Results 51 to 60 of about 200,528 (240)

Automatic contouring of geophysical data using bicubic spline interpolation

open access: hybrid, 1970
A method for automatic contouring of two-dimensional geophysical data is presented in this paper. The method is based on piecewise bicubic spline representation of uniformlygridded data points derived from irregularly-spaced observations. The testing of this method has been carried out with a set of data digitized along flight lines at points of ...
A Holroyd, B. K. Bhattacharyya
openalex   +2 more sources

Pixel Resolution Imaging in Parallel Phase-Shifting Digital Holography

open access: yesApplied Sciences, 2022
Parallel phase-shifting digital holography (PPSDH) employing a polarization image sensor can suppress zero-order and twin-image noise through a single exposure, achieve instantaneous measurement of complex-valued dynamic objects, and have broad ...
Yue Wang   +4 more
doaj   +1 more source

Effect of zooming on texture features of ultrasonic images

open access: yesCardiovascular Ultrasound, 2006
Background Unstable carotid plaques on subjective, visual, assessment using B-mode ultrasound scanning appear as echolucent and heterogeneous. Although previous studies on computer assisted plaque characterisation have standardised B-mode images for ...
Kyriacou Efthyvoulos   +4 more
doaj   +1 more source

Impact of eye fundus image preprocessing on key objects segmentation for glaucoma identification

open access: yesNonlinear Analysis, 2023
The pathological changes in the eye fundus image, especially around Optic Disc (OD) and Optic Cup (OC) may indicate eye diseases such as glaucoma. Therefore, accurate OD and OC segmentation is essential.
Sandra Virbukaitė   +1 more
doaj   +1 more source

Positivity and Monotonicity Preserving Biquartic Rational Interpolation Spline Surface

open access: yesJournal of Applied Mathematics, 2014
A biquartic rational interpolation spline surface over rectangular domain is constructed in this paper, which includes the classical bicubic Coons surface as a special case.
Xinru Liu, Yuanpeng Zhu, Shengjun Liu
doaj   +1 more source

FRESH – FRI-based single-image super-resolution algorithm [PDF]

open access: yes, 2016
In this paper, we consider the problem of single image super-resolution and propose a novel algorithm that outperforms state-of-the-art methods without the need of learning patches pairs from external data sets.
Dragotti, P, Wei, X
core   +1 more source

Spatial and Angular Resolution Enhancement of Light Fields Using Convolutional Neural Networks [PDF]

open access: yes, 2018
Light field imaging extends the traditional photography by capturing both spatial and angular distribution of light, which enables new capabilities, including post-capture refocusing, post-capture aperture control, and depth estimation from a single shot.
Gul, M. Shahzeb Khan   +1 more
core   +2 more sources

Comparison of spatial downscaling methods of general circulation model results to study climate variability during the Last Glacial Maximum [PDF]

open access: yesGeoscientific Model Development, 2018
The extent to which climate conditions influenced the spatial distribution of hominin populations in the past is highly debated. General circulation models (GCMs) and archaeological data have been used to address this issue.
G. Latombe   +7 more
doaj   +1 more source

Efficient Windows malware identification and classification scheme for plant protection information systems

open access: yesFrontiers in Plant Science, 2023
Due to developments in science and technology, the field of plant protection and the information industry have become increasingly integrated, which has resulted in the creation of plant protection information systems.
Zhiguo Chen   +5 more
doaj   +1 more source

SLIC Based Digital Image Enlargement

open access: yes, 2018
Low resolution image enhancement is a classical computer vision problem. Selecting the best method to reconstruct an image to a higher resolution with the limited data available in the low-resolution image is quite a challenge.
Amara, M. Z. F.   +2 more
core   +1 more source

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