WO2017066969A1 - Système et procédé de projection aptes à mesurer automatiquement une distance de plan de projection - Google Patents

Système et procédé de projection aptes à mesurer automatiquement une distance de plan de projection Download PDF

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Publication number
WO2017066969A1
WO2017066969A1 PCT/CN2015/092582 CN2015092582W WO2017066969A1 WO 2017066969 A1 WO2017066969 A1 WO 2017066969A1 CN 2015092582 W CN2015092582 W CN 2015092582W WO 2017066969 A1 WO2017066969 A1 WO 2017066969A1
Authority
WO
WIPO (PCT)
Prior art keywords
projection
projection surface
distance
unit
automatically measuring
Prior art date
Application number
PCT/CN2015/092582
Other languages
English (en)
Chinese (zh)
Inventor
那庆林
麦浩晃
黄彦
Original Assignee
神画科技（深圳）有限公司
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 神画科技（深圳）有限公司 filed Critical 神画科技（深圳）有限公司
Priority to PCT/CN2015/092582 priority Critical patent/WO2017066969A1/fr
Publication of WO2017066969A1 publication Critical patent/WO2017066969A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/74—Projection arrangements for image reproduction, e.g. using eidophor
    • 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]

Definitions

  • the present invention relates to projection systems and, more particularly, to a projection system and method for automatically measuring the distance of a projection surface.
  • the projection system in the related art usually performs manual focusing, and the purpose of focusing is only for clear projection, and there is no data generation of the distance between the projection system and the projection surface, and therefore, the functions are also relative. Behind, it is not possible to automatically make corresponding picture adjustments based on the distance data between the projection system and the projection surface.
  • the technical problem to be solved by the present invention is to provide a projection system and method for automatically measuring the distance of a projection surface.
  • the technical solution adopted by the present invention to solve the technical problem thereof is: constructing a projection system for automatically measuring the distance of the projection surface, comprising:
  • a projection unit configured to project an image
  • a collimated light source that emits an optical signal to a projection surface onto which the projected image is projected
  • a monitoring unit that observes an optical signal and generates corresponding optical image information
  • An image analyzing unit receives the light image information and generates distance information of the projection surface with respect to the projection lens based on the light image information.
  • the collimated light source is an infrared light source
  • the monitoring unit includes a monitoring lens and an infrared light sensor.
  • the infrared light source is an array light source or a line light source.
  • the infrared light source and the monitoring lens of the monitoring unit are respectively located on two sides of the projection lens of the projection unit.
  • the collimated light source includes at least two infrared light sources, and divides the projection surface into different regions. In the domain, there is an optical signal corresponding to at least one infrared source in each region.
  • the infrared light sensor comprises a CMOS or a CCD.
  • the projection system further includes an information processing unit, and the information processing unit can automatically adjust the brightness output of the projection unit according to the distance information of the projection surface, so that the unit illumination of the projection picture is maintained at a predetermined horizontal range corresponding to the distance information of the projection surface.
  • the projection system further includes an information processing unit, and the information processing unit may perform, according to the distance information of the surface of different regions of the projection surface corresponding to the at least two infrared light sources, the display position of the projected screen content. Correction.
  • the present invention also constructs a method for automatically measuring the distance of a projection surface, comprising the following steps:
  • S3 monitors the optical signal and generates optical image information
  • the method further includes the following steps:
  • the preset projection application screen of the projection screen requires two or more faces on the projection surface on which the projection image falls, and at least two faces are opposite to the viewer.
  • the intersections with angles less than 180 degrees also include the following steps:
  • the S2 includes transmitting different collimated light signals to different faces of the projection surface onto which the projection pattern is projected
  • the S3 includes monitoring different collimated optical signals, and generating optical image information corresponding to optical signals on different planes;
  • the S4 includes generating different surface distance information of the projection surface according to the light image information corresponding to different faces;
  • the S5 includes performing correction of the display position of the projected screen content according to the distance information of different faces of the projection surface.
  • the projection system and method for automatically measuring the projection surface distance of the present invention have the following beneficial effects:
  • the projection system of the present invention automatically measures the distance to the projection surface, and according to the distance, the brightness of the screen, the effect of the image, etc. can be made. Corresponding adjustments and corrections are made to meet the viewer's viewing needs.
  • FIG. 1 is a schematic projection view of a projection system in an embodiment of the present invention
  • FIG. 2 is a schematic diagram of the projection surface projected by the projection system to different positions in the embodiment of the present invention for ranging.
  • FIG. 3 is a schematic structural view of the projection system of FIG. 1 with two infrared light sources ;
  • FIG. 4 is a schematic view of a projection surface formed by projecting the projection system of FIG. 3 onto two intersecting surfaces; [0034] FIG.
  • FIG. 5 is a schematic structural view of the projection system of FIG. 1 with three infrared light sources ;
  • FIG. 6 is a schematic diagram of a projection surface formed by projecting the projection system of FIG. 5 onto three intersecting surfaces; [0036] FIG.
  • FIG. 7 is a schematic structural view of the projection system of FIG. 1 with four infrared light sources ;; [0037] FIG.
  • FIG. 8 is a schematic view of a projection surface formed by projecting the projection system of FIG. 7 onto two intersecting surfaces; [0038] FIG.
  • FIG. 9 is a schematic structural view of a collimated light source of the projection system of FIG. 1 being a collimated linear light source; [0039] FIG.
  • FIG. 10 is a schematic diagram of a projection plane formed by projecting the projection system of FIG. 9 onto three intersecting faces.
  • a projection system for automatically measuring a projection surface distance in a preferred embodiment of the present invention includes: a projection unit 1 for projecting an image; a collimated light source 2, emitting a light signal to a projection image Projection surface S projected to; monitoring unit 3, observing optical signal to generate corresponding light image information; image analyzing unit, receiving light image information and generating distance information of projection surface S relative to the projection lens based on the light image information.
  • the collimated light source 2 is an infrared light source 21, and correspondingly, the monitoring unit 3 includes a monitoring lens 31 and an infrared light sensor 32.
  • the infrared light source 21 can be an array light source or a line light source, and can ensure the directional emission of infrared light. . In other embodiments, the collimated light source 2 can also be a laser.
  • the infrared light source 21 and the monitoring lens 31 of the monitoring unit 3 are respectively located on two sides of the projection lens of the projection unit 1, and after the infrared light source 21 is emitted, the position of the light image formed on the infrared light sensor 32 is facilitated.
  • the projection distance changes and changes.
  • the infrared light sensor 32 includes a CMOS or CCD, and processes the optical signal sensing of the infrared light source 21 observed by the monitoring lens 31 to generate corresponding light image information.
  • the specific measurement process is as follows.
  • the optical signal emitted by the infrared light source 21 forms a spot on the projection surface S.
  • the spot is observed by the monitoring lens 31, and then sensed by the corresponding position of the infrared light sensor 32 to generate a corresponding light image. information.
  • the optical signal of the spot corresponds to a different position on the infrared light sensor 32, and a light image f ⁇ of the corresponding distance between the projection surface S and the projection system is generated.
  • the spot A on one projection surface S corresponds to ⁇ ' on the infrared light sensor 32
  • the spot ⁇ on the other projection surface S corresponds to ⁇ ' on the infrared light sensor 32.
  • the image analyzing unit receives the light image information and generates distance information of the corresponding projection surface S relative to the projection system based on the light image information.
  • the method for measuring the distance of the projection surface by using the projection system and automatically measuring the distance of the projection surface comprises the following steps:
  • the projection system further includes an information processing unit, and the information processing unit can automatically adjust the brightness output of the projection unit 1 according to the distance information of the projection surface S, so that the unit illumination of the projection picture is maintained at A predetermined horizontal range corresponding to the distance information of the projection surface S. For example, if the distance between the projection surface S and the projection system is large, the brightness will be automatically brightened. When the distance between the projection surface S and the projection system is large, the brightness will be automatically adjusted twice, allowing the user to Appropriate brightness can be seen clearly without damaging the eyes.
  • the method for automatically measuring the distance of the projection surface further comprises the following steps:
  • some of the projection surfaces S include a plurality of at least two faces that are not in one plane and are at an angle, and at least two faces are relative to the viewer.
  • the intersection angle of the intersection angle is less than 180 degrees, and the projection surface S projection can be used to view the 3D graphics, and a more realistic 3D picture can be generated in the space.
  • the collimated light source 2 comprises at least two, and in different regions into which the projection surface S is divided, there is at least one light signal of the collimated light source 2 in each region correspond.
  • the center of the projection plane S is generally divided into four quadrants, and the optical signals of at least one collimated light source 2 in each quadrant correspond.
  • the projection surface includes two faces.
  • 3 is a front view of the projector, including a projection lens of the projection unit 1, a monitoring unit 3, and two collimated light sources 2.
  • Figure 4 shows an embodiment of the projection system of Figure 3.
  • the projection picture of the projection unit 1 is projected onto two faces at an angle, the two faces being wall and ceiling respectively, and their intersection lines naturally dividing the projection surface S into two regions, two collimated light sources 2
  • the light signals correspond to the two regions, respectively, forming two spots.
  • the monitoring unit 3 observes, the corresponding light image information is generated, and the image analyzing unit correspondingly generates the distance information of the two different regions of the projection surface S relative to the projection system.
  • the information processing unit may perform correction of the display position of the projected image content according to the distance information of the surface of different regions of the projection surface S corresponding to the two collimated light sources 2, for example: performing three-dimensional processing on the projected image, and allowing the viewer to bring 3D The 3D image effect is seen after the glasses; or, the image on one side can be tilted in the direction of the intersecting line, so that the viewer can see the normal viewing angle with respect to the angle of view.
  • FIG. 5 and FIG. 6 show a case where the projection surface includes three facets.
  • Figure 5 is a front view of the projector, including a projection lens of the projection unit 1, a monitoring unit 3, and three collimated light sources 2.
  • Figure 6 shows an embodiment of the projection system of Figure 5.
  • the projection picture of the projection unit 1 is projected onto three faces at an angle, and the three faces can be two walls and one ceiling, respectively, and the intersection lines naturally divide the projection surface S into three regions, three collimation
  • the light signals of the light source 2 respectively correspond to three regions, forming three spots.
  • the monitoring unit 3 observes, the corresponding light image information is respectively generated, and the image analyzing unit correspondingly generates the distance information of the opposite projection systems of the three different regions of the projection surface S.
  • the information processing unit may perform correction of the display position of the projected picture content according to the distance information of the surface of different regions of the projection surface S corresponding to the three collimated light sources 2, such as three-dimensional processing or tilting of the graphic [0061] As shown in FIG. 7 and FIG. 8, the case where more collimated light sources ⁇ are included.
  • Fig. 7 is a front view of the projector, including a projection lens of the projection unit 1, a monitoring unit 3, and four collimated light sources 2.
  • Figure 8 shows an embodiment of the operation of the projection system of Figure 7.
  • the projection picture of the projection unit 1 is projected onto two faces at an angle, the two faces being wall and ceiling respectively, and the intersection lines thereof naturally divide the projection surface S into two regions, each of which is two collimated light sources 2
  • the light signal corresponds to an area that forms four spots.
  • the monitoring unit 3 observes, corresponding light image information is generated, and the image analyzing unit correspondingly generates distance information of two different regions of the projection surface S relative to the projection system.
  • the information processing unit may perform correction of the display position of the projected picture content according to the distance information of the surface of different regions of the projection surface S corresponding to the four collimated light sources 2, such as three-dimensional processing or tilting of the graphic.
  • the collimated light source 2 when the projection surface S intersects to form more planes, also includes a plurality of infrared light sources, and the light signals of at least one of the collimated light sources 2 on each surface are correspondingly emitted. To the top.
  • the collimated light source 2 may also be a collimated linear light source instead of a point light source, and ensure that the linear light source falls on all different projection surfaces, and the implementation principle and the above embodiment the same.
  • the preset projection application screen of the projected image requires two or more faces on the projection surface S for the projected image to fall thereon, and at least two faces are opposite The intersection angle of the viewer is less than 180 degrees.
  • the method for automatically measuring the distance of the projection surface further includes the following steps
  • S2 includes transmitting different collimated light signals to different faces of the projection surface S to which the projection pattern is projected;
  • S3 includes monitoring different optical signals, and generating optical image information corresponding to the optical signals on different planes;
  • S4 includes generating different surface distance information of the projection surface S according to the light image information corresponding to the different surfaces;

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Projection Apparatus (AREA)

Abstract

L'invention concerne un système et un procédé de projection aptes à mesurer automatiquement une distance de plan de projection. Le système de projection comprend: une unité de projection (1) configurée pour projeter une image ; une source de lumière collimatée (2) transmettant un signal optique à un plan de projection (S) sur lequel une image projetée est diffusée ; une unité de surveillance (3) observant le signal optique pour produire des informations d'image optique correspondantes ; une unité d'analyse d'image recevant les informations d'image optique et produisant, en fonction des informations d'image optique, une information associée à une distance entre le plan de projection (S) et une lentille de projection. Le système de projection est apte à mesurer automatiquement une distance de plan de projection (S), et permet un réglage et un étalonnage correspondants de la luminosité d'une image et d'un effet d'une image selon la distance, ce qui permet de satisfaire des exigences de visualisation d'un spectateur.
PCT/CN2015/092582 2015-10-22 2015-10-22 Système et procédé de projection aptes à mesurer automatiquement une distance de plan de projection WO2017066969A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2015/092582 WO2017066969A1 (fr) 2015-10-22 2015-10-22 Système et procédé de projection aptes à mesurer automatiquement une distance de plan de projection

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2015/092582 WO2017066969A1 (fr) 2015-10-22 2015-10-22 Système et procédé de projection aptes à mesurer automatiquement une distance de plan de projection

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090161091A1 (en) * 2007-12-25 2009-06-25 Casio Computer Co., Ltd. Distance measuring system and projector
CN102109745A (zh) * 2011-01-21 2011-06-29 鸿富锦精密工业（深圳）有限公司 具有亮度调整功能的投影装置及方法
CN102158674A (zh) * 2010-01-07 2011-08-17 精工爱普生株式会社 投影仪及其控制方法
CN103546708A (zh) * 2012-07-12 2014-01-29 Cjcgv株式会社 用于多面投影的影像修正系统及方法
CN103543596A (zh) * 2012-07-12 2014-01-29 Cjcgv株式会社 一种多面投影系统
CN105282472A (zh) * 2015-10-22 2016-01-27 神画科技（深圳）有限公司 自动测量投影面距离的投影系统及方法

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090161091A1 (en) * 2007-12-25 2009-06-25 Casio Computer Co., Ltd. Distance measuring system and projector
CN102158674A (zh) * 2010-01-07 2011-08-17 精工爱普生株式会社 投影仪及其控制方法
CN102109745A (zh) * 2011-01-21 2011-06-29 鸿富锦精密工业（深圳）有限公司 具有亮度调整功能的投影装置及方法
CN103546708A (zh) * 2012-07-12 2014-01-29 Cjcgv株式会社 用于多面投影的影像修正系统及方法
CN103543596A (zh) * 2012-07-12 2014-01-29 Cjcgv株式会社 一种多面投影系统
CN105282472A (zh) * 2015-10-22 2016-01-27 神画科技（深圳）有限公司 自动测量投影面距离的投影系统及方法

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