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Understanding the camera wearers activity is central to egocentric vision, yet one key facet of that activity is inherently invisible to the camera—the wearers body pose. Prior work focuses on estimating the pose of hands and arms when they come into view, but this 1) gives an incomplete view of the full body posture, and 2) prevents any pose estimate at all in many frames, since the hands...
A low-profile high-gain unidirectional antenna is proposed and demonstrated using both metamaterial (MM) and substrate-integrated waveguide (SIW) technologies. First, the leaky modes supported by a grounded anisotropic slab are studied. These investigations reveal that a grounded slab consisting of an anisotropic zero/low index material can provide an extremely low value for the real part of the propagation...
In a virtualized cloud computing environment, frequent snapshot backup of virtual disks improves hosting reliability but storage demand of such operations is huge. While dirty bit-based technique can identify unmodified data between versions, full deduplication with fingerprint comparison can remove more redundant content at the cost of computing resources. This paper presents a multi-level selective...
A novel method is proposed for matching articulated objects in cluttered videos. The method needs only a single exemplar image of the target object. Instead of using a small set of large parts to represent an articulated object, the proposed model uses hundreds of small units to represent walks along paths of pixels between key points on an articulated object. Matching directly on dense pixels is...
In this paper, we present a free-standing optical zero-index metamaterial (ZIM) with a symmetric structure in the direction of wave propagation. The metamaterial consists of a gold-polyimide-gold tri-layer stack perforated by air holes to form a fishnet geometry. With the aid of a genetic algorithm (GA), this structure is optimized to exhibit a near-zero refractive index with low absorption loss and...
In this paper, the authors present an impedance-matched low loss infrared zero index metamaterials (ZIM) with a wide field-of-view. The ZIM structure is optimized by a genetic algorithm combined with a generalized inversion method capable of retrieving the effective anisotropic constitutive parameters of the metamaterial with its angular response considered.
Gold nanoparticle based periodic arrays combined with polymer thin films have been fabricated. Near infrared transmission measurements of the effect of polymer coatings on the plasmon resonance peaks show high sensitivities to refractive index changes.
Pulse-taking is a characteristic technique of diagnosis in traditional Chinese medicine (TCM) and plays a very important role in TCM clinical practice. The diversity of pulse condition can reflect the change of organs and entrails as well as QI-blood and body fluid in human body. It is one important index of health monitoring. In this paper, we expound the formation of biometric characteristic of...
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