Kayvon said something like in graphics, edges/corners/stuff like that have infinite frequencies. I don't quite understand this, can someone explain?
CynthiaJia
Not sure exactly, but I think it might be that we need higher and higher frequencies to reach a composite function that looks like a sharp edge (notice that every new frequency composited in the upper right function has a little higher frequency and gets the function looking a little more like the sawtooth) - so we'd have to have infinite frequencies in order to reach the actual 90 degree edge we'd like to see.
ramen
I think it's because the fourier transform of sharp things like edges/corners are infinite in the frequency domain.
Kayvon said something like in graphics, edges/corners/stuff like that have infinite frequencies. I don't quite understand this, can someone explain?
Not sure exactly, but I think it might be that we need higher and higher frequencies to reach a composite function that looks like a sharp edge (notice that every new frequency composited in the upper right function has a little higher frequency and gets the function looking a little more like the sawtooth) - so we'd have to have infinite frequencies in order to reach the actual 90 degree edge we'd like to see.
I think it's because the fourier transform of sharp things like edges/corners are infinite in the frequency domain.