BR9811111A - Processo de filtragem adaptativo de sinal, filtro adaptativo de sinal e mecanismo de leitura por computador para armazenagem de programa para o mesmo - Google Patents

Processo de filtragem adaptativo de sinal, filtro adaptativo de sinal e mecanismo de leitura por computador para armazenagem de programa para o mesmo

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Publication number
BR9811111A
BR9811111A BR9811111A BR9811111A BR9811111A BR 9811111 A BR9811111 A BR 9811111A BR 9811111 A BR9811111 A BR 9811111A BR 9811111 A BR9811111 A BR 9811111A BR 9811111 A BR9811111 A BR 9811111A
Authority
BR
Brazil
Prior art keywords
adaptive signal
filtering process
image
call
blocking
Prior art date
Application number
BR9811111A
Other languages
English (en)
Inventor
Yung-Lyul Lee
Hyun-Wook Park
Original Assignee
Samsung Electronics Co Ltd
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 Samsung Electronics Co Ltd filed Critical Samsung Electronics Co Ltd
Priority to BRPI9816272A priority Critical patent/BRPI9816272B1/pt
Publication of BR9811111A publication Critical patent/BR9811111A/pt

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    • 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
    • H04N19/102—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or selection affected or controlled by the adaptive coding
    • H04N19/117—Filters, e.g. for pre-processing or post-processing
    • 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
    • H—ELECTRICITY
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    • G—PHYSICS
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    • G—PHYSICS
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    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
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    • G06T5/10—Image enhancement or restoration using non-spatial domain filtering
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    • 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
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    • 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
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    • 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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    • 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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    • 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
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    • 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
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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computing Systems (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Picture Signal Circuits (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)

Abstract

PROCESSO DE FILTRAGEM ADAPTATIVO DE SINAL, FILTRO ADAPTATIVO DE SINAL E MECANISMO DE LEITURA POR COMPUTADOR PARA ARMAZENAGEM DE PROGRAMA PARA O MESMO Processo de filtragem adaptativo de sinal para redução de efeito de bloqueio e ruído de chamada, um filtro adaptativo de sinal, e um mecanismo de leitura por computador. O processo de filtragem adaptativo de sinal capaz de reduzir o efeito de bloqueio e ruído de chamada do dado de imagem quando um quadro é composto de blocos de um tamanho pré-determinado inclui as etapas de: (a) geração de informação de bloqueio para redução do efeito de bloqueio e informação de chamada para redução do ruído de chamada, a partir de coeficientes de pixéis pré-determinados das regiões de limite superior e esquerdo do bloco de dados quando um quadro obtido pela des-construção de um dado de imagem de fluxo de bits por quantização inversa for um quadro intra; e (b) filtragem de forma adaptativa do quadro de imagem passado através de quantização inversa e transformada inversa discreta de coseno de acordo com as informações de bloqueio e chamada geradas. Portanto, o efeito de bloqueio e ruído de chamada podem ser eliminados da imagem restaurada a partir da imagem baseada em bloco, acentuando assim a imagem restaurada a partir da compressão.
BR9811111A 1997-07-16 1998-06-18 Processo de filtragem adaptativo de sinal, filtro adaptativo de sinal e mecanismo de leitura por computador para armazenagem de programa para o mesmo BR9811111A (pt)

Priority Applications (1)

Application Number Priority Date Filing Date Title
BRPI9816272A BRPI9816272B1 (pt) 1997-07-16 1998-06-18 processo de filtragem adaptativo de sinal, processo de filtragem de dado de imagem, e aparelho de filtragem de dado de imagem

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1019970033253A KR100243225B1 (ko) 1997-07-16 1997-07-16 블록화효과 및 링잉잡음 감소를 위한 신호적응필터링방법 및신호적응필터
PCT/KR1998/000169 WO1999004497A2 (en) 1997-07-16 1998-06-18 Signal adaptive filtering method, signal adaptive filter and computer readable medium for storing program therefor

Publications (1)

Publication Number Publication Date
BR9811111A true BR9811111A (pt) 2000-09-05

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BRPI9816269-1A BR9816269B1 (pt) 1997-07-16 1998-06-18 processo de filtragem de dado de imagem.
BR9811111A BR9811111A (pt) 1997-07-16 1998-06-18 Processo de filtragem adaptativo de sinal, filtro adaptativo de sinal e mecanismo de leitura por computador para armazenagem de programa para o mesmo
BRPI9816272A BRPI9816272B1 (pt) 1997-07-16 1998-06-18 processo de filtragem adaptativo de sinal, processo de filtragem de dado de imagem, e aparelho de filtragem de dado de imagem

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BRPI9816269-1A BR9816269B1 (pt) 1997-07-16 1998-06-18 processo de filtragem de dado de imagem.

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BRPI9816272A BRPI9816272B1 (pt) 1997-07-16 1998-06-18 processo de filtragem adaptativo de sinal, processo de filtragem de dado de imagem, e aparelho de filtragem de dado de imagem

Country Status (13)

Country Link
US (12) US6631162B1 (pt)
EP (8) EP1335608A3 (pt)
JP (4) JP3590351B2 (pt)
KR (1) KR100243225B1 (pt)
CN (6) CN1160668C (pt)
AU (1) AU725691B2 (pt)
BR (3) BR9816269B1 (pt)
CA (3) CA2830878C (pt)
DE (1) DE19882541T1 (pt)
ES (5) ES2328439B2 (pt)
GB (1) GB2342803B (pt)
RU (4) RU2262210C2 (pt)
WO (1) WO1999004497A2 (pt)

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