Arthur Floquet, Emmanuel Soubies, Duong-Hung Pham, Denis Kouame
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引用次数: 0
Abstract
The process of ultrasound (US) image formation can generally be modeled, using a linear and shift-invariance approximation, as a convolution. In practice, the point spread function (PSF) is shift-variant. Here, we consider the restoration problem using a shift-variant PSF, where it is modelled as product-convolution. We argue that the US PSF varies smoothly enough for product-convolution to serve as an efficient and effective direct model for US image restoration. We present a strategy for constructing the product-convolution operator, and derive an efficient optimization scheme. We finally validate our approach on both simulated and real data, demonstrating state-of-the-art results, while achieving significantly faster processing times.
期刊介绍:
IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control includes the theory, technology, materials, and applications relating to: (1) the generation, transmission, and detection of ultrasonic waves and related phenomena; (2) medical ultrasound, including hyperthermia, bioeffects, tissue characterization and imaging; (3) ferroelectric, piezoelectric, and piezomagnetic materials, including crystals, polycrystalline solids, films, polymers, and composites; (4) frequency control, timing and time distribution, including crystal oscillators and other means of classical frequency control, and atomic, molecular and laser frequency control standards. Areas of interest range from fundamental studies to the design and/or applications of devices and systems.