Results 31 to 40 of about 531,050 (289)

Deep Learning with Adaptive Attention for Seismic Velocity Inversion

open access: yesRemote Sensing, 2022
The subsurface velocity model is crucial for high-resolution seismic imaging. Although full-waveform inversion (FWI) is a high-accuracy velocity inversion method, it inevitably suffers from challenging problems, including human interference, strong ...
Fangda Li   +5 more
doaj   +1 more source

Comparison of chemical clustering methods using graph- and fingerprint-based similarity measures [PDF]

open access: yes, 2003
This paper compares several published methods for clustering chemical structures, using both graph- and fingerprint-based similarity measures. The clusterings from each method were compared to determine the degree of cluster overlap. Each method was also
Blankley, C.J.   +2 more
core   +1 more source

Content-Aware Retargeted Image Quality Assessment

open access: yesInformation, 2019
In targeting the low correlation between existing image scaling quality assessment methods and subjective awareness, a content-aware retargeted image quality assessment algorithm is proposed, which is based on the structural similarity index.
Tingting Zhang   +3 more
doaj   +1 more source

nOMP: A New Sparse Solution to Enhance the SSIM Levels of OMP-Based Encoded Images

open access: yesIEEE Access, 2022
This work comprises the development of a quality enhancement technique for image encoders that use compressive sensing. The recommended solution seeks to maximize the perceptual quality based objective function, unlike other sparse representation ...
A. N. Omara   +2 more
doaj   +1 more source

Effective and Efficient Similarity Index for Link Prediction of Complex Networks [PDF]

open access: yes, 2009
Predictions of missing links of incomplete networks like protein-protein interaction networks or very likely but not yet existent links in evolutionary networks like friendship networks in web society can be considered as a guideline for further ...
A. Popescul   +23 more
core   +2 more sources

A Hitchhiker’s Guide to Structural Similarity

open access: yesIEEE Access, 2021
The Structural Similarity (SSIM) Index is a very widely used image/video quality model that continues to play an important role in the perceptual evaluation of compression algorithms, encoding recipes and numerous other image/video processing algorithms.
Abhinau K. Venkataramanan   +4 more
doaj   +1 more source

Exact Histogram Specification Optimized for Structural Similarity

open access: yes, 2008
An exact histogram specification (EHS) method modifies its input image to have a specified histogram. Applications of EHS include image (contrast) enhancement (e.g., by histogram equalization) and histogram watermarking.
Alireza Nasiri Avanaki   +20 more
core   +1 more source

Temporal similarity metrics for latent network reconstruction: The role of time-lag decay [PDF]

open access: yes, 2019
When investigating the spreading of a piece of information or the diffusion of an innovation, we often lack information on the underlying propagation network.
Liao, Hao   +4 more
core   +1 more source

The giant radio halo in Abell 2163 [PDF]

open access: yes, 2001
New radio data is presented for the rich cluster Abell 2163. The cluster radio emission is characterized by the presence of a radio halo, which is one of the most powerful and extended halos known so far.
Feretti, L.   +3 more
core   +3 more sources

Performance of active contour models in train rolling stock part segmentation on high-speed video data

open access: yesCogent Engineering, 2017
Rolling stock examination is performed to identify the defects during train movements at speeds
Ch. Raghava Prasad, P.V.V. Kishore
doaj   +1 more source

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