N projection Splicing model indicates that projection device is located at m
Row, the n-th column, m, n are the natural number since 1.Output_width indicates segmented image width, output_height table
Show segmented image height.
When n is the head and the tail column of projection splicing matrix, i.e. when n=1 n=N, output_width=input_
width/N+overlap_IHW/N；When n is the non-head and the tail column of projection splicing matrix, n ≠ 1 and when n ≠ N, output_width
The width of=input_width/N+ (N+1) * overlap_IHW/N, middle column will more overlap_IHW.
When m is the head and the tail row of projection splicing matrix, i.e. when m=1 m=M, output_height=input_
height/M+overlap_IVW/M；When m is the non-head and the tail row of projection splicing matrix, m ≠ 1 and when m ≠ M, output_
The height of height=input_height/M+ (M+1) * overlap_IVW/M, center row will more overlap_IVW.
When n is the 1st column, divide starting point abscissa x=0, when n is not the 1st column, x=(input_width+
overlap_IHW)/N*(n-1)+1-overlap_IHW；
When m is 1 row, divide starting point ordinate y=0, when m is not 1 row, y=(input_height+
overlap_IVW)/M*(m-1)+1-overlap_IVW；Wherein M, N, m, n are natural number, and m, n are started counting from 1.
Inventive principle of the invention is to be split using the scaler of the soc chip of projection device itself to input picture
With the generation of fusion band, then again by the geometric correction of projection device, and to the color and brightness processed of fusion band, provide
A kind of higher seamless large screen splicing integration technology of cost performance.
The above is only the preferred embodiment of the present invention, it is noted that above-mentioned preferred embodiment is not construed as pair
Limitation of the invention, protection scope of the present invention should be defined by the scope defined by the claims..For the art
For those of ordinary skill, without departing from the spirit and scope of the present invention, several improvements and modifications can also be made, these change
It also should be regarded as protection scope of the present invention into retouching.
Claims (13)
1. a kind of seamless spliced fusion method of projection, is applied to projection device, which is characterized in that the described method includes:
Input picture is received, input image resolution width and input image resolution height are obtained；
Obtain projection splicing matrix line number, projection splicing matrix columns, stitching position line number and stitching position columns；
Obtain projection device resolution width, projection device resolution height, default projection device level fusion bandwidth and pre-
If the vertical fusion band height of projection device；
Segmented image level, which is calculated, according to the data of acquisition merges bandwidth, the vertical fusion band height of segmented image, segmented image
Width, segmented image height and segmented image starting point coordinate；
Divide input picture according to segmented image starting point coordinate, segmented image width and segmented image height, generates segmented image；
Export segmented image.
2. the seamless spliced fusion method of projection according to claim 1, which is characterized in that the data meter according to acquisition
Point counting is cut image level fusion bandwidth, the vertical fusion band height of segmented image, segmented image width, segmented image height and is divided
It cuts image origination and sits calibration method, comprising:
Bandwidth, projection device resolution width, projection splicing matrix columns and input are merged according to default projection device level
Image resolution ratio width calculates segmented image level and merges bandwidth；
According to the vertical fusion band height of default projection device, projection device resolution height, projection splicing matrix line number and input
Image resolution ratio height calculates the vertical fusion band height of segmented image；
Bandwidth is merged according to input image resolution width, projection splicing matrix columns and segmented image level, calculates segmentation
Picture traverse；
According to input image resolution height, projection splicing matrix line number and the vertical fusion band height of segmented image, segmentation is calculated
Picture altitude；
According to input image resolution width, projection splicing matrix columns, stitching position columns and the horizontal fusion band of segmented image
Width calculates the abscissa of segmented image starting point coordinate；
According to input image resolution height, projection splicing matrix line number, stitching position line number and the vertical fusion band of segmented image
Highly, the ordinate of segmented image starting point coordinate is calculated.
3. the seamless spliced fusion method of projection according to claim 2, which is characterized in that the basis presets projection device
Level fusion bandwidth, projection device resolution width, projection splicing matrix columns and input image resolution width, calculating point
The method for cutting image level fusion bandwidth, comprising:
Segmented image level merges bandwidth=default projection device level fusion bandwidth/(projection device resolution width * throwing
Shadow splicing matrix columns-presets projection device level fusion bandwidth * (projection splicing matrix columns -1)) resolution of * input picture
Rate width；
The basis preset the vertical fusion band height of projection device, projection device resolution height, projection splicing matrix line number and
Input image resolution height, the method for calculating the vertical fusion band height of segmented image, comprising:
The vertical fusion band height of the segmented image=default vertical fusion band height of projection device/(projection device resolution height * is thrown
Shadow, which splices matrix line number -, presets the vertical fusion band height * of projection device (projection splicing matrix line number -1)) resolution of * input picture
Rate height.
4. the seamless spliced fusion method of projection according to claim 2, which is characterized in that described to be differentiated according to input picture
Rate width, projection splicing matrix columns and segmented image level merge bandwidth, the method for calculating segmented image width, comprising:
Judge whether stitching position columns is equal to 1 or is equal to projection splicing matrix columns, if so, calculating segmented image width
Rectangular array is spliced in=input image resolution width/projection splicing matrix columns+segmented image level fusion bandwidth/projection
Number, if it is not, then calculating segmented image width=input image resolution width/projection splicing matrix columns+(projection splicing matrix
Columns+1) * segmented image level fusion bandwidth/projection splicing matrix columns；
It is described that matrix line number and the vertical fusion band height of segmented image are spliced according to input image resolution height, projection, it calculates
The method of segmented image height, comprising:
Judge whether stitching position line number is equal to 1 or is equal to projection splicing matrix line number, if so, calculating segmented image height
Row matrix is spliced in=input image resolution height/vertical fusion band height/projection of projection splicing matrix line number+segmented image
Number, if it is not, then calculating segmented image height=input image resolution height/projection splicing matrix line number+(projection splicing matrix
Line number+1) the vertical fusion band height of * segmented image/projection splicing matrix line number.
5. the seamless spliced fusion method of projection according to claim 2, which is characterized in that described to be differentiated according to input picture
Rate width, projection splicing matrix columns, stitching position columns and segmented image level merge bandwidth, calculate segmented image starting point
The method of the abscissa of coordinate, comprising:
Judge whether stitching position columns is equal to 1, if so, abscissa=0 of segmented image starting point coordinate is calculated, if it is not, then
The abscissa of segmented image starting point coordinate=(input image resolution width+segmented image level merges bandwidth)/is calculated to throw
Shadow splices matrix columns * (stitching position columns -1)-segmented image level and merges bandwidth+1；
It is described vertically to be melted according to input image resolution height, projection splicing matrix line number, stitching position line number and segmented image
Crossed belt height, the method for calculating the ordinate of segmented image starting point coordinate, comprising:
Judge whether stitching position line number is equal to 1, if so, ordinate=0 of segmented image starting point coordinate is calculated, if it is not, then
Calculate ordinate=(the vertical fusion band height of input image resolution height+segmented image)/throwing of segmented image starting point coordinate
Shadow splices the vertical fusion band height+1 of matrix line number * (stitching position line number -1)-segmented image；
Wherein, stitching position line number and stitching position columns are the natural number since 1.
6. the seamless spliced fusion method of projection according to claim 1, which is characterized in that risen described according to segmented image
Point coordinate, segmented image width and segmented image height divide input picture, generate segmented image step and output segmented image
Between step, further includes:
Geometric correction is carried out to segmented image；
To the horizontal fusion band and/or the progress colour correction of vertical fusion band and gamma correction in segmented image.
7. a kind of projection device, which is characterized in that the equipment includes:
Image input processing module obtains input image resolution width and input image resolution for receiving input picture
Highly；
Splice parameter acquisition module, for obtain projection splicing matrix line number, projection splicing matrix columns, stitching position line number and
Stitching position columns；
Device parameter obtains module, sets for obtaining projection device resolution width, projection device resolution height, presetting projection
Standby horizontal fusion bandwidth and the vertical fusion band height of default projection device；
Segmented image parameter calculating module merges bandwidth, segmentation figure for calculating segmented image level according to the data of acquisition
As vertical fusion band height, segmented image width, segmented image height and segmented image starting point coordinate；
Segmented image generation module, for being divided according to segmented image starting point coordinate, segmented image width and segmented image height
Input picture generates segmented image；
Segmented image output module, for exporting segmented image.
8. projection device according to claim 7, which is characterized in that the segmented image parameter calculating module includes:
The horizontal fusion band width computing unit of segmented image, for projection device level to merge bandwidth, projection is set according to presetting
Standby resolution width, projection splicing matrix columns and input image resolution width, calculate segmented image level and merge bandwidth；
The vertical fusion band height calculation unit of segmented image, for being set according to the default vertical fusion band height of projection device, projection
Standby resolution height, projection splicing matrix line number and input image resolution height, calculate the vertical fusion band height of segmented image；
Segmented image width computing unit, for according to input image resolution width, projection splicing matrix columns and segmentation figure
As horizontal fusion bandwidth, segmented image width is calculated；
Segmented image height calculation unit, for according to input image resolution height, projection splicing matrix line number and segmentation figure
As vertical fusion band height, segmented image height is calculated；
The abscissa computing unit of segmented image starting point coordinate, for according to input image resolution width, projection splicing matrix
Columns, stitching position columns and segmented image level merge bandwidth, calculate the abscissa of segmented image starting point coordinate；
The ordinate computing unit of segmented image starting point coordinate, for according to input image resolution height, projection splicing matrix
Line number, stitching position line number and the vertical fusion band height of segmented image calculate the ordinate of segmented image starting point coordinate.
9. projection device according to claim 8, which is characterized in that the horizontal fusion band width of segmented image calculates single
Member merges bandwidth, projection device resolution width, projection splicing matrix columns and input figure according to projection device level is preset
As resolution width, the method for calculating segmented image level fusion bandwidth, comprising:
Segmented image level merges bandwidth=default projection device level fusion bandwidth/(projection device resolution width * throwing
Shadow splicing matrix columns-presets projection device level fusion bandwidth * (projection splicing matrix columns -1)) resolution of * input picture
Rate width；
The vertical fusion band height calculation unit of the segmented image is according to the vertical fusion band height of default projection device, projection device
Resolution height, projection splicing matrix line number and input image resolution height, calculate the vertical fusion band height of segmented image
Method, comprising:
The vertical fusion band height of the segmented image=default vertical fusion band height of projection device/(projection device resolution height * is thrown
Shadow, which splices matrix line number -, presets the vertical fusion band height * of projection device (projection splicing matrix line number -1)) resolution of * input picture
Rate height.
10. projection device according to claim 8, which is characterized in that the segmented image width computing unit is according to defeated
Enter image resolution ratio width, projection splicing matrix columns and segmented image level fusion bandwidth, calculates segmented image width
Method, comprising:
Judge whether stitching position columns is equal to 1 or is equal to projection splicing matrix columns, if so, calculating segmented image width
Rectangular array is spliced in=input image resolution width/projection splicing matrix columns+segmented image level fusion bandwidth/projection
Number, if it is not, then calculating segmented image width=input image resolution width/projection splicing matrix columns+(projection splicing matrix
Columns+1) * segmented image level fusion bandwidth/projection splicing matrix columns；
The segmented image height calculation unit is according to input image resolution height, projection splicing matrix line number and segmented image
Vertical fusion band height, the method for calculating segmented image height, comprising:
Judge whether stitching position line number is equal to 1 or is equal to projection splicing matrix line number, if so, calculating segmented image height
Row matrix is spliced in=input image resolution height/vertical fusion band height/projection of projection splicing matrix line number+segmented image
Number, if it is not, then calculating segmented image height=input image resolution height/projection splicing matrix line number+(projection splicing matrix
Line number+1) the vertical fusion band height of * segmented image/projection splicing matrix line number.
11. projection device according to claim 8, which is characterized in that the abscissa meter of the segmented image starting point coordinate
Unit is calculated to be merged according to input image resolution width, projection splicing matrix columns, stitching position columns and segmented image level
Bandwidth, the method for calculating the abscissa of segmented image starting point coordinate, comprising:
Judge whether stitching position columns is equal to 1, if so, abscissa=0 of segmented image starting point coordinate is calculated, if it is not, then
The abscissa of segmented image starting point coordinate=(input image resolution width+segmented image level merges bandwidth)/is calculated to throw
Shadow splices matrix columns * (stitching position columns -1)-segmented image level and merges bandwidth+1；
The ordinate computing unit of the segmented image starting point coordinate is according to input image resolution height, projection splicing row matrix
Number, stitching position line number and the vertical fusion band height of segmented image, the method for calculating the ordinate of segmented image starting point coordinate, packet
It includes:
Judge whether stitching position line number is equal to 1, if so, ordinate=0 of segmented image starting point coordinate is calculated, if it is not, then
Calculate ordinate=(the vertical fusion band height of input image resolution height+segmented image)/throwing of segmented image starting point coordinate
Shadow splices the vertical fusion band height+1 of matrix line number * (stitching position line number -1)-segmented image；
Wherein, stitching position line number and stitching position columns are the natural number since 1.
12. projection device according to claim 7, which is characterized in that the equipment further includes segmented image correction module,
For carrying out geometric correction to segmented image；To in segmented image horizontal fusion band and/or vertical fusion band carry out color school
Just and gamma correction.
13. a kind of optical projection system, the projection device including at least two as described in any one of claim 7-12.
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