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Vertical Mg-ZnO nanorods were synthesized on glass substrates using a low-temperature hydrothermal method. The field emission performance of Mg-ZnO nanorods was greatly enhanced by UV light illumination. It was found that the Mg-ZnO nanorods grown at 80$^{\circ}{\rm C}$ were structurally uniform and well oriented with pure wurtzite structure. Mg-ZnO nanorod exhibited turn-on fields was 2.27 ${\rm V}/\mu{\rm m}$ ...
We report for the first time the combination of a quartz-based photonic crystal (PC) with a detection instrument designed to perform label-free (LF) and enhanced fluorescence (EF) imaging for antibody microarray applications. Label-free detection is used to quantify binding density of immobilized capture antibodies. Angle-scanning approach is implemented to achieve more uniform fluorescence enhancement...
People verification is a challenging and important task which finds many applications in modern surveillance and video retrieval systems. In this problem, metric learning approaches have played an important role by trying to bridge the semantic gap between image features and people's identities. However, we believe that the traditional Mahalanobis distance is limited in capturing the diversity of...
Human memory ability is gradually degenerated followed by the increasing of age. It is annoying for senior citizens to often forgetting and trying to recall the places of those objects commonly used in their daily lives. This paper presents a preliminary study for developing a vision-based system and helping senior citizens to recall the process of object-placing. In the initial stage, SURF (Speeded...
Age estimation from facial images has promising applications in human-computer interaction, biometrics, visual surveillance, and electronic customer relationship management, etc. Most existing techniques and systems can only handle frontal or near frontal view age estimation due to the difficulties of 1) differentiating diverse variations from uncontrollable and personalized aging patterns on faces...
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