Coherent wavefield subtraction for diffraction separation
نویسندگان
چکیده
منابع مشابه
Elastic wavefield separation for VTI media
The separation of wave modes from isotropic elastic wavefields is typically done using Helmholtz decomposition. However, Helmholtz decomposition using conventional divergence and curl operators in anisotropic media does not give satisfactory results and leaves the different wave modes only partially separated. The separation of anisotropic wavefields requires the use of more sophisticated opera...
متن کاملColor Separation for Background Subtraction
Background subtraction is a vital step in many computer vision systems. In background subtraction, one is given two (or more) frames of a video sequence taken with a still camera. Due to the stationarity of the camera, any color change in the scene is mainly due to the presence of moving objects. The goal of background subtraction is to separate the moving objects (also called the foreground) f...
متن کاملCoherent Diffraction Imaging
For centuries, lens-based microscopy, such as light, phase-contrast, fluorescence, confocal and electron microscopy, has played an important role in the evolution of modern science and technology. In 1999, a novel form of microscopy, known as coherent diffraction imaging (CDI) or lensless imaging, was developed and transformed our traditional view of microscopy, in which the diffraction pattern...
متن کاملFresnel coherent diffraction tomography.
Tomographic coherent imaging requires the reconstruction of a series of two-dimensional projections of the object. We show that using the solution for the image of one projection as the starting point for the reconstruction of the next projection offers a reliable and rapid approach to the image reconstruction. The method is demonstrated on simulated and experimental data. This technique also s...
متن کاملShort Note Subtraction versus filtering for signal/noise separation
The main motivation in writing this paper is to better understand why the subtraction method attenuates the noise better than the filtering approach (Guitton and Claerbout, 2003). This is difficult to answer since both methods, although having their roots in the inversion theory framework, follow two different philosophies. The subtraction method models simultaneously the noise and the signal c...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: GEOPHYSICS
سال: 2019
ISSN: 0016-8033,1942-2156
DOI: 10.1190/geo2018-0368.1