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- W1993591510 abstract "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." @default.
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- W1993591510 date "2009-01-01" @default.
- W1993591510 modified "2023-09-25" @default.
- W1993591510 title "Estimation of Mosquito Noise Level from Decoded Picture" @default.
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- W1993591510 doi "https://doi.org/10.1587/transfun.e92.a.3291" @default.
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