Results 81 to 90 of about 2,512,732 (195)

Dual modality electrical impedance and ultrasound reflection tomography to improve image quality

Journal of Electrical Bioimpedance, 2017
Electrical impedance tomography (EIT) is relatively new. It is a verypromising technique to be developed especially in the medical field. The advantages of EIT are that it is non-ionizing, simple, and portable and that it produces a high contrast image ...
Ain K., Kurniadi D., Suprijanto S., Santoso O.   +3 more
doaj   +1 more source

High-resolution imaging for the multireceiver SAS

The Journal of Engineering, 2019
The area coverage rate is dramatically improved by using the multireceiver technique. However, this configuration leads to the complexity of the synthetic aperture image formation.
Xuebo Zhang, Wenwei Ying, Wenwei Ying, Xuntao Dai   +3 more
doaj   +1 more source

Trends in Super-High-Definition Imaging Techniques Based on Deep Neural Networks

Mathematics, 2020
Images captured by cameras in closed-circuit televisions and black boxes in cities have low or poor quality owing to lens distortion and optical blur. Moreover, actual images acquired through imaging sensors of cameras such as charge-coupled devices and ...
Hyung-Il Kim, Seok Bong Yoo
doaj   +1 more source

Spatially Adaptive Intensity Bounds for Image Restoration

EURASIP Journal on Advances in Signal Processing, 2003
Spatially-adaptive intensity bounds on the image estimate are shown to be an effective means of regularising the ill-posed image restoration problem.
Stathaki Tania, Katsaggelos Aggelos K, May Kaaren L   +2 more
doaj   +1 more source

Pyramid With Super Resolution for In-the-Wild Facial Expression Recognition

IEEE Access, 2020
Facial Expression Recognition (FER) is a challenging task that improves natural human-computer interaction. This paper focuses on automatic FER on a single in-the-wild (ITW) image. ITW images suffer real problems of pose, direction, and input resolution.
Thanh-Hung Vo, Guee-Sang Lee, Hyung-Jeong Yang, Soo-Hyung Kim   +3 more
doaj   +1 more source

Combining multiple resolutions into hierarchical representations for kernel-based image classification [PDF]

, 2016
Geographic object-based image analysis (GEOBIA) framework has gained increasing interest recently. Following this popular paradigm, we propose a novel multiscale classification approach operating on a hierarchical image representation built from two ...
Chapel, Laetitia, Cui, Yanwei, Lefevre, Sébastien, Puissant, Anne   +3 more
core   +3 more sources

Remote Sensing and Mapping of Tamarisk along the Colorado River, USA: A Comparative Use of Summer-Acquired Hyperion, Thematic Mapper and QuickBird Data

Remote Sensing, 2009
Tamarisk (Tamarix spp., saltcedar) is a well-known invasive phreatophyte introduced from Asia to North America in the 1800s. This report compares the efficacy of Landsat 5 Thematic Mapper (TM5), QuickBird (QB) and EO-1 Hyperion data in discriminating ...
Jerry A. Griffith, Tracy R. Holcombe, Dan M. Holiday, David S. Mooneyhan, Danielle R. Fastring, Cheryl L. Lassitter, Gabriel A. Blossom, Kelly L. Lucas, Gregory A. Carter   +8 more
doaj   +1 more source

Flight Altitude and Sensor Angle Affect Unmanned Aerial System Cotton Plant Height Assessments

Drones
Plant height is a critical biophysical trait indicative of plant growth and developmental conditions and is valuable for biomass estimation and crop yield prediction.
Oluwatola Adedeji, Alwaseela Abdalla, Bishnu Ghimire, Glen Ritchie, Wenxuan Guo   +4 more
doaj   +1 more source

Enhancing Model Accuracy of UAV-Based Biomass Estimation by Evaluating Effects of Image Resolution and Texture Feature Extraction Strategy

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
The unmanned aerial vehicle (UAV) remote sensing technology provides new opportunities to estimate crop aboveground biomass (AGB). However, the application of UAV remote sensing data in practical farms remains challenging because to obtain UAV image ...
Yaxiao Niu, Xiaoying Song, Liyuan Zhang, Lizhang Xu, Aichen Wang, Qingzhen Zhu   +5 more
doaj   +1 more source

Exploring the Impact of Imaging Resolution and Sharpness on Dermatological Diagnostics Using eSFR Measurements

Elektronika ir Elektrotechnika
High-resolution, small-form-factor image sensors enable the integration of mobile device cameras, which are increasingly being used for photographic documentation in many fields, including medicine.
Bogdan Dugonik, Marjan Golob
doaj   +1 more source