CN108805819B - Image display mode automatic switching method - Google Patents
Image display mode automatic switching method Download PDFInfo
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- CN108805819B CN108805819B CN201810173967.8A CN201810173967A CN108805819B CN 108805819 B CN108805819 B CN 108805819B CN 201810173967 A CN201810173967 A CN 201810173967A CN 108805819 B CN108805819 B CN 108805819B
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- 238000000034 method Methods 0.000 title claims abstract description 16
- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 28
- 238000001914 filtration Methods 0.000 claims description 29
- 238000007790 scraping Methods 0.000 claims description 21
- 239000000470 constituent Substances 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 4
- 238000010586 diagram Methods 0.000 claims 1
- 238000007670 refining Methods 0.000 abstract description 3
- 208000027418 Wounds and injury Diseases 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 208000014674 injury Diseases 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 210000002858 crystal cell Anatomy 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000013507 mapping Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000007781 pre-processing Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000002310 reflectometry Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
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- G06T5/70—
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/90—Determination of colour characteristics
Abstract
The present invention relates to a kind of image display mode automatic switching methods, this method includes providing display pattern automatic switchover system, on the basis of refining image procossing and two stage filter mode, accurate judgement is carried out to the brightness that screen is currently shown, in the case where currently display image overall brightness is excessively high, display screen to be automatically switched into the scene of liquid crystal projection apparatus Projection Display.
Description
Technical field
The present invention relates to image domains more particularly to a kind of image display mode automatic switching methods.
Background technique
Liquid crystal projection apparatus is segmented into liquid crystal board projector and liquid crystal light valve projector, the former is in projector market
Major product.Liquid crystal is the substance between liquid and solid, itself does not shine, and job specification is greatly influenced by temperature,
Operating temperature is -55 DEG C~+77 DEG C.Projector utilizes the photoelectric effect of liquid crystal, i.e. liquid crystal molecule is arranged under electric field action
It changes, influences the light transmittance or reflectivity of its liquid crystal cells projector, to influence its optical property, generating has not
With the image of gray-level and color.Since LCD projector color rendition is preferable, resolution ratio is up to SXGA standard, small in size, weight
Amount is light, carries also very convenient, is the main product in projector market.According to the piece number of liquid crystal board, LCD projector point
For three pieces machine and single-chip microcontroller, and the type of single panel projection instrument is seldom, it is seen that most or three pieces machine.
Liquid crystal projection apparatus has the advantages that inherent radiation is small, light intensity is low etc., for frequently using various terminals
It is a kind of effective protection type alternate device for the user of device display screen curtain, display screen is substituted, however, what
When substitute and how to substitute, it is current that there is no carry out correlative study.
Summary of the invention
To solve the above-mentioned problems, the present invention provides a kind of image display mode automatic switching methods, scheme in fining
On the basis of processing and two stage filter mode, accurate judgement is carried out to the brightness that screen is currently shown, in current display figure
In the case that picture overall brightness is excessively high, in order to avoid the injury to user's eye, display screen is automatically switched into liquid crystal projection apparatus
The scene of Projection Display.
For this purpose, the present invention at least has following important inventive point:
(1) it in the case where currently display image overall brightness is excessively high, in order to avoid the injury to user's eye, cuts automatically
The mode for changing Projection Display into improves the automation level of display control；
(2) by the fining image procossing of signature analysis by column, the accuracy and efficiency of subsequent image identification be ensure that；
(3) image is filtered using two stage filter equipment, has effectively filtered out the various noises in image.
According to an aspect of the present invention, a kind of image display mode automatic switching method is provided, this method includes providing
Display pattern automatic switchover system currently shows screen on the basis of refining image procossing and two stage filter mode
Brightness carries out accurate judgement, in the case where currently display image overall brightness is excessively high, display screen is automatically switched into liquid crystal
The scene that projector is shown, the display pattern automatic switchover system include:
Display drive device is arranged in mobile terminal, for obtaining current display data, and cache and described in exporting
Current display data；
Screen scraping equipment connect with the timing device, also connect with display drive device, for being based on the timing
The output of equipment grabs a secondary screen every prefixed time interval, to obtain screen scraping image；
First filter apparatus is arranged in mobile terminal, connect with the screen scraping equipment, for receiving screen scraping
Image executes Wiener filtering processing to the screen scraping image, to obtain and export the first filtering image；
Second filter apparatus is arranged in mobile terminal, connect with first filter apparatus, for receiving described first
Filtering image, and homomorphic filtering processing is executed to first filtering image, to obtain the second filtering image, and export described the
Two filtering images.
Specific embodiment
Embodiment of the present invention will be described in detail below.
In order to overcome above-mentioned deficiency, the present invention has built a kind of image display mode automatic switching method, and this method includes
Display pattern automatic switchover system is provided, on the basis of refining image procossing and two stage filter mode, screen is currently shown
The brightness shown carries out accurate judgement, in the case where currently display image overall brightness is excessively high, display screen to be automatically switched into
The scene of liquid crystal projection apparatus Projection Display, the display pattern automatic switchover system efficiently solve display pattern to projection mode
The problem of switching.
The display pattern automatic switchover system shown according to an embodiment of the present invention includes:
Display drive device is arranged in mobile terminal, for obtaining current display data, and cache and described in exporting
Current display data.
Then, continue that the specific structure of display pattern automatic switchover system of the invention is further detailed.
In the display pattern automatic switchover system, further includes:
Screen scraping equipment connect with the timing device, also connect with display drive device, for being based on the timing
The output of equipment grabs a secondary screen every prefixed time interval, to obtain screen scraping image.
In the display pattern automatic switchover system, further includes:
First filter apparatus is arranged in mobile terminal, connect with the screen scraping equipment, for receiving screen scraping
Image executes Wiener filtering processing to the screen scraping image, to obtain and export the first filtering image.
In the display pattern automatic switchover system, further includes:
Second filter apparatus is arranged in mobile terminal, connect with first filter apparatus, for receiving described first
Filtering image, and homomorphic filtering processing is executed to first filtering image, to obtain the second filtering image, and export described the
Two filtering images；
Timing device is arranged in mobile terminal, for providing fixed cycle operator for each electronic equipment of mobile terminal.
In the display pattern automatic switchover system, further includes:
Column signature analysis equipment is connect with second filter apparatus, for receiving second filtering image, obtains institute
The R color component values, G color component values and B color component values of each pixel in the second filtering image are stated, and according to each
The ownership column of pixel carry out pixel to export the R color component of each pixel of each column to arrange the classification for index
Value, G color component values and B color component values；
Constituent analysis equipment is connect with the column signature analysis equipment, for each column each pixel execute with
Lower processing: calculate the product of the R color component values of each pixel in the column, G color component values and B color component values with
The composition characteristics value for obtaining each pixel, by the composition characteristics value phase adduction of all pixels point in the column divided by described
The vertical resolution of second filtering image is exported the numerical value of acquisition as the column characteristic value of the column；
Suspicious column detection device is connect with the constituent analysis equipment, and column characteristic value is deviateed top column characteristic value recently
Reach the default column for deviateing threshold value with the average value of the nearest column characteristic value in lower section to export as suspicious column；
Screen request sending device is thrown, is connect with the suspicious column detection device, for combining all suspicious column to obtain
Suspicious subgraph is based on the suspicious subgraph, when the overall brightness of the suspicious subgraph is excessively high, issues and throws screen request letter
Number, otherwise, issue without throwing screen signal；
Projection device is arranged in mobile terminal, shields request sending device with the throwing respectively and display driving is set
Standby connection, for when receiving the throwing screen request signal, the current display data in the display drive device to be carried out
Projection Display is also used to stop when receiving the screen signal without throwing to the current display in the display drive device
The Projection Display of data；
Liquid crystal display is arranged in mobile terminal, shields request sending device with the throwing respectively and the display is driven
Dynamic equipment connection, for stopping to the current display in the display drive device when receiving the throwing screen request signal
The liquid crystal display of data is also used to restore when receiving the screen signal without throwing to working as in the display drive device
The liquid crystal display of preceding display data；
Show indicator light, connect respectively with the projection device and the liquid crystal display, be used for and meanwhile show described in
The current working status of projection device and the liquid crystal display；
Wherein, in the screen scraping equipment, a secondary screen is grabbed every prefixed time interval, to obtain screen scraping figure
As including: every prefixed time interval, from the current display read in the display drive device in the display drive device
Data, using the current display data as screen scraping image.
In the display pattern automatic switchover system:
The call-in reporting equipment, the timing device and the display drive device are integrated in same integrated circuit
On plate.
In the display pattern automatic switchover system, further includes:
Call-in reporting equipment, for when receiving call-in reporting, issuing without throwing screen signal.
In the display pattern automatic switchover system:
The call-in reporting equipment is also used to while issuing without throwing screen signal, controls the projection device stopping pair
The Projection Display of current display data in the display drive device, and control the liquid crystal display and restore to described aobvious
Show the liquid crystal display of the current display data in driving equipment.
In addition, image filtering, i.e., press down the noise of target image under conditions of retaining image minutia as far as possible
System, is indispensable operation in image preprocessing, and the quality for the treatment of effect will directly influence subsequent image processing and divide
The validity and reliability of analysis.
Not perfect due to imaging system, transmission medium and recording equipment etc., digital picture formed at it, transmission log mistake
The often pollution by a variety of noises in journey.In addition, certain links in image procossing when the picture object inputted and are not so good as pre-
Also noise can be introduced when thinking in result images.These noises often show as one on the image and cause the isolated of stronger visual effect
Pixel or block of pixels.Generally, noise signal it is uncorrelated to the object to be studied it occur with useless message form, upset figure
The observable information of picture.For data image signal, psophometer is either large or small extreme value, these extreme values are acted on by plus-minus
On the true gray value of image pixel, cause bright, dim spot to interfere image, greatly reduce picture quality, influence image restoration,
The progress of the subsequent work such as segmentation, feature extraction, image recognition.The filter for constructing a kind of effectively inhibition noise must be taken into consideration
Two basic problems: the noise that can be effectively removed in target and background；Meanwhile can protect well image object shape,
Size and specific geometry and topological features.
One of common image filtering mode is nonlinear filter, it is, in general, that when signal spectrum and noise frequency
When composing aliasing or such as the noise as caused by mission nonlinear or there are non-gaussian to make an uproar when containing nonadditivity noise in signal
Sound etc.), traditional linear filter technology, if Fourier converts, while filtering out noise, always blurred picture is thin in some way
Section (such as edge) and then the extraction property reduction for leading to the positioning accuracy and feature as linear character.And nonlinear filter is
Based on a kind of Nonlinear Mapping relationship to input signal, often a certain specific noise approximatively can be mapped as zero and retained
Signal wants feature, thus it can overcome the shortcoming of linear filter to a certain extent.
Using display pattern automatic switchover system of the invention, switch for display pattern in the prior art to projection mode
The technical issues of being difficult to realize ensure that the accurate of subsequent image identification by the fining image procossing of signature analysis by column
Degree and efficiency, and image is filtered using two stage filter equipment, the various noises in image are effectively filtered out, upper
On the basis of stating, high-precision identification is carried out to the brightness of image, to be in the case where currently display image overall brightness is excessively high
The injury to user's eye is avoided, the mode that projection is shown is automatically switched into, is asked to solve above-mentioned technology
Topic.
It is understood that although the present invention has been disclosed in the preferred embodiments as above, above-described embodiment not to
Limit the present invention.For any person skilled in the art, without departing from the scope of the technical proposal of the invention,
Many possible changes and modifications all are made to technical solution of the present invention using the technology contents of the disclosure above, or are revised as
With the equivalent embodiment of variation.Therefore, anything that does not depart from the technical scheme of the invention are right according to the technical essence of the invention
Any simple modifications, equivalents, and modifications made for any of the above embodiments still fall within the range of technical solution of the present invention protection
It is interior.
Claims (4)
1. a kind of image display mode automatic switching method, this method includes providing display pattern automatic switchover system, fine
On the basis of changing image procossing and two stage filter mode, accurate judgement is carried out to the brightness that screen is currently shown, to show currently
Diagram as overall brightness it is excessively high in the case where, display screen is automatically switched into the scene of liquid crystal projection apparatus Projection Display, feature
It is, the display pattern automatic switchover system includes:
Display drive device is arranged in mobile terminal, for obtaining current display data, and cache and export it is described currently
Show data；
Screen scraping equipment, connect with timing device, also connect with display drive device, for based on the defeated of the timing device
Out, a secondary screen is grabbed every prefixed time interval, to obtain screen scraping image；
First filter apparatus is arranged in mobile terminal, connect with the screen scraping equipment, for receiving screen scraping figure
Picture executes Wiener filtering processing to the screen scraping image, to obtain and export the first filtering image；
Second filter apparatus is arranged in mobile terminal, connect with first filter apparatus, for receiving first filtering
Image, and homomorphic filtering processing is executed to first filtering image, to obtain the second filtering image, and export second filter
Wave image；
Timing device is arranged in mobile terminal, for providing fixed cycle operator for each electronic equipment of mobile terminal；
Column signature analysis equipment is connect with second filter apparatus, for receiving second filtering image, obtains described the
The R color component values of each pixel, G color component values and B color component values in two filtering images, and according to each pixel
The ownership column of point carry out pixel to export R color component values, the G of each pixel of each column to arrange the classification for index
Color component values and B color component values；
Constituent analysis equipment is connect with the column signature analysis equipment, executes following place for each pixel to each column
Reason: the product of the R color component values of each pixel in the column, G color component values and B color component values is calculated to obtain
The composition characteristics value of each pixel, by the composition characteristics value phase adduction of all pixels point in the column divided by described second
The vertical resolution of filtering image is exported the numerical value of acquisition as the column characteristic value of the column；
Suspicious column detection device is connect with the constituent analysis equipment, and column characteristic value is deviateed the nearest column characteristic value in top under
The average value of the nearest column characteristic value in side reaches the default column for deviateing threshold value and exports as suspicious column；
Screen request sending device is thrown, is connect with the suspicious column detection device, for all suspicious column combinations are suspicious to obtain
Subgraph is based on the suspicious subgraph, when the overall brightness of the suspicious subgraph is excessively high, issues and throws screen request signal,
Otherwise, it issues without throwing screen signal；
Projection device is arranged in mobile terminal, shields request sending device with the throwing respectively and the display drive device connects
It connects, for when receiving the throwing screen request signal, the current display data in the display drive device to be projected
Display is also used to stop when receiving the screen signal without throwing to the current display data in the display drive device
Projection Display；
Liquid crystal display is arranged in mobile terminal, shields request sending device with the throwing respectively and display driving is set
Standby connection, for stopping to the current display data in the display drive device when receiving the throwing screen request signal
Liquid crystal display, be also used to receive it is described without throwing screen signal when, restore to show current in the display drive device
The liquid crystal display of registration evidence；
It shows indicator light, is connect respectively with the projection device and the liquid crystal display, for showing the projection simultaneously
The current working status of equipment and the liquid crystal display；
Wherein, in the screen scraping equipment, a secondary screen is grabbed every prefixed time interval, to obtain screen scraping image packet
It includes: every prefixed time interval, from the current display data read in the display drive device in the display drive device,
Using the current display data as screen scraping image.
2. the method as described in claim 1, it is characterised in that:
Call-in reporting equipment, the timing device and the display drive device are integrated on same integrated circuit board.
3. method according to claim 2, which is characterized in that the system also includes:
Call-in reporting equipment, for when receiving call-in reporting, issuing without throwing screen signal.
4. method as claimed in claim 3, it is characterised in that:
The call-in reporting equipment is also used to control the projection device while issuing without throwing screen signal and stop to described
The Projection Display of current display data in display drive device, and control the liquid crystal display and restore to drive the display
The liquid crystal display of current display data in dynamic equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810173967.8A CN108805819B (en) | 2018-03-02 | 2018-03-02 | Image display mode automatic switching method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810173967.8A CN108805819B (en) | 2018-03-02 | 2018-03-02 | Image display mode automatic switching method |
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| Publication Number | Publication Date |
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| CN108805819A CN108805819A (en) | 2018-11-13 |
| CN108805819B true CN108805819B (en) | 2019-04-23 |
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Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3267990B2 (en) * | 1991-09-18 | 2002-03-25 | 株式会社東芝 | On-screen display circuit |
| KR20040091730A (en) * | 2002-03-14 | 2004-10-28 | 코닌클리케 필립스 일렉트로닉스 엔.브이. | Projection device having a mode selection unit |
| JP2004004284A (en) * | 2002-05-31 | 2004-01-08 | Canon Inc | Projection display apparatus |
| CN101470275B (en) * | 2007-12-26 | 2010-12-08 | 台达电子工业股份有限公司 | Light source switching mechanism used for projection system |
| CN201312342Y (en) * | 2008-04-24 | 2009-09-16 | 方东 | Mobile phone supporting projection display mode |
| CN201393242Y (en) * | 2009-03-31 | 2010-01-27 | 上海华勤通讯技术有限公司 | Mobile phone with projection function |
| CN202816328U (en) * | 2012-08-24 | 2013-03-20 | 南京巨鲨显示科技有限公司 | Rapid control system for professional display |
| CN103197907B (en) * | 2013-03-15 | 2016-01-20 | 中标软件有限公司 | A kind of method realizing projection mode and switch under LINUX desktop operating system |
| CN105022167B (en) * | 2014-04-24 | 2018-04-03 | 惠州市德赛西威汽车电子股份有限公司 | A kind of double mode head-up display device and its display methods |
| CN104185001B (en) * | 2014-09-09 | 2018-08-31 | 联想(北京)有限公司 | A kind of control method and device |
| CN105799513A (en) * | 2014-12-31 | 2016-07-27 | 比亚迪股份有限公司 | Vehicle-mounted head rising display system and user interface projection display method thereof |
| JP6776619B2 (en) * | 2016-03-15 | 2020-10-28 | カシオ計算機株式会社 | Projection device, projection control method and program |
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2018
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