CN103533352B - Compression method and device and decompression method and device for image with transparency - Google Patents
Compression method and device and decompression method and device for image with transparency Download PDFInfo
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Abstract
The invention relates to a compression method and device and a decompression method and device for an image with transparency. A compression method for the image with transparency comprises the steps of obtaining the image data of original channels A, R, G and B of the image with transparency; respectively pre-multiplying the image data of the channels R, G and B by the image data of the channel A, wherein a pre-multiplying formula is RGB=RGB*A/MAX (A), MAX (A) denotes the maximum value of the data of the channel A; saving the image data of the channels R, G and B obtained through pre-multiplication as a first nontransparent image and saving the image data of the channel A as a second nontransparent image, wherein a formula for the image data of the channel A is R=G=B=A; respectively compressing the first nontransparent image and the second nontransparent image by adopting a nontransparent image lossy compression algorithm. The compression method and device for the image with transparency provided by the invention have the advantage that the compression ratio of the image with transparency is improved.
Description
Technical field
The present invention relates to image processing field, the compression method of more particularly, to a kind of image with transparency and device, solution
Compression method and device.
Background technology
Compression of images in multimedia application needs higher compression ratio, thus the compression of images in multimedia application is led to
Frequently with compression method.The feature of lossy compression method is: the image one, being compressed and original image are incomplete same；2nd, than no
The compression ratio damaging compression exceeds a lot.Existing popular Image Lossy Compression algorithm does not generally support transparency, and this makes such
Popular Image Lossy Compression algorithm cannot be applied to the compression with transparency image.
Content of the invention
The technical problem to be solved is to provide a kind of compression method of the image with transparency and device, decompression
Compression method and device, improve compression ratio.
For solving above-mentioned technical problem, the present invention proposes a kind of compression method of the image with transparency, comprising:
Step one, obtains the view data of tetra- passages of original a, r, g, b of the image with transparency；
Step 2, the view data of tri- passages of r, g, b is carried out respectively pre-multiplied, the public affairs of pre-multiplied with a channel image data
Formula is: r ＇ g ＇ b ＇=rgb*a/max (a), wherein, max (a) refers to the maximum of a channel data；
Step 3, the r ＇ obtaining, g ＇, b ＇ triple channel view data is saved as the first opaque image, a is led to after pre-multiplied
Road view data saves as the second opaque image, and the view data formula of a passage is r=g=b=a, r=g=b=a refer to by
A channel data in the described image with transparency is as the three-channel data of r, g, b of the described second opaque image；
Step 4, using opaque image Lossy Compression Algorithm respectively to the first opaque image and the second opaque image
It is compressed.
Further, the compression method of the above-mentioned image with transparency also can have the characteristics that, also includes:
Two images obtaining after first opaque image and the second opaque compression of images are deposited by step 5 respectively
Storage and transmission, or, two images obtaining after the first opaque image and the second opaque compression of images are combined into list
Individual file carries out storing, transmits.
For solving above-mentioned technical problem, the present invention proposes a kind of compressor of the image with transparency, including sequentially
Connected acquisition module, pre-multiplied module, preserving module and compression module, wherein:
Acquisition module, for obtaining the view data of tetra- passages of original a, r, g, b of the image with transparency；
Pre-multiplied module, for the view data of tri- passages of r, g, b is carried out pre-multiplied with a channel image data respectively, in advance
The formula taken advantage of is: r ＇ g ＇ b ＇=rgb*a/max (a), wherein, max (a) refers to the maximum of a channel data；
Preserving module, for obtaining the r ＇ obtaining after pre-multiplied, g ＇, that b ＇ triple channel view data saves as first is opaque
Image, a channel image data is saved as the second opaque image, the view data formula of a passage is r=g=b=a, r=g
=b=a refer to using a channel data in the described image with transparency as the described second opaque image r, g, b triple channel
Data；
Compression module, for obtaining using opaque image Lossy Compression Algorithm respectively to the first opaque image and second
Opaque image is compressed.
Further, the compression method of the above-mentioned image with transparency also can have the characteristics that, also includes:
Transport module, for two images obtaining after the first opaque image and the second opaque compression of images respectively
Stored and transmitted, or, the first opaque image is combined with two images obtaining after the second opaque compression of images
Become single file to carry out storing, transmit.
For solving above-mentioned technical problem, the present invention proposes a kind of decompression method of the image with transparency, comprising:
Step one, to the first opaque image of compression belonging to the same image with transparency and the second opaque figure of compression
As being decompressed respectively, obtain the first opaque image and the second opaque image, a, r, g, b are original with transparency
The view data of original four passages of image, the view data of tri- passages of r, g, b is carried out with a channel image data respectively
Pre-multiplied, the formula of pre-multiplied is: r ＇ g ＇ b ＇=rgb*a/max (a), wherein, max (a) refers to the maximum of a channel data；Described
One opaque image be pre-multiplied after obtain r ＇, g ＇, b ＇ triple channel view data, a channel image data is saved as second not
Transparent image, the view data formula of a passage is r=g=b=a, and r=g=b=a refers in the described image with transparency
A channel data is as the three-channel data of r, g, b of the described second opaque image；
Step 2, carries out the inverse operation of pre-multiplied, obtains the original of the image with transparency to the first opaque view data
R, g, b triple channel, the formula of pre-multiplied is: r ＇ g ＇ b ＇=rgb*a/max (a), wherein, max (a) refers to the maximum of a channel data
Value.
For solving above-mentioned technical problem, the present invention proposes a kind of decompressing device of the image with transparency, comprising:
Decompression module, for the first opaque image of compression belonging to the same image with transparency and the second compression
Opaque image is decompressed respectively, obtains the first opaque image and the second opaque image；
A, r, g, b are the view data of original four passages of the original image with transparency, by tri- passages of r, g, b
View data carry out pre-multiplied with a channel image data respectively, the formula of pre-multiplied is: r ＇ g ＇ b ＇=rgb*a/max (a), wherein,
Max (a) refers to the maximum of a channel data；Described first opaque image be pre-multiplied after obtain r ＇, g ＇, b ＇ triple channel image
Data, a channel image data is saved as the second opaque image, the view data formula of a passage is r=g=b=a, r=g
=b=a refer to using a channel data in the described image with transparency as the described second opaque image r, g, b triple channel
Data；
Inverse pre-multiplied module, for the first opaque view data is carried out with the inverse operation of pre-multiplied, obtains the figure with transparency
Original r, g, b triple channel of picture, the formula of pre-multiplied is: r ＇ g ＇ b ＇=rgb*a/max (a), wherein, max (a) refers to a port number
According to maximum.
The compression method of the image with transparency of the present invention and device, using opaque image Lossy Compression Algorithm to band
Transparency image is compressed, and the method, by carrying out pre-multiplied to rgb passage in transparent image and a passage, is effectively improved
The compression effectiveness to transparent region for the Image Lossy Compression algorithm, by saving as two respectively by the rgb passage after pre-multiplied and a passage
The method of opaque image is so that the opaque image Lossy Compression Algorithm of transparent image compression originally cannot be applied to, existing
Carried out transparent image compression, thus improve the compression ratio of the image with transparency.The image with transparency of the present invention
Decompression method and device, can be from using the present invention picture number that obtains of compression of the compression method with the image of transparency
According in restore the original argb four-way track data with transparency image.
Brief description
Fig. 1 is the flow chart of the compression method of the image with transparency in the embodiment of the present invention；
Fig. 2 is the structured flowchart of the compressor of the image with transparency in the embodiment of the present invention；
Fig. 3 is the flow chart of the decompression method of the image with transparency in the embodiment of the present invention；
Fig. 4 is the structured flowchart of the decompressing device of the image with transparency in the embodiment of the present invention.
Specific embodiment
Below in conjunction with accompanying drawing, the principle of the present invention and feature are described, example is served only for explaining the present invention, and
Non- for limiting the scope of the present invention.
Fig. 1 is the flow chart of the compression method of the image with transparency in the embodiment of the present invention.As shown in figure 1, this enforcement
In example, the flow process of the compression method of the image with transparency may include steps of:
Step s101, obtains the view data of tetra- passages of original a, r, g, b of the image with transparency；
Step s102, the view data of tri- passages of r, g, b is carried out pre-multiplied with a channel image data respectively, pre-multiplied
Formula is: r ＇ g ＇ b ＇=rgb*a/max (a), wherein, max (a) refers to the maximum of a channel data；
Step s103, the r ＇ obtaining, g ＇, b ＇ triple channel view data is saved as the first opaque image, by a after pre-multiplied
Channel image data saves as the second opaque image, and the view data formula of a passage is r=g=b=a, and r=g=b=a refers to
Using a channel data in the described image with transparency as the described second opaque image the three-channel data of r, g, b；
Second opaque image is the black white image that a width represents a channel data in original tape transparency image.
Step s104, using opaque image Lossy Compression Algorithm respectively to the first opaque image and the second opaque figure
As being compressed.
So far, just complete the process of compression.After compression, both the image after two width compressions can be stored respectively, transmitted,
Image after two width compressions can also be combined into single file to carry out storing, transmit.
The compression method of the image with transparency of the present invention, using opaque image Lossy Compression Algorithm to band transparency
Image is compressed, and the method, by carrying out pre-multiplied respectively to r, g, b triple channel in transparent image and a passage, effectively improves
The compression effectiveness to transparent region for the Image Lossy Compression algorithm, by by the r ＇ after pre-multiplied, g ＇, b ＇ passage and a passage respectively
Save as the method for two opaque images so that the opaque image lossy compression method of transparent image compression originally cannot be applied to
Algorithm, is now carried out transparent image compression, thus improve the compression ratio of the image with transparency.
The invention allows for a kind of compressor of the image with transparency, in order to implement the above-mentioned figure with transparency
The compression method of picture.
Fig. 2 is the structured flowchart of the compressor of the image with transparency in the embodiment of the present invention.As shown in Fig. 2 this reality
Apply in example, the compressor of the image with transparency includes acquisition module 210, pre-multiplied module 220, preserving module 230 and compression
Module 240.Acquisition module 210, pre-multiplied module 220, preserving module 230 and compression module 240 are sequentially connected.Wherein, obtain mould
Block 210 is used for obtaining the view data of tetra- passages of original a, r, g, b of the image with transparency.Pre-multiplied module 220 is used for will
The view data of tri- passages of r, g, b carries out pre-multiplied with a channel image data respectively, and the formula of pre-multiplied is: r ＇ g ＇ b ＇=rgb*
A/max (a), wherein, max (a) refers to the maximum of a channel data.Preserving module 230 be used for obtain by the r ＇ obtaining after pre-multiplied,
G ＇, b ＇ triple channel view data save as the first opaque image, and a channel image data is saved as the second opaque image, a
The view data formula of passage is r=g=b=a, and r=g=b=a refers to a channel data in the described image with transparency
The three-channel data of r, g, b as the described second opaque image.Compression module 240 is used for obtaining to be had using opaque image
Damage compression algorithm respectively the first opaque image to be compressed with the second opaque image.
In other embodiments of the present invention, the compressor of the image with transparency can also include transport module.Transmission
Module is used for two images obtaining after the first opaque image and the second opaque compression of images being stored respectively and passing
Defeated, or, two images obtaining after the first opaque image and the second opaque compression of images are combined into single file
Carry out storing, transmit.
The compressor of the image with transparency of the present invention, using opaque image Lossy Compression Algorithm to band transparency
Image is compressed, and this device, by carrying out pre-multiplied to r, g, b passage in transparent image and a passage, is effectively improved and damages
The compression effectiveness to transparent region for the image compression algorithm, by saving as the r ＇ after pre-multiplied, g ＇, b ＇ passage and a passage respectively
The method of two opaque images so that the opaque image Lossy Compression Algorithm of transparent image compression originally cannot be applied to,
Now carried out transparent image compression, thus improve the compression ratio of the image with transparency.
The invention allows for a kind of decompression method of the image with transparency, in order to by above-mentioned with transparency
The data that the compression method compression of image obtains carries out decompression, restores original a, r, g, the b tetra- with transparency image
Channel data.The process of this decompression is the inverse process of the compression method step of the image with transparency.Below by embodiment
Carry out illustratively this decompression process.
Fig. 3 is the flow chart of the decompression method of the image with transparency in the embodiment of the present invention.As shown in figure 3, this reality
Apply in example, the flow process of the decompression method of the image with transparency may include steps of:
Step s301 is opaque with the second compression to the first opaque image of compression belonging to the same image with transparency
Image is decompressed respectively, obtains the first opaque image and the second opaque image, after the first opaque image is pre-multiplied
R ＇, g ＇, b ＇ triple channel image, the second opaque image is by a channel image；
Here the first opaque image of compression refers in the compression method embodiment of the image with transparency shown in Fig. 1
The image obtaining after step s104 is to the first opaque compression of images, the second opaque image of compression refers to shown in Fig. 1
The image obtaining after step s104 is to the second opaque compression of images in the compression method embodiment of the image with transparency.
Step s302, carries out the inverse operation of pre-multiplied, obtains the former of the image with transparency to the first opaque view data
R, g, b triple channel beginning, the formula of pre-multiplied is: r ＇ g ＇ b ＇=rgb*a/max (a), wherein, max (a) refers to a channel data
Big value.
The decompression method of the image with transparency of the present invention, can from using the present invention with the image of transparency
The original argb four-way track data with transparency image is restored in the view data that compression method compression obtains.
The invention allows for a kind of decompressing device of the image with transparency, in order to implement above-mentioned with transparency
The decompression method of image.
Fig. 4 is the structured flowchart of the decompressing device of the image with transparency in the embodiment of the present invention.As shown in figure 4, this
In embodiment, the decompressing device of the image with transparency includes decompression module 410 and inverse pre-multiplied module 420.Decompression mould
Block 410 and inverse pre-multiplied module 420 are connected with each other.Wherein, decompression module 410 is used for belonging to the same image with transparency
The first opaque image of compression is decompressed respectively with the second opaque image of compression, obtains the first opaque image and second
Opaque image, the first opaque image is the r ＇ after pre-multiplied, g ＇, b ＇ triple channel image, and the second opaque image is by a passage
Image.Inverse pre-multiplied module 420 is used for the first opaque view data is carried out with the inverse operation of pre-multiplied, obtains the image with transparency
Original r, g, b triple channel, the formula of pre-multiplied is: r ＇ g ＇ b ＇=rgb*a/max (a), wherein, max (a) refers to a channel data
Maximum.
The decompressing device of the image with transparency of the present invention, can from using the present invention with the image of transparency
The original argb four-way track data with transparency image is restored in the view data that compression method compression obtains.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all spirit in the present invention and
Within principle, any modification, equivalent substitution and improvement made etc., should be included within the scope of the present invention.
Claims (6)
1. a kind of compression method of the image with transparency is it is characterised in that include:
Step one, obtains the view data of tetra- passages of original a, r, g, b of the image with transparency；
Step 2, the view data of tri- passages of r, g, b is carried out pre-multiplied with a channel image data respectively, the formula of pre-multiplied is:
R ＇ g ＇ b ＇=rgb*a/max (a), wherein, max (a) refers to the maximum of a channel data；
Step 3, the r ＇ obtaining, g ＇, b ＇ triple channel view data is saved as the first opaque image, by a passage figure after pre-multiplied
As data saves as the second opaque image, the view data formula of a passage is r=g=b=a, and r=g=b=a refers to will be described
A channel data in image with transparency is as the three-channel data of r, g, b of the described second opaque image；
Step 4, is carried out with the second opaque image to the first opaque image respectively using opaque image Lossy Compression Algorithm
Compression.
2. the compression method of the image with transparency according to claim 1 is it is characterised in that also include:
Step 5, to two images obtaining after the first opaque image and the second opaque compression of images respectively carry out storage and
Transmission, or, two images obtaining after the first opaque image and the second opaque compression of images are combined into single literary composition
Part carries out storing, transmits.
3. a kind of compressor of the image with transparency is it is characterised in that include acquisition module, the pre-multiplied mould being sequentially connected
Block, preserving module and compression module, wherein:
Acquisition module, for obtaining the view data of tetra- passages of original a, r, g, b of the image with transparency；
Pre-multiplied module, for the view data of tri- passages of r, g, b is carried out pre-multiplied with a channel image data respectively, pre-multiplied
Formula is: r ＇ g ＇ b ＇=rgb*a/max (a), wherein, max (a) refers to the maximum of a channel data；
The r ＇ obtaining after pre-multiplied, g ＇, b ＇ triple channel view data are saved as the first opaque figure for obtaining by preserving module
Picture, a channel image data is saved as the second opaque image, the view data formula of a passage is r=g=b=a, r=g=
B=a refers to a channel data in the described image with transparency is three-channel as r, g, b of the described second opaque image
Data；
Compression module, impermeable with second to the first opaque image respectively using opaque image Lossy Compression Algorithm for obtaining
Bright image is compressed.
4. the compressor of the image with transparency according to claim 3 is it is characterised in that also include:
Transport module, for carrying out respectively to two images obtaining after the first opaque image and the second opaque compression of images
Storage and transmitting, or, two images obtaining after the first opaque image and the second opaque compression of images are combined into
Single file carries out storing, transmits.
5. a kind of decompression method of the image with transparency is it is characterised in that include:
Step one, is divided with the second opaque image of compression to the first opaque image of compression belonging to the same image with transparency
Do not decompressed, obtained the first opaque image and the second opaque image, a, r, g, b are the original image with transparency
Original four passages view data, the view data of tri- passages of r, g, b is carried out respectively pre- with a channel image data
Take advantage of, the formula of pre-multiplied is: r ＇ g ＇ b ＇=rgb*a/max (a), wherein, max (a) refers to the maximum of a channel data；Described first
Opaque image be pre-multiplied after obtain r ＇, g ＇, b ＇ triple channel view data, a channel image data is saved as second impermeable
Bright image, the view data formula of a passage is r=g=b=a, and r=g=b=a refers to a in the described image with transparency
Channel data is as the three-channel data of r, g, b of the described second opaque image；
Step 2, carries out the inverse operation of pre-multiplied to the first opaque view data, obtain the image with transparency original r,
G, b triple channel, the formula of pre-multiplied is: r ＇ g ＇ b ＇=rgb*a/max (a), wherein, max (a) refers to the maximum of a channel data.
6. a kind of decompressing device of the image with transparency is it is characterised in that include:
Decompression module, for impermeable with the second compression to the first opaque image of compression belonging to the same image with transparency
Bright image is decompressed respectively, obtains the first opaque image and the second opaque image；
A, r, g, b are the view data of original four passages of the original image with transparency, by the figure of tri- passages of r, g, b
As data carries out pre-multiplied with a channel image data respectively, the formula of pre-multiplied is: r ＇ g ＇ b ＇=rgb*a/max (a), wherein, max
A () refers to the maximum of a channel data；Described first opaque image be pre-multiplied after obtain r ＇, g ＇, b ＇ triple channel picture number
According to a channel image data being saved as the second opaque image, the view data formula of a passage is r=g=b=a, r=g=
B=a refers to a channel data in the described image with transparency is three-channel as r, g, b of the described second opaque image
Data；
Inverse pre-multiplied module, for the first opaque view data is carried out with the inverse operation of pre-multiplied, obtains the image with transparency
Original r, g, b triple channel, the formula of pre-multiplied is: r ＇ g ＇ b ＇=rgb*a/max (a), wherein, max (a) refers to a channel data
Maximum.
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| US9621765B2 (en) * | 2015-07-06 | 2017-04-11 | Konica Minolta Laboratory U.S.A., Inc. | Method for supporting color conversion on premultiplied data |
| CN105938625B (en) * | 2016-03-18 | 2018-10-12 | 浙江万朋教育科技股份有限公司 | A method of alpha channel datas in processing PNG picture formats |
| CN109348141A (en) * | 2018-10-31 | 2019-02-15 | 北京达佳互联信息技术有限公司 | Video generation, video broadcasting method, device, electronic equipment and storage medium |
| CN110062238B (en) * | 2019-04-02 | 2020-09-11 | 上海工程技术大学 | Encoding and decoding method for four-component video |
| CN115550661B (en) * | 2022-11-25 | 2023-03-24 | 统信软件技术有限公司 | Image compression method, restoration method, computing device and readable storage medium |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102036059A (en) * | 2009-09-25 | 2011-04-27 | 腾讯科技（深圳）有限公司 | Method, device and system for compressing and decompressing transparent images |
| CN102103463A (en) * | 2011-02-17 | 2011-06-22 | 杭州华三通信技术有限公司 | Processing method and equipment of user interface information with transparency |
| CN102289829A (en) * | 2011-07-12 | 2011-12-21 | 北京朗玛数联科技有限公司 | Method and device for storing and restoring image and system for processing image |
| US20120120085A1 (en) * | 2010-11-15 | 2012-05-17 | Cisco Technology, Inc. | System and method for providing enhanced graphics in a video environment |
| CN102821279A (en) * | 2012-07-31 | 2012-12-12 | 北京天神互动科技有限公司 | Picture compression method keeping with alpha channel |
-
2013
- 2013-09-27 CN CN201310450213.XA patent/CN103533352B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102036059A (en) * | 2009-09-25 | 2011-04-27 | 腾讯科技（深圳）有限公司 | Method, device and system for compressing and decompressing transparent images |
| US20120120085A1 (en) * | 2010-11-15 | 2012-05-17 | Cisco Technology, Inc. | System and method for providing enhanced graphics in a video environment |
| CN102103463A (en) * | 2011-02-17 | 2011-06-22 | 杭州华三通信技术有限公司 | Processing method and equipment of user interface information with transparency |
| CN102289829A (en) * | 2011-07-12 | 2011-12-21 | 北京朗玛数联科技有限公司 | Method and device for storing and restoring image and system for processing image |
| CN102821279A (en) * | 2012-07-31 | 2012-12-12 | 北京天神互动科技有限公司 | Picture compression method keeping with alpha channel |
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