CN107633545A - A kind of processing method of panoramic picture - Google Patents
A kind of processing method of panoramic picture Download PDFInfo
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- CN107633545A CN107633545A CN201710740125.1A CN201710740125A CN107633545A CN 107633545 A CN107633545 A CN 107633545A CN 201710740125 A CN201710740125 A CN 201710740125A CN 107633545 A CN107633545 A CN 107633545A
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- panoramic picture
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- mapping table
- weighing factor
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Abstract
The invention discloses a kind of processing method of panoramic picture, comprise the following steps：A) panoramic picture is generated, at least two initial pictures are calculated so as to generate corresponding mapping table by GPU, then the weighing factor of each pixel of the image is calculated by mapping table, so as to generate weighing factor table, at least two primary panoramic pictures are generated by mapping table again, finally mixing primary panoramic picture using weighing factor table generates final panoramic picture；B) final panoramic picture is plotted in spherical three-dimensional scenic；C) deviation at manual correction image mosaic；The processing method of the panoramic picture is presented in a spherical three-dimensional coordinate by the way that multiple images are synthesized into a Zhang Quanjing image, vivid, it is necessary to when changing, and need to only be spliced either manually or by the one of image of mouse drag, simple to operate, effect is good.
Description
Technical field
The present invention relates to technical field of image processing, more particularly to a kind of processing method of panoramic picture.
Background technology
Panoramic picture is typically all to be come out by multiple image mosaics, and the manufacturing process of existing panoramic picture is logical mostly
Cross what software automatically generated, but because software leak in itself and intelligent effect are low so the panorama sketch automatically generated
As having many flaws in stitching portion, because the distant view photograph of splicing might have because the depth of field is different or calibrated error is asked
Topic causes stitching portion to have dislocation, and causes that whole Zhang Quanjing image effect is poor, and practicality is not strong.
The content of the invention
In order to solve the problems, such as that existing panoramic picture treatment effect is undesirable, the present invention provides a kind of simple to operate, place
Manage the processing method of the good panoramic picture of effect.
To achieve these goals, technical scheme provided by the invention is：A kind of processing method of panoramic picture, including with
Lower step：A) panoramic picture is generated, at least two initial pictures are calculated so as to generate corresponding mapping table by GPU, then
The weighing factor of each pixel of the image is calculated by mapping table, so as to generate weighing factor table, then by mapping table generate to
Few two primary panoramic pictures, finally mix primary panoramic picture using weighing factor table and generate final panoramic picture；B) will
Final panoramic picture is plotted in spherical three-dimensional scenic；C) deviation at manual correction image mosaic.
As with preferable technical scheme, the quantity for being used to generate the initial pictures of panoramic picture is four, and four
Open image to form in same position shooting, the shooting angle between adjacent two images differs 80 ° to 90 °.
Further, the data in the weighing factor table include each pixel distance image center location it is horizontal away from
From according to weighted value, to calculate the color of corresponding pixel points.
As further technical scheme, mapping table and the weighing factor table is stored in video memory.
Further, the mapping table is generated by the distortion parameter of camera.
It is of the invention to be relative to the beneficial effect of prior art：The processing method of the panoramic picture is by the way that multiple images are closed
It is presented on into a Zhang Quanjing image in a spherical three-dimensional coordinate, it is vivid, it is necessary to when changing, only need to be either manually or by mouse
Drag one of image to be spliced, simple to operate, effect is good.
Brief description of the drawings
Fig. 1 is the flow chart of the present invention；
Fig. 2-5 is the artwork before the image procossing of the present invention；
Fig. 6-9 is that the image of the present invention is the image that artwork passes through mapping equation expansion；
Figure 10-13 is the weighing factor table image of the present invention；
Figure 14 is the image after present invention synthesis.
Embodiment
The embodiment of the present invention is described further below in conjunction with the accompanying drawings.Herein it should be noted that for
The explanation of these embodiments is used to help understand the present invention, but does not form limitation of the invention.It is in addition, disclosed below
As long as each embodiment of the invention in involved technical characteristic do not form conflict can each other and be mutually combined.
As shown in figure 1, a kind of processing method of panoramic picture, the panoramic picture is come by four image procossings, and this four
Image is opened by four wide-angle lens shootings to come, and this four wide-angle lens differ 80 ° extremely between same position and each two
90 ° of settings, as preferable technical scheme, in the present embodiment, using 90 ° of settings, by the image of four lens shootings out
Computer is imported, processing procedure is as follows：
S11：OpenGL running statuses, storage allocation and video memory resource are initialized, loads coloration program；
S12：Obtain the distortion parameter of panorama camera；The distortion parameter of each camera has just produced when camera dispatches from the factory
It is raw, the supplemental characteristic only need to be imported to the program, the parameter includes coefficient of radial distortion and tangential distortion parameter；It is radially abnormal
Become and occur during camera coordinates system turns image physical coordinates system, and tangential distortion is occurred in camera manufacturing process.
S13：Coloration program is run in video card, the mapping table of panoramic picture is generated according to distortion parameter；
According to the height and width for ultimately producing panoramic picture, an equal amount of mapping form, form are created in video card
Each element can run a coloration program, coloration program calculates a position of four source images, below
Program can take four pixel color values of four source images to be mixed by lookup table mode, and this four positions, which can be all stored in, to be reflected
In firing table.
Citing：Assuming that panorama sketch size is 7680x3840, the size that four Zhang Yuans scheme every image is 4608x3456.Then reflect
The size of firing table is 7680x3840, and each element saves eight short data, for example, some element in value for (2031,
1023,4011,2111,3241,2145,2344,3120), then it represents that respectively from the 2031st row the 1023rd of first Zhang Yuan's image
The pixel position of row takes out first color value, and the pixel position arranged from the 4011st row the 2111st of second Zhang Yuan's image takes
Going out second color value, the pixel position arranged from the 3241st row the 2145th of the 3rd Zhang Yuan's image takes out the 3rd color value,
The pixel position arranged from the 2344th row the 3120th of the 4th Zhang Yuan's image takes out the 4th color value.
For coloration program, if panorama sketch size is 7680x3840,7680x3840 tinter can be run, is counted
Calculate the content of each pixel element in mapping table.
The process that tinter solves, then be by three distortion parameters of every camera and the center of taken a picture camera
Opening position is calculated, specific formula be (0.5*width+dr*px/r+xoff, 0.5*height+r*py/r+yoff) wherein,
Width is picture traverse, and height is picture altitude；Px represents to be currently running pixel position and the fish eye images of tinter
The deviation of the horizontal level at center；Py represents to be currently running the pixel position position vertical with fish eye images center of tinter
The deviation put；Dr is the radius of the circumference fish eye images after correction, is solved and drawn by three distortion parameters (a, b, c)；R is original
Taken pictures in figure the radius size of formed circle；Xoff, yoff represent the skew of lens location respectively.
Implementation process is as follows, four Zhang Yuans first scheme as shown in Figure 2-5, then according to mapping table deploy four figure, obtain as
Shown in Fig. 6-9.
S14：Weighing factor of four wide-angle lens to each pixel of panoramic picture is calculated according to mapping table, and preserved
For weighing factor table；Weighing factor is used for calculating position of the center in panorama sketch of each camera lens, calculates each pixel distance mirror
The horizontal range of head center, the more remote weighted value of distance is lower, according to weighted value, to calculate corresponding pixel points color, is used for
The aberration of optimization splicing seam crossing, improves splicing effect；The weighted value sum of wherein four pixels is necessary for 1.0.
The image of every expansion calculates the distance of each pixel distance center to draw hybrid weight percentage, calculates
The four weight tables gone out, as shown in figures 10-13；
S15：The weighing factor table and mapping table of generation are uploaded to video memory；
S16：Four primary panoramic pictures are generated by the mapping table in video memory, every primary panoramic picture only includes one
The picture material of source images；
S17：Four primary panoramic pictures are mixed by the weighing factor table in video memory and obtain final panoramic picture；
Finally mixed, as a result such as Figure 14 institutes；
S21：Final panoramic picture is drawn out on the sphere in three-dimensional scenic by spherical mapping equation；
A spheroid is first drawn in three-dimensional scenic first, the plane panorama sketch obtained before is then mapped to spheroid
On, specific method is any point coordinate (x, y, z) on spheroid, can calculate longitude and latitude, longitude range for-
180 degree is spent to 90 degree to 180 degree, latitude scope for -90.
S31：Deviation at user's manual correction image mosaic；Pass through the scope of mouse selection amendment and the position of amendment；
Because stitching portion has a corresponding object of reference, user need to only select an object of reference and carry out two images of stitching portion pair
Than, the part overlapped is then selected, it is simple to operate；
S32：Position judgment according to amendment is which image is impacted；Then the image is selected to be modified splicing；
Selection one needs mobile image, then causes stitching portion slitless connection to both sides movement；
S41：Amendment terminates, deduced image file, bolt down procedure, the video memory and internal memory distributed in release procedure running
Resource.
Embodiments of the present invention are explained in detail above in association with accompanying drawing, but the invention is not restricted to described implementation
Mode.For a person skilled in the art, in the case where not departing from the principle of the invention and spirit, to these embodiments
A variety of change, modification, replacement and modification are carried out, are still fallen within protection scope of the present invention.
Claims (5)
1. a kind of processing method of panoramic picture, it is characterised in that comprise the following steps：A) panoramic picture is generated, will at least two
Open initial pictures to calculate so as to generate corresponding mapping table by GPU, each pixel of the image is then calculated by mapping table
Weighing factor, so as to generate weighing factor table, then by mapping table generation at least two primary panoramic pictures, finally utilize influence
Weight table mixes primary panoramic picture and generates final panoramic picture；B) final panoramic picture is plotted in spherical three dimensional field
Jing Zhong；C) deviation at manual correction image mosaic.
2. processing method according to claim 1, it is characterised in that：The initial pictures for being used to generate panoramic picture
Quantity is four, and four images form in same position shooting, and the shooting angle between adjacent two images differs 80 ° to 90
Degree.
3. processing method according to claim 1 or 2, it is characterised in that：Data in the weighing factor table include every
The horizontal range of the individual pixel distance image center location, according to weighted value, to calculate the color of corresponding pixel points.
4. processing method according to claim 1, it is characterised in that：Mapping table and the weighing factor table is stored in video memory
In.
5. processing method according to claim 1, it is characterised in that：The mapping table is given birth to by the distortion parameter of camera
Into.
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Application publication date: 20180126 |