# AWGN 환경에서 국부 마스크의 표준편차를 이용한 변형된 평균 필터에 관한 연구

• Accepted : 2016.03.22
• Published : 2016.04.30
• 16 10

#### Abstract

Recently, with the rapid demand expansion on the devices of digital image processing, the excellent quality of the images is required. However, the degradation of the images occurs in the processes of data acquisition, processing, and transmission by various external causes and the noise has been well known as the major cause of image degradation. There are a variety of noises to be added on the images, with typical example of AWGN. Hence, in this article, we suggested average filter algorithm processed by the threshold values using them applying standard deviation of local mask under the AWGN environment in this study. As the result of the simulation, The proposed algorithm shows a high PSNR of 24.56[dB] for Barbara images that had been damaged of AWGN(${\sigma}=15$), compared to the existing MF, CWMF and AWMF there were improvements by 3.34[dB], 2.57[dB], and 3.32[dB], respectively.

#### Keywords

AWGN;Corrupted image;Average filter;PSNR

#### References

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#### Acknowledgement

Supported by : Pukyong National University