TY - GEN
T1 - The invariance properties of chromatic characteristics
AU - Chung, Yun Chung
AU - Chang, Shyang Lih
AU - Cherng, Shen
AU - Chen, Sei Wang
PY - 2006
Y1 - 2006
N2 - An approach to analyzing the degrees of invariance of chromatic characteristics is proposed in this paper. In many vision applications, it is desirable that the chromatic characteristics of objects in images taken under different lighting conditions could remain constant. However, the invariance properties of chromatic characteristics are subject to the lighting conditions. In order to be able to apply to dynamic scenes, we consider three fundamental lighting sources: diffuse, ambient, and directed lightings. Any illumination condition can be approximated as a combination of the three lighting sources. The proposed degree of chromatic invariance is defined based on the chromatic characteristic behaviors under different illumination conditions. A lot of image samples under different illumination conditions are utilized, and from experimental results, we conclude that chromatic characteristics {H, C, C λ} are most stable and suitable for the vision applications.
AB - An approach to analyzing the degrees of invariance of chromatic characteristics is proposed in this paper. In many vision applications, it is desirable that the chromatic characteristics of objects in images taken under different lighting conditions could remain constant. However, the invariance properties of chromatic characteristics are subject to the lighting conditions. In order to be able to apply to dynamic scenes, we consider three fundamental lighting sources: diffuse, ambient, and directed lightings. Any illumination condition can be approximated as a combination of the three lighting sources. The proposed degree of chromatic invariance is defined based on the chromatic characteristic behaviors under different illumination conditions. A lot of image samples under different illumination conditions are utilized, and from experimental results, we conclude that chromatic characteristics {H, C, C λ} are most stable and suitable for the vision applications.
KW - Chromatic characteristic invariant
KW - Degree of chromatic invariance
KW - Photometric reflectance model
UR - http://www.scopus.com/inward/record.url?scp=70350257954&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=70350257954&partnerID=8YFLogxK
U2 - 10.1007/11949534_13
DO - 10.1007/11949534_13
M3 - Conference contribution
AN - SCOPUS:70350257954
SN - 354068297X
SN - 9783540682974
T3 - Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
SP - 128
EP - 137
BT - Advances in Image and Video Technology - First Pacific Rim Symposium, PSIVT 2006, Proceedings
PB - Springer Verlag
T2 - 1st Pacific Rim Symposium on Image and Video Technology, PSIVT 2006
Y2 - 10 December 2006 through 13 December 2006
ER -