CN106991640A - A kind of panoramic picture method of deploying and system - Google Patents
A kind of panoramic picture method of deploying and system Download PDFInfo
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- CN106991640A CN106991640A CN201610926281.2A CN201610926281A CN106991640A CN 106991640 A CN106991640 A CN 106991640A CN 201610926281 A CN201610926281 A CN 201610926281A CN 106991640 A CN106991640 A CN 106991640A
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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
- G06T3/06—Topological mapping of higher dimensional structures onto lower dimensional surfaces
- G06T3/073—Transforming surfaces of revolution to planar images, e.g. cylindrical surfaces to planar images
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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
- G06T3/08—Projecting images onto non-planar surfaces, e.g. geodetic screens
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Abstract
The invention provides a kind of panoramic picture method of deploying and system, this method includes：By panorama spherical diagram picture to wait difference of latitude N 1 to be divided into N number of spherical area on longitude, and N number of spherical area is projected respectively, obtain latitude expanded view；The latitude expanded view is divided into M spherical area with difference of longitude M 1 on latitude, and the M spherical area is projected respectively, longitude expanded view is obtained；The hexagon the latter half of the longitude expanded view is uniformly transferred to the hexagon top half of the longitude expanded view and spliced, panoramic plane image is obtained.A kind of panoramic picture method of deploying and system that the present invention is provided, in the case where the plane picture after ensureing expansion is identical in quality, the two dimensional image size after expansion is less than the size of the panoramic picture method of deploying unfolded image of current main flow, reach the purpose saved internal memory and reduce bandwidth.
Description
Technical field
The present invention relates to panoramic picture processing technology field, and in particular to a kind of panoramic picture method of deploying and system.
Background technology
With the fast development of VR (virtual reality) industry, panoramic picture (including panoramic pictures and panoramic video, unite below
Claim panoramic picture) demand also just it is more and more, storage and transmission panoramic picture, it is necessary to the sphere image spread of panoramic picture
And be saved in a plane picture, at present, panoramic video industry uses rectangular projection (equirectangular mostly
Projection), the panoramic picture after projection process is one 2：The image of 1 ratio.
Using the panoramic picture of sphere rectangular projection, the spherical diagram picture of script area very little can be stretched area is very big.
That is, original pixel very low spherical diagram picture, by sphere rectangular projection, it is necessary to which larger-size plane picture goes to preserve,
If preserving or transmitting such image, it is necessary to bigger internal memory and the network bandwidth.
The content of the invention
In order to solve the above problems, the invention provides a kind of panoramic picture method of deploying and system, it is ensured that in exhibition
In the case that plane picture after opening is identical in quality, the two dimensional image size after expansion is set to be less than the panoramic picture exhibition of current main flow
The size of extraction of root unfolded image.
In a first aspect, the invention provides a kind of panoramic picture method of deploying, comprising the following steps：
By panorama spherical diagram picture to wait difference of latitude N-1 to be divided into N number of spherical area on longitude, and by N number of sphere
Region is projected respectively, obtains N number of rectangle, and claims the generally latitude expanded view of N number of rectangle, wherein, N is infinity
Positive integer；
The latitude expanded view is divided into M spherical area on latitude with difference of longitude M-1, and by the M sphere
Region is projected respectively, obtains M hexagon, and claims the generally longitude expanded view of the M hexagon, wherein, M is nothing
Poor big positive integer；
On the hexagon that the hexagon the latter half of the longitude expanded view is uniformly transferred to the longitude expanded view
Half part is simultaneously spliced, and obtains panoramic plane image.
It is preferred that, the width of the picture on any latitude of the latitude expanded view is equal to the panorama sphere
The girth of the latitude of image.
It is preferred that, N number of spherical area is subjected to projection respectively and uses rectangular projection.
It is preferred that, the M spherical area is subjected to projection respectively and uses right and wrong approximate transform.
It is preferred that, the right and wrong approximate transform is that circular arc is stretched or compressed to be in line.
On the other hand, the invention provides a kind of panoramic picture development system, including latitude cutting module, longitude blanking punch
Block and concatenation module.Latitude cutting module on longitude for waiting difference of latitude N-1 to be divided into N number of ball on panorama spherical diagram picture
Face region, and N number of spherical area is projected respectively, N number of rectangle is obtained, and claim the generally latitude of N number of rectangle
Expanded view is spent, wherein, N is infinitely great positive integer.Longitude cutting module, for the latitude expanded view to be passed through on latitude
Degree difference M-1 is divided into M spherical area, and the M spherical area is projected respectively, obtains M hexagon, and claim institute
The generally longitude expanded view of M hexagon is stated, wherein, M is infinitely great positive integer.Concatenation module, for by the longitude
The hexagon the latter half of expanded view is uniformly transferred to the hexagon top half of the longitude expanded view and spliced, and obtains
To panoramic plane image.
It is preferred that, the width of the picture on any latitude of the latitude expanded view is equal to the panorama sphere
The girth of the latitude of image.
It is preferred that, N number of spherical area is subjected to projection respectively and uses rectangular projection.
It is preferred that, the M spherical area is subjected to projection respectively and uses right and wrong approximate transform.
It is preferred that, circular arc is stretched or compressed by the right and wrong approximate transform to be in line.
A kind of panoramic picture method of deploying and system that the present invention is provided, the plane picture after expansion is ensured are identical in quality
In the case of, the two dimensional image size after expansion is less than the size of the panoramic picture method of deploying unfolded image of current main flow,
The purpose saved internal memory and reduce bandwidth is reached, can be big relative to rectangular projection (equirectangular projection)
It is big to reduce redundant data.
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, makes required in being described below to embodiment
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for
For those of ordinary skill in the art, on the premise of not paying creative work, other can also be obtained according to these accompanying drawings
Accompanying drawing.
Fig. 1 is a kind of flow chart of panoramic picture method of deploying disclosed in the embodiment of the present invention；
Fig. 2 is that panorama spherical diagram picture disclosed in the embodiment of the present invention is projected as waiting showing for latitude quartering panoramic expansion image
It is intended to；
Fig. 3 is that panorama spherical diagram picture disclosed in the embodiment of the present invention is projected as waiting latitude N etc. to divide showing for panoramic expansion image
It is intended to；
Fig. 4, which is that the embodiment of the present invention is disclosed, to be waited point panoramic expansion image projections such as latitude N to wait longitude to halve panorama
The schematic diagram of unfolded image and projected image.
Fig. 5, which is that the embodiment of the present invention is disclosed, to be waited point panoramic expansion image projections such as latitude N to wait point panorama exhibitions such as longitude M
Open image and the schematic diagram of projected image.
Fig. 6, which is that the embodiment of the present invention is disclosed, waits point panoramic expansion images such as longitude M to carry out spliced panoramic plane figure
The schematic diagram of picture.
Fig. 7 is a kind of frame diagram of panoramic picture development system disclosed in the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
The embodiment of the invention discloses a kind of panoramic picture method of deploying and system.It is described in detail individually below.
Fig. 1 is referred to, Fig. 1 is a kind of flow chart of panoramic picture method of deploying disclosed in the embodiment of the present invention.In this reality
Apply in mode, panoramic picture is panorama spherical diagram picture, and the expansion process of panorama sphere is described with the expansion process of earth sphere,
And the concept of earth latitude and longitude is refer to, to illustrate the present invention.
In the present embodiment, the flow of panoramic picture method of deploying comprises the following steps：
Step S100, by panorama spherical diagram picture to wait difference of latitude N-1 to be divided into N number of spherical area on longitude, and will be N number of
Spherical area is projected respectively, obtains N number of rectangle, and claims the generally latitude expanded view of N number of rectangle, wherein, N is infinity
Positive integer；
Step S102, M spherical area is divided into by latitude expanded view on latitude with difference of longitude M-1, and by M sphere
Region is projected respectively, obtains M hexagon, and claims the generally longitude expanded view of M hexagon, wherein, M is infinity
Positive integer；
Step S104, the hexagon the latter half of longitude expanded view is uniformly transferred on the hexagon of longitude expanded view
Half part is simultaneously spliced, and obtains panoramic plane image.
Specifically, the width of the picture on any latitude of latitude expanded view, be equal to panorama spherical diagram as
The girth of corresponding latitude, and N number of spherical area is subjected to projection respectively uses rectangular projection.
Further, M spherical area is carried out to projection respectively and uses right and wrong approximate transform, and right and wrong approximate transform
Circular arc is stretched or compressed and is in line.
In order to further illustrate the embodiment of the present invention, Fig. 2 is referred to, Fig. 2 is panorama sphere disclosed in the embodiment of the present invention
Image projection is to wait the schematic diagram of latitude quartering panoramic expansion image.
It has been observed that for the ease of description, the present embodiment still describes panorama sphere using the expansion process of earth sphere
Expansion process, and refer to the concept of earth latitude and longitude.
What Fig. 2 was represented is that, as N=4, panorama spherical diagram picture is projected as waiting the signal of latitude quartering panoramic expansion image
Figure, as illustrated, panorama spherical diagram picture is projected through rectangular projection and obtains waiting latitude quartering panoramic expansion image, wherein,
It is equal to the girth of panorama spherical diagram picture Deng the center section length in latitude quartering panoramic expansion image, and waits the value of latitude to be
πd/8。
When N is infinity, it is projected as waiting latitude referring to Fig. 3, Fig. 3 is panorama spherical diagram picture disclosed in the embodiment of the present invention
Spend the schematic diagram of N etc. points of panoramic expansion image.As illustrated, panorama spherical diagram picture is projected through rectangular projection and obtains waiting latitude
N etc. points of panoramic expansion images, wherein, wait the length of zero latitude line in latitude N etc. points of panoramic expansion images to be equal to panorama sphere
The girth of image.Have visible in figure, after rectangular projection, sheetage is 1：1.
Please continue to refer to Fig. 4, Fig. 4 be the embodiment of the present invention it is disclosed wait latitude N etc. points of panoramic expansion image projection for etc.
Longitude halves panoramic expansion image and the schematic diagram of projected image.In the present embodiment, as M=2, latitude N etc. is waited
Divide by projection in panoramic expansion image, and use right and wrong approximate transform simultaneously, obtain waiting longitude bisection panoramic expansion image.
Wherein, right and wrong approximate transform is based on stretches or is compressed to straight line by circular arc.
Specifically, in Fig. 4, dotted line is halves panoramic expansion image, and solid line is perspective view after bisection expansion
Picture, it can be seen that 8 points of a certain latitude are stretched and compressed transform respectively, obtains hexagonal image.Its
In, it is stretched at A points at X, is stretched at Y, is stretched at D points at Z respectively at B points and C points, E points are compressed to J
Point, K points are compressed to by F points, and G points are compressed into M points, and H points are compressed into N points.Further, by four point A on circular arc, B, C,
D latitude line is any latitude line, and by the institute between four point A, B, C, D latitude line and zero degree latitude line on this circular arc
It is all the stretched straight line obtained perpendicular to zero degree latitude line to have the point on circular arc, that is, the distance between straight line after stretching is
Equator length.Further, the point on all circular arcs between four point A, B, C, D of dome and process latitude line is
It is in line through overcompression or stretching, as E points are compressed into J points, F points is compressed to K points, G points are compressed to M points, by H points
It is compressed to shown in N points.
So the circular arc of circular arc top half passes through right and wrong conversion, that is, stretches and compress and obtain line pattern.
Likewise, the point on the lower half circular arc corresponding with upper half circular arc is handled by same stretching and compression, from
And form two hexagons.As can be seen here, deploy by halving, two hexagons can be obtained.
Referring again to Fig. 5, Fig. 5, which is that the embodiment of the present invention is disclosed, to be waited point panoramic expansion image projections such as latitude N to wait longitude M
The schematic diagram of decile panoramic expansion image and projected image.In the present embodiment, when M is infinity, still using Fig. 4
Similar method, the every bit on the circular arc of Same Latitude is stretched.Such as Fig. 5, a is stretched to x, b is stretched to
Y, other each points in circular arc top half are stretched or compressed accordingly.Similarly, in circular arc the latter half
Other each points are stretched or compressed accordingly.Whole circular arc passes through compression and tension, so that it is infinitesimal to obtain loss
Hexagonal image.
Further, point panoramic expansion images such as longitude M are waited to carry out referring to Fig. 6, Fig. 6 is that the embodiment of the present invention is disclosed
The schematic diagram of spliced panoramic plane image.
When M is infinity, the hexagon the latter half of M etc. points of panoramic expansion images is uniformly transferred to M deciles complete
The hexagon top half of scape unfolded image is simultaneously spliced, and obtains M etc. points of panoramic mosaic plane picture.
By above-mentioned processing, the panoramic plane image finally obtained is relative to the panoramic plane figure that rectangular projection is directly obtained
As for, redundant data can be greatly reduced, the purpose saved internal memory and reduce bandwidth is reached.
Referring to Fig. 7, Fig. 7 is a kind of frame diagram of panoramic picture development system 70 disclosed in the embodiment of the present invention.At this
In embodiment, panoramic picture is panorama spherical diagram picture, and the expansion of panorama sphere is described with the expansion process of earth sphere
Journey, and the concept of earth latitude and longitude is refer to, to illustrate the present invention.Specifically, panoramic picture development system 70 is wrapped
Include latitude cutting module 701, longitude cutting module 703 and concatenation module 705.
Latitude cutting module 701 on longitude for waiting difference of latitude N-1 to be divided into N number of sphere area on panorama spherical diagram picture
Domain, and N number of spherical area is projected respectively, N number of rectangle is obtained, and claim the generally latitude expanded view of N number of rectangle, its
In, N is infinitely great positive integer.
Longitude cutting module 703 is used to latitude expanded view being divided into M spherical area on latitude with difference of longitude M-1,
And projected M spherical area respectively, M hexagon is obtained, and claim the generally longitude expanded view of M hexagon, its
In, M is infinitely great positive integer.
Concatenation module 705 is used to the hexagon the latter half of longitude expanded view being uniformly transferred to the six of longitude expanded view
Side shape top half is simultaneously spliced, and obtains panoramic plane image.
By in panoramic picture development system modules processing after, the panoramic plane image finally obtained relative to
For the panoramic plane image that rectangular projection is directly obtained, greatly reduce redundant data, reach and save internal memory and reduce bandwidth
Purpose.
A kind of panoramic picture development system provided above the embodiment of the present invention is described in detail, and herein should
The principle and embodiment of the present invention are set forth with instantiation, the explanation of above example is only intended to help and managed
Solve the method and its core concept of the present invention；Simultaneously for those of ordinary skill in the art, according to the thought of the present invention,
It will change in embodiment and application, in summary, this specification content should not be construed as to this hair
Bright limitation.
Claims (10)
1. a kind of panoramic picture method of deploying, it is characterised in that comprise the following steps：
By panorama spherical diagram picture to wait difference of latitude N-1 to be divided into N number of spherical area on longitude, and by N number of spherical area
Projected respectively, obtain N number of rectangle, and claim the generally latitude expanded view of N number of rectangle, wherein, N for it is infinitely great just
Integer；
The latitude expanded view is divided into M spherical area on latitude with difference of longitude M-1, and by the M spherical area
Projected respectively, obtain M hexagon, and claim the generally longitude expanded view of the M hexagon, wherein, M is infinity
Positive integer；
The hexagon the latter half of the longitude expanded view is uniformly transferred to the hexagon first half of the longitude expanded view
Divide and spliced, obtain panoramic plane image.
2. panoramic picture method of deploying according to claim 1, it is characterised in that also include：The latitude expanded view
The width of picture on any latitude, is equal to the girth of the corresponding latitude of the panorama spherical diagram picture.
3. panoramic picture method of deploying according to claim 2, it is characterised in that also include：By N number of spherical area
Projection is carried out respectively uses rectangular projection.
4. panoramic picture method of deploying according to claim 2, it is characterised in that also include：By the M spherical area
Projection is carried out respectively uses right and wrong approximate transform.
5. panoramic picture method of deploying according to claim 4, it is characterised in that also include：The right and wrong approximate transform
It is based on that circular arc is stretched or compressed and is in line.
6. a kind of panoramic picture development system, it is characterised in that including：
Latitude cutting module, for waiting difference of latitude N-1 to be divided into N number of spherical area on longitude on panorama spherical diagram picture, and
N number of spherical area is projected respectively, N number of rectangle is obtained, and claims the generally latitude expanded view of N number of rectangle,
Wherein, N is infinitely great positive integer；
Longitude cutting module, for the latitude expanded view to be divided into M spherical area with difference of longitude M-1 on latitude, and
The M spherical area is projected respectively, M hexagon is obtained, and claim the generally longitude of the M hexagon to deploy
Figure, wherein, M is infinitely great positive integer；
Concatenation module, for the hexagon the latter half of the longitude expanded view to be uniformly transferred into the longitude expanded view
Hexagon top half is simultaneously spliced, and obtains panoramic plane image.
7. panoramic picture development system according to claim 6, it is characterised in that also include：The latitude expanded view
The width of picture on any latitude, is equal to the girth of the latitude of the panorama spherical diagram picture.
8. panoramic picture development system according to claim 7, it is characterised in that also include：By N number of spherical area
Projection is carried out respectively uses rectangular projection.
9. panoramic picture development system according to claim 7, it is characterised in that also include：By the M spherical area
Projection is carried out respectively uses right and wrong approximate transform.
10. panoramic picture development system according to claim 9, it is characterised in that also include：The right and wrong approximate transform
Be that circular arc is stretched or compressed to be in line.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610926281.2A CN106991640B (en) | 2016-10-31 | 2016-10-31 | Panoramic image unfolding method and system |
| PCT/CN2017/084481 WO2018076663A1 (en) | 2016-10-31 | 2017-05-16 | Method and system for unwrapping panoramic image |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610926281.2A CN106991640B (en) | 2016-10-31 | 2016-10-31 | Panoramic image unfolding method and system |
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| CN106991640B CN106991640B (en) | 2020-06-16 |
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| CN110794646A (en) * | 2019-10-15 | 2020-02-14 | 河北汉光重工有限责任公司 | Design method for processing fuse trigger on optical fairing |
| WO2020063547A1 (en) * | 2018-09-26 | 2020-04-02 | 华为技术有限公司 | Spherical image processing method and apparatus, and server |
| CN111731190A (en) * | 2020-07-24 | 2020-10-02 | 展讯通信(天津)有限公司 | Display method and system of vehicle-mounted AVM, electronic equipment and storage medium |
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| CN106056531A (en) * | 2016-05-13 | 2016-10-26 | 杭州当虹科技有限公司 | Displaying method for unfolding 360-degree panorama video spherical surface to plane |
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| WO2020063547A1 (en) * | 2018-09-26 | 2020-04-02 | 华为技术有限公司 | Spherical image processing method and apparatus, and server |
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Also Published As
| Publication number | Publication date |
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| CN106991640B (en) | 2020-06-16 |
| WO2018076663A1 (en) | 2018-05-03 |
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Address after: Building 4D, Gongyanhui Science and Technology Industrial Park, No. 160, Xihu West Road, Wujin National High and New Technology Industrial Development Zone, Changzhou City, Jiangsu Province, 213166 Patentee after: Pi Technology (Changzhou) Co.,Ltd. Address before: No.09, 8th Floor, International Student Entrepreneurship Building, No. 29 South Ring, High tech Zone, Nanshan District, Shenzhen, Guangdong Province, 518000 Patentee before: SHENZHEN PISOFTTECH TECHNOLOGY Co.,Ltd. |