Signal/noise separation and velocity estimation

Multi-azimuth velocity estimation

It is well known that the inverse problem of estimating interval velocities from reflection data is poorly constrained in 2-D. We show that the interval velocity estimation problem in 3-D is much better constrained when the velocity function is estimated by jointly inverting the data collected along multiple offset-azimuth, even when the azimuth range is fairly limited. We extend to 3-D the lin...

Breaking Wave Velocity Estimation

Notes on Motion Estimation 1 3d Velocity and Image Velocity

There are a great variety of applications that depend on analyzing the motion in image sequences. These include motion detection for surveillance, image sequence data compression (MPEG), image understanding (motion-based segmentation, depth/structure from motion), obstacle avoidance, image registration and compositing. The rst step in processing image sequences is typically image velocity estim...

Position and velocity estimation through acceleration measurements

This paper proposes a solution to the problem of velocity and position estimation for a class of oscillating systems whose position, velocity and acceleration are zero mean signals. The proposed scheme considers that the dynamic model of the system is unknown and only noisy acceleration measurements are available.

High Frequency Asymptotics and Velocity Estimation

Diierential semblance is unique amongst velocity inversion objectives in having well-deened and smooth high frequency asymptotics. A version appropriate for analysis of CMP gathers and layered models is particularly easy to analyse and economical for numerical experimentation. For model-consistent data, the DS objective measures the error in RMS velocity, weighted by the energy in the data-with...