# Feel++

## Multiscale Image

in order to deal with large scale image, several tools have been developed to facilitate access to images.

Denote f \in \mathbb{R}^N where N is the dimension of the image N=N_x N_y with N_x, N_y are the number of pixels in direction X and Y respectively. f contains the pixel value.

 define image format pending NOTE: define transformation pending
 Feel++ Keyword Math Object Description `msi(f)` T(f) the transformation from the coarse to fine level