Results 31 to 40 of about 164,404 (265)

High-resolution distributed ISAR imaging by OMP method

open access: yesThe Journal of Engineering, 2019
The distributed inverse synthetic aperture radar (ISAR) technique can form multiple virtual sensors and has the potential to increase the cross-range resolution by exploiting the multi-channel echoes.
Yuanyuan Li, Yaowen Fu, Wenpeng Zhang
doaj   +1 more source

Spatiotemporal super-resolution for low bitrate H.264 video [PDF]

open access: yes, 2010
Super-resolution and frame interpolation enhance low resolution low-framerate videos. Such techniques are especially important for limited bandwidth communications. This paper proposes a novel technique to up-scale videos compressed with H.264 at low bit-
Anantrasirichai, N   +3 more
core   +1 more source

Multiresolution-based image fusion with additive wavelet decomposition [PDF]

open access: yes, 1999
The standard data fusion methods may not be satisfactory to merge a high-resolution panchromatic image and a low-resolution multispectral image because they can distort the spectral characteristics of the multispectral data.
Fors Aldrich, Octavi   +8 more
core   +1 more source

High-resolution optical and SAR image fusion for building database updating [PDF]

open access: yes, 2011
This paper addresses the issue of cartographic database (DB) creation or updating using high-resolution synthetic aperture radar and optical images. In cartographic applications, objects of interest are mainly buildings and roads.
M. Spigai   +9 more
core   +1 more source

Micrometer Scale Resolution Limit of a Fiber-Coupled Electro-Optic Probe

open access: yesSensors, 2019
We present the practical resolution limit of a fine electrical structure based on a fiber-coupled electro-optic probing system. The spatial resolution limit was experimentally evaluated on the sub-millimeter to micrometer scale of planar electrical ...
Young-Pyo Hong   +6 more
doaj   +1 more source

Temporal resolution in fluorescence imaging [PDF]

open access: yesFrontiers in Molecular Biosciences, 2014
Temporal resolution is a key factor for imaging rapidly occurring events in biology. In this feature article, I investigate an approximate estimate for determining the temporal resolution limit. The condition that led to this limit is, the time taken by the ensemble (99.9%) of excited molecules to relax to ground state, assuming all the emitted photons
openaire   +3 more sources

Introduction of sensor spectral response into image fusion methods. Application to wavelet-based methods [PDF]

open access: yes, 2005
Usual image fusion methods inject features from a high spatial resolution panchromatic sensor into every low spatial resolution multispectral band trying to preserve spectral signatures and improve spatial resolution to that of the panchromatic sensor ...
Fors Aldrich, Octavi   +7 more
core   +1 more source

Fixations on low-resolution images

open access: yesJournal of Vision, 2010
When an observer looks at an image, his eyes fixate on a few select points. Fixations from different observers are often consistent-observers tend to look at the same locations. We investigate how image resolution affects fixation locations and consistency across humans through an eye-tracking experiment.
Tilke, Judd   +2 more
openaire   +2 more sources

Guided filter-based multi-scale super-resolution reconstruction

open access: yesCAAI Transactions on Intelligence Technology, 2020
The learning-based super-resolution reconstruction method inputs a low-resolution image into a network, and learns a non-linear mapping relationship between low-resolution and high-resolution through the network.
Xiaomei Feng   +3 more
doaj   +1 more source

UHA‐CycleGAN: Unpaired hybrid attention network based on CycleGAN for terahertz image super‐resolution

open access: yesIET Image Processing, 2023
In recent years, terahertz imaging technology has been widely used in security, medicine, and other fields. However, the image resolution is low due to the limits of imaging equipment and diffraction. Traditional super‐resolution methods based on machine
Huanyu Liu, Haipeng Guo, Xiaodong Liu
doaj   +1 more source

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