Adaptive Blocking Artifacts Reduction Using Adaptive Filter and Dithering(Special Section on Papers Selected from ITC-CSCC 2001)

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概要

• 論文の詳細を見る

• This paper proposes a new blocking artifact reduction algorithm using an adaptive filter based on classifying the block boundary area. Generally, block-based coding, such as JPEG and MPEG, introduces blocking and ringing artifacts to an image, where the blocking artifact consists of grid noise, staircase noise, and corner outliers. In the proposed method, staircase noise and corner outliers are reduced by a 1D low-pass filter. Next, the block boundaries are divided into two classes based on the gradient of the pixel intensity in the boundary region. For each class, an adaptive filter is applied so that the grid noise is reduced in the block boundary regions. Thereafter, for those blocks with an edge component, the ringing artifact is removed by applying an adaptive filter around the edge. Finally, high frequency components are added to those block boundaries where the natural characteristics have been lost due to the adaptive filter. The computer simulation results confirmed a better performance by the proposed method in both the subjective and objective image qualities.

• 社団法人電子情報通信学会の論文
• 2002-06-01

著者

• Lee Jong-won

  School Of Electrical Engineering And Computer Science Kyungpook National University

• Lee Jong-won

  School Of Electronic And Electrical Engineering Kyungpook National University

• LEE Kuhn-Il

  School of Electrical Engineering and Computer Science, Kyungpook National University

• Lee Kuhn-il

  School Of Electrical Engineering And Computer Science Kyungpook National University

• Lee Kuhn-il

  School Of Electronic And Electrical Engineering Kyungpook National University

• PARK Kyung-Nam

  School of Electronic and Electrical Engineering, Kyungpook National University

• LEE Gun-Woo

  School of Electronic and Electrical Engineering, Kyungpook National University

• SUK Jung-Youp

  School of Electronic and Electrical Engineering, Kyungpook National University

• Lee Gun-woo

  School Of Electronic And Electrical Engineering Kyungpook National University

• Suk Jung-youp

  School Of Electronic And Electrical Engineering Kyungpook National University

• Park Kyung-nam

  Division Of Information Science Korea Nazarene University

• Park Kyung-nam

  School Of Electronic And Electrical Engineering Kyungpook National University

関連論文

• Deblocking Algorithm for Block-Based Coded Images Using Singularity Detection from Multiscale Edges (Image)
• Spatial Error Concealment Algorithm Using Novel Block Classification with a Variable Operating Region(Special Section on Papers Selected from ITC-CSCC 2002)
• Adaptive Postprocessing Algorithm in Block-Coded Images Using Block Classification and MLP
• Postprocessing Algorithm in Block-Coded Images Using the Adaptive Filters along the Pattern of Neighborhood Blocks(Regular Section)
• Blocking Artifact Reduction in Block-Coded Image Using Block Classification and Feedforward Neural Network(Digital Signal Processing)
• Complex EGI Based 3D-Mesh Watermarking(Papers Selected from ITC-CSCC 2004)
• Motion Estimation with Optical Flow-Based Adaptive Search Region(Special Section on Papers Selected from ITC-CSCC 2000)
• Adaptive Blocking Artifacts Reduction Using Adaptive Filter and Dithering(Special Section on Papers Selected from ITC-CSCC 2001)
• Multispectral Image Data Compression Using Classified Prediction and KLT in Wavelet Transform Domain(Special Section on Papers Selected from ITC-CSCC 2002)

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