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WO1999066717A1 - Dispositif de transmission pour transmettre le contenu d'images de maniere cachee - Google Patents

Dispositif de transmission pour transmettre le contenu d'images de maniere cachee Download PDF

Info

Publication number
WO1999066717A1
WO1999066717A1 PCT/EP1999/004135 EP9904135W WO9966717A1 WO 1999066717 A1 WO1999066717 A1 WO 1999066717A1 EP 9904135 W EP9904135 W EP 9904135W WO 9966717 A1 WO9966717 A1 WO 9966717A1
Authority
WO
WIPO (PCT)
Prior art keywords
spectral range
image
additional image
parts
infrared
Prior art date
Application number
PCT/EP1999/004135
Other languages
German (de)
English (en)
Inventor
Matthias Oesterwinter
Original Assignee
Limat Ag
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
Priority claimed from DE19829654A external-priority patent/DE19829654A1/de
Priority claimed from DE19900366A external-priority patent/DE19900366C2/de
Application filed by Limat Ag filed Critical Limat Ag
Priority to AU46107/99A priority Critical patent/AU4610799A/en
Publication of WO1999066717A1 publication Critical patent/WO1999066717A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/32—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device
    • H04N1/32101—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title
    • H04N1/32144—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title embedded in the image data, i.e. enclosed or integrated in the image, e.g. watermark, super-imposed logo or stamp
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/222—Studio circuitry; Studio devices; Studio equipment
    • H04N5/262—Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects ; Cameras specially adapted for the electronic generation of special effects
    • H04N5/272—Means for inserting a foreground image in a background image, i.e. inlay, outlay

Definitions

  • the invention relates to a method for generating and transmitting an overall image, as described in claim 1.
  • an image to be transmitted with essentially unchanged spatial, spectral or Wavelength and intensity information of the image is transmitted so that the image subsequently displayed after the transmission is as similar as possible to the "actual" image, i.e. the image shown corresponds as completely as possible to an image that a viewer perceives without technical aids when looking directly at the "actual" image.
  • the method according to the invention for generating and transmitting an overall image with additional image parts that are not visible when viewed directly comprises the steps of - generating the additional image parts in a second optical spectral range that lies outside of a visible optical spectral range, detecting the overall image in the visible and the second optical spectral range, generating an image content signal from the overall image, Displaying the overall image in accordance with the image content signal in the visible optical spectral range, the additional image parts being transformed into the visible optical spectral range.
  • the additional image parts are for direct viewing, i.e. viewing without the aid of technical aids, because they are generated in a second optical spectral range that lies outside the optical spectral range visible to the human eye (wavelength range of approx. 400 nm-700 nm).
  • the overall image, which contains the additional image parts is detected with a detection device in a spectral range or spectral ranges, which includes both the visible or parts of the visible spectral range and the second optical spectral range.
  • the image content signal generated from this detected overall image essentially contains all image information of the overall image, in particular spatial,
  • the overall image can thus be displayed on the basis of the image content signal in the visible optical spectral range if the detected additional image parts are transformed into the visible optical spectral range in this or one of the preceding steps, i.e. when a wavelength transformation takes place from the second optical spectral range to the visible optical spectral range.
  • the second optical spectral range is preferably the infrared and / or the ultraviolet spectral range, that is to say one or both spectral ranges adjacent to the visible optical spectral range.
  • numerous detection devices for detecting the overall image with the additional image parts often still have a sufficiently high sensitivity to light so that conventional detection devices can be used for the method according to the invention.
  • the additional image parts with an active or light-generating display device by generating light or electromagnetic are advantageous Radiation generated in the second spectral range.
  • the active display device preferably comprises light-emitting diodes (LED) and / or laser diodes, which are arranged in particular in a matrix-like manner and can be activated along the contours of additional image parts.
  • LED light-emitting diodes
  • laser diodes can in particular be conventional infrared LEDs based on III-V or II-VI semiconductor diodes. If larger image intensities of the additional image parts are necessary, the use of laser diodes can be advantageous.
  • semiconductor laser diodes with quantum well or multi-quantum well structures from the group of III-V semiconductor heterostructure systems can also be used, for example
  • Gallium arsenide and / or indium gallium arsenide are used which have high output powers and high spatial coherence in the infrared spectral range. A possibly small sensitivity of certain detection devices for the detection of the overall image can thus be countered effectively.
  • the active display device is a display board or a display treadmill, which are suitable for generating time-changing and / or static additional image parts.
  • the active display device in addition to animations or
  • Additional static image parts can also be shown in the films, which can be specifically changed or generated by activating the active display device.
  • Image parts in the second spectral range are also generated by electromagnetic radiation impinging on a passive display device.
  • This incident electromagnetic radiation can subsequently be reflected by and / or absorbed and re-emitted by the passive display device, the wavelength of the incident electromagnetic radiation not necessarily having to be equal to the wavelength of the re-emitted electromagnetic radiation.
  • An infrared or ultraviolet dye can preferably be used to generate the additional image parts with the passive display device.
  • such a dye can be designed such that it has a large and as uniform as possible absorption coefficient in the visible spectral range, but a small one in the infrared or ultraviolet spectral range
  • Electromagnetic radiation impinging on the passive display device is absorbed or reflected in a wavelength-selective manner by such an infrared or ultraviolet dye, the absorption in the visible spectral range and the
  • a dye that fluoresces in the infrared spectral range is used to generate the additional image parts with the passive display device. Impinging electromagnetic radiation or light, particularly in the visible spectral range, can stimulate such a fluorescent dye to fluoresce.
  • An average wavelength of the fluorescent light emitted by the passive display device is greater than an average wavelength of the incident light and, with a suitable choice of the fluorescent dye, can be in the infrared spectral range.
  • the passive display device comprises a reflector which generates the additional image parts by reflecting light or electromagnetic radiation from an infrared radiation source.
  • infrared lamps infrared lasers can also be used as infrared radiation sources. The light of the infrared radiation source reflected by the reflector is thus in the infrared spectral range.
  • the spatial information or image information of the additional image parts can be done either by targeted absorption and / or transmission of the incident light onto or through the passive display device with the reflector, so that only certain incident light rays are reflected by the reflector or the infrared radiation source is generated and is already projecting a suitable image onto the reflector without absorption or transmission for generating the additional image parts in the passive display device.
  • the reflector preferably consists of a matt or slightly roughened metal plate and the infrared radiation source consists of an infrared laser with a beam deflection device for scanning or deflecting an infrared laser beam.
  • the infrared laser beam impinging on the matted metal plate can be scanned in such a way that the additional image parts are generated by reflection of this infrared laser beam impinging on it.
  • the repetition rate of the scanning process can be selected so that the scanning process follows the
  • Step of detection in the overall image shown is no longer perceived by the human eye.
  • one that works in the second optical spectral range is used to generate the additional image parts
  • Projection system used which can be similar in function to a conventional slide projector.
  • an infrared radiation source can be used, which with the aid of imaging optics can image a document illuminated in front of it on a desired projection medium in the infrared spectral range.
  • the projection medium can in particular be a sports field or a tennis net, but also a projection screen specially provided for this purpose.
  • the basic structure of the original can be similar to that of a conventional slide, whereby it has surface areas with low and large transmission coefficients in the infrared spectral range, which are arranged according to the additional image parts.
  • the projection medium used for this advantageously has a high reflectivity in the infrared spectral range.
  • the spatial radiation characteristic of the projection medium can either be isotropic or diffuse or have a preferred radiation direction that is specifically adjusted to the spatial position of a detection device. In the latter case, beam bundling into predetermined ones
  • a CCD camera charge-coupled device camera
  • CCD cameras contain a CCD chip conventionally made from single-crystalline silicon, which converts incident light into electrical signals.
  • the upper sensitivity limit wavelength i.e. The maximum detectable wavelength of such a CCD chip essentially depends on the effective band gap of the semiconductor used and is approximately 1 100 nm for silicon. Numerous conventional CCD chips are therefore still sensitive to light in the infrared spectral range and can be used for the inventive method
  • a television system is preferably used to transmit and display the overall picture. This can in particular consist of at least one television camera, a transmitting and processing device and at least one
  • the additional image contents can either be taken into account or not taken into account, i.e. the image content signal can optionally
  • FIG. 1 shows a tennis court 1 0 with tennis net 1 2 and tennis players 14.
  • the spectator stands 1 6 surrounding the tennis court 10 are limited to the tennis court 1 0 by gangs 1 8.
  • an infrared dye for example, can be applied in a predetermined manner to the tennis net 1 2 before transmission and game start, the geometry of the color application of the infrared dye being one
  • Letter train and / or a graphic image on the tennis net 1 2 corresponds and represents advertising information.
  • the tennis network 1 2 can optionally be illuminated with radiation sources (not shown) in the infrared spectral range during the transmission.
  • the bands 1 8 are designed as active display devices with matrix-like arranged infrared light-emitting diodes (IR LEDs), so that additional additional image parts can be generated on these by activating the infrared light-emitting diodes along the contours and surfaces of the geometries of the further additional image parts to be generated.
  • these additional image parts can also include the
  • the spectators in the bleachers 1 6 and the tennis players 14 on the tennis court 1 2 do not perceive the additional image parts generated on the tennis net 1 2 and the bands 1 8, since they lie in the infrared spectral range which is not visible to the human eye, which is one Influencing or disturbing the spectators and tennis players is excluded by these additional parts of the picture.
  • the overall picture consisting of the playing field environment, spectator stands 1 6, gangs 1 8 and tennis court 10 with tennis net 1 2 and tennis players 14 is detected with the aid of a CCD television camera 20, with the additional picture parts also being recorded.
  • the camera signal output by the CCD television camera 20, which can already correspond to an image content signal of the overall image, is transmitted to one or more image processing devices 22 by electrical or optical data lines 21 and / or by electromagnetic radio transmission.
  • the image content signal is generated from the camera signal supplied to the image processing devices 22. Contributions of the detected additional image parts can optionally be taken into account or not taken into account when generating the image content signal of the overall image.
  • a transformation of spectral information of the additional image parts from the infrared into the visible spectral range takes place, for example, in the image processing devices 22, wherein the spectral information of the additional image parts can also be assigned to a plurality of wavelength information of the visible spectral range in a predetermined or predeterminable manner.
  • the image content signal of the overall image thus generated is transmitted to a television set 24 to display the overall image.
  • the additional image contents are displayed by the television set 24 in the visible spectral range or are omitted if they were not taken into account when generating the image content signal.
  • the television viewer thus takes, for example, a letter train generated on the illustrated band 1 8 '

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Closed-Circuit Television Systems (AREA)

Abstract

L'invention concerne un procédé permettant de produire et de transmettre une image entière, avec des parties d'image additionnelles non visibles au moment où l'image est regardée. Ce procédé comprend les étapes suivantes: produire les parties d'image supplémentaires dans une seconde zone spectrale optique située en dehors d'une zone spectrale optique visible, détecter l'image entière dans la zone spectrale visible et dans la seconde zone spectrale optique, produire un signal de contenu d'image à partir de l'image entière, représenter l'image entière d'après le contenu d'image dans la zone spectrale optique visible, les parties d'image supplémentaires étant transformées dans la zone spectrale optique visible.
PCT/EP1999/004135 1998-06-16 1999-06-15 Dispositif de transmission pour transmettre le contenu d'images de maniere cachee WO1999066717A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU46107/99A AU4610799A (en) 1998-06-16 1999-06-15 Transmission device for transmitting image contents in a concealed manner

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
DE19826829.7 1998-06-16
DE19826829 1998-06-16
DE19829654A DE19829654A1 (de) 1998-07-02 1998-07-02 Übertragungsvorrichtung zur verdeckten Übertragung von Bildinhalten
DE19829654.1 1998-07-02
DE19900366.1 1999-01-07
DE19900366A DE19900366C2 (de) 1998-06-16 1999-01-07 Übertragungsvorrichtung zur verdeckten Übertragung von Bildinhalten

Publications (1)

Publication Number Publication Date
WO1999066717A1 true WO1999066717A1 (fr) 1999-12-23

Family

ID=27218455

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1999/004135 WO1999066717A1 (fr) 1998-06-16 1999-06-15 Dispositif de transmission pour transmettre le contenu d'images de maniere cachee

Country Status (2)

Country Link
AU (1) AU4610799A (fr)
WO (1) WO1999066717A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007119033A1 (fr) * 2006-04-13 2007-10-25 Three-D-Signs International Limited procédé de REPRESENTATION d'une image
US10089550B1 (en) 2011-08-17 2018-10-02 William F. Otte Sports video display

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2191361A (en) * 1986-06-06 1987-12-09 Michael Cyril Godin Enchancing the image of retro-reflective projectiles
EP0343634A2 (fr) * 1988-05-24 1989-11-29 Fujitsu Limited Circuit mélangeur de signal vidéo pour un appareil de prise de vue visible/infrarouge
US5118946A (en) * 1990-10-31 1992-06-02 Grumman Aerospace Corporation Circuit for interfacing cryogenic detector array with processing circuit
WO1993002524A1 (fr) * 1991-07-19 1993-02-04 Princeton Electronic Billboard Images televisees a indices inseres selectionnes
EP0797351A1 (fr) * 1996-03-18 1997-09-24 Nippon Television Network Corporation Système et méthode ou le remplacement d'images
WO1998032287A1 (fr) * 1997-01-17 1998-07-23 Fox Sports Productions, Inc. Systeme permettant d'afficher un objet qui ne peut etre vu par une camera
GB2329292A (en) * 1997-09-12 1999-03-17 Orad Hi Tec Systems Ltd Camera position sensing system

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2191361A (en) * 1986-06-06 1987-12-09 Michael Cyril Godin Enchancing the image of retro-reflective projectiles
EP0343634A2 (fr) * 1988-05-24 1989-11-29 Fujitsu Limited Circuit mélangeur de signal vidéo pour un appareil de prise de vue visible/infrarouge
US5118946A (en) * 1990-10-31 1992-06-02 Grumman Aerospace Corporation Circuit for interfacing cryogenic detector array with processing circuit
WO1993002524A1 (fr) * 1991-07-19 1993-02-04 Princeton Electronic Billboard Images televisees a indices inseres selectionnes
EP0797351A1 (fr) * 1996-03-18 1997-09-24 Nippon Television Network Corporation Système et méthode ou le remplacement d'images
WO1998032287A1 (fr) * 1997-01-17 1998-07-23 Fox Sports Productions, Inc. Systeme permettant d'afficher un objet qui ne peut etre vu par une camera
GB2329292A (en) * 1997-09-12 1999-03-17 Orad Hi Tec Systems Ltd Camera position sensing system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007119033A1 (fr) * 2006-04-13 2007-10-25 Three-D-Signs International Limited procédé de REPRESENTATION d'une image
US10089550B1 (en) 2011-08-17 2018-10-02 William F. Otte Sports video display

Also Published As

Publication number Publication date
AU4610799A (en) 2000-01-05

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