Title :
Shadows and highlights detection in 4-source colour photometric stereo
Author :
Petrou, Maria ; Barsky, Svetlana
Author_Institution :
Sch. of Electronics, Comput. & Math., Surrey Univ., Guildford, UK
fDate :
6/23/1905 12:00:00 AM
Abstract :
The photometric stereo technique (PS) has been used for shape recovery for quite some time now. Using a modification of the method, we can recover local surface normals and surface colour from multiple images for surfaces with unspecified reflectance function. However, for adequate recovery one should be able to detect and appropriately deal with shadows and highlights in the input images. We propose here a methodology that allows us to do that
Keywords :
albedo; image classification; image colour analysis; image texture; photometry; reflectivity; stereo image processing; albedo; highlight detection; illumination-invariant classification; image texture; multiple images; photometric stereo technique; reflectance function; rough multicoloured surfaces; shadow detection; surface colour; Equations; Image recognition; Lighting; Mathematics; Photometry; Reflectivity; Rough surfaces; Shape; Surface roughness; Surface texture;
Conference_Titel :
Image Processing, 2001. Proceedings. 2001 International Conference on
Conference_Location :
Thessaloniki
Print_ISBN :
0-7803-6725-1
DOI :
10.1109/ICIP.2001.958286
