Results 41 to 50 of about 770,807 (317)

Content-Aware Retargeted Image Quality Assessment

Information, 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, Ming Yu, Yingchun Guo, Yi Liu   +3 more
doaj   +1 more source

Using carpet plots to analyze blood transit times in the brain during hypercapnic challenge magnetic resonance imaging

Frontiers in Physiology, 2023
Blood arrival time and blood transit time are useful metrics in characterizing hemodynamic behaviors in the brain. Functional magnetic resonance imaging in combination with a hypercapnic challenge has been proposed as a non-invasive imaging tool to ...
Bradley Fitzgerald, Jinxia Fiona Yao, Lia M. Hocke, Lia M. Hocke, Blaise deB. Frederick, Blaise deB. Frederick, Christiaan Hendrik Bas van Niftrik, Yunjie Tong   +7 more
doaj   +1 more source

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

, 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., Raymond, J.W., Willett, P.   +2 more
core   +1 more source

Deep Learning with Adaptive Attention for Seismic Velocity Inversion

Remote 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, Zhenwei Guo, Xinpeng Pan, Jianxin Liu, Yanyi Wang, Dawei Gao   +5 more
doaj   +1 more source

Exact Histogram Specification Optimized for Structural Similarity

, 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, D. Coltuc, D. Coltuc, D. Coltuc, D. Coltuc, E. L. Hall, H. Zhu, I.-L. Jung, J. A. Stark, J. Y. Kim, M. Barni, P. J. S. G. Ferreira, R. C. Gonzales, R. C. Gonzales, S.-C. Pei, T. H. Cormen, V. Caselles, Y. J. Zhang, Y. Wan, Z. Wang, Z. Wang   +20 more
core   +1 more source

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

IEEE 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, Hesham Farouk, Sayed A. Mohamed   +2 more
doaj   +1 more source

Classification of synoptic circulation patterns with a two-stage clustering algorithm using the modified structural similarity index metric (SSIM)

Earth System Dynamics
. We develop a new classification method for synoptic circulation patterns with the aim to extend the evaluation routine for climate simulations. This classification is applicable to any region of the globe of any size given the reference data.
Kristina Winderlich, C. Dalelane, Andreas Walter   +2 more
semanticscholar   +1 more source

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

Cogent 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

A Hitchhiker’s Guide to Structural Similarity

IEEE 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, Chengyang Wu, Alan C. Bovik, Ioannis Katsavounidis, Zafar Shahid   +4 more
doaj   +1 more source

Probabilistic Non-Local Means

, 2013
In this paper, we propose a so-called probabilistic non-local means (PNLM) method for image denoising. Our main contributions are: 1) we point out defects of the weight function used in the classic NLM; 2) we successfully derive all theoretical ...
Natarajan, Premkumar, Noonan, Joseph P., Tracey, Brian, Wu, Yue   +3 more
core   +1 more source