aux_quantize_resp.m

Standard model object recognition matlab code

function y = aux_quantize_resp (x, num_quanta)

% FUNCTION y = aux_quantize_resp (x, num_quanta)
% 
% Get different scales and passed them onto quantize_resp function.
% num_quanta 
%  0: analog
%  >1: quantized
%  between 0 and 1: binary, this is the threshold value.

if num_quanta > 0
  num_scale = length(fieldnames(x));
  y = [];
  for i = 1:num_scale
    scale_tag = ['s' num2str(i)];
    x_tmp = getfield (x, scale_tag);
    y_tmp = quantize_resp (x_tmp, num_quanta);
    y = setfield (y, scale_tag, y_tmp);
  end
else
  y = x;
end

function y = quantize_resp (x, num_quanta)

% FUNCTION y = quantize_resp (x, num_quanta)
% 
% Quantize the response.

if num_quanta > 1
  %quantized response level, eg. num_quanta = 100;
  y = floor(x*num_quanta)/num_quanta;
elseif num_quanta > 0 % binary response. num_quanta is threshold.
  y = x.*(x > num_quanta);
else % just analog response, num_quanta = 0
  % do nothing.
  y = x;
end