A research team at POSTECH has developed a novel multidimensional sampling theory to overcome the limitations of flat optics. Their study not only identifies the constraints of conventional sampling ...

In part 1, we started to make some intuitive connections between near-Nyquist sampling, the addition of close-frequency sines, and how those signals would interact with perfect LP filters. Let's put ...

If we want to take samples of some analog waveform, as in doing analog to digital conversions at some particular conversion rate, there is an absolute lower limit to the rate of doing conversions ...

A South Korean research team has proposed a new design theory to overcome the limitations of existing flat optics technology. Flat optics are expected to solve issues like the 'camera bump'—the camera ...

Sampling theory in shift-invariant spaces extends classical bandlimited reconstruction to a broad class of function spaces generated by the integer shifts of one or more prototype functions. In this ...

Suppose you take a few measurements of a time-varying signal. Let’s say for concreteness that you have a microcontroller that reads some voltage 100 times per second. Collecting a bunch of data points ...