CN107659802A - Outdoor projection instrument - Google Patents

Outdoor projection instrument Download PDF

Info

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
Authority
CN
China
Prior art keywords
projection
picture
pixel value
source
pixel
Prior art date
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.)
Pending
Application number
CN201711102686.5A
Other languages
Chinese (zh)
Inventor
范永浩
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CN201711102686.5A priority Critical patent/CN107659802A/en
Publication of CN107659802A publication Critical patent/CN107659802A/en
Pending legal-status Critical Current

Links

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

Outdoor projection instrument
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.
CN201711102686.5A 2017-11-10 2017-11-10 Outdoor projection instrument Pending CN107659802A (en)

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
CN107659802A true CN107659802A (en) 2018-02-02

Family

ID=61121298

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201711102686.5A Pending CN107659802A (en) 2017-11-10 2017-11-10 Outdoor projection instrument

Country Status (1)

Country Link
CN (1) CN107659802A (en)

Citations (4)

* Cited by examiner, † Cited by third party
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

Patent Citations (4)

* Cited by examiner, † Cited by third party
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

Similar Documents

Publication Publication Date Title
US6836361B2 (en) Method and apparatus to increase visual contrast for video projection screen
US2222414A (en) Projection system
TW429332B (en) Projection screen using variable power lenticular lens for asymmetric viewing angle
CN105847705A (en) Method and device for adjusting camera exposure time
CN112585532B (en) Illumination device and display apparatus
CN110099261A (en) A kind of LED dot matrix backlight, projection arrangement and the projecting method of projection device
GB534973A (en) Improvements in or relating to television receivers
JPS5596933A (en) Overhead projector
CN102305987A (en) LCD projector light source system employing three sheet LED lamp plates
CN107659802A (en) Outdoor projection instrument
CN206557518U (en) A kind of UV projection system for 3D printing speeds
CN110007501A (en) A kind of display device
CN104965386A (en) Projection display equipment with multilayer reflecting thin-films
CN206850871U (en) Reflective high photographing instrument when preventing light filling
CN204989742U (en) Projection display device with multi -layer reflection film
CN209356837U (en) Projector
JPS54111218A (en) Image pickup unit
US20160147132A1 (en) Environmental lighting system and method
CN208432843U (en) A kind of new pattern laser projector light source system fluorescence color wheel device
CN207601496U (en) A kind of erect image color corrector for color development unit
CN203981951U (en) Novel high resolving power back projection camera lens
CN109996049B (en) Lens scanning imaging system
CN203204298U (en) Polarized 3D system based on polarization recovery
CN215268547U (en) Laser projection display system
CN109523623B (en) Method for realizing real projection backlight illumination effect

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20180202