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eyefinder.m

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% EYEFINDER find eyes in given images
%   F = eyefinder(IMG, ci) finds both eyes in the frontal faces in IMG using
%   the provided weights files for the left eye.  F = eyefinder(IMG, leftCi,
%   rightCi) uses separate weights files for each eye.
%
%   F is an array of sructs, where each row contains the face's
%   x, y, scale, and a vector of structs for each eye.  Each eye has fields
%   x, y, scale, activation, and flag.
%
%   [F,P] = eyefinder(IMG, ci, F) and eyefinder(IMG, leftCi, rightCi, F)
%   uses the flags for each eye in F to return the corresponding searched
%   patches. F must be a structure returned by a previous eyefinder
%   call, with each eye's flag either 0 or 1.
%
%   This function makes use of the mp_eyefinderMex mex file, which must
%   be compiled with the eyefinder project.
function [F, varargout] = eyefinder(img, ci, varargin)
  if nargin < 2
    error('Must input at least 2 arguments')
  end

  % First, make the image be a good image
  M = [];
  if ischar(img)
    [img, M] = imread(img);
  elseif ~isnumeric(img)
    error('First argument must be an image or image filename')
  end
  % make grayscale
  if ndims(img) == 3
    img = double(rgb2gray(img));
  elseif ~isempty(M)
    img = double(ind2gray(img,M));
  end

  img = double(img);
  if(max(max(img)) > 2)
    img = img./255;
  end
  % keyboard;
  % if nargin == 2
  ci2 = mirrorClassifier(ci);
  % end

  Fin = [];
% Check arguments
%  if nargin > 2
%    if ~isstruct(varargin{1})
%      error('Third argument must be a struct')
%    end
%    if nargin == 3
%      % Check to see if we have to mirror the struct
%      if isfield(varargin{1},'numClassifiers')
%             ci2 = varargin{1};
%      else
%             ci2 = mirrorClassifier(ci);
%             Fin = varargin{1};
%      end
%    elseif nargin == 4
%      ci2 = varargin{1};
%      Fin = varargin{2};
%    else
%      % Too many arguments
%    end
%  end
  if nargin > 2
          modestr = varargin{1}
        else
        modestr = 'wt_avg';
  end

  % determine if we will return patches or not
  if nargout == 1
    [F] = mp_eyefinderMex(ci, ci2, img, 0, modestr);
  elseif nargout == 2
    [F,varargout{1}] = mp_eyefinderMex(ci, ci2, img, 1, modestr);
  else
    error('Wrong number of outputs')
  end

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