Signal Processing
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Nagabhushan S N

PhD Student at IISc

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Top posts (6) All Questions Answers | Votes Newest

5 Why should an image be blurred using a Gaussian Kernel before downsampling? Oct 20 '18
4 Why can't a causal digital filter have an infinitely sharp transition between the passband and the stopband? Dec 26 '17
3 For a system to be causal, number of finite zeros <= number of finite poles. Why? Dec 26 '17
0 Why does White Noise in images imply noise in adjacent pixels are independent? Feb 5 '19
0 How to calculate the variance of noise when an image is downsampled? Feb 21 '19
0 What are the variances of dct coefficients in the 2d dct of a 8x8 patch of an image? Mar 27 '19

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