In this paper a novel face recognition approach based on Adaptive Principal Component Analysis (APCA) and de-noised database is produced. The aim of our approach is to overcome PCA disadvantages especially the two limitations of discriminatory power poverty and the computational load complexity, by producing a new adaptive PCA based on single level 2-D discrete wavelet transform using Daubachie...

In this paper, we present new adaptive algorithms for the computation of the square root of the inverse covariance matrix. In contrast to the current similar methods, these new algorithms are obtained from an explicit cost function that is introduced for the first time. The new adaptive algorithms are used in a cascade form with a well known adaptive principal component analysis (APCA) to const...

AbstrAct In this chapter, we propose a pose variability compensation technique, which synthesizes realistic frontal face images from nonfrontal views. It is based on modeling the face via active appearance models and estimating the pose through a correlation model. The proposed technique is coupled with adaptive principal component analysis (APCA), which was previously shown to perform well in ...

The goal of this research is to identify and characterize enzymes involved in bilin attachment to the phycobiliprotein allophycocyanin in the cyanobacterium Synechococcus sp. PCC 7002. Candidates for lyases responsible for attachment of phycocyanobilin to allophycocyanin are two cpeS-like genes termed cpcS and cpcU, and one cpeT-like gene termed cpcT. In vitro bilin attachment reactions were co...

Current work aims to investigate the brain blood supply of local rabbit, where 14 rabbits both sexes were used with weights ranging from 3-3.5 kg. This study revealed that rabbit's is supplied by vertebral and internal carotid artery (ICA). The union arteries creates basilar runs on ventral surface pons medulla oblongata, forming at its end posterior communicating (PCA), as well path which foll...

OBJECTIVE To investigate the prevalence of a group of different autoantibodies, in Omani patients with gastric cancer, and to examine whether their presence correlates with clinical course of the disease. METHODS Ninety-three Omani patients with gastric cancer, and 100 gender-matched blood donors were investigated for the presence of 15 different auto-antibodies against nuclear antigens (ANA)...