WO1990016035A3 - Digital image interpolator - Google Patents

Digital image interpolator Download PDF

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Publication number
WO1990016035A3
WO1990016035A3 PCT/US1990/003372 US9003372W WO9016035A3 WO 1990016035 A3 WO1990016035 A3 WO 1990016035A3 US 9003372 W US9003372 W US 9003372W WO 9016035 A3 WO9016035 A3 WO 9016035A3
Authority
WO
WIPO (PCT)
Prior art keywords
interpolator
pixel values
interpolation
digital image
row
Prior art date
Application number
PCT/US1990/003372
Other languages
French (fr)
Other versions
WO1990016035A2 (en
Inventor
Richard Kerr
Robert Krogstad
Original Assignee
Eastman Kodak Co
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 Eastman Kodak Co filed Critical Eastman Kodak Co
Priority to DE69028075T priority Critical patent/DE69028075T2/en
Priority to EP90910043A priority patent/EP0429634B1/en
Publication of WO1990016035A2 publication Critical patent/WO1990016035A2/en
Publication of WO1990016035A3 publication Critical patent/WO1990016035A3/en

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T3/00—Geometric image transformation in the plane of the image
    • G06T3/40—Scaling the whole image or part thereof
    • G06T3/4007—Interpolation-based scaling, e.g. bilinear interpolation
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F17/00—Digital computing or data processing equipment or methods, specially adapted for specific functions
    • G06F17/10—Complex mathematical operations
    • G06F17/17—Function evaluation by approximation methods, e.g. inter- or extrapolation, smoothing, least mean square method
    • G06F17/175—Function evaluation by approximation methods, e.g. inter- or extrapolation, smoothing, least mean square method of multidimensional data
    • G06T3/10—

Abstract

An interpolator for enlarging or reducing a digital image includes an interpolation coefficient memory containing interpolation coefficients representing a one dimension interpolation kernel. A row interpolator receives image pixel values, retrieves interpolation coefficients from the memory, and produces interpolated pixel values by interpolating in a row direction. A column interpolator receives multiple rows of interpolated pixel values from the row interpolator, retrieves interpolation coefficients from the memory, and produces rows of interpolated pixel values by interpolating in a column direction.
PCT/US1990/003372 1989-06-16 1990-06-13 Digital image interpolator WO1990016035A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE69028075T DE69028075T2 (en) 1989-06-16 1990-06-13 DIGITAL IMAGE INTERPOLATOR
EP90910043A EP0429634B1 (en) 1989-06-16 1990-06-13 Digital image interpolator

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US36716889A 1989-06-16 1989-06-16
US367,168 1989-06-16

Publications (2)

Publication Number Publication Date
WO1990016035A2 WO1990016035A2 (en) 1990-12-27
WO1990016035A3 true WO1990016035A3 (en) 1991-01-24

Family

ID=23446172

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1990/003372 WO1990016035A2 (en) 1989-06-16 1990-06-13 Digital image interpolator

Country Status (5)

Country Link
US (1) US5125042A (en)
EP (1) EP0429634B1 (en)
JP (1) JPH04500419A (en)
DE (1) DE69028075T2 (en)
WO (1) WO1990016035A2 (en)

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US20100054621A1 (en) * 2008-08-26 2010-03-04 Qualcomm Incorporated Dual lookup table design for edge-directed image scaling
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Also Published As

Publication number Publication date
EP0429634B1 (en) 1996-08-14
EP0429634A1 (en) 1991-06-05
US5125042A (en) 1992-06-23
WO1990016035A2 (en) 1990-12-27
DE69028075D1 (en) 1996-09-19
DE69028075T2 (en) 1997-03-13
JPH04500419A (en) 1992-01-23

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