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Are there any recommended filter types for passband frequencies near Nyquist?

The issue is the filter is circular across the Nyquist boundary, and so the requirement as given has no transition band. Filter complexity to meet a given requirement of stop band rejection and ...
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Why are real-world digital images not bandlimited?

This is an old chestnut. One of the earlier (but relatively recent) musings about this topic for general signals is Slepian's On Bandwidth.. A screenshot of the abstract is below.
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Why are real-world digital images not bandlimited?

The statement is either misleading or wrong, depending on interpretation. I defer to this answer for details, and for short version I cite my comments from under this answer What I'm saying is, it's ...
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Why are real-world digital images not bandlimited?

The notion of "digital image" is not so precise, when talking about some 2D multidimensional signal. One instance I know of is a seismic gather: a line of surface-based sensors, located ...
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