CN103686182B - The coded method of a kind of displaying information on screen and coding system - Google Patents
The coded method of a kind of displaying information on screen and coding system Download PDFInfo
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- CN103686182B CN103686182B CN201310684334.0A CN201310684334A CN103686182B CN 103686182 B CN103686182 B CN 103686182B CN 201310684334 A CN201310684334 A CN 201310684334A CN 103686182 B CN103686182 B CN 103686182B
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Abstract
The invention discloses coded method and the coding system of a kind of displaying information on screen, described method includes: gathers each pixel of original pattern display information to be encoded and obtains original pixel value, obtaining screen message initial data；Decode after original pattern display information to be encoded is carried out lossy coding, obtain the pixel value of decoded each pixel；When the original pixel value of each pixel and the difference of decoded pixel value exceed predetermined threshold level, choosing this pixel is lossless pixel, and is rejected from screen message initial data by its pixel value, obtains the first screen message data；Being reversibly encoded behind the position of the corresponding pixel points that the pixel value of lossless pixel is placed in lossless screen message data, the first screen message data are carried out lossy coding, the numerical value that this twice coding obtains is exactly finally to encode result；The information that computer screen can be shown by the present invention carries out efficient coding so that transient copy is the most clear after the decoding.
Description
Technical field
The present invention relates to computer realm, particularly to coded method and the coding system of a kind of displaying information on screen.
Background technology
In many industries, it usually needs the information of display on current computer screen is preserved or is transferred to other setting
Standby upper, but, the information that computer screen show is the most more complicated, and resolution is high, contain much information, and therefore, how will shield
Curtain display information carries out encoding becomes the major subjects studied in the industry.
In prior art, when the information showing computer screen carries out static coding, generally use following methods:
(1) lossy coding, such as: JPEG, JPEG2000 etc.；When encoding video, encoding rate is high, to computer graphic
When shape encodes, such as word, apply the encoding rate such as window, form low so that decoded figure is unclear；
(2) lossless coding, such as: PNG；When encoding computer character, encoding rate is high, encodes photo
Time, encoding rate is low；
(3) multiple compiling method is used in mixed way, and i.e. screen is divided into some pieces (block), becomes according to block pixel change frequency
Described some pieces are classified by part and content, and use corresponding coded method to encode some pieces respectively；But, have
The boundary not can completely of a little computer graphicals and video is just belonging respectively in different blocks, or certain complete figure
Or image-region is assigned in multiple different block, owing to using different encryption algorithms, then the aobvious of corresponding blocks will be made
Show that region or its border are caused visual unclear after the decoding.
Summary of the invention
The invention provides coded method and the coding system of a kind of displaying information on screen, with what computer screen was shown
Information carries out efficient coding so that after the decoding, and the information that computer screen shows is the most clear.
The present invention provides the coded method of a kind of displaying information on screen, described method to include:
Determine original pattern display information to be encoded, gather each pixel of described original pattern display information to be encoded
Point, and obtain the original pixel value of described each pixel, obtain screen message initial data；
Decode after described original pattern display information to be encoded is carried out lossy coding, obtain decoded each pixel
Pixel value；
To each pixel, when the original pixel value of this pixel and the difference of decoded pixel value exceed default door
During threshold value, this pixel is chosen for lossless pixel, and by former from described screen message for the pixel value of described lossless pixel
Beginning data are rejected, obtains the first screen message data；
The pixel value of described lossless pixel is placed in the position of the corresponding pixel points of lossless screen message data, wherein,
Described lossless screen message data and described screen message initial data have the pixel quantity of same size；
Described first screen message data are carried out lossy coding, obtains lossy coding numerical value, described lossless screen is believed
Breath data are reversibly encoded, and obtain lossless coding numerical value, described lossy coding numerical value and described lossless coding numerical value obtain
The coding result of described original pattern display information to be encoded.
Preferably, described method farther includes: to described first screen message data, by the position of disallowable pixel
Corresponding pixel value carries out interpolation amendment according to pixel value about, obtains the second screen message data；
Described first screen message data are replaced by described second screen message data.
Preferably, the initial value of described lossless screen message data is invalid value.
Preferably, described method farther includes: described coding result be decoded so that described original pattern shows
Information reverting.
Preferably, described described coding result is decoded so that described original pattern display information reverting includes:
Carry out damaging decoding by described lossy coding numerical value, obtain decoded first screen message data；
Described lossless coding numerical value is carried out losslessly encoding, obtains decoded lossless screen message data；
For described decoded lossless screen message data, when the pixel value of pixel is not invalid value, by this picture
The pixel value of vegetarian refreshments is inserted into the position of described decoded first screen message data corresponding pixel points so that described original screen
Curtain display information reverting.
The present invention also provides for the coding system of a kind of displaying information on screen, and described system includes:
Collecting unit, for determining original pattern display information to be encoded, gathers described original pattern to be encoded and shows
Show each pixel of information, and obtain the original pixel value of described each pixel, obtain screen message initial data；
First processing unit, decodes after described original pattern display information to be encoded is carried out lossy coding,
Pixel value to decoded each pixel；
Second processing unit, for each pixel, when original pixel value and the decoded pixel of this pixel
When the difference of value exceedes predetermined threshold level, this pixel is chosen for lossless pixel, and by the pixel of described lossless pixel
Value is rejected from described screen message initial data, obtains the first screen message data；
3rd processing unit, for being placed in the correspondence picture of lossless screen message data by the pixel value of described lossless pixel
The position of vegetarian refreshments, wherein, described lossless screen message data and described screen message initial data have the pixel of same size
Point quantity；
Coding unit, for described first screen message data are carried out lossy coding, obtains lossy coding numerical value, by institute
State lossless screen message data to be reversibly encoded, obtain lossless coding numerical value, by described lossy coding numerical value and described lossless
Encoding value obtains the coding result of described original pattern display information to be encoded.
Preferably, described system farther includes: interpolating unit, for described first screen message data, will be picked
The pixel value corresponding except the position of pixel carries out interpolation amendment according to pixel value about, obtains the second screen message number
According to；And replace described first screen message data by described second screen message data.
Preferably, the initial value of described lossless screen message data is invalid value.
Preferably, described system farther includes:
Decoding unit, for being decoded described coding result so that described original pattern display information reverting.
Preferably, described decoding unit includes:
Damage decoding subelement, for carrying out damaging decoding by described lossy coding numerical value, obtain decoded first screen
Curtain information data；
Losslessly encoding subelement, for described lossless coding numerical value is carried out losslessly encoding, obtains decoded lossless screen
Curtain information data；
Merge subelement, for for described decoded lossless screen message data, when the pixel value of pixel is not
During invalid value, the pixel value of this pixel is inserted into the position of described decoded first screen message data corresponding pixel points
Put so that described original pattern display information reverting.
The embodiment of the present invention provides the benefit that: displaying information on screen is encoded in units of pixel by the present invention, gram
Take the unsharp problem of different types of block boundary caused in prior art because of divided block, by displaying information on screen
Each pixel carry out damaging and lossless identification, carry out lossy coding to damaging pixel, lossless pixel be reversibly encoded, from
And improve encoding rate, after ensureing decoding, displaying information on screen is the most clear simultaneously.
Accompanying drawing explanation
Fig. 1 is the flow chart of the coded method of a kind of displaying information on screen of one embodiment of the invention；
Fig. 2 is the structure chart of the coding system of a kind of displaying information on screen of one embodiment of the invention；
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing to embodiment party of the present invention
Formula is described in further detail.
Fig. 1 is the flow chart of the coded method of a kind of displaying information on screen of one embodiment of the invention；As it is shown in figure 1, institute
The method of stating includes:
S110, determine original pattern to be encoded display information, gather described original pattern display information to be encoded
Each pixel, and obtain the original pixel value of described each pixel, obtain screen message initial data；
S120, described original pattern display information to be encoded is carried out lossy coding after decode, obtain decoded respectively
The pixel value of pixel；Here the conventional lossy coding method such as jpeg, jpeg2000 can be used to encode；
S130, to each pixel, when the original pixel value of this pixel and the difference of decoded pixel value exceed
During predetermined threshold level, this pixel is chosen for lossless pixel, and by the pixel value of described lossless pixel from described screen
Information raw data is rejected, obtains the first screen message data；Here threshold value determine next code encoding rate and
Coding quality, user can be according to actual demand predetermined threshold level, and threshold value is the highest, and the lossless pixel chosen is the fewest, right
For original pattern display information, more level off to lossy coding；Threshold value is the lowest, and the lossless pixel chosen is the most, to original
For displaying information on screen, more level off to lossless coding；
After the pixel value of lossless pixel is rejected from described screen message initial data, due to disallowable pixel
The frequency of position is the highest, after the pixel value that the position of disallowable pixel is corresponding becomes blank, can affect code efficiency, because of
This, described method farther includes: to described first screen message data, by pixel value corresponding for the position of disallowable pixel
Carry out interpolation amendment according to pixel value about, obtain the second screen message data；Replace by described second screen message data
Change described first screen message data.
Circulation above-mentioned steps, until all of pixel performs step S140 after being all disposed；
S140, the pixel value of described lossless pixel is placed in the position of the corresponding pixel points of lossless screen message data,
Wherein, described lossless screen message data and described screen message initial data have the pixel quantity of same size；
S150, described first screen message data are carried out lossy coding, obtain lossy coding numerical value, by described lossless screen
Curtain information data is reversibly encoded, and obtains lossless coding numerical value, by described lossy coding numerical value and described lossless coding numerical value
Obtain the coding result of described original pattern display information to be encoded.
In one embodiment of the invention, the initial value of described lossless screen message data is set to invalid value, to carry
The encoding rate of high described lossless screen message data, and letter decoding process.
In one embodiment of the invention, described method farther includes:
S160, described coding result is decoded so that described original pattern display information reverting；Specifically include:
S161, carry out damaging decoding by described lossy coding numerical value, obtain decoded first screen message data；
S162, described lossless coding numerical value is carried out losslessly encoding, obtain decoded lossless screen message data；
S163, for described decoded lossless screen message data, when the pixel value of pixel is not invalid value, will
The pixel value of this pixel is inserted into the position of described decoded first screen message data corresponding pixel points so that described former
Beginning displaying information on screen reduces.
Fig. 2 is the structure chart of the coding system of a kind of displaying information on screen of one embodiment of the invention；Described system 200 is wrapped
Include:
Collecting unit 210, for determining original pattern display information to be encoded, gathers described original pattern to be encoded
Each pixel of display information, and obtain the original pixel value of described each pixel, obtain screen message initial data；
First processing unit 220, decodes after described original pattern display information to be encoded is carried out lossy coding,
Obtain the pixel value of decoded each pixel；
Second processing unit 230, for each pixel, when original pixel value and the decoded picture of this pixel
When the difference of element value exceedes predetermined threshold level, this pixel is chosen for lossless pixel, and by the picture of described lossless pixel
Element value is rejected from described screen message initial data, obtains the first screen message data；
3rd processing unit 240, for being placed in the right of lossless screen message data by the pixel value of described lossless pixel
Answering the position of pixel, wherein, described lossless screen message data and described screen message initial data have same size
Pixel quantity；
Coding unit 250, for described first screen message data are carried out lossy coding, obtains lossy coding numerical value,
Described lossless screen message data are reversibly encoded, obtain lossless coding numerical value, by described lossy coding numerical value and described
Lossless coding numerical value obtains the coding result of described original pattern display information to be encoded.
In one embodiment of the invention, described system processes at described second processing unit 230 and the described 3rd
Farther include between unit 240: interpolating unit, for described first screen message data, by the position of disallowable pixel
The pixel value putting correspondence carries out interpolation amendment according to pixel value about, obtains the second screen message data；And with described
Two screen message data replace described first screen message data.
In one embodiment of the invention, the initial value of described lossless screen message data is invalid value, to improve
State the encoding rate of lossless screen message data, and letter decoding process.
In one embodiment of the invention, described system farther includes:
Decoding unit 260, for being decoded described coding result so that described original pattern display information reverting；
Specifically include:
Damage decoding subelement 261, for carrying out damaging decoding by described lossy coding numerical value, obtain decoded first
Screen message data；
Losslessly encoding subelement 262, for described lossless coding numerical value is carried out losslessly encoding, obtains decoded lossless
Screen message data；
Merge subelement 263, for for described decoded lossless screen message data, when the pixel value of pixel
When being not invalid value, the pixel value of this pixel is inserted into described decoded first screen message data corresponding pixel points
Position so that described original pattern display information reverting.
The embodiment of the present invention provides the benefit that: displaying information on screen is encoded in units of pixel by the present invention, gram
Take the unsharp problem of different types of block boundary caused in prior art because of divided block, by displaying information on screen
Each pixel carry out damaging and lossless identification, carry out lossy coding to damaging pixel, lossless pixel be reversibly encoded, from
And improve encoding rate, after ensureing decoding, displaying information on screen is the most clear simultaneously.
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 protection scope of the present invention
In.
Claims (8)
1. the coded method of a displaying information on screen, it is characterised in that described method includes:
Determine original pattern display information to be encoded, gather each pixel of described original pattern display information to be encoded,
And obtain the original pixel value of described each pixel, obtain screen message initial data；
Decode after described original pattern display information to be encoded is carried out lossy coding, obtain the picture of decoded each pixel
Element value；
To each pixel, when the original pixel value of this pixel and the difference of decoded pixel value exceed predetermined threshold level
Time, this pixel is chosen for lossless pixel, and by the pixel value of described lossless pixel from described screen message original number
According to middle rejecting, obtain the first screen message data；
The pixel value of described lossless pixel is placed in the position of the corresponding pixel points of lossless screen message data, wherein, described
Lossless screen message data and described screen message initial data have the pixel quantity of same size；
Described first screen message data are carried out lossy coding, obtains lossy coding numerical value, by described lossless screen message number
According to being reversibly encoded, obtain lossless coding numerical value, described lossy coding numerical value and described lossless coding numerical value obtain described
The coding result of original pattern display information to be encoded；
To described first screen message data, by pixel value corresponding for the position of disallowable pixel according to pixel value about
Carry out interpolation amendment, obtain the second screen message data；
Described first screen message data are replaced by described second screen message data.
2. the method for claim 1, it is characterised in that the initial value of described lossless screen message data is invalid value.
3. method as claimed in claim 2, it is characterised in that described method farther includes:
Described coding result is decoded so that described original pattern display information reverting.
4. method as claimed in claim 3, it is characterised in that described described coding result is decoded so that described former
The reduction of beginning displaying information on screen includes:
Carry out damaging decoding by described lossy coding numerical value, obtain decoded first screen message data；
Described lossless coding numerical value is carried out losslessly encoding, obtains decoded lossless screen message data；
For described decoded lossless screen message data, when the pixel value of pixel is not invalid value, by this pixel
Pixel value be inserted into the position of described decoded first screen message data corresponding pixel points so that described original pattern shows
Show information reverting.
5. the coding system of a displaying information on screen, it is characterised in that described system includes:
Collecting unit, for determining original pattern display information to be encoded, gathers described original pattern display letter to be encoded
Each pixel of breath, and obtain the original pixel value of described each pixel, obtain screen message initial data；
First processing unit, decodes after described original pattern display information to be encoded is carried out lossy coding, is solved
The pixel value of each pixel after Ma；
Second processing unit, for each pixel, when the original pixel value of this pixel and decoded pixel value
When difference exceedes predetermined threshold level, this pixel is chosen for lossless pixel, and by the pixel value of described lossless pixel from
Described screen message initial data is rejected, obtains the first screen message data；
3rd processing unit, for being placed in the corresponding pixel points of lossless screen message data by the pixel value of described lossless pixel
Position, wherein, described lossless screen message data and described screen message initial data have the pixel number of same size
Amount；
Coding unit, for described first screen message data are carried out lossy coding, obtains lossy coding numerical value, by described nothing
Damage screen message data to be reversibly encoded, obtain lossless coding numerical value, by described lossy coding numerical value and described lossless coding
Numerical value obtains the coding result of described original pattern display information to be encoded；
Described system farther includes:
Interpolating unit, for described first screen message data, by pixel value corresponding for the position of disallowable pixel according to
Pixel value about carries out interpolation amendment, obtains the second screen message data；And replace by described second screen message data
Described first screen message data.
6. system as claimed in claim 5, it is characterised in that the initial value of described lossless screen message data is invalid value.
7. system as claimed in claim 6, it is characterised in that described system farther includes:
Decoding unit, for being decoded described coding result so that described original pattern display information reverting.
8. system as claimed in claim 7, it is characterised in that described decoding unit includes:
Damage decoding subelement, for carrying out damaging decoding by described lossy coding numerical value, obtain decoded first screen letter
Breath data；
Losslessly encoding subelement, for described lossless coding numerical value is carried out losslessly encoding, obtains decoded lossless screen letter
Breath data；
Merge subelement, for for described decoded lossless screen message data, when the pixel value of pixel is not invalid
During value, the pixel value of this pixel is inserted into the position of described decoded first screen message data corresponding pixel points, makes
Obtain described original pattern display information reverting.
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| CN105635791B (en) * | 2015-12-30 | 2019-03-12 | 北京奇艺世纪科技有限公司 | A kind of detection method and device of fuzzy video image |
| CN106604032B (en) * | 2016-11-29 | 2020-02-04 | 西安万像电子科技有限公司 | Method and device for compressing Chinese character blocks in image and method and device for compressing image |
| CN111225210B (en) * | 2018-11-26 | 2022-04-01 | 深圳市炜博科技有限公司 | Video coding method, video coding device and terminal equipment |
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| CA2433455A1 (en) * | 2001-11-29 | 2003-06-05 | Matsushita Electric Industrial Co., Ltd. | Coding distortion removal method, video encoding method, video decoding method, and apparatus and program for the same |
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Effective date of registration: 20170303 Address after: Guangdong city of Shenzhen province Baoan District Xixiang Biwan Biwan road building room 910 Patentee after: Shenzhen small fish Technology Co., Ltd. Address before: American Texas Patentee before: Hong Xuerong |