CN103544931A - Character generating method and device and application terminal - Google Patents
Character generating method and device and application terminal Download PDFInfo
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- CN103544931A CN103544931A CN201310477450.5A CN201310477450A CN103544931A CN 103544931 A CN103544931 A CN 103544931A CN 201310477450 A CN201310477450 A CN 201310477450A CN 103544931 A CN103544931 A CN 103544931A
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- 238000000034 method Methods 0.000 title claims abstract description 31
- 230000004075 alteration Effects 0.000 claims abstract description 41
- 230000035699 permeability Effects 0.000 claims description 21
- 230000009021 linear effect Effects 0.000 claims description 15
- 230000004048 modification Effects 0.000 claims description 11
- 238000012986 modification Methods 0.000 claims description 11
- 230000000694 effects Effects 0.000 abstract description 18
- 230000007704 transition Effects 0.000 abstract description 6
- 230000001172 regenerating effect Effects 0.000 abstract 1
- 238000009877 rendering Methods 0.000 description 8
- 230000006870 function Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 230000000007 visual effect Effects 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000009022 nonlinear effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
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Abstract
The invention is applicable to the field of system characters and provides a character generating method and device and an application terminal. The character generating method includes calling a bitmap of a currently displayed character when a chromatic aberration of a foreground color and a background color of the currently displayed character is smaller than a preset upper aberration limit value or the size of the currently displayed character is larger than a preset lower character size limit value, rectifying a gray value of the bitmap so as to subject character edges to nonlinear transition, subjecting the rectified bitmap to regenerating characters, storing and displaying the characters. By the aid of the character generating method and device, transition speed of the character edges can be increased, character acutance is improved, and the character generating method and device can be applicable to the environment of application programs and achieve better display effect.
Description
Technical field
The invention belongs to system literal field, relate in particular to a kind of generation method, device and application terminal of word.
Background technology
Android system literal display effect under varying environment has larger difference, and its readability depends on the factors such as hardware, software, word size, rendering intent, text color, background color.But current Android system literal shows, can only use same style, once revise, to the application program of all use system literals, all can exert an influence.Therefore for example text color and background color contrast are when little under some environment for the word in existing Android system, and word seems relatively to require great effort, and display effect is poor.
Summary of the invention
The object of the embodiment of the present invention is to provide a kind of generation method of word, and the word that is intended to solve in Android system seems relatively to require great effort under some environment, the problem that display effect is poor.
The embodiment of the present invention is achieved in that a kind of generation method of word, and described method comprises:
When the size that is less than an aberration higher limit setting in advance or current display text at the foreground of current display text and the aberration of background colour is greater than the font size lower limit setting in advance, call the bitmap of current display text, the gray-scale value of revising bitmap is non-linear excessive so that word edge is carried out;
Amended bitmap is regenerated to word to be stored and shows.
The embodiment of the present invention also provides a kind of generating apparatus of word, and described device comprises:
Non-linear excessive unit, while surpassing for be less than the size of an aberration higher limit setting in advance or current display text at the foreground of current display text and the aberration of background colour the font size lower limit setting in advance, call the bitmap of current display text, the gray-scale value of revising bitmap is non-linear excessive so that word edge is carried out;
Word generation unit, stores and shows for amended bitmap is regenerated to word.
The embodiment of the present invention also provides a kind of application terminal, and described application terminal comprises described device.
The embodiment of the present invention compared with prior art, beneficial effect is: the gray-scale value by modification bitmap is non-linear excessive so that word edge is carried out, amended bitmap is regenerated to word to be stored and shows, can increase the transition speed at word edge, improve the acutance of word, the environment that can adapt to application program, reaches good display effect.
Accompanying drawing explanation
Fig. 1 is the process flow diagram of the generation method of the word that provides of the embodiment of the present invention;
Fig. 2 is an effect contrast figure of the application scenarios example that provides of the embodiment of the present invention;
Fig. 3 is the enlarged drawing of the part of Fig. 2 of providing of the embodiment of the present invention;
Fig. 4 is another effect contrast figure of the application scenarios example that provides of the embodiment of the present invention;
Fig. 5 is the module frame chart of the generating apparatus of the word that provides of the embodiment of the present invention.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
The embodiment that the embodiment of the present invention provides is as follows:
Refer to Fig. 1, the embodiment of the present invention provides a kind of generation method of word, and described method comprises:
Step S101, when the size that is less than an aberration higher limit setting in advance or current display text at the foreground of current display text and the aberration of background colour is greater than the font size lower limit setting in advance, call the bitmap of current display text, the gray-scale value of revising bitmap is non-linear excessive so that word edge is carried out.
In embodiments of the present invention, in step S101, also comprise: when the size of the aberration higher limit setting in advance described in the foreground of current display text and the aberration of background colour are not less than or current display text is less than the font size lower limit setting in advance, the current display text of default system, does not deal with.
In one embodiment of the invention, the step of the gray-scale value of this modification bitmap comprises:
Gray-scale value x in bitmap is revised as to x and is multiplied by more than one permeability coefficient y;
Described permeability coefficient y=mx, wherein m ∈ [0,1].
In one embodiment of the invention, when the size that is less than an aberration higher limit setting in advance and is greater than an aberration higher limit setting in advance or described current display text at the foreground of described current display text and the aberration of background colour is greater than the font size lower limit setting in advance and is less than a font size higher limit setting in advance, describedly gray-scale value x in bitmap is revised as to step that x is multiplied by more than one permeability coefficient y is specially and the gray-scale value x in bitmap is revised as to x is multiplied by a permeability coefficient y.
In one embodiment of the invention, when the size that is less than an aberration lower limit setting in advance or described current display text at the foreground of described current display text and the aberration of background colour is greater than the font size higher limit setting in advance, describedly gray-scale value x in bitmap is revised as to step that x is multiplied by more than one permeability coefficient y is specially and the gray-scale value x in bitmap is revised as to x is multiplied by two permeability coefficient y.
In a preferred embodiment of the invention, the preferred value of described m is 1/255.
In one embodiment of the invention, revise the gray-scale value of bitmap and just can obtain good visual effect under certain scene, such as word is larger, prospect background aberration is different little etc.Word compared with circlet border under, the effect of processing is not on the contrary not as processing, but concrete what environment, Android system self is to be difficult to judgement, application program is under what scene, application program self is very clearly, so the method that the embodiment of the present invention adopts is which type of word rendering intent is application program initiatively apply for needing according to current scene.
In one embodiment of the invention, further comprising the steps of before step S101:
Application program judges the foreground of current display text and the aberration magnitude range of background colour;
Application program judges the magnitude range of current display text.
By judgement aberration size and word magnitude range, decide the gray-scale value that only has the just needs that meet step S101 condition to revise bitmap, do not satisfy condition without the gray-scale value of revising bitmap, thereby the varying environment in adaptive system, is issued to good display effect at different environment.
In embodiments of the present invention, the step of the bitmap that calls current display text in step S101 can be specially: after the interface function of application call Skia generating character, get the bitmap of word by calling FreeType function.
Step S102, regenerates word by amended bitmap and stores and show.
The embodiment of the present invention is non-linear excessive so that word edge is carried out by the gray-scale value of modification bitmap, amended bitmap is regenerated to word to be stored and shows, can increase the transition speed at word edge, improve the acutance of word, the environment that can adapt to application program, reaches good display effect.
Application scenarios example:
The technical scheme that the embodiment of the present invention provides can be applicable in Android system, word product process in Android system under acquiescence completes by increase income storehouse Skia and FreeType co-operate, FreeType can load for example * .TTF file of literal pool, generates vector character bitmap.Under Android system default, by FreeType, play up the word of generation, edge has from completely transparent in not saturating gradual change, and this is excessively linear.
The method that Skia provides according to the embodiment of the present invention bitmap by interface function is processed, and sends into video memory and shows, the linearity at word edge excessively can be revised as non-linear excessively, thereby increase the excessive speed in edge, improve the acutance of word.
In the bitmap that word edge transitional effect generates at FreeType, with gray-scale value, embody.Gray-scale value is multiplied by a permeability coefficient, just can reaches the effect of nonlinearities change.For example:
Quafric curve is played up: x=x* (x/255)
Cubic curve is played up: x=x* (x/255) * (x/255)
At Skia, load after FreeType bitmap, internal storage data is carried out to above operation, just can reach the nonlinearities change of n curve and then the effect of raising acutance.
But the visual effect that the lifting of this acutance need to just can obtain under certain scene, such as word is larger, prospect background aberration is different little etc.Word compared with circlet border under, the effect of processing is not on the contrary not as processing, but concrete what environment, Android system self is to be difficult to judgement, application program is under what scene, application program self is very clearly, so the method that the embodiment of the present invention adopts is which type of word rendering intent application initiatively applies for needing according to current scene.
Can when Android system starts, create a system property variable render_mode, be used for representing word rendering intent, by different values, represent different rendering intents: the rendering intent such as 0 representative system acquiescence, does not namely process; 1 represents that quafric curve plays up; 2 represent that cubic curve plays up.Certainly these methods can be other algorithms, are not limited to above enumerating.Default value is 0.
When being applied in need to change word time, write corresponding value to attribute variable render_mode, application system provides different word rendering intents.Such as, foreground and background colour that current word shows are very approaching, and render_mode is set to 2, adopts cubic curve to play up, can larger raising word acutance, word is seen more clearly; Or when current page word size is medium, render_mode is set to 1, can to a certain degree improve word acutance; When current page word is very little, render_mode is set to 0, adopts system default setting not process.In the different scenes of same application, also can switch character displaying method.Such as from a very little scene of foreground background colour difference, be switched to while differing greatly scene, render_mode can be set to 1 by 2, the algorithm less by sharpening degree carries out word generation.
After the interface function of application call Skia generating character, can call the bitmap that FreeType function gets word, at this moment the value of render_mode is judged, according to the different rendering intents of the different employing of value, internal storage data is carried out to corresponding processing.Such as render_mode value is 1 o'clock, x=x* (x/255), after being disposed, is reduced to 0 by render_mode value, and Skia can show the character bitmap generating character after processing afterwards.When next word generates, can read render_mode value equally.If 0, can not process.So,, after current scene word generates, can not have influence on the word of other scenes or application.
The design sketch of its application is as Fig. 2, Fig. 3 and Fig. 4, and Fig. 2 is the effect contrast figure that linearity, quafric curve play up, cubic curve play up of word when larger; Fig. 3 is the part enlarged drawing of Fig. 2, and along with the rising of curve order, the acutance at word edge is more obvious as seen, and it is more clear to show.Fig. 4 is the word effect contrast figure that linearity, quafric curve are played up, cubic curve is played up hour, in the situation that word is less, it is full that the non-linear effect of playing up rear actual displayed is not so good as the linear word of playing up on the contrary, and incompleteness has even appearred in some stroke after cubic curve is played up.Therefore, judge the aberration size of the foreground of current display text and background colour, the size of current display text, meet the gray-scale value of the just modification bitmap of certain condition, word edge is carried out to non-linear transition.
Refer to Fig. 5, the embodiment of the present invention also provides a kind of generating apparatus of word, and described device comprises:
Non-linear excessive unit 501, while surpassing for be less than the size of an aberration higher limit setting in advance or current display text at the foreground of current display text and the aberration of background colour the font size lower limit setting in advance, call the bitmap of current display text, the gray-scale value of revising bitmap is non-linear excessive so that word edge is carried out.
In one embodiment of the invention, this non-linear excessive unit comprises:
Revise bitmap gray-scale value module, for the gray-scale value x of bitmap is revised as to x, be multiplied by more than one permeability coefficient y;
Described permeability coefficient y=mx, wherein m ∈ [0,1].
In one embodiment of the invention, described modification bitmap gray-scale value module, when the size that is less than an aberration higher limit setting in advance and is greater than an aberration higher limit setting in advance or described current display text specifically for the aberration of the foreground at described current display text and background colour is greater than the font size lower limit setting in advance and is less than a font size higher limit setting in advance, the gray-scale value x in bitmap is revised as to x and is multiplied by a permeability coefficient y.
In one embodiment of the invention, described modification bitmap gray-scale value module, when the size that is less than an aberration lower limit setting in advance or described current display text specifically for the aberration of the foreground at described current display text and background colour is greater than the font size higher limit setting in advance, the gray-scale value x in bitmap is revised as to x and is multiplied by two permeability coefficient y.
Detail schema in device is described in preceding method, does not repeat them here.
The embodiment of the present invention also provides a kind of application terminal, and described application terminal comprises above-mentioned device.
This application terminal is specially the application terminal that Android system is housed, as mobile phone, computer, notebook, televisor of Android system etc. are housed.Said apparatus is particularly useful for being contained in the equipment that screen PPI is less, such as intelligent TV set, can adapt to the environment of application program, reaches good display effect.
Generation method, device and the application terminal of word of the present invention, gray-scale value by modification bitmap is non-linear excessive so that word edge is carried out, amended bitmap is regenerated to word to be stored and shows, can increase the transition speed at word edge, improve the acutance of word, the environment that can adapt to application program, reaches good display effect.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any modifications of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. a generation method for word, is characterized in that, described method comprises:
When the size that is less than an aberration higher limit setting in advance or current display text at the foreground of current display text and the aberration of background colour is greater than the font size lower limit setting in advance, call the bitmap of current display text, the gray-scale value of revising bitmap is non-linear excessive so that word edge is carried out;
Amended bitmap is regenerated to word to be stored and shows.
2. the method for claim 1, is characterized in that, the step of the gray-scale value of described modification bitmap comprises:
Gray-scale value x in bitmap is revised as to x and is multiplied by more than one permeability coefficient y;
Described permeability coefficient y=mx, wherein m ∈ [0,1].
3. method as claimed in claim 2, it is characterized in that, when the size that is less than an aberration higher limit setting in advance and is greater than an aberration higher limit setting in advance or described current display text at the foreground of described current display text and the aberration of background colour is greater than the font size lower limit setting in advance and is less than a font size higher limit setting in advance, describedly gray-scale value x in bitmap is revised as to step that x is multiplied by more than one permeability coefficient y is specially and the gray-scale value x in bitmap is revised as to x is multiplied by a permeability coefficient y.
4. method as claimed in claim 2, it is characterized in that, when the size that is less than an aberration lower limit setting in advance or described current display text at the foreground of described current display text and the aberration of background colour is greater than the font size higher limit setting in advance, describedly gray-scale value x in bitmap is revised as to step that x is multiplied by more than one permeability coefficient y is specially and the gray-scale value x in bitmap is revised as to x is multiplied by two permeability coefficient y.
5. the method as described in claim 2 or 3 or 4, is characterized in that, described m is specially 1/255.
6. a generating apparatus for word, is characterized in that, described device comprises:
Non-linear excessive unit, while surpassing for be less than the size of an aberration higher limit setting in advance or current display text at the foreground of current display text and the aberration of background colour the font size lower limit setting in advance, call the bitmap of current display text, the gray-scale value of revising bitmap is non-linear excessive so that word edge is carried out;
Word generation unit, stores and shows for amended bitmap is regenerated to word.
7. device as claimed in claim 6, is characterized in that, described non-linear excessive unit comprises:
Revise bitmap gray-scale value module, for the gray-scale value x of bitmap is revised as to x, be multiplied by more than one permeability coefficient y;
Described permeability coefficient y=mx, wherein m ∈ [0,1].
8. device as claimed in claim 7, it is characterized in that, described modification bitmap gray-scale value module, when the size that is less than an aberration higher limit setting in advance and is greater than an aberration higher limit setting in advance or described current display text specifically for the aberration of the foreground at described current display text and background colour is greater than the font size lower limit setting in advance and is less than a font size higher limit setting in advance, the gray-scale value x in bitmap is revised as to x and is multiplied by a permeability coefficient y.
9. device as claimed in claim 7, it is characterized in that, described modification bitmap gray-scale value module, when the size that is less than an aberration lower limit setting in advance or described current display text specifically for the aberration of the foreground at described current display text and background colour is greater than the font size higher limit setting in advance, the gray-scale value x in bitmap is revised as to x and is multiplied by two permeability coefficient y.
10. an application terminal, is characterized in that, described application terminal comprises the device described in any one in requirement 6 to 9.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310477450.5A CN103544931B (en) | 2013-10-12 | 2013-10-12 | Character generating method and device and application terminal |
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| CN201310477450.5A CN103544931B (en) | 2013-10-12 | 2013-10-12 | Character generating method and device and application terminal |
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| CN103544931A true CN103544931A (en) | 2014-01-29 |
| CN103544931B CN103544931B (en) | 2017-04-19 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105912321A (en) * | 2016-04-01 | 2016-08-31 | 乐视控股（北京）有限公司 | Word color setting method and device |
| CN111596998A (en) * | 2020-05-13 | 2020-08-28 | 青岛海信移动通信技术股份有限公司 | Page processing method of ink screen and terminal |
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| JPH03103894A (en) * | 1989-09-19 | 1991-04-30 | Fujitsu Ltd | Half tone font generating system |
| JP2004226679A (en) * | 2003-01-23 | 2004-08-12 | Fujitsu Ltd | Character display method and system |
| US20060050974A1 (en) * | 2004-09-08 | 2006-03-09 | Canon Kabushiki Kaisha | Image encoding apparatus and method, computer program, and computer-readable storage medium |
| CN1812475A (en) * | 2006-01-06 | 2006-08-02 | 友达光电股份有限公司 | Image sharpening method and apparatus |
| CN1910615A (en) * | 2004-01-09 | 2007-02-07 | 波音公司 | System and methods for comparing images with different contrast levels |
-
2013
- 2013-10-12 CN CN201310477450.5A patent/CN103544931B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03103894A (en) * | 1989-09-19 | 1991-04-30 | Fujitsu Ltd | Half tone font generating system |
| JP2004226679A (en) * | 2003-01-23 | 2004-08-12 | Fujitsu Ltd | Character display method and system |
| CN1910615A (en) * | 2004-01-09 | 2007-02-07 | 波音公司 | System and methods for comparing images with different contrast levels |
| US20060050974A1 (en) * | 2004-09-08 | 2006-03-09 | Canon Kabushiki Kaisha | Image encoding apparatus and method, computer program, and computer-readable storage medium |
| CN1812475A (en) * | 2006-01-06 | 2006-08-02 | 友达光电股份有限公司 | Image sharpening method and apparatus |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105912321A (en) * | 2016-04-01 | 2016-08-31 | 乐视控股（北京）有限公司 | Word color setting method and device |
| CN111596998A (en) * | 2020-05-13 | 2020-08-28 | 青岛海信移动通信技术股份有限公司 | Page processing method of ink screen and terminal |
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| CN103544931B (en) | 2017-04-19 |
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