EP1200935A1 - Obtention d'un fichier ameliore pour images numeriques - Google Patents

Obtention d'un fichier ameliore pour images numeriques

Info

Publication number
EP1200935A1
EP1200935A1 EP00955352A EP00955352A EP1200935A1 EP 1200935 A1 EP1200935 A1 EP 1200935A1 EP 00955352 A EP00955352 A EP 00955352A EP 00955352 A EP00955352 A EP 00955352A EP 1200935 A1 EP1200935 A1 EP 1200935A1
Authority
EP
European Patent Office
Prior art keywords
image
user
image file
viewing window
digital image
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.)
Withdrawn
Application number
EP00955352A
Other languages
German (de)
English (en)
Inventor
Eliot I. Bernstein
Brian G. by Bernstein Eliot L. UTLEY
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.)
Iviewit Holdings Inc
Original Assignee
IVIEWIT HOLDINGS Inc
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 IVIEWIT HOLDINGS Inc filed Critical IVIEWIT HOLDINGS Inc
Publication of EP1200935A1 publication Critical patent/EP1200935A1/fr
Withdrawn legal-status Critical Current

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
    • H04N1/387—Composing, repositioning or otherwise geometrically modifying originals
    • H04N1/3872—Repositioning or masking
    • H04N1/3873—Repositioning or masking defined only by a limited number of coordinate points or parameters, e.g. corners, centre; for trimming
    • H04N1/3875—Repositioning or masking defined only by a limited number of coordinate points or parameters, e.g. corners, centre; for trimming combined with enlarging or reducing
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T3/00—Geometric image transformations in the plane of the image
    • G06T3/40—Scaling of whole images or parts thereof, e.g. expanding or contracting

Definitions

  • the present invention is directed to a system and a method for producing enhanced digital images and, in particular, to a system and a method for producing enhanced digital images having improved resolution for zooming and/or panning within a single file.
  • pixel refers to the smallest resolvable element of an image, either on a screen or stored in memory.
  • Each pixel in a monochrome image has its own brightness, from 0 for black to the maximum value (e.g., 255 for an eight-bit pixel) for white.
  • each pixel has its own brightness and color, usually represented as a triplet of red, green, and blue intensities.
  • the teaching in the art is to generate a digital image file having the same number of pixels, or less, as the number that can be shown in a target viewing window. This results in a small source image file size, thereby speeding the transmission of the image file across a network.
  • the target viewing window is typically maintained very small, e.g., 1 60 x 1 20 pixels, to further limit the number of pixels needed in the digital image file.
  • the teaching in the art is to reduce the number of pixels in the digital image file to decrease the size of the image file before compression, so that the compressed image file can be more quickly transmitted over a limited- bandwidth network.
  • this teaching has been unsatisfactory in providing high-resolution digital images. It has also been unsatisfactory in providing digital images in large viewing screens, such as, for example, full- sized VGA display monitor screens of 640 x 480 pixels.
  • mapping or travel web sites Another example of prior systems is mapping or travel web sites.
  • a user selects a desired location and the mapping web site responds by downloading map data from a map database.
  • the web site retrieves additional source data, e.g., additional new map images, and sends it to the user computer.
  • additional source data e.g., additional new map images
  • One drawback of this type of system is that each zoom or pan operation requires the downloading of additional data over the network connection. This method is slow, and does not allow the user to zoom and pan around a set of data unless the network connection is maintained. Accordingly, there is a need for a system and a method for providing enhanced digital images.
  • a system and a method for providing enhanced digital images within which a user can zoom or pan without loss of resolution and without pixelation there is a need for a system and method for providing enhanced digital images that can be transmitted over a network in a reasonable amount of time. Further yet, there is a need for a system and a method for producing enhanced digital images suitable for uploading and for downloading to a display. Also, there is a need for a system and method for providing a digital image file suitable for efficient file transfers of high resolution digital images, thereby dispensing with the need to engage in long and slow, conventional file downloads in order to maintain viewing quality.
  • a method of providing a digital image file for viewing in a viewing window of a user display, the viewing window having a predetermined size includes providing a digital image file having an image size comprising a fixed number of pixels representative of an image. The image size to be displayed is greater than that of the predetermined viewing window size.
  • the method further includes the step of associating a user interface with the digital image file.
  • the user interface is configured to display the digital image file in the viewing window and to allow a user to zoom into the image displayed in the viewing window.
  • a method of providing an enhanced digitized image file to a user includes predefining a viewing window size in which the digitized image file is to be displayed to a user; providing a digitized image file having an image size greater than of the predefined viewing window size; compressing the digitized image file; and providing the compressed image file to a network server.
  • an enhanced digital image file is disclosed. The enhanced digital image file is displayed on a client computer display system having a viewing window, the viewing window having a predetermined frame size.
  • the enhanced digital image file includes digitized image data representative of an image, wherein the digitized image data has a number of pixels sufficient to allow a user to magnify the digitized image in the viewing window by a magnification factor of greater than one without appreciable pixelation.
  • the enhanced digital image file further includes control data associated therewith for permitting the user to control the magnification factor.
  • FIG. 1 is a block diagram of a system for providing an enhanced digital image file according to an exemplary embodiment
  • FIG. 2 is a flowchart of a method for providing an enhanced digital image file from a print film image according to an exemplary embodiment
  • FIG. 3 is a screen print of a display screen on a user display illustrating an enhanced digital image file according to an exemplary embodiment
  • FIG. 4 is a screen print of a display screen on a user display illustrating a zoomed view of the enhanced digital image of FIG. 3
  • FIG. 5 is a screen print of a display screen on a user display illustrating a panned and zoomed view of the enhanced digital image of FIG. 3;
  • FIG. 6 is a flowchart of a method for providing an enhanced digital image file from a digital image according to an exemplary embodiment
  • FIG. 7 is an illustration relating a source image, a viewing image, and a viewing window to one another.
  • FIG. 1 illustrates a system 1 0 for providing an enhanced digital image file according to an exemplary embodiment.
  • System 1 0 includes a camera 1 2 which may be a conventional print film camera, such as, print film cameras manufactured by Nikon, Canon, Hasselblad, Kodak, or other manufacturers, or may alternatively be a digital camera, a digital video recording device (e.g., including 3CCD technology), an analog recording device such as a reel-to-reel recording device, a live video recording system, etc.
  • camera 1 2 may further include a solid state storage medium or memory.
  • Camera 1 2 may be mountable, such as on a tripod or on a stand, hand-held or fixed, and may include a 24-32 mm lens. Camera 1 2 is utilized to obtain an image of a scene that is being photographed or video recorded.
  • the image may be a print film image (e.g., a high gloss, photographic print), analog image, digital image, negative, transparency, etc.
  • system 10 may be utilized in conjunction with any imaging or video recording system, such as, medical imaging equipment.
  • camera 1 2 may be an imaging device, such as a magnetic resonance imaging (MRI) device, an X-ray device, a microscope with a camera attached thereto, etc.
  • MRI magnetic resonance imaging
  • X-ray X-ray
  • microscope with a camera attached thereto, etc.
  • system 10 also includes a developing device 14, which can be any device or collection of devices, for developing the print film image taken by camera 1 2.
  • developing device 1 4 is combined with and integral to camera 1 2.
  • Developing device 1 4 is not required in an embodiment in which the image is a digital image.
  • System 1 0 also includes an enlarging device 1 6 for enlarging the image which is developed by developing device 1 4. The image may be photographically enlarged from a print film image, a negative, or other transparency.
  • the system of FIG. 1 further includes a scanning device 1 8, for scanning images or photographs in order to obtain a digitized representation of the source image in the form of a digital image file.
  • a scanning device 1 8 for scanning images or photographs in order to obtain a digitized representation of the source image in the form of a digital image file.
  • Any suitable scanning software may be utilized.
  • a UMAX Astra scanner is utilized in conjunction with Microsoft Photo Editor software.
  • Scanning device 1 8 outputs the digital image file in a bitmapped format (e.g., BMP, TIF, GIF, etc.)
  • the device may include compression software to compress the digital image file into a compressed format (e.g ., JPEG) .
  • a print film image from camera 1 2 may be provided directly to enlarging device 1 6 or directly to scanning device 1 8.
  • the digitized image file from camera 1 2 may be used directly without first creating a print image.
  • a print image may first be obtained from the camera's digitized source image by sending it to a suitable printing device 20. In this manner, the printed image can then be optically enlarged and scanned to provide the enhanced digitized image.
  • System 1 0 also includes a computer 22 configured to process the digital image file created by the above-mentioned devices.
  • Computer 22 may be a personal computer, a laptop computer, a mini computer, a microprocessor, a mainframe computer, a network computer, a server computer, or any other suitable computer or computer system.
  • Computer 22 typically includes a central processing unit (CPU), a read only memory (ROM), a random access memory (RAM), a display device such as an SVGA display monitor, an input device and/or an output device.
  • Computer 22 may also include any other hardware device, peripheral device, or software necessary to perform the functions described herein.
  • the input device may include a keyboard, a mouse, or other pointing device, or other devices for allowing user input.
  • the output device may include a printer (e.g., a black- and-white or color laser or inkjet printer) .
  • Computer 22 also includes an interface circuit for transmitting and/or receiving data over a network or link 24, such as, a local area network (LAN), a wide area network (WAN), an internet protocol network (e.g., the Internet, an intranet), a broadcast network, a satellite or cable television network, a digital video transmission path, etc.
  • Computer 22 may further act as a network server or may be in communication with such a network server.
  • the function of network 24 may be, in a simple case, performed by other components of the system.
  • computer 22 is accessible by the Internet 26 via network 24 (e.g., a local area network).
  • a user computer 28 is used to access the enhanced digital image file stored in or provided by computer 22 (acting as a network server) .
  • Computer 28 may also load the image file to a storage device (e.g., a hard disk drive) to be used for display on a display 30.
  • User computer 28 may operate an Internet browser, such as Netscape Navigator configured to communicate with the Internet 26 or an intranet or other network.
  • Display 30 may be any type of user display, such as a cathode ray tube (CRT), liquid crystal display (LCD), hand-held personal digital assistant (PDA) display, mobile phone display, etc.
  • Display 30 normally has a predetermined display resolution (e.g., 1 ,280 x 1 ,024 pixels, 640 x 480 pixels, 320 x 240 pixels, etc.).
  • user computer 28 may be combined with display 30 in a single, integrated system, such as would be the case for a WebTV brand system, a high-definition television (HDTV), a PDA, etc.
  • the combined user computer and display system may be referred to herein as the display system.
  • the computer display system typically has a viewing window on the display for viewing the image in a particular frame.
  • the viewing window may be all or a portion of the total viewing area of display 30.
  • the viewing window parameters such as the viewing window area size and aspect ratio (i.e., viewing window width divided by viewing window height) may be under the control of user computer 28.
  • the viewing window area may be no more than 1 60 x 1 20 pixels in size, which is just a portion of the display area of an SVGA display monitor at 800 x 600 pixels.
  • references herein to frame sizes in pixels are intended to include equivalent frame sizes thereto.
  • frame sizes in pixels such as, 320 x 240 pixels, 640 x 480 pixels, etc.
  • frame sizes in pixels are intended to include equivalent frame sizes thereto.
  • the exact pixel count differs from the stated frame size.
  • one equivalent to a 320 x 240 pixel frame size is 352 x 240.
  • references to frame sizes in pixels are intended to included these and other equivalent frame sizes, and the teachings herein include any and all such insubstantial variations.
  • the enhanced digital image file can be generated from a print film image or a digital image.
  • the enhanced digital image file is a digitized image acquired with a digital camera, scanner, or other device suitable for digitizing an image into pixels.
  • the method of FIG. 2 is suitable for processing a print film image; the method of FIG. 6 is suitable for processing a digital image.
  • an image is photographed or recorded by using camera 1 2.
  • camera 1 2 is a video camera
  • the video data is captured using a suitable capture device (e.g., an internal or external capture card, a Dazzle LAV-1000S capture device manufactured by Dazzle, Inc. of Fremont, California, etc.).
  • a suitable capture device e.g., an internal or external capture card, a Dazzle LAV-1000S capture device manufactured by Dazzle, Inc. of Fremont, California, etc.
  • a single captured frame from the video camera may be further processed as a digital image.
  • the image is developed by developing device 14 in order to produce a photographic print, such as a high gloss photographic print.
  • a photographic print such as a high gloss photographic print.
  • the step of developing may not be necessary in all cases (e.g., where the print film image of camera 1 2 is in a suitable format for subsequent enlarging or scanning).
  • the developed image is enlarged by enlarging device 16, if needed.
  • the developed image can be enlarged to sizes of between 8"x6" and 8"x1 2", or to any other appropriate size.
  • the developed image is enlarged to provide additional photo information to scanning device 1 8.
  • the developed image can be enlarged many times before the granularity of the image is visible to the human eye. A photographic enlargement magnification capability of up to 1 700 times or more may be attained for most views or scenes. It is, however, recommended that larger enlargement sizes be obtained for smaller developed images.
  • the step of enlarging may not be necessary in all cases (e.g., where the size of the print film image or developed image is large enough to provide sufficient data to scanning device 1 8).
  • the enlarged image is scanned by scanning device 1 8 in order to generate a bitmap image file or other digital image file, such as, JPEG, GIF, or other files.
  • Scanning should be performed at a scan density that will provide the requisite number of pixels in the resulting digital image file (e.g., 1 00 dpi, 200 dpi, 600 dpi, 1400 dpi, etc.) Contrary to the teachings of the prior art, a large number of pixels are provided in the digital image file such as would be within the particular file size and loading time constraints.
  • a sufficient number of pixels are provided in the enhanced digital image file to allow a user to magnify the digitized image in the viewing window of display 30 by a magnification factor of greater than one without pixelation.
  • a sufficient number of pixels are provided to allow the user to magnify the digitized image by a magnification factor of 1 .5, 5, 10, 20, 100, or more.
  • the number of pixels provided in the enhanced digital image file is based on a viewing window size and the desired magnification ratio.
  • FIG. 7 illustrates the parametric details and relationships between the different images and viewing window sizes. These parameters and description are for the purpose of creating large, clear, zoomable and pannable images from a variety of photographic, source images.
  • a "source image” (si) provides the original source of the graphical image information before it is digitally processed, as opposed to a "target image” (ti) that is the destination image to be transferred to the computer display system.
  • the source image is not yet digitized. In other words, it has not been converted to a bitmapped format.
  • a source image could be a photograph, a handwritten sketch, a computer-generated graphic, etc. In this case, source image is what is fed to the scanning device 1 8.
  • the source image has already been digitized, such as the digital output of a CCD camera taking a photograph.
  • the source image (si) has a source image height (sih) and a source image width (siw) .
  • the viewing window (vw) is the window, defined in pixels, within which the target image, when scaled to fit, is to be displayed as the viewing image (vi).
  • the viewing window (vw) has a viewing window width (vww) and a viewing window height (vwh), both defined in pixels.
  • a subset of pixels from the source image (si) must be selected and scaled.
  • the scaled target image is called the viewing image (vi).
  • the maximum magnification factor (mmf) is defined as the ratio of the target image area (tia) to the viewing image area (via) . This ratio will determine the amount of zoom available without causing the image to distort due to pixelation, i.e., when fewer pixels are in the viewing image being displayed than available in the viewing window.
  • tiw squareroot (tia * sir)
  • a zoom to the maximum level will be shown in the viewing window as illustrated at representation 120 of FIG. 7. By panning the viewing window, every portion of the target image may be viewed from each level of zooming.
  • msd tih/sih.
  • the photo scan can be any scan density > 357 pixels per inch
  • a 5 x 4" print film image should be scanned at greater than 357 pixels per inch to allow magnification/zoom up to 20 times in a viewing window of 320 x 240 pixels.
  • An enhanced digital image file having 2,560,000 pixels provides a sufficient number of pixels for this example.
  • the photo scan can be any scan density > 357 pixels per inch
  • the photo scan can be any scan density > 321 pixels per inch
  • the enhanced digital image file is provided to computer 22 in a digitized format, i.e., pixel-based, bitmapped, etc. (as opposed to vector graphics based format), such as in either in a bitmap BMP format or a compressed JPEG format.
  • Computer 22 performs a touch-up operation on the scanned image in order to make refinements or enhancements thereto. This touch-up operation is accomplished by utilizing imaging software. Touch-up steps may include cleaning the edges of the image, adjusting lighting, adjusting colors, etc.
  • Adobe PhotoShop software manufactured by Adobe Systems Inc., San Jose, California, can be used as the imaging software for touching up the images.
  • multiple images can be stitched together after scanning, and before or after compression, thereby creating a panoramic scene or image, or simply a scene requiring a plurality of photographs.
  • This stitching operation can be performed by utilizing photo stitching software such as, for example, Photo Vista software by Live Picture, Live Picture Reality Studio or Live Picture Object Modeler. Stitching may comprise sufficient photos for a 360 degree panoramic image of a scene. If images are stitched, they may be touched-up at step 60.
  • the image is then converted from a bitmap file format (e.g., BMP) to a compressed file format (e.g., JPEG).
  • BMP bitmap file format
  • JPEG compressed file format
  • Other compression algorithms are contemplated.
  • Adobe Image Ready software is utilized to perform the BMP-to-JPEG file conversion in this exemplary embodiment.
  • the compression is set to a very high compression factor, such as, 70% to 90%, but may alternatively be set to other compression factors.
  • the target image area be set as one of the parameters for compression, thus ensuring an optimum compressed file size.
  • user interface or control data is associated with the enhanced digital image file.
  • the user interface data is a program or code segment (e.g., a Java applet) that provides a graphic user interface on display 30 upon loading of the image.
  • the user interface program is associated with the enhanced digital image file such that the combined file or files can automatically launch the graphic user interface, decompress the digital image data, and display at least a portion of the digital image data within a viewing window having a predetermined viewing size on display 30.
  • the user interface data may alternatively be a plug-in, applet, or other software program, such as, Photo Vista, Reality Studio, or Object Modeler manufactured by Live Picture Inc., San Francisco, California, or an Ipix plug-in manufactured by Internet Pictures Corporation of Oak Ridge, Tennessee.
  • the user interface data may be either associated with the enhanced digital image file such that it is downloaded with the enhanced digital image data, or it may be launched independently from the enhanced digital image data as, for example, an applet or plug-in on user computer 28. If the user interface data is launched independently of the image data, it may either be first opened by the user before downloading the enhanced digital image file, or it may be automatically opened by the enhanced digital image file, such as, via a script or other code segment within the enhanced digital image file.
  • an exemplary screen print 80 from display 30 is shown illustrating the graphical user interface 82 generated by the user interface program.
  • User interface 82 includes a viewing window or frame 84 for displaying the digital image data 86.
  • User interface 82 further includes zoom buttons 88 for allowing the user to zoom into and out of digital image data 86. By actuating one of zoom buttons 88, user interface program resizes digital image data 86 within viewing frame 84.
  • User interface 82 further includes panning buttons 90 to allow the user to pan up, down, left, and right within image data 86.
  • the resulting image is ready for providing to a network server, projection from a projector, display system, posting, or playback, to or from a host computer, a Web server, a Web site, or a Web page.
  • the enhanced digital image is uploaded to a network server.
  • the upload from computer 22 to the respective server can be performed by utilizing file uploading software, such as, Web FTP (file transfer protocol) Pro software, manufactured by Ipswitch, Inc., Lexington, Massachusetts.
  • file uploading software such as, Web FTP (file transfer protocol) Pro software, manufactured by Ipswitch, Inc., Lexington, Massachusetts.
  • digital image data 86 of a collectible stamp image is shown within a viewing window 84.
  • viewing window 84 is slightly smaller than the full-screen size of display 30 (e.g., 640 x 480 pixels in this example), viewing window 84 can alternatively be configured for full-screen display, or display in other sizes or resolutions.
  • digital image data 86 shows no sign of pixelation.
  • a user has actuated zoom buttons 88 to zoom-in to the digital image.
  • the user interface program provides additional digital image data from the enhanced digital image file stored in a memory (e.g., a hard drive) of user computer 28, to provide a zoomed view of the digital image.
  • a memory e.g., a hard drive
  • FIG. 5 a user has actuated pan buttons 90 to display the lower left-hand corner of the digital image data within viewing window 84.
  • the user has also actuated zoom buttons 88 to zoom-in to the digital image data. Again, little pixelation is visible.
  • the principles described herein are also operable with a digital image taken by a digital camera.
  • a method 100 of providing an enhanced digital image file utilizing a digital camera is shown.
  • the digital camera is configured to acquire a digital image.
  • the camera is set with a high resolution to acquire at least enough pixels for a magnification of two times the size of the viewing window provided on display 30, though higher numbers of pixel data may also be acquired.
  • Source Image 1600 x 1200 pixels
  • Desired Magnification Factor 20
  • Steps 1 04 touch-up image
  • 1 06 compress file
  • 1 08 associate user interface data
  • 1 1 0 upload file
  • the above method can be repeated using different depth images or digital photographs for the images in order to create areas of higher resolution or "hot spots" within an image for detailed close-up inspection or viewing. These depth images can be linked to the respective image or image segment.
  • the above method can be utilized in order to create higher zoom capabilities with each new depth layer of an image.
  • the above method can be utilized for applications including single images, single panoramic images, stitched images, non-stitched images or any other suitable image type.
  • the system and method of the present invention can also be utilized in conjunction with three-dimensional images in order to produce high resolution, three-dimensional digital images and 3-D texturings.
  • the resulting images which are obtained via the exemplary system and method are characterized by a high definition resolution and are suitable for high definition television, Web television, and large, panoramic or object models, Internet applications, which preserve resolution upon image magnification or reduction.
  • the exemplary embodiment also dispenses with the need for plug-in software during download or file transfer operations.
  • a digital camera was used to take several digital images.
  • a Hasselblad camera was used to take several print film images, some of which were 2 % " square and others of which were 4 x 5" square. The print film images were taken to a film developing center to be enlarged to 8 x 1 2" pictures.
  • a method is disclosed of providing a digital image file for viewing in a viewing window of a user display, the viewing window having a predetermined size.
  • the method includes providing a digital image having an image size comprising a fixed number of pixels representative of an image, the image size being greater than the predetermined viewing window size.
  • the digital image file is associated with a user interface that is configured to display the digital image in the viewing window and to allow a user to zoom into and pan around in the image displayed in the viewing window while maintaining high image quality.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Editing Of Facsimile Originals (AREA)
  • Digital Computer Display Output (AREA)
  • Processing Or Creating Images (AREA)

Abstract

Cette invention concerne un procédé d"obtention de fichier pour images numériques qui permet de visionner une image dans une fenêtre d"écran de taille déterminée. Ce procédé consiste à utiliser une image numérique dont la taille est donnée par un nombre fixe de pixels représentatifs de ladite image, la taille de l"image étant supérieure à celle de la fenêtre de visionnement. Le fichier pour images numériques est associé à une interface utilisateur qui permet à l"utilisateur d"afficher l"image numérique dans la fenêtre de visionnement et de resserrer ou d"élargir le champ de l"image affichée dans la fenêtre sans nuire à la qualité de l"image.
EP00955352A 1999-08-02 2000-08-02 Obtention d'un fichier ameliore pour images numeriques Withdrawn EP1200935A1 (fr)

Applications Claiming Priority (11)

Application Number Priority Date Filing Date Title
US14672699P 1999-08-02 1999-08-02
US146726P 1999-08-02
US14973799P 1999-08-19 1999-08-19
US149737P 1999-08-19
US15540499P 1999-09-22 1999-09-22
US155404P 1999-09-22
US16955999P 1999-12-08 1999-12-08
US169559P 1999-12-08
US52272100A 2000-03-10 2000-03-10
US522721 2000-03-10
PCT/US2000/021211 WO2001009836A1 (fr) 1999-08-02 2000-08-02 Obtention d"un fichier ameliore pour images numeriques

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EP1200935A1 true EP1200935A1 (fr) 2002-05-02

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JP (1) JP2003527655A (fr)
AU (1) AU6757000A (fr)
WO (1) WO2001009836A1 (fr)

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