WO2008091237A1 - Système auto-stéréoscopique - Google Patents

Système auto-stéréoscopique Download PDF

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Publication number
WO2008091237A1
WO2008091237A1 PCT/UA2007/000025 UA2007000025W WO2008091237A1 WO 2008091237 A1 WO2008091237 A1 WO 2008091237A1 UA 2007000025 W UA2007000025 W UA 2007000025W WO 2008091237 A1 WO2008091237 A1 WO 2008091237A1
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WO
WIPO (PCT)
Prior art keywords
image
lens elements
equivalents
optical
elements
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Ceased
Application number
PCT/UA2007/000025
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English (en)
Russian (ru)
Inventor
Vasiliy Borisovich Odnorozhenko
Beniamin Gurgenovich Stepanjan
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Individual
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Individual
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Publication of WO2008091237A1 publication Critical patent/WO2008091237A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B3/00—Simple or compound lenses
    • G02B3/0006—Arrays

Definitions

  • the invention relates to techniques for demonstration / display of stereoscopic images and can be used in television, advertising, in computing, in control and management systems, CAD, gaming equipment, to create simulators / simulators, in avionics and instrument making, in science, education, medicine for 3D modeling and visual representation of static images and dynamic processes in 3D format.
  • 3D imaging continues to be a major technical challenge.
  • the method of color anaglyphs is known, which consists in obtaining a stereoscopic image using two images / angles painted in complementary / complementary colors that make up a stereo pair, which is then viewed using glasses with different color filters.
  • each eye perceives only its own angle / image.
  • due to the effect of binocular combination of angles (convergence) a three-dimensional image is formed.
  • This method is limited by the user's discomfort regarding the need to wear / use filter glasses.
  • Gabriel Lippman proposed a technology for recording and reproducing three-dimensional images using embossed optical plates consisting of orderly placed microlenses, and marked the beginning of the development of a multi-component approach to three-dimensional graphics.
  • Lippman's raster-based idea was developed by Maurice Bonnet. Further development of this approach includes technical solutions with variations of lens reliefs or lattice structures, for obtaining stereo images using a stereo pair specially prepared for separation.
  • the indicated preparation consists in graphically transforming the stereopair angles so that when combining the image and the raster, taking into account the refraction of the rays in it, both angles are restored separately for each eye.
  • a technical solution is known - according to the application WO 99/09750 of 02.25.1999, IPC 7 G 02 B 27/22, H 04 N 13/00 Stereoscopic viewing system.
  • a well-known technical solution includes the preparation of the original stereo pair by the Lippman-Bonnet method, which consists in the fact that the stereo pair angles are interspersed with inverted vertical stripes while maintaining the order of their sequence — by the number of lens elements of the lenticular raster, which, when superimposed on a compressed strip image, separately restores both foreshortenings - for the left and right eye.
  • the practical implementation of this stereoscopic viewing system requires precise positioning of the optical elements of the lenticular raster relative to the strips of the prepared image.
  • Known autostereoscopic system - according to patent RU N °
  • Known technical solution includes a display surface of the visualization with a specially prepared image, which is divided into pixels.
  • the elements of the optical lattice are positioned relative to the pixels of the image and combined into a standalone removable lattice plate.
  • the removable grid plate should provide 2D / 3D image conversion.
  • the exact positioning of the grating plate on the display relative to the image pixels is a complex optical mechanical task that ne 4 peshena in the prior art and in this case the inevitable distortion of the projected image through the plate and loss of stereo effect.
  • the known autostereoscopic system includes means for alignment in the form of an optical test implemented in the form of an oriented slit raster on the monitor screen together with a mechanical displacement of the removable screen (shift / rotation) with optical elements relative to the prepared image on the visualization surface.
  • An obvious limitation of this system is the requirement for a flat monitor screen and the discomfort of the unavoidable special actions of the viewer to adjust the position of the removable screen, which takes time and is accompanied by the inevitable loss of video information.
  • Step 2 Automatic telescopic system
  • the technical solution of the autostereoscopic system is known - according to the patent of Ukraine UA 14885 U, ⁇ IZ ⁇ G 02 ⁇ 27/22, H 04 N 13/00 “Automatic telescopic system (StereoStep)”, which includes a visualization surface with a stereo pair prepared for separation and a removable screen with a raster optical a system located in front of the visualization surface.
  • the stereo pair is made in the form of an anaglyph
  • the removable screen consists of two rasters located on different sides relative to the common scattering light stream of the focal plane, each of which consists of lens elements and / or their optical equivalents laid on the surface without gaps, with the formation coaxial pairs of lens elements, each of which contains an anaglyphic filter (the closest analogue).
  • the essence of the known invention lies in the fact that the separation of the angles of a stereo pair of anaglyphically prepared image is carried out by the raster structure provided in the claimed technical solution with anaglyphic filtering, which does not require precise positioning relative to the visualization surface.
  • This provides 2D compatibility, eliminates the need to adjust the removable screen during installation and use, and also provides stereo playback with stable quality anaglyphic technology on any, not just a flat screen.
  • the conversion of a 2D / 3D format for a user is reduced only to connecting a removable screen to a visualization surface with a prepared image.
  • representing a stereo pair in the form of an anaglyph ensures the placement of each of its angles on the entire visualization surface, which ensures high quality representation of each angle of the stereo image by eliminating the loss of accuracy - image clarity.
  • the well-known autostereoscopic system uses the anaglyphic principle of representing a three-dimensional scene (object), which is accompanied by color distortion of the image, since it uses color coding for two angles (two additional / complementary colors).
  • the present invention is the creation of an autostereoscopic system that provides high quality color reproduction of stereo images, while at the same time providing the user with comfort when viewing stereo images.
  • the autostereoscopic system including a visualization surface with an image prepared for separation and a removable screen located in front of the visualization surface, consists of two rasters located on different sides relative to the common focal plane scattering the light flux, each of which consists of lens elements and / or their optical equivalents placed on the surface without gaps with the formation of coaxial pairs of lens elements and / or their optical equivalent ENTOV according to the invention
  • the picture is composed of sequences of n angles with the frequency of repetition of at least 0.02 - 0.05 sec " ⁇ , and each pair of lens elements and / or their equivalents provided n optical eklipsnymi gates, each of which opens a corresponding him the angle.
  • the essence of the claimed invention lies in the fact that the eclipse method is used to separate image angles.
  • the eclipse (obturator) method of stereoscopy consists in separating a stereo pair image by alternately overlapping the light fluxes for the left and right eyes in front of the lenses of the projection device and / or in front of the viewer's eyes. Overlapping should be performed synchronously so that each eye sees only the image intended for it. There should be at least two eclipse shutters, but in general there can be n by the number of image angles.
  • the repetition rate should be no less than 0.02-0.05 sec "1 , since this frequency is the limit of the sensitivity of the viewer's eye to the rate of change of images.
  • a common part of all autostereoscopic eclipse constructions are two mandatory modules: a positioned optical shutter and an angle distributor.
  • the task of the first module depending on the position, be transparent for one particular angle and opaque for another.
  • the angle distributor in eclipse systems performs the task of orienting light fluxes belonging to different angles into different eyes.
  • these functions are performed by a structure of two rasters located on different sides with respect to the common focal plane, which scatters the luminous flux, each of which consists of lens elements and / or their optical equivalents placed on the surface without gaps with the formation of coaxial pairs of lens elements and / or their equivalents, with each pair of lens elements and / or their equivalents equipped with n eclipse shutters, in exact accordance with the number of angles.
  • a structure of two rasters located on different sides with respect to the common focal plane, which scatters the luminous flux, each of which consists of lens elements and / or their optical equivalents placed on the surface without gaps with the formation of coaxial pairs of lens elements and / or their equivalents, with each pair of lens elements and / or their equivalents equipped with n eclipse shutters, in exact accordance with the number of angles.
  • the raster structure as a multicomponent carrier of an integrated image, does not require, as in the closest analogue, precision positioning relative to the visualization surface. This provides the system with 2D compatibility and eliminates the need to adjust the screen with consistent stereo effect quality.
  • the eclipse method provides for the consistent use of each angle with its placement on the entire surface of the visualization, thereby ensuring the completeness, clarity, contrast and transmission of the entire gamut of image colors.
  • a stereo effect with consistent quality is provided for many viewers, which can be compared with direct observation of the screen.
  • the necessary optical changes in video content for the user consist only in attaching (applying) a removable screen to the visualization display surface, where video content is broadcast in the described structured format, that is, in the form of an alternating sequence of angles that follow with a frequency of at least 0.02 - 0 05 sec. "1 .
  • the set of essential features of the technical solution which is claimed, solves the problem - providing high quality color rendering of the stereo image while ensuring comfort for the user when reconstructing the stereo effect and when converting 2D format to 3D format.
  • the inventive autostereoscopic system has passed model and laboratory tests at the Engineering Agency "Antenet", which is confirmed by examples of specific performance.
  • FIG. 1 shows an autostereoscopic system (general view);
  • FIG. 2 shows the raster design of the removable screen (a variant of the lenticular rasters), (a) the raster design in assembly, (b) the components of the removable screen;
  • FIG. 3 shows a pair of lens elements with a common optical axis
  • FIG. 4 shows a diagram of the formation of a structural video sequence
  • FIG. 5 shows a control circuit of an eclipse shutter matrix.
  • An autostereoscopic system includes a visualization surface (1) with an image prepared for separation and a removable screen (2) with a raster optical system located in front of the visualization surface (1).
  • the removable screen (2) consists of two rasters - (3), (4) located on different sides relative to the common scattering light flux of the focal plane (5).
  • Each of the two rasters (3), (4), consists of lens elements (6) and / or their optical equivalents placed on the surface without gaps, with the formation of pairs (7) of coaxial lens elements (6) with a common optical axis (8 )
  • the image consists of a sequence of n angles of 9 ⁇ - 9 n , and their repetition rate is not less than 0.02 - 0.05 sec. "1 .
  • Each pair (7) of coaxial lens elements (6) and / or their equivalents is equipped with 10 e - 1O n eclipse shutters, each of which opens each of the corresponding angles of the 9 ⁇ - 9 n sequence synchronously with their repetition rate.
  • each of the shutters of each lens element (6) must synchronously open a corresponding aspect fragment, it is advisable to control the eclipse shutters 10i - 1O n to combine them into a matrix (11) structurally identical to the matrix of lens elements, bearing in mind that each lens element has n eclipse shutters 10 ⁇ - 1O n , in our example we consider a variant of two eclipse shutters 10i, 1O 2 .
  • the variant with lenticular rasters is considered and, accordingly, the matrix of eclipse shutters accommodates two elementary strip shutters for each lens element, while each shutter has two states - transparent and opaque.
  • the eclipse shutter matrix (11) is located in the focal plane (5) of the raster optical system.
  • FIG. 4 The formation of a structured video sequence is shown in FIG. 4.
  • the image angles (9i ... 9 n ) that follow with a frequency of not less than 0.02 - 0.05 sec L are focused with the following orientation so that the adjacent angles are directed separately for the corresponding eye and, thus , a structured video sequence is perceived by the viewer as a three-dimensional stereo image.
  • the focus and orientation of each angle is provided by the optical raster system, and the eclipse shutter (10) ensures that the corresponding angles appear in the corresponding sections of the raster system.
  • the matrix (11) of the eclipse shutters (10) is controlled by any known method, for example, as shown in FIG. 5, where the matrix of liquid crystal elements is used as the matrix (11) of the eclipse shutters (10).
  • the manifestation of the stereoscopic effect when freely hanging the screen (2) on the surface (1) of visualization with structured 2D video content occurs in this way.
  • paired 1O 2 bands are opaque.
  • the next labeling signal simultaneously turns on the transparency mode for paired bands of the matrix, and unpaired bands become opaque. In this case, an image is formed for the second eye of the viewer, provided that the requirements for the repetition rate of frame views are met.
  • a stereo pair of stereoscopic images is formed and the viewer sees a three-dimensional picture in the frame.
  • the number of stripes of the eclipse matrix increases in accordance with the number of angles and the control scheme should ensure the corresponding inclusion of their transparent and opaque section.
  • the three-dimensional picture conveys the full gamut of colors of 2D video content.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)

Abstract

L'invention concerne la démonstration / l'affichage d'images stéréoscopiques et peut s'utiliser à la télévision, en publicité et en information, dans systèmes de contrôle / commande, en CAO, dans des équipements de jeu, pour créer des simulateurs / dispositifs d'entraînement, en avionique et en conception d'instruments, en sciences, dans l'éducation et la médecine pour la modélisation en trois dimensions et la représentation visuelle d'images statiques ou de processus dynamiques au format 3D. Le système auto-stéréoscopique de l'invention comprend une surface de visualisation comportant une image prête à la séparation et un écran amovible qui est placé en face de la surface de visualisation et qui se compose de deux trames disposées de deux côtés par rapport à un plan focal commun qui diffuse le flux lumineux. Chaque trame se compose d'éléments de lentille et/ou de leurs équivalents optiques disposés sur la surface sans intervalles, de manière à former des paires coaxiales de lentilles et/ou de leurs équivalents. L'image est constituée d'une séquence 'n' angles de prise de vue qui se succèdent à une fréquence d'au moins 0,02 - 0,05(-1) s, et chaque paire d'éléments de lentille et/ou de leurs équivalents optiques est munie de 'n' obturateurs à éclipse. Comme la formation d'une séquence vidéo structurée se fait avec l'utilisation d'angles de prise de vue disposés sur toute la surface de visualisation et, partant, inclut tous les éléments macrographiques de l'image, le tableau tridimensionnelle transmet toute la gamme de couleurs d'un contenu vidéo en 2D.
PCT/UA2007/000025 2007-01-24 2007-04-10 Système auto-stéréoscopique Ceased WO2008091237A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
UA200700771 2007-01-24
UAA200700771 2007-01-24

Publications (1)

Publication Number Publication Date
WO2008091237A1 true WO2008091237A1 (fr) 2008-07-31

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104871071A (zh) * 2013-12-19 2015-08-26 3Dtau股份有限公司 自动立体系统
EP2910996A4 (fr) * 2012-10-22 2016-06-22 Uab 3D Tau Système autostéréoscopique

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1166344A1 (ru) * 1983-06-03 1985-07-07 Предприятие П/Я М-5876 Устройство дл воспроизведени стереоскопического телевизионного изображени
RU2117414C1 (ru) * 1991-12-23 1998-08-10 Олег Кимович Никифоров Способ формирования стереоскопического изображения на экране дисплея и система для его реализации
US20040263970A1 (en) * 2003-01-29 2004-12-30 Mckee William James Convertible autostereoscopic flat panel display
US6859240B1 (en) * 2000-01-27 2005-02-22 Mems Optical Inc. Autostereoscopic display

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1166344A1 (ru) * 1983-06-03 1985-07-07 Предприятие П/Я М-5876 Устройство дл воспроизведени стереоскопического телевизионного изображени
RU2117414C1 (ru) * 1991-12-23 1998-08-10 Олег Кимович Никифоров Способ формирования стереоскопического изображения на экране дисплея и система для его реализации
US6859240B1 (en) * 2000-01-27 2005-02-22 Mems Optical Inc. Autostereoscopic display
US20040263970A1 (en) * 2003-01-29 2004-12-30 Mckee William James Convertible autostereoscopic flat panel display

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2910996A4 (fr) * 2012-10-22 2016-06-22 Uab 3D Tau Système autostéréoscopique
CN104871071A (zh) * 2013-12-19 2015-08-26 3Dtau股份有限公司 自动立体系统
CN104871071B (zh) * 2013-12-19 2018-10-09 3D Tau股份有限公司 自动立体系统

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