Wednesday, December 20, 2017

What Properties Make Certain Wavelets "Better" Than Others In Image Compression?


I am trying to teach myself more about image compression using the wavelet transform method. My question is: What is it about certain wavelets that make them preferable when compressing images? Are they easier to compute? Do they produce smoother images? Etc...


Example: JPEG 2000 uses the Cohen-Daubechies-Feauveau 9/7 Wavelet...why this one?




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digital communications - Understanding the Matched Filter

I have a question about matched filtering. Does the matched filter maximise the SNR at the moment of decision only? As far as I understand, ...