For a band-limited function, which Theorem says that “if the function is sampled at a rate equal to or greater than twice its highest frequency, the original function can be recovered from its samples”?(a) Band-limitation theorem(b) Aliasing frequency theorem(c) Shannon sampling theorem(d) None of the mentionedThe question was asked during an interview.The doubt is from Spatial and Gray-Level Resolution and Aliasing in chapter Image Enhancement of Digital Image Processing

For a band-limited function, which Theorem says that “if the functio

1.	For a band-limited function, which Theorem says that “if the function is sampled at a rate equal to or greater than twice its highest frequency, the original function can be recovered from its samples”?(a) Band-limitation theorem(b) Aliasing frequency theorem(c) Shannon sampling theorem(d) None of the mentionedThe question was asked during an interview.The doubt is from Spatial and Gray-Level Resolution and Aliasing in chapter Image Enhancement of Digital Image Processing
Answer» The correct choice is (c) SHANNON sampling theorem The explanation: For a band-limited function, Shannon sampling theorem says that “if the function is sampled at a rate EQUAL to or greater than TWICE its HIGHEST frequency, the ORIGINAL function can be recovered from its samples”.

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