aux_get_filt_info.m

Standard model object recognition matlab code

function scales = aux_get_filt_info (field_names)

% FUNCTION scales = aux_get_filt_info (field_names)
%
% In several occasions, we need to obtain the scales stored in the
% fieldnames of filters.  For example, if fieldnames(f) returned
% 'f1_s1', 'f1_s2', 'f1_s4', and other field names, this function
% will return [1 2 4].

% There are 7 different kinds of fieldnames 
% (f1_s?, f2_s?, size_s?, i1_s?, i2_s?, i3_s?, shift_s?).
% Therefore, number of fields for each scale is 7.
num_fields = 7; 

f_names    = char(field_names);

% Read every 7 fields (1:num_fields:end).
% The scale number starts from the 5th letter (____? = f1_s?).
scales     = str2num(f_names(1:num_fields:end, 5:end));