JP4041683B2 - 圧縮された画像の画質の向上 - Google Patents

圧縮された画像の画質の向上 Download PDF

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Publication number
JP4041683B2
JP4041683B2 JP2002081403A JP2002081403A JP4041683B2 JP 4041683 B2 JP4041683 B2 JP 4041683B2 JP 2002081403 A JP2002081403 A JP 2002081403A JP 2002081403 A JP2002081403 A JP 2002081403A JP 4041683 B2 JP4041683 B2 JP 4041683B2
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wavelet
coefficients
transform
quantization noise
coefficient
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Japanese (ja)
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JP2003046785A (ja
Inventor
バークナー キャサリン
ゴーミッシュ マイケル
エル．シュワルツ エドワード
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Ricoh Co Ltd
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Ricoh Co Ltd
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    • G06T5/70—
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T5/00—Image enhancement or restoration
    • G06T5/10—Image enhancement or restoration by non-spatial domain filtering
    • G06T5/73—
    • 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
    • H04N19/48—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using compressed domain processing techniques other than decoding, e.g. modification of transform coefficients, variable length coding [VLC] data or run-length data
    • 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
    • H04N19/527—Global motion vector estimation
    • 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
    • H04N19/635—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding using sub-band based transform, e.g. wavelets characterised by filter definition or implementation details
    • 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
    • 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
    • H04N19/90—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using coding techniques not provided for in groups H04N19/10-H04N19/85, e.g. fractals
    • 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
    • G06T2207/20048—Transform domain processing
    • G06T2207/20064—Wavelet transform [DWT]
JP2002081403A 2001-07-31 2002-03-22 圧縮された画像の画質の向上 Expired - Fee Related JP4041683B2 (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US920003 1986-10-17
US09/920,003 US7206459B2 (en) 2001-07-31 2001-07-31 Enhancement of compressed images

Related Child Applications (1)

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JP2006322565A Division JP4714668B2 (ja) 2001-07-31 2006-10-30 圧縮された画像の画質の向上

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JP2003046785A JP2003046785A (ja) 2003-02-14
JP4041683B2 true JP4041683B2 (ja) 2008-01-30

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EP (1) EP1282075A3 (US20030086623A1-20030508-M00009.png)
JP (2) JP4041683B2 (US20030086623A1-20030508-M00009.png)

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EP1282075A3 (en) 2003-02-12
JP2003046785A (ja) 2003-02-14
JP2007116728A (ja) 2007-05-10
US20070160304A1 (en) 2007-07-12
US7206459B2 (en) 2007-04-17
US20030086623A1 (en) 2003-05-08
US7957599B2 (en) 2011-06-07
JP4714668B2 (ja) 2011-06-29
EP1282075A2 (en) 2003-02-05

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