====== Linear filtering ======

==== Convolution theorem ====
<m>F{f*g} = F{f}·F{g}</m>

=== Convolution in 2D ===
^method 		  |accuracy        ^kernel 	^complexity ^
|Fourier transform        |exact           |arbitrarily |<m>O(|F| · log|F|)</m> |
|Separable kernel         |exact           |limited     |<m>O(|F| · p|G|) </m> |
|Integral image 	  |high 	   |limited     |<m>O(|F|) </m> |
|Mip-mapping 		  |low             |arbitrarily |<m>O(|F|) </m> |


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