Results 11 to 20 of about 13,928,481 (267)

Loopy belief propagation and probabilistic image processing [PDF]

open access: yes, 2003
Estimation of hyperparameters by maximization of the marginal likelihood in probabilistic image processing is investigated by using the cluster variation method.
Inoue, J., Tanaka, K., Titterington, M.
core   +8 more sources

Improvements to MOS CCD technology for future X-ray astronomy missions [PDF]

open access: yes, 2008
This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.This thesis is concerned with the development of MOS charge-coupled device (CCD) technology for future applications in X-ray astronomy.
Murray, Neil John
core   +7 more sources

Precise Distance Measurement for a Near-Earth Asteroid by the Refined Rotational Reflex Velocity Method

open access: yesThe Astronomical Journal, 2023
The rotational reflex velocity (RRV) method was proposed by Heinze and Metchev in 2015 and was used to measure the distances of main-belt asteroids (MBAs). Later, Lin et al. generalized this method using spherical astronomy in 2016.
B. F. Guo   +3 more
doaj   +1 more source

Multitraining support vector machine for image retrieval [PDF]

open access: yes, 2006
Relevance feedback (RF) schemes based on support vector machines (SVMs) have been widely used in content-based image retrieval (CBIR). However, the performance of SVM-based RF approaches is often poor when the number of labeled feedback samples is small.
Tao, D.   +7 more
core   +1 more source

Image compression with anisotropic diffusion [PDF]

open access: yes, 2008
Compression is an important field of digital image processing where well-engineered methods with high performance exist. Partial differential equations (PDEs), however, have not much been explored in this context so far. In our paper we introduce a novel
Welk, Martin   +19 more
core   +1 more source

Accelerating software radio astronomy FX correlation with GPU and FPGA co-processors [PDF]

open access: yes, 2010
Includes abstract.Includes bibliographical references (leaves [117]-121).This thesis attempts to accelerate compute intensive sections of a frequency domain radio astronomy correlator using dedicated co-processors.
Woods, Andrew
core   +1 more source

Neural cross-correlation for radio astronomy [PDF]

open access: yes, 2010
Includes abstract.Includes bibliographical references (leaves 56-62).Correlation engines are essential elements of most signal processing systems.
Ngongoni, Chipo Nancy
core   +1 more source

Optimal partitioning methods for image segmentation

open access: yesThe Journal of Engineering, 2015
The importance of image processing is increasing in the digitally connected world due to its numerous applications in various fields of medical science, astronomy, weather prediction and video surveillance systems etc. The latest research and development
Shreyas Fadnavis
doaj   +1 more source

DSP IMPLEMENTATION OF THE FAST FOURIER TRANSFORM USING THE CORDIC ALGORITHM

open access: yesICTACT Journal on Communication Technology, 2018
Fourier transform is a tool enabling the understanding and implementation of a large number of numerical methods for signal and image processing. This tool has many applications in domains such as vocal recognition, image quality improvement, digital ...
Youness Mehdaoui, Rachid El Alami
doaj   +1 more source

Richardson–Lucy Deconvolution with a Spatially Variant Point-spread Function of Chandra: Supernova Remnant Cassiopeia A as an Example

open access: yesThe Astrophysical Journal, 2023
Richardson–Lucy (RL) deconvolution is one of the classical methods widely used in X-ray astronomy and other areas. Amid recent progress in image processing, RL deconvolution still leaves much room for improvement under realistic situations. One direction
Yusuke Sakai   +5 more
doaj   +1 more source

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