TY - GEN
T1 - Alternating optimization for lambertian photometric stereo model with unknown lighting directions
AU - Kyrgyzova, Khrystyna
AU - Allano, Lorène
AU - Aupetit, Michaël
PY - 2013
Y1 - 2013
N2 - Photometric stereo is a technique of surface reconstruction using several object images made with a fixed camera position and varying illumination directions. Reconstructed surfaces can have complex reflecting properties which are unknown a priori and often simplified by Lambertian model (reflecting light uniformly in all directions). Such simplification leads to certain inaccuracy of reconstruction but in most cases is sufficient to obtain general object relief important for further recognition. Not only surface properties but also lighting sources utilized for each image acquisition can be very complex for modeling, or even unknown. Our work demonstrates how to find surface normals from Lambertian photometric stereo model using color images made with a priori unknown lighting directions. Evaluation of model components is based on an alternating optimization approach.
AB - Photometric stereo is a technique of surface reconstruction using several object images made with a fixed camera position and varying illumination directions. Reconstructed surfaces can have complex reflecting properties which are unknown a priori and often simplified by Lambertian model (reflecting light uniformly in all directions). Such simplification leads to certain inaccuracy of reconstruction but in most cases is sufficient to obtain general object relief important for further recognition. Not only surface properties but also lighting sources utilized for each image acquisition can be very complex for modeling, or even unknown. Our work demonstrates how to find surface normals from Lambertian photometric stereo model using color images made with a priori unknown lighting directions. Evaluation of model components is based on an alternating optimization approach.
KW - Lambertian reflectance model
KW - alternating optimization
KW - photometric stereo
KW - surface normals
UR - http://www.scopus.com/inward/record.url?scp=84884482989&partnerID=8YFLogxK
U2 - 10.1007/978-3-642-40246-3_44
DO - 10.1007/978-3-642-40246-3_44
M3 - Conference contribution
AN - SCOPUS:84884482989
SN - 9783642402456
T3 - Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
SP - 354
EP - 361
BT - Computer Analysis of Images and Patterns - 15th International Conference, CAIP 2013, Proceedings
T2 - 15th International Conference on Computer Analysis of Images and Patterns, CAIP 2013
Y2 - 27 August 2013 through 29 August 2013
ER -