projimage.m

It is for Face Recognition

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% function projImage()
%   z.li, 05-25-2004
%   project an h x w image to model given by [Tf, mf]
% function dependency:
%   - n/a
% input:
%   img     - h x w image
%   Tf      - transform, K x (hxw)
%   mf      - mean vector, (hxw) x 1
% output:
%   x       - (hxw) x 1 col vec. 
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%function [x]=projImage(img, Tf, mf)
function [x]=projImage(img, Tf, mf)
  vec = im2vec(img);
  x = Tf*(vec-mf);