CN100545901C - The method of improving display effect of display screen on mobile device - Google Patents
The method of improving display effect of display screen on mobile device Download PDFInfo
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- CN100545901C CN100545901C CNB2006100298393A CN200610029839A CN100545901C CN 100545901 C CN100545901 C CN 100545901C CN B2006100298393 A CNB2006100298393 A CN B2006100298393A CN 200610029839 A CN200610029839 A CN 200610029839A CN 100545901 C CN100545901 C CN 100545901C
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Abstract
The present invention relates to a kind of method of improving display effect of display screen on mobile device, comprising judging whether that according to preset condition needs improve the processing of display screen display effect, then system obtains display screen raw display data block message, described raw display data block message is carried out gradation conversion handles and to obtain gray level image information, described gray level image information is carried out the binary conversion treatment operation obtain black and white binary image information, carry out the display process operation on display screen if desired.Adopt the method for this kind improving display effect of display screen on mobile device, significantly improved display effect, make things convenient for the user to select best display effect as required, flexible and convenient to use, system performance is reliable and stable, image transitions accuracy rate height, the scope of application is comparatively extensive, provide pseudo-classic display packing to mobile device, the function of two-value white and black displays screen is provided on color screen, brought great convenience for people's live and work.
Description
Technical field
The present invention relates to field of mobile equipment, particularly mobile device strengthens the display technique field, specifically is meant a kind of method of improving display effect of display screen on mobile device.
Background technology
As everyone knows, numerous mobile device that appears as of color screen provides abundanter manifestation mode and expression means, particularly color screen is applied in the mobile phone, it provides the foundation for the propagation of multimedia messages, expanded the usable range of mobile phone greatly, comprise multimedia messages (MMS, Multi-media Message Service), embedded camera etc. all have been integrated in the mobile phone rapidly, have made the application of mobile phone stride into a new field.Simultaneously, the user finds in the use of colour screen handset, in extraneous environment with dark light, by the multimedia messages in the light demonstration mobile phone of colour screen handset self LCD, effect is fine during such as picture, can see the gorgeous all kinds of colors in the picture, but under high light, handle affairs outside at sunny noon such as the user, open colour screen handset and prepare to search the contact person when calling, because under the contrast of strong ambient light,, all can't see clearly for the various operation literal among the mobile phone LCD exactly much less see picture in the mobile phone clearly.What usually see is a slice white or grey, can't operate normally.And at present colour screen handset provides the method for improving this situation is only regulated screen in setting backlight illumination and color contrast, find that by test these regulating actions all are very little under high light, can't obviously improve display effect, simultaneously in other various color screen mobile devices, also there is similar problem, because color screen shows as the not high color of background or other and literal color contrast because the effect of considering picture often changes to the background of literal with picture when the Presentation Function operation interface, causing the literal color of prospect under high light and contrast that backcolor is subjected to high light to be disturbed can't allow the user distinguish clearly, particularly influence is very big when carrying out similar retrieval telephone number or carry out operation such as copy editor, so just make color screen the form of enriching that can show and the effect of content have a greatly reduced quality, influenced people's normal use.
Summary of the invention
The objective of the invention is to have overcome above-mentioned shortcoming of the prior art, provide a kind of and can at any time the color screen display message be converted to as required white and black displays, improve to show contrast, flexible and convenient to use, runnability is reliable and stable, the scope of application method of improving display effect of display screen on mobile device comparatively widely.
In order to realize above-mentioned purpose, the method for improving display effect of display screen on mobile device of the present invention is as follows:
The method of this improving display effect of display screen on mobile device, its principal feature are that described method may further comprise the steps:
(1) system carries out initialization operation;
(2) system judges whether to improve the processing of display screen display effect according to preset condition;
(3), then carry out the display screen display process in a conventional manner if do not need;
(4) if desired, then system obtains display screen raw display data block message;
(5) system carries out gradation conversion processing operation to described raw display data block message, and obtains gray level image information;
(6) system carries out the binary conversion treatment operation to described gray level image information, and obtains black and white binary image information;
(7) system carries out the display process operation according to described black and white binary image information on display screen;
(8) repeat above-mentioned steps (2).
The condition of described systemic presupposition can be for manual configuration or is detected automatically.
When the condition of systemic presupposition was manual configuration, the described decision operation that whether needs to improve display screen display effect may further comprise the steps:
(1) system operates according to the user, judges the kind of set color display mode;
(2) if the result who does not need to improve display screen display effect is then returned in normal demonstration;
(3) if improve demonstration, then return the result that need improve display screen display effect.
When the condition of systemic presupposition is manual configuration, also be provided with a light activated element that is connected with inner function circuit in this mobile device, the described decision operation that whether needs to improve display screen display effect is:
(1) light activated element continues to survey the intensity of illumination in the surrounding environment;
(2) if the intensity of illumination that light activated element detected less than the threshold value of systemic presupposition, is then returned the result who does not need to improve display screen display effect;
(3) if the intensity of illumination that light activated element detected reaches or surpass the threshold value of systemic presupposition, then return the result that need improve display screen display effect.
Described gradation conversion is handled operation and be may further comprise the steps:
(1) system extracts the component of three kinds of colors, that is: one by one according to the raw display data block message in each picture element
Red---R
Green---G
Blue---B;
(2) obtain the brightness value Y of corresponding pixel point according to following formula:
Y＝0.30×R+0.59×G+0.11×B；
(3) generation one and the corresponding new bitmap of described raw display data block message, and corresponding picture element is set to have the gray scale point of brightness value Y in this bitmap, thus obtain gray level image information.
Described bitmap is 256 color bitmaps, and described gray level image information is 256 grades a gray level image.
Described binary conversion treatment operation may further comprise the steps:
(1) system generates image grey level histogram according to described gray level image information;
(2) the trough place corresponding gray between two crests in this image grey level histogram is set at the gray scale segmentation threshold;
(3) according to this gray scale segmentation threshold, the gray-scale value of each picture element in the more described one by one gray level image information;
(4) if the gray-scale value of this picture element more than or equal to described gray scale segmentation threshold, then the gray-scale value of this picture element is set to maximal value;
(5) if the gray-scale value of this picture element less than described gray scale segmentation threshold, then the gray-scale value of this picture element is set to minimum value, thereby obtains black and white binary image information.
Described gray level image information is 256 grades a gray level image, and described gray scale maximal value is 255, and minimum gray value is 0.
Described according to black and white binary image information on display screen, carry out display process operation can for:
Directly black and white binary image information is presented on the display screen;
Also can may further comprise the steps:
(1), the icon in the black and white binary image information is replaced with the black and white icon of systemic presupposition, the black and white binary image information that is enhanced according to described raw display data block message;
The black and white binary image information that (2) will strengthen is presented on the display screen.
Adopted the method for the improving display effect of display screen on mobile device of this invention, because by sensor devices or the manual mode of setting, with the every screen data presented of mobile device display screen (LCD) content as a video data block, and utilize image gray processing and binary processing method to carry out color conversion, thereby making the color screen image can be converted to black white image under high light shows, thereby improved the literal in the feature operation and the contrast of background greatly, significantly improved display effect; Simultaneously, method of the present invention has made things convenient for the user to select best display effect to carry out specific feature operation in particular environment as required, not only flexible and convenient to use, and system performance is reliable and stable, image transitions accuracy rate height, the scope of application is comparatively extensive, provide a kind of pseudo-classic display packing to mobile device simultaneously, the function of two-value white and black displays screen is provided on color screen, satisfied people some the time special requirement, bring great convenience for people's live and work.
Description of drawings
Fig. 1 is the process flow diagram of the method for improving display effect of display screen on mobile device of the present invention.
Fig. 2 is for carrying out the grey level histogram synoptic diagram in the binary conversion treatment operation in the method for improving display effect of display screen on mobile device of the present invention.
The display effect synoptic diagram of the black and white binary image information after Fig. 3 a, 3b are respectively the image information of raw display data piece and use method of the present invention to handle.
Embodiment
In order more to be expressly understood technology contents of the present invention, describe in detail especially exemplified by following examples.
See also shown in Figure 1ly, the method for this improving display effect of display screen on mobile device, its principal feature are that described method may further comprise the steps:
(1) system carries out initialization operation;
(2) system is according to preset condition, judge whether to improve the processing of display screen display effect, the condition of described systemic presupposition can be for manual configuration or is detected automatically, when the condition of systemic presupposition was manual configuration, the described decision operation that whether needs to improve display screen display effect may further comprise the steps:
(a) system operates according to the user, judges the kind of set color display mode;
(b) if the result who does not need to improve display screen display effect is then returned in normal demonstration;
(c) if improve demonstration, then return the result that need improve display screen display effect;
When the condition of systemic presupposition is manual configuration, also be provided with a light activated element that is connected with inner function circuit in this mobile device, the described decision operation that whether needs to improve display screen display effect is:
(a) light activated element continues to survey the intensity of illumination in the surrounding environment;
(b) if the intensity of illumination that light activated element detected less than the threshold value of systemic presupposition, is then returned the result who does not need to improve display screen display effect;
(c) if the intensity of illumination that light activated element detected reaches or surpass the threshold value of systemic presupposition, then return the result that need improve display screen display effect;
(3), then carry out the display screen display process in a conventional manner if do not need;
(4) if desired, then system obtains display screen raw display data block message;
(5) system carries out gradation conversion processing operation to described raw display data block message, and obtains gray level image information, and described gradation conversion is handled operation and be may further comprise the steps:
(a) system extracts the component of three kinds of colors, that is: one by one according to the raw display data block message in each picture element
Red---R
Green---G
Blue---B;
(b) obtain the brightness value Y of corresponding pixel point according to following formula:
Y＝0.30×R+0.59×G+0.11×B；
(c) generation one and the corresponding new bitmap of described raw display data block message, and corresponding picture element is set to have the gray scale point of brightness value Y in this bitmap, thereby obtain gray level image information, described bitmap is 256 color bitmaps, and described gray level image information is 256 grades a gray level image;
(6) system carries out the binary conversion treatment operation to described gray level image information, and obtains black and white binary image information, and described binary conversion treatment operation may further comprise the steps:
(a) system generates image grey level histogram according to described gray level image information;
(b) the trough place corresponding gray between two crests in this image grey level histogram is set at the gray scale segmentation threshold;
(c) according to this gray scale segmentation threshold, the gray-scale value of each picture element in the more described one by one gray level image information;
(d) if the gray-scale value of this picture element more than or equal to described gray scale segmentation threshold, then the gray-scale value of this picture element is set to maximal value, described gray scale maximal value is 255;
(e) if the gray-scale value of this picture element less than described gray scale segmentation threshold, then the gray-scale value of this picture element is set to minimum value, described minimum gray value is 0, thereby obtains black and white binary image information;
(7) system carries out display process operation according to described black and white binary image information on display screen, this handle operation can for:
Directly black and white binary image information is presented on the display screen;
Also can may further comprise the steps:
(a), the icon in the black and white binary image information is replaced with the black and white icon of systemic presupposition, the black and white binary image information that is enhanced according to described raw display data block message;
The black and white binary image information that (b) will strengthen is presented on the display screen;
(8) repeat above-mentioned steps (2).
In the middle of practical application, core concept of the present invention is the every screen data presented of LCD content to be used as a view data and to utilize image gray processing and binary processing method carries out color conversion, thereby displaying contents changes the demonstration of bianry image content, enhancing contrast ratio into the most at last.
The specific implementation process of method of the present invention is as follows:
In mobile phone is set, increasing by one and set option---the color display mode is set, and comprises two: (1) is automatic, and (2) are manual, and default value can be changed for auto color.Increase by a light activated element in the system, be used for the acquisition environment intensity of illumination, be set at the color display mode and will rely on light activated element to carry out auto color conversion when automatic according to threshold value; To adjust the color display mode by the shortcut that the user formulates according to system as required at any time and be set at when manual.
System finally all is the mechanism of passing among the LCD buffer according to each screen video data, this data block is used as a data bitmap handles as follows accordingly:
(1) sees also shown in Fig. 3 a, after system gets access to corresponding colored raw display data piece, to at first carry out the gradation conversion processing and change it into gray-scale map (GrayScale), gray-scale map is meant and only contains monochrome information, the image that does not contain color information, it is the process that the color image that contains brightness and color is transformed into gray level image that gray processing is handled, and it is the basis of follow-up binary conversion treatment that gray processing is handled, so select effective gray processing disposal route to be even more important.Because of color system in the present mobile system is 16 colour systems systems substantially, promptly 16 of color employings are represented among the RGB three, because human eye is responsive to the Green color ratio, so three kinds of colors account for 56 and 5 respectively.We just with 16 looks as handling sample, and 24 looks full-color processing procedure is similar.16 i.e. positions, territory of two bytes, acquire the value of these three color components according to the shared figure place of different system RGB, take out corresponding rgb value after, all change eight (low level mends 0) into.So take out the rgb value of a point, can adopt following algorithm to obtain the value of R, G, three components of B:
typedef?union?tagRGBDATA{
unsigned?int?rgb16；
stuct{
unsigned?B:5；///＜＜3
unsigned?G:6；//＜＜2
unsigned?R:5；//＜＜3
}Bits16；
}RGBDATA；
#define?RR16(a)((unsigned?char)((((a).Bits?16.R)＜＜3)&0xf8))
#define?RG16(a)((unsigned?char)((((a).Bits?16.G)＜＜2)&0xfc))
#define?RB16(a)((unsigned?char)((((a).Bits?16.B)＜＜3)&0xf8))
Obviously, by above-mentioned three macro definitions, try to achieve R, the G of certain point, the value of three components of B easily.By colourity and brightness transition formula: Y=0.30 * R+0.59 * G+0.11 * B, can obtain the brightness value Y of this point again.Then, when writing back 256 new color bitmaps, make R=G=B=Y, like this, just obtained one 256 grades gray level image.
(2) for prospect literal and background under high light form sharp contrast, enhancing contrast ratio must be carried out binarization processing of images after finishing the gray processing processing, be bianry image with greyscale image transitions.So-called bianry image just is meant that the gray-scale value of being had a few on the image has only two kinds of possibilities, is not that " 0 " just is " 255 ", and just entire image presents tangible black and white effect.In order to obtain desirable bianry image, the general Threshold Segmentation technology that adopts, it has cutting apart of the strong image that contrasts effective especially to literal and background, and wherein image histogram is exactly a kind of gamma characteristic, is process object with the grey level histogram so we adopt classical selection of threshold.For fairly simple image, can suppose that object is in different gray levels respectively with background, image is polluted by the zero-mean Gaussian noise, so the gray distribution of image curve approximation is thought by two normal distyribution function (μ
1, σ
1 2) and (μ
2, σ
2 2) be formed by stacking, the peak value of two separation will appear in the histogram of image, sees also shown in Figure 2ly, and wherein histogrammic horizontal axis is 256 grades of gray scale coordinates: left end is 0, and right-hand member is 255; Y direction has shown the pixel count that constitutes each tone, and line is upwards more more with regard to remarked pixel information.Through testing in a large number and discovering, the formed image in various functional performances interface all belongs to this category in the mobile device.For such image, segmentation threshold can select trough corresponding gray scale value between histogrammic two crests as segmentation threshold, has determined just can cut apart by threshold value according to the brightness Y value of each picture element behind the gray scale segmentation threshold.
(3) after the binary conversion treatment, the literal of the function interface of image and background present contrast colors completely, and vision can not be affected under high light, have made things convenient for user's operation, see also shown in Fig. 3 b.Originally be that effect is not very desirable situation after the binaryzations such as icon of image for part, can be by the simple black and white icon of a default cover in system, use this black and white icon to replace original icon, solve this problem, simultaneously, because the main application of user when using under high light concentrates in the feature operation, call etc. such as enquiring telephone number, so this normal function that also can not influence the user is operated.
Adopted the method for above-mentioned improving display effect of display screen on mobile device, because by sensor devices or the manual mode of setting, with the every screen data presented of mobile device display screen (LCD) content as a video data block, and utilize image gray processing and binary processing method to carry out color conversion, thereby making the color screen image can be converted to black white image under high light shows, thereby improved the literal in the feature operation and the contrast of background greatly, significantly improved display effect; Simultaneously, method of the present invention has made things convenient for the user to select best display effect to carry out specific feature operation in particular environment as required, not only flexible and convenient to use, and system performance is reliable and stable, image transitions accuracy rate height, the scope of application is comparatively extensive, provide a kind of pseudo-classic display packing to mobile device simultaneously, the function of two-value white and black displays screen is provided in colour screen handset, satisfied people some the time special requirement, bring great convenience for people's live and work.
In this instructions, the present invention is described with reference to its certain embodiments.But, still can make various modifications and conversion obviously and not deviate from the spirit and scope of the present invention.Therefore, instructions and accompanying drawing are regarded in an illustrative, rather than a restrictive.
Claims (7)
1, a kind of method of improving display effect of display screen on mobile device is characterized in that, described method may further comprise the steps:
(1) system carries out initialization operation;
(2) system judges whether to improve the processing of display screen display effect according to preset condition;
(3), then carry out the display screen display process in a conventional manner if do not need;
(4) if desired, then system obtains display screen raw display data block message;
(5) system carries out gradation conversion processing operation to described raw display data block message, and obtains gray level image information; Described gradation conversion is handled operation and be may further comprise the steps:
(a) system extracts the component of three kinds of colors one by one according to the raw display data block message in each picture element,
That is:
Red---R
Green---G
Blue---B;
(b) obtain the brightness value Y of corresponding pixel point according to following formula:
Y＝0.30×R+0.59×G+0.11×B；
(c) generation one and the corresponding new bitmap of described raw display data block message, and corresponding picture element is set to have the gray scale point of brightness value Y in this bitmap, thus obtain gray level image information;
(6) system carries out the binary conversion treatment operation to described gray level image information, and obtains black and white binary image information; Described binary conversion treatment operation may further comprise the steps:
(a) system generates image grey level histogram according to described gray level image information;
(b) the trough place corresponding gray between two crests in this image grey level histogram is set at the gray scale segmentation threshold;
(c) according to this gray scale segmentation threshold, the gray-scale value of each picture element in the more described one by one gray level image information;
(d) if the gray-scale value of this picture element more than or equal to described gray scale segmentation threshold, then the gray-scale value of this picture element is set to maximal value;
(e) if the gray-scale value of this picture element less than described gray scale segmentation threshold, then the gray-scale value of this picture element is set to minimum value, thereby obtains black and white binary image information;
(7) system carries out the display process operation according to described black and white binary image information on display screen;
(8) repeat above-mentioned steps (2).
2, the method for improving display effect of display screen on mobile device according to claim 1 is characterized in that, the condition of described systemic presupposition is manual configuration or detects automatically.
3, the method for improving display effect of display screen on mobile device according to claim 2, it is characterized in that, when the condition of systemic presupposition was manual configuration, the described decision operation that whether needs to improve display screen display effect may further comprise the steps:
(1) system operates according to the user, judges the kind of set color display mode;
(2) if the result who does not need to improve display screen display effect is then returned in normal demonstration;
(3) if improve demonstration, then return the result that need improve display screen display effect.
4, the method for improving display effect of display screen on mobile device according to claim 2, it is characterized in that, when the condition of systemic presupposition is manual configuration, also be provided with a light activated element that is connected with inner function circuit in this mobile device, the described decision operation that whether needs to improve display screen display effect is:
(1) light activated element continues to survey the intensity of illumination in the surrounding environment;
(2) if the intensity of illumination that light activated element detected less than the threshold value of systemic presupposition, is then returned the result who does not need to improve display screen display effect;
(3) if the intensity of illumination that light activated element detected reaches or surpass the threshold value of systemic presupposition, then return the result that need improve display screen display effect.
5, the method for improving display effect of display screen on mobile device according to claim 1 is characterized in that, described bitmap is 256 color bitmaps, and described gray level image information is 256 grades a gray level image.
6, the method for improving display effect of display screen on mobile device according to claim 1 is characterized in that, described gray level image information is 256 grades a gray level image, and described gray scale maximal value is 255, and minimum gray value is 0.
7, according to the method for each described improving display effect of display screen on mobile device in the claim 1 to 6, it is characterized in that, describedly on display screen, carry out display process according to black and white binary image information and be operating as:
Directly black and white binary image information is presented on the display screen;
Perhaps may further comprise the steps:
(1), the icon in the black and white binary image information is replaced with the black and white icon of systemic presupposition, the black and white binary image information that is enhanced according to described raw display data block message;
The black and white binary image information that (2) will strengthen is presented on the display screen.
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| CN103971659A (en) * | 2013-02-05 | 2014-08-06 | 联想移动通信科技有限公司 | Double-mode display electronic equipment and method |
| CN104023165A (en) * | 2014-06-05 | 2014-09-03 | 江苏紫光吉地达环境科技有限公司 | Rapid color discrimination method |
| CN104392707A (en) * | 2014-12-18 | 2015-03-04 | 上海斐讯数据通信技术有限公司 | LCM (Liquid Crystal Display Module) display system and display method based on environment illumination intensity |
| CN105468320B (en) | 2015-11-16 | 2019-02-15 | 歌尔股份有限公司 | A kind of black and white screen display methods, device and intelligent terminal based on Android platform |
| CN106601165B (en) * | 2016-12-15 | 2020-12-04 | 北京小米移动软件有限公司 | Screen display method and device |
| CN107402211B (en) * | 2017-08-03 | 2018-05-01 | 秦皇岛康博四零标志服装有限公司 | Sleeping bag sinking degree measuring system |
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