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APPLY_PERTURBATION_TO_POINTS: Apply noise to (correct) warp
GENERAL
points= apply_perturbation_to_points (points, offset_extent)
INPUT/S
-points
The points defining the CPS warp
-offset entent
Defines the amount of noise/distortion
-perturbation_method
The method of applying the change
OUTPUT/S
-points
The points after offset application
PENDING WORK
-
KNOWN BUG/S
-
COMMENT/S
-
RELATED FUNCTION/S
ABOUT
-Created: March 10th, 2004
-Last update: March 11th, 2004
-Revision: 0.0.3
-Author: R. S. Schestowitz, University of Manchester
==============================================================0001 function points = apply_perturbation_to_points (points, offset_extent, perturbation_method) 0002 % ============================================================== 0003 % APPLY_PERTURBATION_TO_POINTS: Apply noise to (correct) warp 0004 % 0005 % 0006 % GENERAL 0007 % 0008 % points= apply_perturbation_to_points (points, offset_extent) 0009 % 0010 % INPUT/S 0011 % 0012 % -points 0013 % The points defining the CPS warp 0014 % 0015 % -offset entent 0016 % Defines the amount of noise/distortion 0017 % 0018 % -perturbation_method 0019 % The method of applying the change 0020 % 0021 % OUTPUT/S 0022 % 0023 % -points 0024 % The points after offset application 0025 % 0026 % PENDING WORK 0027 % 0028 % - 0029 % 0030 % KNOWN BUG/S 0031 % 0032 % - 0033 % 0034 % COMMENT/S 0035 % 0036 % - 0037 % 0038 % RELATED FUNCTION/S 0039 % 0040 % 0041 % 0042 % ABOUT 0043 % 0044 % -Created: March 10th, 2004 0045 % -Last update: March 11th, 2004 0046 % -Revision: 0.0.3 0047 % -Author: R. S. Schestowitz, University of Manchester 0048 % ============================================================== 0049 0050 0051 if (strcmp(perturbation_method, 'random noise')), 0052 for i=1:size(points,2), 0053 points(i) = points(i) + offset_extent * (rand - 0.5) * 0.1; 0054 % points = average_smooth(points,5); 0055 end 0056 elseif (strcmp(perturbation_method, 'CPS warp')), 0057 % to be implemented 0058 end