WO2007089803A3 - Methods and apparatus for edge-based spatio-temporal filtering - Google Patents

Methods and apparatus for edge-based spatio-temporal filtering Download PDF

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Publication number
WO2007089803A3
WO2007089803A3 PCT/US2007/002578 US2007002578W WO2007089803A3 WO 2007089803 A3 WO2007089803 A3 WO 2007089803A3 US 2007002578 W US2007002578 W US 2007002578W WO 2007089803 A3 WO2007089803 A3 WO 2007089803A3
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WO
WIPO (PCT)
Prior art keywords
filtering
filter
picture
temporal
edge
Prior art date
Application number
PCT/US2007/002578
Other languages
French (fr)
Other versions
WO2007089803A2 (en
Inventor
Alexandros Michael Tourapis
Jill Macdonald Boyce
Original Assignee
Thomson Licensing
Alexandros Michael Tourapis
Jill Macdonald Boyce
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 Thomson Licensing, Alexandros Michael Tourapis, Jill Macdonald Boyce filed Critical Thomson Licensing
Priority to JP2008552501A priority Critical patent/JP5160451B2/en
Priority to BRPI0707346-1A priority patent/BRPI0707346A2/en
Priority to CN2007800039940A priority patent/CN101379827B/en
Priority to EP07709894.5A priority patent/EP1980109B1/en
Priority to US12/223,051 priority patent/US8135234B2/en
Publication of WO2007089803A2 publication Critical patent/WO2007089803A2/en
Publication of WO2007089803A3 publication Critical patent/WO2007089803A3/en

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Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T5/00—Image enhancement or restoration
    • G06T5/70—Denoising; Smoothing
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T5/00—Image enhancement or restoration
    • G06T5/50—Image enhancement or restoration using two or more images, e.g. averaging or subtraction
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • G06T7/10—Segmentation; Edge detection
    • G06T7/13—Edge detection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/50—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding
    • H04N19/503—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving temporal prediction
    • H04N19/51—Motion estimation or motion compensation
    • H04N19/577—Motion compensation with bidirectional frame interpolation, i.e. using B-pictures
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/50—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding
    • H04N19/59—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving spatial sub-sampling or interpolation, e.g. alteration of picture size or resolution
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/80—Details of filtering operations specially adapted for video compression, e.g. for pixel interpolation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/85—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using pre-processing or post-processing specially adapted for video compression
    • H04N19/86—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using pre-processing or post-processing specially adapted for video compression involving reduction of coding artifacts, e.g. of blockiness
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/10—Image acquisition modality
    • G06T2207/10016—Video; Image sequence
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/20—Special algorithmic details
    • G06T2207/20004—Adaptive image processing
    • G06T2207/20012—Locally adaptive
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/20—Special algorithmic details
    • G06T2207/20172—Image enhancement details
    • G06T2207/20182—Noise reduction or smoothing in the temporal domain; Spatio-temporal filtering
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/60—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding
    • H04N19/61—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding in combination with predictive coding
    • H04N19/615—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding in combination with predictive coding using motion compensated temporal filtering [MCTF]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/60—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding
    • H04N19/63—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding using sub-band based transform, e.g. wavelets
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/01—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level
    • H04N7/0135—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level involving interpolation processes
    • H04N7/0142—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level involving interpolation processes the interpolation being edge adaptive

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Picture Signal Circuits (AREA)
  • Image Processing (AREA)

Abstract

There are provided methods and apparatus for edge-based spatio-temporal filtering. An apparatus for filtering a sequence of pictures includes a spatial filter (110, 190), a motion compensator (130), a deblocking filter (140), and a temporal filter (150). The spatial filter (110, 190) is for spatially filtering a picture in the sequence and at least one reference picture selected from among previous pictures and subsequent pictures in the sequence with respect to the picture. The motion compensator (130), in signal communication with the spatial filter, is for forming, subsequent to spatial filtering, multiple temporal predictions for the picture from the at least one reference picture. The deblocking filter (140), in signal communication with the motion compensator, is for deblock filtering the multiple temporal predictions. The temporal filter (150), in signal communication with the deblocking filter, is for temporally filtering the multiple temporal predictions and combining the multiple temporal predictions to generate a noise reduced version of the picture.
PCT/US2007/002578 2006-01-31 2007-01-30 Methods and apparatus for edge-based spatio-temporal filtering WO2007089803A2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP2008552501A JP5160451B2 (en) 2006-01-31 2007-01-30 Edge-based spatio-temporal filtering method and apparatus
BRPI0707346-1A BRPI0707346A2 (en) 2006-01-31 2007-01-30 methods and apparatus for edge-based spatiotemporal filtration
CN2007800039940A CN101379827B (en) 2006-01-31 2007-01-30 Methods and apparatus for edge-based spatio-temporal filtering
EP07709894.5A EP1980109B1 (en) 2006-01-31 2007-01-30 Methods and apparatus for edge-based spatio-temporal filtering
US12/223,051 US8135234B2 (en) 2006-01-31 2007-01-30 Method and apparatus for edge-based spatio-temporal filtering

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US76425206P 2006-01-31 2006-01-31
US60/764,252 2006-01-31

Publications (2)

Publication Number Publication Date
WO2007089803A2 WO2007089803A2 (en) 2007-08-09
WO2007089803A3 true WO2007089803A3 (en) 2007-10-11

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PCT/US2007/002578 WO2007089803A2 (en) 2006-01-31 2007-01-30 Methods and apparatus for edge-based spatio-temporal filtering

Country Status (6)

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US (1) US8135234B2 (en)
EP (1) EP1980109B1 (en)
JP (1) JP5160451B2 (en)
CN (1) CN101379827B (en)
BR (1) BRPI0707346A2 (en)
WO (1) WO2007089803A2 (en)

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Also Published As

Publication number Publication date
JP2009525639A (en) 2009-07-09
US20100220939A1 (en) 2010-09-02
EP1980109A2 (en) 2008-10-15
CN101379827A (en) 2009-03-04
CN101379827B (en) 2011-07-06
JP5160451B2 (en) 2013-03-13
EP1980109B1 (en) 2018-07-11
WO2007089803A2 (en) 2007-08-09
BRPI0707346A2 (en) 2011-05-03
US8135234B2 (en) 2012-03-13

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