Results 241 to 250 of about 4,738,986 (282)

Enhancement of spatial resolution of roentgenographic methods

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2009
The spatial resolution of X-ray micro-radiography is usually the crucial parameter determining its performance and range of possible applications. The lower limit of the spatial resolution of a roentgenographic method is given by the size and shape of the so-called Point Spread Function (PSF) of the imaging system.
Frantisek Krejci, Jan Jakubek, Jiri Dammer, Daniel Vavrik   +3 more
openaire   +1 more source

ImSpiRE: Image feature-aided spatial resolution enhancement method

Science China Life Sciences, 2023
Abstract The resolution of most spatially resolved transcriptomic technologies usually cannot attain the single-cell level, limiting their applications in biological discoveries. Here, we introduce ImSpiRE, an image feature-aided spatial resolution enhancement method for in situ ...
Yuwei Hua, Yizhi Zhang, Zhenming Guo, Shan Bian, Yong Zhang   +4 more
openaire   +2 more sources

Spatial-resolution enhancement in micro-CT

2003 IEEE Nuclear Science Symposium. Conference Record (IEEE Cat. No.03CH37515), 2004
We propose a new strategy to improve sampling density and image resolution in micro-CT without changing hardware and without sacrificing the size of the allowable maximum field of view (FOV). Such a strategy is achieved by use of the asymmetric scanning configurations in which the center of rotation is moved to an off-center position and a ...
null Xiaochuan Pan, null Lifeng Yu, null Chien-Min Kao, C. Pelizzari   +3 more
openaire   +1 more source

Enhancement of low spatial resolution image based on high resolution-bands

IEEE Transactions on Geoscience and Remote Sensing, 1996
Thermal infrared measurements of Band 6 acquired by Landsat TM sensor have lower spatial resolution than those of the other six bands. The authors propose a statistical approach to enhance the resolution of low spatial resolution image by using remaining bands. They employ a multivariate normal distribution for the seven band values. The values of Band
Ryuei Nishii, Saeko Kusanobu, Shojiro Tanaka   +2 more
openaire   +1 more source

Example-based super-resolution for enhancing spatial resolution of medical images

2016 38th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC), 2016
This paper proposes an effective exampled-based super-resolution (SR) method to improve the spatial resolution of medical image heavily corrupted by noise. Based on the sparsity of patches, the reconstruction of a high-resolution (HR) patch from each low-resolution (LR) input patch can be performed with the help of a database, by solving a non-negative
Dai-Viet Tran, Sébastien Li-Thiao-Té, Marie Luong, Le-Tien Thuong, Françoise Dibos, Jean-Marie Rocchisani   +5 more
openaire   +2 more sources

Spatial resolution enhancement of images using nonlinear interpolation

International Conference on Acoustics, Speech, and Signal Processing, 2002
A nonlinear interpolation scheme for image-resolution enhancement is presented. The algorithm is based upon a source model emphasizing edges and incorporates a hybrid local edge-fitting operator which has been developed for this application. A small neighbourhood about each pixel in the low-resolution image is first mapped to a best-fit continuous ...
Kris Jensen, Dimitris Anastassiou
openaire   +1 more source

Spatial resolution enhancement of Hyperion hyperspectral data

2009 First Workshop on Hyperspectral Image and Signal Processing: Evolution in Remote Sensing, 2009
In this study eight fusion techniques and more especially the Ehlers, Gram-Schmidt, High Pass Filter, Local Mean Matching (LMM), Local Mean and Variance Matching (LMVM), Modified IHS (Modihs), Pansharp and PCA, were used for the fusion of Hyperion hyperspectral data with ALI panchromatic data.
openaire   +1 more source

Enhancing spatial resolution for exploitation in hyperspectral imagery

Applied Imagery Pattern Recognition Workshop, 2002. Proceedings., 2003
Applications such as target recognition from remote sensed imagery may benefit from the fusion of traditional high resolution panchromatic or color images with multispectral or hyperspectral image cubes. A method for such image fusion proposed by Munechika and evaluated on synthetic imagery by Robinson, Gross and Schott is evaluated here using real ...
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Enhancing the spatial resolution of photothermal microscopy

Technical Physics Letters, 2000
It is demonstrated theoretically that the spatial resolution of the photothermal microscopy can be increased to the level of optical microscopy if the image is produced by a spatially modulated heating laser beam.
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A spatial resolution enhancement with the oversampled low resolution of satellite images

Advances in Space Research, 1994
Abstract A method for spatial resolution enhancement by means of inversion techniques is proposed. If the samples are overlapped, effective spatial resolution can be improved even if the Instantaneous Field of View(IFOV) of a satellite based sensor is large.
Kohei Arai, M. Matsumoto
openaire   +1 more source