Spatially Variant Ultrasound Image Restoration with Product Convolution.

IF 3 2区 工程技术 Q1 ACOUSTICS
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.

基于积卷积的空间变异超声图像恢复。
超声(US)图像形成的过程通常可以建模,使用线性和移位不变性近似,作为卷积。在实际应用中,点扩展函数(PSF)是位移变的。在这里,我们使用移位变PSF来考虑恢复问题,其中它被建模为乘积卷积。我们认为,美国PSF变化足够平滑,产品卷积可以作为美国图像恢复的高效和有效的直接模型。提出了一种构造积卷积算子的策略,并推导出一种有效的优化方案。我们最终在模拟和真实数据上验证了我们的方法,展示了最先进的结果,同时实现了更快的处理时间。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
CiteScore
7.70
自引率
16.70%
发文量
583
审稿时长
4.5 months
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.
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