JP2007521573A - 事前に計算されたサンプルをモザイキングすることでフィルムグレインをシミュレートするための方法 - Google Patents
事前に計算されたサンプルをモザイキングすることでフィルムグレインをシミュレートするための方法 Download PDFInfo
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- 238000002156 mixing Methods 0.000 claims description 10
- 230000001131 transforming effect Effects 0.000 claims 2
- 230000002238 attenuated effect Effects 0.000 claims 1
- 238000004088 simulation Methods 0.000 description 10
- 230000006835 compression Effects 0.000 description 5
- 238000007906 compression Methods 0.000 description 5
- 238000001914 filtration Methods 0.000 description 5
- 238000007796 conventional method Methods 0.000 description 4
- 238000000354 decomposition reaction Methods 0.000 description 3
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- 230000000153 supplemental effect Effects 0.000 description 2
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- 238000005282 brightening Methods 0.000 description 1
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- 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
- H04N19/70—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by syntax aspects related to video coding, e.g. related to compression standards
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- 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
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- 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
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- 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 using non-spatial domain filtering
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- 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
- H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
- H04N19/169—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding
- H04N19/17—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object
- H04N19/176—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object the region being a block, e.g. a macroblock
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- 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
- H04N19/20—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using video object coding
- H04N19/23—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using video object coding with coding of regions that are present throughout a whole video segment, e.g. sprites, background or mosaic
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/46—Embedding additional information in the video signal during the compression process
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- 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
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- 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
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- G—PHYSICS
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- G06T2207/00—Indexing scheme for image analysis or image enhancement
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- G06T2207/20—Special algorithmic details
- G06T2207/20048—Transform domain processing
- G06T2207/20052—Discrete cosine transform [DCT]
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- G—PHYSICS
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- G06T2207/00—Indexing scheme for image analysis or image enhancement
- G06T2207/20—Special algorithmic details
- G06T2207/20172—Image enhancement details
- G06T2207/20204—Removing film grain; Adding simulated film grain
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- 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
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- Decoration By Transfer Pictures (AREA)
Abstract
Description
Claims (14)
- 入力画像ブロックにおけるフィルムグレインをシミュレートする方法であって、
ブロックのための少なくとも1つの画像パラメータの平均値を計算するステップと、
その画像パラメータが前記入力画像ブロックの画像パラメータに最も密に整合するフィルムグレインブロックの少なくとも1つの前に確立されたプールからフィルムグレインブロックを選択するステップと、
選択されたフィルムグレインブロックを入力画像ブロックと混合するステップと、
を含むことを特徴とする方法。 - 前記入力画像ブロックとの混合の前に、前記選択されたフィルムグレインブロックをデブロックするステップを更に含む、
請求項1記載の方法。 - 前記前に確立されたフィルムグレインブロックは、画像の強度に基づいて少なくとも1つのプールで編成される、
請求項1記載の方法。 - 前記入力画像の特性に従って少なくとも1つのプールを更新するステップを更に含む、
請求項1記載の方法。 - 異なるフィルムグレインブロックは、異なる色成分の少なくとも1つについて選択される、
請求項3記載の方法。 - 前記混合するステップの前に選択されたブロックを変換するステップを更に含む、
請求項1記載の方法。 - 複数のフィルムグレインブロックのプールからフィルムグレインブロックを選択するステップを更に含む、
請求項1記載の方法。 - フィルムグレインが少なくとも減衰され、入力画像ブロックに分解される、入力画像におけるフィルムグレインをシミュレートする方法であって、
(a)入力画像ブロックのセットの連続するブロックを選択するステップと、
(b)前記連続するブロックについて少なくとも1つの画像パラメータの平均値を計算するステップと、
(c)前に確立されたフィルムグレインブロックの少なくとも1つのプールのうちから、前記連続するブロックの少なくとも1つの画像パラメータの平均値に最も密に整合する画像パラメータを有するフィルムグレインブロックを選択するステップと、
(d)前記画像における全ての画素ブロックについて、前記ステップ(a)〜(c)を繰り返すステップと、
(e)出力画像を生成するために前記選択されたフィルムグレインブロックをフィルムグレインと混合するステップと、
を含むことを特徴とする方法。 - 前記前に確立されたフィルムグレインのブロックは、画像の強度に基づいて少なくとも1つのプールで編成される、
請求項8記載の方法。 - 前記入力画像の特性に従って事前に確立されたフィルムグレインブロックの少なくとも1つのプールを更新するステップを更に含む、
請求項8記載の方法。 - 異なるフィルムグレインブロックは、異なる色成分の少なくとも1つについて選択される、
請求項8記載の方法。 - 前記ステップ(c)〜(d)を繰り返す前に、前記選択されたブロックを変換するステップを更に含む、
請求項7記載の方法。 - 複数のフィルムグレインブロックのプールからフィルムグレインブロックを選択するステップを更に含む、
請求項8記載の方法。 - 前記ステップ(c)〜(d)を繰り返す前に、連続するフィルムグレインブロックをデブロックするステップを更に含む、
請求項8記載の方法。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US50514603P | 2003-09-23 | 2003-09-23 | |
US60/505,146 | 2003-09-23 | ||
PCT/US2004/029410 WO2005034518A1 (en) | 2003-09-23 | 2004-09-10 | Method for simulating film grain by mosaicing pre-computed samples |
Publications (2)
Publication Number | Publication Date |
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JP2007521573A true JP2007521573A (ja) | 2007-08-02 |
JP5100121B2 JP5100121B2 (ja) | 2012-12-19 |
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JP2006528037A Expired - Fee Related JP5100121B2 (ja) | 2003-09-23 | 2004-09-10 | 事前に計算されたサンプルをモザイキングすることでフィルムグレインをシミュレートするための方法 |
Country Status (12)
Country | Link |
---|---|
US (1) | US7945106B2 (ja) |
EP (1) | EP1676445B1 (ja) |
JP (1) | JP5100121B2 (ja) |
KR (1) | KR100993990B1 (ja) |
CN (1) | CN1857006B (ja) |
AU (1) | AU2004306386B2 (ja) |
BR (1) | BRPI0414641B1 (ja) |
CA (1) | CA2538785C (ja) |
HK (1) | HK1093643A1 (ja) |
RU (1) | RU2340943C2 (ja) |
WO (1) | WO2005034518A1 (ja) |
ZA (1) | ZA200602350B (ja) |
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US9117261B2 (en) | 2004-11-16 | 2015-08-25 | Thomson Licensing | Film grain SEI message insertion for bit-accurate simulation in a video system |
US9177364B2 (en) | 2004-11-16 | 2015-11-03 | Thomson Licensing | Film grain simulation method based on pre-computed transform coefficients |
US9098916B2 (en) | 2004-11-17 | 2015-08-04 | Thomson Licensing | Bit-accurate film grain simulation method based on pre-computed transformed coefficients |
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US8472526B2 (en) | 2004-11-23 | 2013-06-25 | Thomson Licensing | Low-complexity film grain simulation technique |
Also Published As
Publication number | Publication date |
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CA2538785A1 (en) | 2005-04-14 |
KR20060135612A (ko) | 2006-12-29 |
EP1676445A1 (en) | 2006-07-05 |
US20070058878A1 (en) | 2007-03-15 |
JP5100121B2 (ja) | 2012-12-19 |
HK1093643A1 (en) | 2007-03-02 |
BRPI0414641A (pt) | 2006-11-21 |
CN1857006B (zh) | 2011-06-08 |
BRPI0414641B1 (pt) | 2019-01-08 |
RU2340943C2 (ru) | 2008-12-10 |
US7945106B2 (en) | 2011-05-17 |
CN1857006A (zh) | 2006-11-01 |
CA2538785C (en) | 2013-10-29 |
AU2004306386A1 (en) | 2005-04-14 |
RU2006113606A (ru) | 2007-11-20 |
ZA200602350B (en) | 2007-09-26 |
AU2004306386B2 (en) | 2009-10-29 |
EP1676445B1 (en) | 2019-09-04 |
KR100993990B1 (ko) | 2010-11-11 |
WO2005034518A1 (en) | 2005-04-14 |
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