Results 41 to 50 of about 967,991 (168)

A Hybrid Image Quality Measure for Automatic Image Quality Assessment [PDF]

, 2009
Automatic image quality assessment has many diverse applications. Existing quality measures are not accurate representatives of the human perception. We present a hybrid image quality (HIQ) measure, which is a combination of four existing measures using an `n' degree polynomial to accurately model the human image perception.
Atif Bin Mansoor, Maaz Haider, Ajmal S. Mian, Shoab A. Khan   +3 more
openaire   +1 more source

Quality of Compressed Medical Images [PDF]

Journal of Digital Imaging, 2007
Previous studies have shown that Joint Photographic Experts Group (JPEG) 2000 compression is better than JPEG at higher compression ratio levels. However, some findings revealed that this is not valid at lower levels. In this study, the qualities of compressed medical images in these ratio areas ( approximately 20), including computed radiography ...
Ya-Hui Shiao, Tzong-Jer Chen, Keh-Shih Chuang, Cheng-Hsun Lin, Chun-Chao Chuang   +4 more
openaire   +2 more sources

Prediction of functional outcomes in aneurysmal subarachnoid hemorrhage using pre-/postoperative noncontrast CT within 3 days of admission

npj Digital Medicine
Aneurysmal subarachnoid hemorrhage (aSAH) is a life-threatening condition, and accurate prediction of functional outcomes is critical for optimizing patient management within the initial 3 days of presentation.
Pengzhan Yin, Jiaqi Wang, Chao Zhang, Yongxiang Tang, Xiankuo Hu, Hongmin Shu, Jun Wang, Bin Liu, Yongqiang Yu, Yunfeng Zhou, Xiaohu Li   +10 more
doaj   +1 more source

Assessment of Myocardial Stiffness in Healthy Adults by Magnetic Resonance Elastography: Effects of Slice Location and Demographic Factors

Meta-Radiology
Purpose: To establish normal myocardial stiffness values in healthy adults using cardiac MR elastography (MRE) and assess the impact of slice location and demographic factors.
Yong Cheng, Shutian An, Zhen Wang, Yewen Jiang, Zijun Zheng, Zhanglei Li, Jun Wang, Jun Chen, Yongqiang Yu, Ren Zhao, Xiaohu Li   +10 more
doaj   +1 more source

UASea: A Data Acquisition Toolbox for Improving Marine Habitat Mapping

Drones, 2021
Unmanned aerial systems (UAS) are widely used in the acquisition of high-resolution information in the marine environment. Although the potential applications of UAS in marine habitat mapping are constantly increasing, many limitations need to be ...
Michaela Doukari, Marios Batsaris, Konstantinos Topouzelis   +2 more
doaj   +1 more source

Effect of spin-lock frequency on quantitative myocardial T1ρ mapping

Insights into Imaging
Objectives To use T1ρ mapping to assess myocardial fibrosis and to provide a reference for future clinical application, it is necessary to understand the factors influencing T1ρ values.
Caiyun Han, Huimin Xu, Hui Gao, Fang Liu, Jian Wu, Yan Liu, Yong Cheng, Wei Deng, Xiuzheng Yue, Zhigang Wu, Yongqiang Yu, Ren Zhao, Yuchi Han, Xiaohu Li   +13 more
doaj   +1 more source

Visual Interface Evaluation for Wearables Datasets: Predicting the Subjective Augmented Vision Image QoE and QoS

Future Internet, 2017
As Augmented Reality (AR) applications become commonplace, the determination of a device operator’s subjective Quality of Experience (QoE) in addition to objective Quality of Service (QoS) metrics gains importance. Human subject experimentation is common
Brian Bauman, Patrick Seeling
doaj   +1 more source

Exploring Relationships between Boltzmann Entropy of Images and Building Classification Accuracy in Land Cover Mapping

Entropy, 2023
Remote sensing images are important data sources for land cover mapping. As one of the most important artificial features in remote sensing images, buildings play a critical role in many applications, such as population estimation and urban planning ...
Zhipeng Li, Tian Lan, Zhilin Li, Peichao Gao   +3 more
doaj   +1 more source

An Innovative Method to Improve Model Accuracy by Implementing Multi-models Scheme for 28nm Node and Below

Journal of Microelectronic Manufacturing, 2019
As the process comes into 28nm node and below, lithography struggles stronger between high resolution (high NA) and enough process window especially for hole layers (Contacts and Vias). Taking more care of process window may result in lower image quality
Qingchen Cao, Tianhui Li, Shuying Wang, Deyuan Xiao   +3 more
doaj   +1 more source

Myocardial involvement characteristics by cardiac MR imaging in neurological and non-neurological Wilson disease patients

Insights into Imaging
Objectives To explore the characteristics of myocardial involvement in Wilson Disease (WD) patients by cardiac magnetic resonance (CMR). Methods We prospectively included WD patients and age- and sex-matched healthy population.
Wei Deng, Jie Zhang, Zhuoran Jia, Zixiang Pan, Zhen Wang, Huimin Xu, Liang Zhong, Yongqiang Yu, Ren Zhao, Xiaohu Li   +9 more
doaj   +1 more source