deconvolution


Also found in: Medical, Acronyms, Wikipedia.

deconvolution

(dee-kon-vŏ-loo -shŏn) The recovery (‘unsmearing’) of data, such as an astronomical image, that has been convolved (see convolution) with a response function, such as a telescope beam. The process is nearly always carried out on a computer using one or more deconvolution algorithms (see aperture synthesis). It can greatly improve the fidelity of images, particularly when the convolving function is well defined. The process is used extensively in aperture synthesis to remove artifacts generated by the synthesized beam and greatly improved the early performance of the Hubble Space Telescope.
Collins Dictionary of Astronomy © Market House Books Ltd, 2006
Mentioned in ?
References in periodicals archive ?
Lee, "Handling Outliers In Non-Blind Image Deconvolution", Computer Vision (ICCV), 6-13 Nov.
Salazar, "Automatic simultaneous measurement of phase velocity and thickness in composite plates using iterative deconvolution", NDT&E Int., vol.
The presence of noise affects the image but to a lesser extent than for simpler deconvolution method like Wiener deconvolution.
The convolution performs as an encoder that maps multiple input activations to a single output activation within a filter window, whereas deconvolution corresponds to a decoder that associates a single input activation with multiple outputs, as show in Fig.
DECONVOLUTION OF GRANULOCYTES, MONOCYTES, AND LYMPHOCYTES
3D Euler Deconvolution. Reference [28] proposed a technique for analyzing magnetic profiles based on Euler's relation for homogeneous functions.
The fluorescence decays were analyzed with a locally developed Microsoft Excel[TM] add-on software using the nonlinear least-squares fitting method with IRF deconvolution. The values obtained were 490.7 ps for the Erythrosin B and 3959.7 ps for the Coumarin 153.
The proposed method consists of Human visual system(HVS),which is based on three characteristics: maximum likelihood estimation, blind deconvolution ,linear transformation.
The deconvolution of this and all the other spectra was carried out with the XPSPEAK software, using a Shirley background correction.
Since unpooling and deconvolution have different contributions to reconstructing the original size of segmentation regions, unpooling records the original locations; deconvolution tends to capture detail shapes.