CN107659802A - Outdoor projection instrument - Google Patents
Outdoor projection instrument Download PDFInfo
- Publication number
- CN107659802A CN107659802A CN201711102686.5A CN201711102686A CN107659802A CN 107659802 A CN107659802 A CN 107659802A CN 201711102686 A CN201711102686 A CN 201711102686A CN 107659802 A CN107659802 A CN 107659802A
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- China
- Prior art keywords
- projection
- picture
- pixel value
- source
- pixel
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3141—Constructional details thereof
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3179—Video signal processing therefor
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3179—Video signal processing therefor
- H04N9/3182—Colour adjustment, e.g. white balance, shading or gamut
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Projection Apparatus (AREA)
Abstract
The present invention provides a kind of outdoor projection instrument, includes the projection main of Built-in Image processing module, and its front is provided with projection lens together towards the pick-up lens of projection screen;Projecting apparatus projects each frame image projection n times in file to source, pick-up lens gradually absorbs each projected picture of each frame picture, and the pixel value of each pixel in each projected picture is gradually extracted by image processing module, image processing module gradually corrects the source pixel value of each pixel in present frame picture, obtains source pixel value RGB(R, g, b), make after projecting again, the new projected pixel values RGB of gained(R, G, B)With the original source pixel value RGB in each frame picture(r0, g0, b0)Meet following relation:R/r0=k1, G/g0=k2, B/b0=k3, k2→k1, k3→k1.The projecting apparatus on the basis of projection brightness is improved more by a small margin, you can is projected out more visible picture in environment out of doors.
Description
Technical field
The present invention relates to optoelectronic device field, especially, is related to a kind of projecting apparatus.
Background technology
At present, projecting apparatus all has a wide range of applications in every field;And in actual use, it usually needs will throw
Shadow scene is under very dim environment, the image that otherwise ambient lighting will be substantially watered down on projection screen, makes projection image
It is smudgy;Only projection brightness is integrally brought up in the case of can ignoring ambient lighting completely, could seen clearly out of doors
Projected picture;And this will make projecting apparatus seriously generate heat, it will significantly shorten the service life of projecting apparatus;Therefore, current projection is set
It is standby generally can not the normal use in outdoors during daylight hours environment for a long time.
The content of the invention
In view of the above-mentioned problems, it is an object of the invention to provide a kind of outdoor projection instrument, the outdoor projection instrument is more small size
Improve on the basis of projection brightness on degree ground, you can be projected out more visible picture in environment out of doors.
The technical solution adopted for the present invention to solve the technical problems is:The outdoor projection instrument includes projection main, described
The front of projection main is provided with projection lens together towards the pick-up lens of projection screen;Include figure in the projection main
As processing module;The projecting apparatus projects each frame image projection n times in file to source(N>2), the pick-up lens intake is respectively
The projected picture each time of frame picture on the projection screen, and pass through each picture in image processing module extraction each time projected picture
The pixel value of vegetarian refreshments, it is designated as projected pixel values RGB(R, G, B);Each frame picture in file is projected for source, when projecting for the first time,
Directly by the original source pixel value RGB of each pixel in each frame picture(r0, g0, b0)It is shown on the liquid crystal display in projection main,
And projected picture is projected by light path system on the projection screen;Hereafter, every time before projection, by each pixel in present frame picture
The projected pixel values RGB of point(R, G, B)The original source pixel value RGB of each pixel in present frame picture in file is projected with source
(r0, g0, b0)Contrasted, obtained:R/ r0=k1, G/ g0=k2, B/ b0=k3;Then each picture in a present frame picture is corrected
The source pixel value of vegetarian refreshments, obtain source pixel value RGB(R, g, b)So that after projecting again, the new projected pixel values RGB of gained
(R, G, B)With original source pixel value RGB(r0, g0, b0)Meet following relation:k2→k1, k3→k1, i.e., often correct a present frame
The source pixel value RGB of each pixel in picture(R, g, b), need to just cause k2、k3More level off to k1, until k1≈ k2≈k3;For
Each frame picture, the duration of last time projection is more than the duration summation of above all number projections, and above all numbers are thrown
The duration summation of shadow is not more than 0.1s.
Preferably, the original source pixel value RGB of each pixel in each frame picture in file is being projected to source(r0, g0, b0)
During modification, retain the copy of a original source projection file;And after the projection of a frame picture is completed, by copying for the frame picture
Shellfish is recalled to, and covers the picture changed;So that after source projection file plays, it is unlikely to lose initial data.
Preferably, described image processing module gradually corrects the source image of each pixel in present frame picture as follows
Plain value RGB(R, g, b)So that after projecting again, the new projected pixel values RGB of gained(R, G, B)With original source pixel value RGB
(r0, g0, b0)Meet following relation:k2→k1, k3→k1:According to R/ r0=k1, G/ g0=k2, B/ b0=k3, such as k2< k1, then g is made
By the increase of setting step-length once, conversely, making g reduce once by setting step-length;Similarly, such as k3< k1, then b is made to increase by setting step-length
Greatly once, conversely, making b reduce once by setting step-length.
The beneficial effects of the present invention are:The source pixel value RGB of each frame picture in file is projected by progressively changing source(R,
G, b)So that in each frame projected picture, the projected pixel values RGB of each pixel(R, G, B)In, R, G, the ratio of tri- components of B
Projected with source in file, the original source pixel value RGB of each pixel of the frame picture(r0, g0, b0)In, r0, g0, b0Three components
Ratio it is consistent so that the definition of the projected picture under outdoor environment greatly improves;Due to the mistake in adjustment projected picture
Cheng Zhong, it is not through the overall mode for improving projection brightness and carries out picture enhancing, therefore greatly saved bulb power, suppresses
The caloric value of projecting apparatus, be advantageous to ensure the service life of projection.
Embodiment
The present invention is further described below:
This outdoor projection instrument includes projection main, and the front of the projection main is provided with projection lens together towards projection screen
Pick-up lens;By automatic focusing system, the visual field picture that pick-up lens is absorbed can be caused just to be thrown for projection lens
The projected picture projected on shadow screen.
Include image processing module in the projection main;Each frame picture that the projecting apparatus is projected to source in file is thrown
Shadow n times(N>2), the pick-up lens absorbs the projected picture each time of each frame picture on the projection screen, and by image at
The pixel value that module extracts each pixel in projected picture each time is managed, is designated as projected pixel values RGB(R, G, B), wherein R, G, B
For variable, change when absorbing each time;Each frame picture in file is projected for source, when projecting for the first time, is directly drawn each frame
The original source pixel value RGB of each pixel in face(r0, g0, b0)It is shown on the liquid crystal display in projection main, and passes through light path system
System projects projected picture on the projection screen, wherein, r0, g0, b0For fixed value;Hereafter, present frame is drawn before projection every time
The projected pixel values RGB of each pixel in face(R, G, B)The original source of each pixel in present frame picture in file is projected with source
Pixel value RGB(r0, g0, b0)Contrasted, obtained:R/ r0=k1, G/ g0=k2, B/ b0=k3;Then a present frame is corrected to draw
The source pixel value of each pixel in face, obtains source pixel value RGB(R, g, b), wherein, r, g, b are variable, correct one-shot change one
It is secondary so that after projecting again, the new projected pixel values RGB of gained(R, G, B)With original source pixel value RGB(r0, g0, b0)It is full
The following relation of foot:k2→k1, k3→k1, i.e., often correct a present frame picture in each pixel source pixel value RGB(R, g, b),
With regard to k need to be caused2、k3More level off to k1, until k1≈ k2≈k3, wherein, about wait the degree of closeness representated by symbol to depend on projection
Definition requirement, usually, can make k1, k2, k3In, the value of minimum number is not less than the 95% of maximum number, that is, allows the mistake for having 5%
Difference.
For each frame picture, the duration of last time projection is more than the duration summation of above all number projections, and preceding
The duration summation of all number projections in face is not more than 0.1s.Accordingly, for each frame picture, spectators basically can not notice its tune
Journey is had suffered, and the projected picture after the complete adjustment of higher resolution can only be clearly seen that.
Above-mentioned outdoor projection instrument, the original source pixel value RGB of each pixel in each frame picture in file is being projected to source
(r0, g0, b0)During modification, retain the copy of a original source projection file;And after the projection of a frame picture is completed, by this
The copy of frame picture is recalled to, and covers the picture changed;So that after source projection file plays, it is unlikely to lose original
Data.
Described image processing module gradually corrects the source pixel value RGB of each pixel in present frame picture as follows
(R, g, b)So that after projecting again, the new projected pixel values RGB of gained(R, G, B)With original source pixel value RGB(r0, g0,
b0)Meet following relation:k2→k1, k3→k1:According to R/ r0=k1, G/ g0=k2, B/ b0=k3;Such as k2< k1, then g is made by setting
Step-length increases once(Now, G increases, k2Increase), such as k2> k1, g is reduced once by setting step-length(Now, G reduces, k2Subtract
It is small);Similarly, such as k3< k1, then b is made to increase once by setting step-length, such as k3> k1, b is reduced once by setting step-length.
Above-mentioned outdoor projection instrument, the source pixel value RGB of each frame picture in file is projected by progressively changing source(R, g,
b)So that in each frame projected picture, the projected pixel values RGB of each pixel(R, G, B)In, R, G, the ratio of tri- components of B with
In source projection file, the original source pixel value RGB of each pixel of the frame picture(r0, g0, b0)In, r0, g0, b0Three components
Ratio is consistent, so that the definition of the projected picture under outdoor environment greatly improves;Due to the process in adjustment projected picture
In, it is not through the overall mode for improving projection brightness and carries out picture enhancing, therefore has greatly saved bulb power, it is suppressed that
The caloric value of projecting apparatus, be advantageous to ensure the service life of projection.
The foregoing is only presently preferred embodiments of the present invention, be not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification for being made, equivalent substitution, it should be included in the scope of the protection.
Claims (3)
1. a kind of outdoor projection instrument, including projection main, it is characterised in that:The front of the projection main is provided with and projection lens
Together towards the pick-up lens of projection screen;Include image processing module in the projection main;The projecting apparatus is thrown source
Each frame image projection n times in shadow file(N>2), the throwing each time of each frame picture of the pick-up lens intake on the projection screen
Shadow picture, and by the pixel value of each pixel in image processing module extraction each time projected picture, it is designated as projected pixel values
RGB(R, G, B);Each frame picture in file is projected for source, when projecting for the first time, directly by the original of each pixel in each frame picture
Stock pixel value RGB(r0, g0, b0)It is shown on the liquid crystal display in projection main, and is thrown on the projection screen by light path system
Penetrate projected picture;Hereafter, every time before projection, by the projected pixel values RGB of each pixel in present frame picture(R, G, B)With source
Project the original source pixel value RGB of each pixel in present frame picture in file(r0, g0, b0)Contrasted, obtained:R/ r0=
k1, G/ g0=k2, B/ b0=k3;Then the source pixel value of each pixel in a present frame picture is corrected, obtains source pixel value RGB
(R, g, b)So that after projecting again, the new projected pixel values RGB of gained(R, G, B)With original source pixel value RGB(r0, g0,
b0)Meet following relation:k2→k1, k3→k1, i.e., often correct a present frame picture in each pixel source pixel value RGB(R,
G, b), need to just cause k2、k3More level off to k1, until k1≈ k2≈k3;For each frame picture, last time projection when grow up
In the duration summation of above all number projections, and above the duration summation of all number projections is not more than 0.1s.
2. outdoor projection instrument according to claim 1, it is characterised in that:Each picture in each frame picture in source projection file
The original source pixel value RGB of vegetarian refreshments(r0, g0, b0)During modification, retain the copy of a original source projection file;And complete
After the projection of one frame picture, the copy of the frame picture is recalled to, covers the picture changed;So that source projection file plays
After complete, it is unlikely to lose initial data.
3. outdoor projection instrument according to claim 1 or 2, it is characterised in that:Described image processing module is as follows
Gradually correct the source pixel value RGB of each pixel in present frame picture(R, g, b)So that after projecting again, the new throwing of gained
Shadow pixel value RGB(R, G, B)With original source pixel value RGB(r0, g0, b0)Meet following relation:k2→k1, k3→k1:According to R/
r0=k1, G/ g0=k2, B/ b0=k3, such as k2< k1, then g is made to increase once by setting step-length, conversely, making g reduce by setting step-length
Once;Similarly, such as k3< k1, then b is made to increase once by setting step-length, conversely, making b reduce once by setting step-length.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201711102686.5A CN107659802A (en) | 2017-11-10 | 2017-11-10 | Outdoor projection instrument |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201711102686.5A CN107659802A (en) | 2017-11-10 | 2017-11-10 | Outdoor projection instrument |
Publications (1)
Publication Number | Publication Date |
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CN107659802A true CN107659802A (en) | 2018-02-02 |
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ID=61121298
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CN201711102686.5A Pending CN107659802A (en) | 2017-11-10 | 2017-11-10 | Outdoor projection instrument |
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Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101507286A (en) * | 2006-08-17 | 2009-08-12 | 索尼爱立信移动通讯股份有限公司 | Projector adaptation |
CN101931822A (en) * | 2009-06-19 | 2010-12-29 | 立景光电股份有限公司 | Automatic white balance system and method thereof |
CN104836968A (en) * | 2014-12-22 | 2015-08-12 | 联想(北京)有限公司 | Information processing method and electronic device |
CN106331665A (en) * | 2015-06-30 | 2017-01-11 | 芋头科技(杭州)有限公司 | Projection image adjustment method and projector |
-
2017
- 2017-11-10 CN CN201711102686.5A patent/CN107659802A/en active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101507286A (en) * | 2006-08-17 | 2009-08-12 | 索尼爱立信移动通讯股份有限公司 | Projector adaptation |
CN101931822A (en) * | 2009-06-19 | 2010-12-29 | 立景光电股份有限公司 | Automatic white balance system and method thereof |
CN104836968A (en) * | 2014-12-22 | 2015-08-12 | 联想(北京)有限公司 | Information processing method and electronic device |
CN106331665A (en) * | 2015-06-30 | 2017-01-11 | 芋头科技(杭州)有限公司 | Projection image adjustment method and projector |
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Application publication date: 20180202 |