40,548 research outputs found
Learning Face Age Progression: A Pyramid Architecture of GANs
The two underlying requirements of face age progression, i.e. aging accuracy
and identity permanence, are not well studied in the literature. In this paper,
we present a novel generative adversarial network based approach. It separately
models the constraints for the intrinsic subject-specific characteristics and
the age-specific facial changes with respect to the elapsed time, ensuring that
the generated faces present desired aging effects while simultaneously keeping
personalized properties stable. Further, to generate more lifelike facial
details, high-level age-specific features conveyed by the synthesized face are
estimated by a pyramidal adversarial discriminator at multiple scales, which
simulates the aging effects in a finer manner. The proposed method is
applicable to diverse face samples in the presence of variations in pose,
expression, makeup, etc., and remarkably vivid aging effects are achieved. Both
visual fidelity and quantitative evaluations show that the approach advances
the state-of-the-art.Comment: CVPR 2018. V4 and V2 are the same, i.e. the conference version; V3 is
a related but different work, which is mistakenly submitted and will be
submitted as a new arXiv pape
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Aging concrete structures: a review of mechanics and concepts
The safe and cost-efficient management of our built infrastructure is a challenging task considering the expected service life of at least 50 years. In spite of time-dependent changes in material properties, deterioration processes and changing demand by society, the structures need to satisfy many technical requirements related to serviceability, durability, sustainability and bearing capacity. This review paper summarizes the challenges associated with the safe design and maintenance of aging concrete structures and gives an overview of some concepts and approaches that are being developed to address these challenges
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