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Download or take a clear picture I1, and convert the image into a grayscale image I2. Then add random Gaussian noise to image I2 and

Download or take a clear picture I1, and convert the image into a grayscale image I2. Then add random Gaussian noise to image I2 and generate 30 noise-contaminated images N1 to N30.

Show noise reduction results by taking the average of any 2, 5, 20, and 30 images from N1 to N30. Briefly analyze your results based on your understanding. Please provide your matlab code.

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