Results 81 to 90 of about 38,687,490 (295)

Estimation of pupil size using a digital camera

Philippine Journal of Ophthalmology, 2005
Purpose: To compare pupil-size determination using a digital camera with the Rosenbaum-pupil-comparison and the millimeter-ruler methods. Methods: The pupil size of 30 eyes of 15 medical students with a mean age of 27 years was measured by two ...
Avelino L. Zapanta Jr., MD, Jerome S. Sarmiento, MD, Carlos Alberto, MD, Monserat A. Zapanta, MD   +3 more
doaj  

Biodegradable 3D‐Printable and Coatable Antifouling Composites for Marine Applications

Advanced Functional Materials, EarlyView.
Marine biofouling damages submerged surfaces and raises greenhouse gas emissions. Biodegradable antifouling biocomposites were developed by hot‐mixing beeswax, Tween 80, and calcium stearate or stearic acid. Adjusting the component ratio enables processing via hot‐pressing, 3D‐printing, or dip‐coating.
Gabriele Corigliano, Lorenzo Ravelli, Martina Nardi, Ruowen Tu, Elena Bellini, Valerio Isa, Carlo Filippeschi, Roberta Finazzi, Luca Ceseracciu, Niloofar Paknezhad, Vincenzo Scribano, Paolo Galli, Silvia Lavorano, Simone Montano, Barbara Mazzolai, Marco Contardi, Pietro Cataldi, Athanassia Athanassiou   +17 more
wiley   +1 more source

More Accurate Pinhole Camera Calibration with Imperfect Planar Target [PDF]

, 2011
This paper presents a novel approach to camera calibration that improves final accuracy with respect to standard methods using precision planar targets, even if now inaccurate, unmeasured, roughly planar targets can be used.
Hirzinger, Gerd, Klaus H. Strobl, Gerd Hirzinger, Strobl, Klaus H.   +3 more
core   +1 more source

Morphological characteristics of the genus Ptilodon (Lepidoptera, Notodontidae) larvae with keys to the species

Zoodiversity
The morphological characters of each larval instar of three Palaearctic notodontid moth species belonging to the genus Ptilodon Hübner, 1822, were examined using a scanning electron microscope and digital microphotography.
I. V. Dolinskaya
doaj   +1 more source

Full‐Field Damage Monitoring in Architected Lattices Using In situ Electrical Impedance Tomography

Advanced Functional Materials, EarlyView.
In situ electrical impedance tomography (EIT) turns 3D‐printed, CNT‐infused architected lattices into full‐field damage‐imaging systems. Tunable Voronoi‐based geometries act as active sensing architectures, enabling conductivity maps to detect early‐stage damage and localise sequential ligament fracture before catastrophic failure.
Akash Deep, Andrea Samore, Alistair McEwan, Andrew McBride, Shanmugam Kumar   +4 more
wiley   +1 more source

Traffic flow digital twin generation for highway scenario based on radar-camera paired fusion

, 2023
Autonomous driving is gradually moving from single-vehicle intelligence to internet of vehicles, where traffic participants can share the traffic flow information perceived by each other.
Yanbing Li, Weichuan Zhang, Zhang, Weichuan, Li, Yanbing   +3 more
core   +1 more source

Segmentation and Fractional Coverage Estimation of Soil, Illuminated Vegetation, and Shaded Vegetation in Corn Canopy Images Using CCSNet and UAV Remote Sensing

Agriculture
The accurate estimation of corn canopy structure and light conditions is essential for effective crop management and informed variety selection. This study introduces CCSNet, a deep learning-based semantic segmentation model specifically developed to ...
Shanxin Zhang, Jibo Yue, Xiaoyan Wang, Haikuan Feng, Yang Liu, Meiyan Shu   +5 more
doaj   +1 more source

Breathing Chest Wall Kinematics Assessment through a Single Digital Camera: A Feasibility Study. [PDF]

Sensors (Basel), 2023
Molinaro N, Schena E, Silvestri S, Massaroni C.   +3 more
europepmc   +1 more source

Colorimetric Calibration of a Digital Camera

CoRR, 2017
In this paper, we introduce a novel - physico-chemical - approach for calibration of a digital camera chip. This approach utilizes results of measurement of incident light spectra of calibration films of different levels of gray for construction of calibration curve (number of incident photons vs. image pixel intensity) for each camera pixel.
Renata Rychtáriková, Pavel Soucek, Dalibor Stys   +2 more
openaire   +2 more sources

Grayscale Photomasks Enable Noncontact Optical Patterning of Hydroxypropyl Cellulose Gels for Dynamic Art

Advanced Functional Materials, EarlyView.
Mask‐encoded UV exposure translates digital color information into pixel‐resolved structural‐color patterns in hydroxypropyl cellulose gels. Gaussian‐process‐guided calibration links UV processing conditions, wavelength, and mask opacity, enabling parallel fabrication of multicolor images in a single 10 s exposure.
Mengting Ye, Yunyi Zhu, Sai Sabareesh KS, Md Ashiqur Rahman Alif, Yichen Wan, Ruobing Bai, Narges Pourjafarian, Stefanie Mueller, Hongli Zhu   +8 more
wiley   +1 more source