Population
Image processing library in C++

Matrix In > Matrix Out (FFT) More...
Classes  
class  pop::Representation 
Working with representation. More...  
Matrix In > Matrix Out (FFT)
In general, an matrix is a spacedomain, a paving of a domain of the Euclidean space containing an information in each cell. This spacedomain representation is usually the direct matrix obtained by a microscopy. However, there is different kinds of representations of the information (see Representation). The Fourier transform allows the correspondence between the spacedomain and the frequencydomain. The wavelet transform allows the correspondence between the spacedomain and the scalespacedomain. The choice of the representation depends on the particular problem. For instance, the noise can be seen as fluctuation with a short length correlation. In the Fourier space, this noise corresponds to high frequency and it is removed easily with a low pass.