Title :
The response of texture features to illuminant rotation
Author :
Chantler, M.J. ; McGunnigle, G.
Author_Institution :
Dept. of Comput. & Electr. Eng., Heriot-Watt Univ., Edinburgh, UK
Abstract :
Rotation of the illuminant source about a subject textured surface can cause catastrophic failure of texture classification schemes. This is due to the variation of texture feature output that can occur when the illuminant direction is varied. This paper uses theory and experiment to show that the outputs of linear texture filters, and their features, are sinusoidal functions of the illuminant tilt angle
Keywords :
feature extraction; image texture; lighting; pattern classification; illuminant rotation; illuminant tilt angle; linear texture filters; texture classification; texture features; Cameras; Frequency domain analysis; Gabor filters; Geometry; Image texture; Nonlinear filters; Surface texture; Surface topography; Testing; Transfer functions;
Conference_Titel :
Pattern Recognition, 2000. Proceedings. 15th International Conference on
Conference_Location :
Barcelona
Print_ISBN :
0-7695-0750-6
DOI :
10.1109/ICPR.2000.903700
