Estimation of Mosquito Noise Level from Decoded Picture

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概要

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• With DCT coding, block artifact and mosquito noise degradations appear in decoded pictures. The control of post filtering is important to reduce degradations without causing side effects. Decoding information is useful, if the filter is inside or close to the encoder; however, it is difficult to control with independent post filtering, such as in a display. In this case, control requires the estimation of the artifact from only the decoded picture. In this work, we describe an estimation method that determines the mosquito noise block and level. In this method, the ratio of spatial activity is taken between the mosquito block and the neighboring flat block. We test the proposed method using the reconstructed pictures which are coded with different quantization scales. We recognize that the results are mostly reasonable with the different quantizations.

• （社）電子情報通信学会の論文
• 2009-12-01

著者

• SAGARA Naoya

  Seikei University

• SUGIYAMA Kenji

  Seikei University

• Sugiyama Kenji

  Seikei Univ. Musashino‐shi Jpn

• KASHIMURA Yohei

  Seikei University

• Sagara Naoya

  Seikei Univ. Musashino‐shi Jpn

関連論文

• ADAPTIVE INTERPOLATION CONSIDERING WITH SUBJECTIVE PICTURE QUALITY(International Workshop on Advanced Image Technology 2009)
• Linearity Improvement of Mosquito Noise Level Estimation from Decoded Picture
• Estimation of Mosquito Noise Level from Decoded Picture
• On the Minimum Weight of Simple Full-Length Array LDPC Codes
• DE-INTERLACING METHOD USING RECURSIVE AND BI-DIRECTIONAL INTER-FIELD INTERPOLATION(International Workshop on Advanced Image Technology 2006)
• A VISUAL SIMULATION OF CLOUD IN THE USE OF PARTICLE SYSTEM(International Workshop on Advanced Image Technology 2007)
• Linearity Improvement of Mosquito Noise Level Estimation from Decoded Picture

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