[go: up one dir, main page]
More Web Proxy on the site http://driver.im/

CA2236943A1 - Storage and retrieval of large digital images - Google Patents

Storage and retrieval of large digital images

Info

Publication number
CA2236943A1
CA2236943A1 CA 2236943 CA2236943A CA2236943A1 CA 2236943 A1 CA2236943 A1 CA 2236943A1 CA 2236943 CA2236943 CA 2236943 CA 2236943 A CA2236943 A CA 2236943A CA 2236943 A1 CA2236943 A1 CA 2236943A1
Authority
CA
Canada
Prior art keywords
dwt
image
compression
stored
seamless
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.)
Granted
Application number
CA 2236943
Other languages
French (fr)
Other versions
CA2236943C (en
Inventor
Jonathan N. Bradley
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.)
University of California San Diego UCSD
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
Priority claimed from US08/557,475 external-priority patent/US5710835A/en
Application filed by Individual filed Critical Individual
Publication of CA2236943A1 publication Critical patent/CA2236943A1/en
Application granted granted Critical
Publication of CA2236943C publication Critical patent/CA2236943C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Compression Of Band Width Or Redundancy In Fax (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Processing Or Creating Images (AREA)

Abstract

Image compression and viewing are implemented. A DWT-based compression method uses a two-level memory computer. The viewing method selects image areas in compressed form at multiple resolutions. For compression, a plurality of discrete tile image subsets (118) is defined which form the complete image. Seamless wavelet--based image compression occurs by in-putting the tiles in a selected sequence to a DWT (120) routine. The resulting DWT coefficients are stored in a first primary memory and periodically are compressed (128) and stored in a secondary memory (124). The sequence of DWT operations on the tiles effectively calculates a seamless DWT of the image. Data retrieval occurs by specifying a resolution and a region of the image for display (146). The subset of stored DWT coefficients corresponding to each requested scene is determined and then decompressed for input to an inverse DWT (164) to form the display (166). Interaction (168) may occur with a pointing device on previous retrieved displays.
CA 2236943 1995-11-14 1996-10-28 Storage and retrieval of large digital images Expired - Lifetime CA2236943C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/557,475 US5710835A (en) 1995-11-14 1995-11-14 Storage and retrieval of large digital images
US08/557,475 1995-11-14
PCT/US1996/017267 WO1997018527A1 (en) 1995-11-14 1996-10-28 Storage and retrieval of large digital images

Publications (2)

Publication Number Publication Date
CA2236943A1 true CA2236943A1 (en) 1997-05-22
CA2236943C CA2236943C (en) 2008-02-12

Family

ID=29406033

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2236943 Expired - Lifetime CA2236943C (en) 1995-11-14 1996-10-28 Storage and retrieval of large digital images

Country Status (1)

Country Link
CA (1) CA2236943C (en)

Also Published As

Publication number Publication date
CA2236943C (en) 2008-02-12

Similar Documents

Publication Publication Date Title
EP0072117B1 (en) Method and apparatus for transmitting an image
US5613051A (en) Remote image exploitation display system and method
CN1079182C (en) Television signal transmitting, receiving method and device and transmitting/receiving method and device
US6144770A (en) Motion detection method and apparatus
US5465119A (en) Pixel interlacing apparatus and method
US8290346B2 (en) Large format video archival, storage, and retrieval system and method
US5307055A (en) Display control device incorporating an auxiliary display
US5517588A (en) Digital data conversion equipment and a method for the same
JP2006501522A5 (en)
CN1326574A (en) Method and apparatus for resizing and zooming an image by operating directly on a digital transform of the image
EP0758512A1 (en) Pcmcia video card
US7248262B2 (en) Process and data structure for providing required resolution of data transmitted through a communications link of given bandwidth
JPH09107464A (en) Scaling method of picture to be given in compressed data form
US5148292A (en) Apparatus for effectively compressing video data representing a relatively simple image having strong area correlation
CA2081140A1 (en) Digital video compression method and apparatus
CN101415119B (en) Device and method for compressing image data
JPH10112862A (en) Digital data processing method
US4992868A (en) True information television (TITV) and vision system
JPS59205881A (en) Electronic still memory system
CA2236943A1 (en) Storage and retrieval of large digital images
CN1277697A (en) Method and apparatus for mapping a digital versatile Disk (DVD) image onto high resolution computer display device
CN1113634A (en) Device for processing vision signal of wide visual angle television
EP0340853A1 (en) Television transmission system using transmission of basic picture weighting factors
KR100840379B1 (en) Display Driver able to storage many pages of image data and Method for reproducing the image data
CN101287057A (en) Buffer saving image decompressing storing method and module thereof

Legal Events

Date Code Title Description
EEER Examination request
MKEX Expiry

Effective date: 20161028