CN105933707A - Compression method and device for panoramic video - Google Patents
Compression method and device for panoramic video Download PDFInfo
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- CN105933707A CN105933707A CN201610507393.4A CN201610507393A CN105933707A CN 105933707 A CN105933707 A CN 105933707A CN 201610507393 A CN201610507393 A CN 201610507393A CN 105933707 A CN105933707 A CN 105933707A
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- panoramic video
- row
- compression ratio
- frame picture
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
- H04N19/169—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding
- H04N19/17—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object
- H04N19/172—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object the region being a picture, frame or field
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/42—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by implementation details or hardware specially adapted for video compression or decompression, e.g. dedicated software implementation
Abstract
The embodiment of the invention discloses a compression method and device for a panoramic video. The method comprises the following steps: for a target panoramic video, generating each frame of image of the target panoramic video; determining a compression ratio of each row of the frame of image according to the number of pixel points of rows of the frame of image; compressing the number of the pixel points of the row corresponding to the compression ratio according to the compression ratio; and generating a new panoramic video according to all compressed images. By adopting the embodiment of the invention, the waste of network bandwidth can be reduced.
Description
Technical field
The present invention relates to video technique field, particularly to compression method and the device of a kind of panoramic video.
Background technology
Panoramic video, refers to 720 degree or 360 degree of panoramic videos.It is complete at 720 degree or 360 degree
On the technology of scape, development extends to.Static panoramic pictures is converted into dynamic video image, entirely by it
Scape video can about shooting angle upper and lower 360 degree arbitrarily watch dynamic video.Panoramic video it does not exist
It is single static panorama graphic form, is to be together in series by countless Zhang Quanjing pictures to constitute smoothness clearly
Dynamic video image.
The player method of panoramic video is at present: panoramic video is sent to client by server；Client
Panoramic video source is decoded into panoramic pictures, according to the current angular of beholder, panoramic pictures is carried out
Extraction, plays the video being made up of the panoramic pictures after extracting.Wherein, the extraction of panoramic video be based on
Picture is attached on spheroid carry out.
But, in actual applications, the panoramic video that user sees is only the panoramic video that server sends
A part.But whole panoramic videos can be sent to client by server, cause unnecessary data
Transmission, in turn results in the waste of the network bandwidth.
Summary of the invention
The purpose of the embodiment of the present invention is to provide compression method and the device of a kind of panoramic video, to reduce net
The waste of network bandwidth.
For reaching above-mentioned purpose, the embodiment of the invention discloses the compression method of a kind of panoramic video, method bag
Include:
For target panoramic video, generate each frame picture of described target panoramic video；
According to the pixel number of described frame picture row, determine the compression ratio of described every a line of frame picture；
According to described compression ratio, the quantity of the pixel of the row corresponding to described compression ratio is compressed；
According to all pictures after compression, generate new panoramic video.
Each frame picture of described target panoramic video is generated for target panoramic video it is also preferred that the left described,
Including:
For target panoramic video, equidistant column sciagraphy is used to generate each frame of described target panoramic video
Picture.
It is also preferred that the left the described pixel number according to described frame picture row, determine described every a line of frame picture
Compression ratio, including:
By the pixel number of described frame picture row, it is defined as the first row of described frame picture and last column
Compression ratio；
By described frame picture removes the compression ratio of the target line of described the first row and last column, it is defined as sin
(the pixel numbers of 2 π y/ row), wherein, y is the line number value of described target line.
For reaching above-mentioned purpose, the embodiment of the invention discloses the compressor of a kind of panoramic video, device bag
Include:
First generation module, for for target panoramic video, generates each frame of described target panoramic video
Picture；
Determine module, for the pixel number according to described frame picture row, determine described every a line of frame picture
Compression ratio；
Compression module, for according to described compression ratio, the quantity of the pixel of the row corresponding to described compression ratio
It is compressed；
Second generation module, for according to all pictures after compression, generating new panoramic video.
It is also preferred that the left described first generation module, specifically for:
For target panoramic video, equidistant column sciagraphy is used to generate each frame of described target panoramic video
Picture.
Module is determined it is also preferred that the left described, specifically for:
By the pixel number of described frame picture row, it is defined as the first row of described frame picture and last column
Compression ratio；
By described frame picture removes the compression ratio of the target line of described the first row and last column, it is defined as sin
(the pixel numbers of 2 π y/ row), wherein, y is the line number value of described target line.
As seen from the above technical solutions, the compression method of a kind of video that the embodiment of the present invention provides and device,
For target panoramic video, generate each frame picture of described target panoramic video；According to described frame picture row
Pixel number, determine the compression ratio of described every a line of frame picture；According to described compression ratio, to described pressure
Contracting is compressed than the quantity of the pixel of corresponding row；According to all pictures after compression, generate new complete
Scape video.
Visible, panoramic video is compressed, the new panoramic video after compression is sent to visitor by server
Unnecessary data are not transmitted by family end, and then decrease the waste of the network bandwidth.
Certainly, arbitrary product or the method for implementing the present invention must be not necessarily required to reach above-described institute simultaneously
There is advantage.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to enforcement
In example or description of the prior art, the required accompanying drawing used is briefly described, it should be apparent that, describe below
In accompanying drawing be only some embodiments of the present invention, for those of ordinary skill in the art, do not paying
On the premise of going out creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
The schematic flow sheet of the compression method of a kind of panoramic video that Fig. 1 provides for the embodiment of the present invention；
The structural representation of the compressor of a kind of panoramic video that Fig. 2 provides for the embodiment of the present invention.
Detailed description of the invention
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 clearly
Chu, be fully described by, it is clear that described embodiment be only a part of embodiment of the present invention rather than
Whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not making creation
The every other embodiment obtained under property work premise, broadly falls into the scope of protection of the invention.
First below the compression method of a kind of panoramic video that the embodiment of the present invention provides is described in detail.
See the flow process signal of the compression method of a kind of panoramic video that Fig. 1, Fig. 1 provide for the embodiment of the present invention
Figure, may include steps of:
S101, for target panoramic video, generates each frame picture of described target panoramic video；
Concrete, each frame picture of the target panoramic video of generation is to use equidistant column sciagraphy to obtain
Panoramic pictures.Equidistant column sciagraphy belongs to prior art, also known as spherical projection, sphere rectangular projection etc.,
The panoramic pictures that obtains of projection be a width length-width ratio be the picture of 2:1, such as: the resolution of the panoramic pictures of generation
Rate size can be 2000*1000, represents that the pixel number of the row of this panoramic pictures is 2000, the picture of row
Vegetarian refreshments number is 1000.
S102, according to the pixel number of described frame picture row, determines the compression ratio of described every a line of frame picture；
Concrete, by the pixel number of described frame picture row, it is defined as the first row and of described frame picture
The compression ratio of rear a line；Described frame picture will remove the compression ratio of the target line of described the first row and last column,
Being defined as sin (the pixel numbers of 2 π y/ row), wherein, y is the line number value of described target line.
Exemplary, the resolution dimensions of this frame panoramic pictures is 2000*1000, represents the pixel of the row of picture
Point number is 2000, and the pixel number of row is 1000, the most a total of 1000 row pixels, and often row has
2000 pixels.The first row of this frame picture and the compression ratio of last column it is defined as, by sin by 2000
(2 π y/2000) i.e. sin (π y/1000) is defined as in this frame picture except the first row and the target line of last column
Compression ratio, y is the line number value of target line, such as, is in the compression ratio of 2000 pixels of the 500th row
For sin (500 π/1000)=1.
S103, according to described compression ratio, the quantity of the pixel of the row corresponding to described compression ratio is compressed；
Concrete, according to the compression ratio determined in S102, the pixel quantity to the every a line in this frame picture
Compression ratio according to correspondence of being expert at is compressed, the picture after being compressed.
Exemplary, this frame resolution dimensions is the panoramic pictures of 2000*1000, the first row and last column
Compression ratio is 2000, is compressed 2000 pixels of the first row and last column, after compression respectively
The pixel quantity of the first row and last column is 1；The compression ratio of 2000 pixels being in the 500th is
1,2000 pixels of the 500th row are compressed, the pixel quantity of the 500th row after compression is 2000,
I.e. keep constant.The pixel quantity of remaining row can also be compressed according to the compression ratio of correspondence of being expert at,
Pixel number value after being compressed.According to the pixel of every a line after compression, new after being compressed
Picture.
S104, according to all pictures after compression, generates new panoramic video.
Concrete, according to all frame pictures after the compression obtained, can use prior art such as to all
Frame picture carries out the modes such as coding, generates the new panoramic video after compression, repeats no more here.
Visible, panoramic video is compressed, the new panoramic video after compression is sent to visitor by server
Unnecessary data are not transmitted by family end, and then decrease the waste of the network bandwidth.
See the structural representation of the compressor of a kind of panoramic video that Fig. 2, Fig. 2 provide for the embodiment of the present invention
Figure, corresponding with the flow process shown in Fig. 1, this compressor may include that the first generation module 201, determines
Module 202, compression module the 203, second generation module 204.
Wherein, the first generation module 201, for for target panoramic video, generate described target panoramic video
Each frame picture；
Concrete, the first generation module 201, specifically may be used for:
For target panoramic video, equidistant column sciagraphy is used to generate each frame of described target panoramic video
Picture.
Determine module 202, for the pixel number according to described frame picture row, determine that described frame picture is each
The compression ratio of row；
Concrete, in actual applications, determine module 202, specifically may be used for:
By the pixel number of described frame picture row, it is defined as the first row of described frame picture and last column
Compression ratio；
By described frame picture removes the compression ratio of the target line of described the first row and last column, it is defined as sin
(the pixel numbers of 2 π y/ row), wherein, y is the line number value of described target line.
Compression module 203, for according to described compression ratio, the number of the pixel of the row corresponding to described compression ratio
Amount is compressed；
Second generation module 204, for according to all pictures after compression, generating new panoramic video.
Visible, panoramic video is compressed, the new panoramic video after compression is sent to visitor by server
Unnecessary data are not transmitted by family end, and then decrease the waste of the network bandwidth.
It should be noted that in this article, the relational terms of such as first and second or the like be used merely to by
One entity or operation separate with another entity or operating space, and not necessarily require or imply these
Relation or the order of any this reality is there is between entity or operation.And, term " includes ", " comprising "
Or its any other variant is intended to comprising of nonexcludability, so that include the mistake of a series of key element
Journey, method, article or equipment not only include those key elements, but also other including being not expressly set out
Key element, or also include the key element intrinsic for this process, method, article or equipment.Do not having
In the case of more restrictions, statement " including ... " key element limited, it is not excluded that including described wanting
Process, method, article or the equipment of element there is also other identical element.
Each embodiment in this specification all uses relevant mode to describe, phase homophase between each embodiment
As part see mutually, what each embodiment stressed is the difference with other embodiments.
For device embodiment, owing to it is substantially similar to embodiment of the method, so the comparison described
Simply, relevant part sees the part of embodiment of the method and illustrates.
One of ordinary skill in the art will appreciate that all or part of step realizing in said method embodiment
The program that can be by completes to instruct relevant hardware, and described program can be stored in computer-readable
Take in storage medium, the storage medium obtained designated herein, such as: ROM/RAM, magnetic disc, CD etc..
The foregoing is only presently preferred embodiments of the present invention, be not intended to limit protection scope of the present invention.
All any modification, equivalent substitution and improvement etc. made within the spirit and principles in the present invention, are all contained in
In protection scope of the present invention.
Claims (6)
1. the compression method of a panoramic video, it is characterised in that including:
For target panoramic video, generate each frame picture of described target panoramic video；
According to the pixel number of described frame picture row, determine the compression ratio of described every a line of frame picture；
According to described compression ratio, the quantity of the pixel of the row corresponding to described compression ratio is compressed；
According to all pictures after compression, generate new panoramic video.
Method the most according to claim 1, it is characterised in that described for target panoramic video, raw
Become each frame picture of described target panoramic video, including:
For target panoramic video, equidistant column sciagraphy is used to generate each frame of described target panoramic video
Picture.
Method the most according to claim 1, it is characterised in that the described picture according to described frame picture row
Vegetarian refreshments number, determines the compression ratio of described every a line of frame picture, including:
By the pixel number of described frame picture row, it is defined as the first row of described frame picture and last column
Compression ratio；
By described frame picture removes the compression ratio of the target line of described the first row and last column, it is defined as sin (2
The pixel number of π y/ row), wherein, y is the line number value of described target line.
4. the compressor of a panoramic video, it is characterised in that described device includes:
First generation module, for for target panoramic video, generates each frame of described target panoramic video
Picture；
Determine module, for the pixel number according to described frame picture row, determine described every a line of frame picture
Compression ratio；
Compression module, for according to described compression ratio, the quantity of the pixel of the row corresponding to described compression ratio
It is compressed；
Second generation module, for according to all pictures after compression, generating new panoramic video.
Device the most according to claim 4, it is characterised in that described first generation module, specifically uses
In:
For target panoramic video, equidistant column sciagraphy is used to generate each frame of described target panoramic video
Picture.
Device the most according to claim 4, it is characterised in that described determine module, specifically for:
By the pixel number of described frame picture row, it is defined as the first row of described frame picture and last column
Compression ratio；
By described frame picture removes the compression ratio of the target line of described the first row and last column, it is defined as sin
(the pixel numbers of 2 π y/ row), wherein, y is the line number value of described target line.
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| CN108573520A (en) * | 2018-01-05 | 2018-09-25 | 深圳市鼎阳科技有限公司 | A kind of display methods and digital spectrum analysis instrument of three-dimensional spectrogram |
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