Point Spread Function Estimation for a Terahertz Imaging System

Point Spread Function Estimation for a Terahertz Imaging System

We present a method for estimating the point spread function of a terahertz imaging system designed to operate in reflection mode. The method is based on imaging phantoms with known geometry, which have patterns with sharp edges at all orientations. The point spread functions are obtained by a deconvolution technique in the Fourier domain. We validate our results by using the estimated point sp...

Enhancement of Point Spread Function of Planar Fluorescent Imaging System Using Iterative Deconvolution Method

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Automated Image-Adaptive Point-Spread Function Estimation for Biological Imaging

Why are we interested in image restoration? The idea is to visualise the hearing organ in near-intact preparations with confocal microscopy. This is often made under image conditions far from optimal and this is where image restoration can be very useful, allowing one to increase the signal-to-noise ratio of the image by denoising and to increase their resolution by deconvolution. The problem s...

Tomographic Estimation of the Point-spread Function of an Ultrasound Imaging System for Deconvolution

An homomorphic filtering and expectation maximization approach for the point spread function estimation in ultrasound imaging

In modern ultrasound imaging systems, the spatial resolution is severely limited due to the effects of both the finite aperture and overall bandwidth of ultrasound transducers and the non-negligible width of the transmitted ultrasound beams. This low spatial resolution remains the major limiting factor in the clinical usefulness of medical ultrasound images. In order to recover clinically impor...