EP1104628A1 - Dispositif pour la production d'images tridimensionnelles - Google Patents

Dispositif pour la production d'images tridimensionnelles

Info

Publication number
EP1104628A1
EP1104628A1 EP99944625A EP99944625A EP1104628A1 EP 1104628 A1 EP1104628 A1 EP 1104628A1 EP 99944625 A EP99944625 A EP 99944625A EP 99944625 A EP99944625 A EP 99944625A EP 1104628 A1 EP1104628 A1 EP 1104628A1
Authority
EP
European Patent Office
Prior art keywords
pixel
image
pixels
heights
height
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.)
Ceased
Application number
EP99944625A
Other languages
German (de)
English (en)
Inventor
Alf Holger Tschersich
Frank Zubke
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
Publication of EP1104628A1 publication Critical patent/EP1104628A1/fr
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/30—Image reproducers
    • H04N13/388—Volumetric displays, i.e. systems where the image is built up from picture elements distributed through a volume

Definitions

  • the invention relates to an image carrier for generating autostereoscopically viewed images with perspective views of the recorded object field.
  • a three-dimensional display in which several simple lenses are placed on a display surface, which include a convex lens with a short focal length, a light source and an elastic drive positioned in between.
  • a convex lens with a short focal length By varying the distance between the convex lens and the light source using the flexible drive, the position of the image of the light source imaged by the convex lens is changed in order to finally project imaginary images.
  • the device also includes the possibility that these simple lenses can be organized into geometrical figures, for example cylindrical or spherical bodies, so that the projection of the imaginary “front or back image” can be made possible by the viewer within a viewing radius of 360 °
  • Direct projection techniques for the eye which produce imaginary images imaginatively in space by zooming with simple lenses, and use a perceptual psychological effect (without glasses or similar aids), which is based on an empirically visually acquired memory, that the distance assessment of an object is related to the size of its perceived image.
  • a disadvantage of the anaglyph process mentioned is the high loss of color components.
  • the above-mentioned shutter glasses method has the disadvantage of having to use special glasses and, due to the image division, to use only half the refresh rate.
  • US 4,571,616 and DE 35 29 819 the three-dimensional image effect is impaired proportionally by changing the viewing angle and the distance to the screen in order to be able to perceive larger spatial perspectives of the image objects.
  • the latter method requires a high level of technical effort in order to increase the spatial image effect in such a way that hidden image contents can be conveyed to the viewer. This is done by duplicating the vertical lines, by additional projections, or by adapting them to the viewing position (calculation).
  • this method has the disadvantage that the stereoscopy is lost when the screen is rotated around an orthogonal screen.
  • This disadvantage applies to rotating screens or screens with a horizontal screen level ("Responsive Workbench" - Chip 5/98 p.32), which are used by several viewers at the same time.
  • the vertical line screen method is used.
  • the method of direct projection techniques using simple lenses contains, compared with the above methods, considerable quality reductions with higher technical and financial expenditure, which multiplies considerably with increasingly complex mediated image content.
  • the object of the invention is to develop a screen whose surface structure can produce a three-dimensional image, in which no separate technical aids are necessary in order to perceive the image depth.
  • This screen is to be designed in such a way that no fixed positioning of the viewer is required. zen or no new image to be calculated when changing the position without having to accept the quality of perception. In particular, it must be taken into account that the stereoscopic effect is retained when the screen is rotated around an orthogonal screen.
  • the screen is preferably composed of individual LED segments (pixels), which can each generate the three additive primary colors.
  • LEDs can be used both optically active elements and reflecting elements of suitable dimensions.
  • the LEDs are located as heads on a height-adjustable pixel carrier. When activated, these pixel carriers can be moved to different height positions (pixel heights) independently of one another. A distinction is made between the pixel heights in the zero position (corresponding to the zero level) and the pixel heights differing in the direction of the viewer and the opposite direction.
  • the zero position is not necessarily identical to the starting position, since you can move the pixel level to a target height, which then generates the corresponding zero level. With appropriate control, the pixels can be lowered and / or raised below or above the zero level.
  • the pixel carrier can e.g.
  • the spatial depth information can e.g. are converted proportionally into pixel heights from a Z buffer, i.e. without further intermediate steps.
  • other drive units with correspondingly short activation times e.g. using other field-electric effects, etc.
  • the piezo crystals mentioned can also be used.
  • the advantageous effect of the invention is that a height profile is generated by the movable screen surface to the previous methods.
  • This height profile enables a pronounced spatial depth perception of the image signal from a side view, but also from all other viewing directions.
  • the information about the image depth can be used directly to convert it into relief-like image depth, i.e. that the image color signals with the image depth of the objects represented by the pixel heights will complete a picture of new quality.
  • the greater the difference in height and its resolution in individual steps the more the possibility of generating an actual spatial depth that corresponds to the depth reproduced by color and brightness improves.
  • each relief structure has one Drawing file is assigned clock syncron.
  • the above term relief structure defines itself as the screen surface formed from the pixel matrix with a fixed height of each individual pixel.
  • FIG. 1 a single LED segment of a device for generating three-dimensional images can be seen schematically in FIG. 1, which contains a piezo element (1) in the pixel carrier (3) which, when a voltage is applied in the direction (7 ) Expands viewer position.
  • This pixel carrier (3) has a foot (6), over which there is a further piezo element (2) in the form of a shell, which carries the entire mechanism with its end or is attached to a mounting plate (4) with its end, and which allows a further basic movement away from the viewer (8).
  • the entire device for generating three-dimensional images consists here e.g. (for use as an advertising board) from a relatively large 480 x 270 matrix of the segments mentioned and has the size 160 cm x 90 cm.
  • the pixel carrier (3) runs in 3 linearly arranged electric ring coils (4).
  • An iron core (5) is integrated in the pixel carrier, which is positioned at the appropriate height by the electric ring coils.
  • a spiral spring (6) is located on the pixel carrier, which conveys the pixel carrier to the starting position when it is not activated.

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

L'invention concerne un dispositif pour la production d'images destinées à une observation autostéréoscopique, présentant des vues en perspective du champ d'objet formé. La surface d'écran est composée de segments individuels (pixels) qui peuvent chacun produire les trois couleurs de base additives. Les pixels constituent la tête de porte-pixels dont la hauteur peut être modifiée. Ces porte-pixels peuvent être, lors de la commande, mis, indépendamment l'un de l'autre, à des hauteurs différentes (hauteurs de pixels). Lors d'une commande correspondante, un abaissement et/ou une élévation des pixels peut être obtenue. Des effets de hauteur peuvent être produits aussi bien en direction de l'observateur qu'en sens inverse. Des informations de profondeur spatiale, provenant par exemple d'une mémoire tampon de profondeur, peuvent être transformées proportionnellement en hauteurs de pixels, c'est-à-dire sans étapes intermédiaires. Avec la technique de calcul à disposition, les informations sur la profondeur peuvent être utilisées directement pour être transformées en profondeur d'image du type relief, c'est-à-dire que les signaux de couleurs d'image se complètent pour former une image d'une nouvelle qualité avec la profondeur d'image des objets qui est représentée par les hauteurs de pixels.
EP99944625A 1998-09-22 1999-09-08 Dispositif pour la production d'images tridimensionnelles Ceased EP1104628A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19843296 1998-09-22
DE19843296A DE19843296A1 (de) 1998-09-22 1998-09-22 Vorrichtung zur Erzeugung dreidimensionaler Bilder
PCT/EP1999/006611 WO2000018141A1 (fr) 1998-09-22 1999-09-08 Dispositif pour la production d'images tridimensionnelles

Publications (1)

Publication Number Publication Date
EP1104628A1 true EP1104628A1 (fr) 2001-06-06

Family

ID=7881745

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99944625A Ceased EP1104628A1 (fr) 1998-09-22 1999-09-08 Dispositif pour la production d'images tridimensionnelles

Country Status (7)

Country Link
EP (1) EP1104628A1 (fr)
JP (1) JP2002525990A (fr)
CN (1) CN1319310A (fr)
AU (1) AU5746499A (fr)
CA (1) CA2344042A1 (fr)
DE (1) DE19843296A1 (fr)
WO (1) WO2000018141A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1413148B1 (fr) * 2001-07-23 2009-10-28 Koninklijke Philips Electronics N.V. Appareil de traitement d'images stereoscopiques et procede connexe
DE102008006812A1 (de) * 2008-01-31 2009-08-06 Transmechatronics Gmbh Vorrichtung und Verfahren zur Erzeugung einer räumlichen Darstellung
KR101541893B1 (ko) 2014-02-25 2015-08-06 포테닛 주식회사 디스플레이 장치 및 이의 구동 방법
CN105700159B (zh) * 2014-11-29 2019-03-15 昆山工研院新型平板显示技术中心有限公司 3d柔性显示屏及其显示方法
CN105116559B (zh) * 2015-09-29 2017-10-24 南安市腾龙专利应用服务有限公司 一种裸眼3d显示器及其工作方法
EP3425907B1 (fr) * 2017-07-03 2022-01-05 Vestel Elektronik Sanayi ve Ticaret A.S. Afficheur et procédé de rendu d'une image tridimensionnelle
CN110706611A (zh) * 2019-10-28 2020-01-17 广州粤靓计算机有限责任公司 一种立体显示屏、立体显示屏显示方法及存储介质

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0764020A (ja) * 1993-06-15 1995-03-10 Nikon Corp 三次元ディスプレイおよびこれを用いた表示方法
US5793918A (en) * 1997-03-03 1998-08-11 Hogan; Richard J. Movable 3d display

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0018141A1 *

Also Published As

Publication number Publication date
CA2344042A1 (fr) 2000-03-30
JP2002525990A (ja) 2002-08-13
CN1319310A (zh) 2001-10-24
AU5746499A (en) 2000-04-10
DE19843296A1 (de) 2000-04-13
WO2000018141A1 (fr) 2000-03-30

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