Theobald, C. M.; Glasbey, C. A.; Horgan, G. W.; … - In: Journal of the Royal Statistical Society Series C 53 (2004) 1, pp. 163-175
We consider the use of principal component analysis to summarize the variation in labelled landmark data for images which are reversible in the sense that a mirror image may be defined for each image and the original and mirror images may be regarded as equally representative of the population....
