Results 61 to 70 of about 1,342,457 (294)

Apple Surface Defect Detection Based on Gray Level Co-Occurrence Matrix and Retinex Image Enhancement

Applied Sciences, 2023
Aiming at the problems of uneven light reflectivity on the spherical surface and high similarity between the stems/calyxes and scars that exist in the detection of surface defects in apples, this paper proposed a defect detection method based on image ...
Lei Yang, Dexu Mu, Zhen Xu, Kaiyu Huang
doaj   +1 more source

Limitations of visual gamma corrections in LCD displays

Displays, 2014
A method for estimating the non-linear gamma transfer function of liquid-crystal displays (LCDs) without the need of a photometric measurement device was described by Xiao et al. (2011) [1]. It relies on observer's judgments of visual luminance by presenting eight half-tone patterns with luminances from 1/9 to 8/9 of the maximum value of each colour ...
C. Alejandro Párraga, Jordi Roca-Vila, Dimosthenis Karatzas, Sophie M. Wuerger   +3 more
openaire   +4 more sources

Using cell‐free RNA to identify B‐ and T‐cell clonality for diagnosis and monitoring of B‐ and T‐cell neoplasms

FEBS Open Bio, EarlyView.
Using peripheral blood for determining B‐cell or T‐cell clonality is more reliable when we use cell‐free RNA (cfRNA) because cells release blood significantly more RNA than DNA. Next‐generation sequencing (NGS) of cfRNA allows us to evaluate fragment cfRNA and evaluate clonality reliably without the need for prior determination of the specific dominant
Adam Albitar, Sally Agersborg, Ahmed Charifa, Pooja Phull, Noa Biran, David Vesole, Harsh Parmar, Andrew Pecora, Andrew Ip, Andre Goy, David Siegel, Maher Albitar   +11 more
wiley   +1 more source

The Effect of Gamma Correction on the Accuracy of Vehicle Detection Using the YOLOv8 Algorithm

Jurnal RESTI (Rekayasa Sistem dan Teknologi Informasi)
Accurate vehicle detection under low-light conditions is a significant challenge in traffic surveillance systems and computer vision applications. Although YOLOv8 performs well under normal illumination, its accuracy decreases when processing low-light ...
Fathree Halawa, Elviawaty Muisa Zamzami, Jos Timanta Tarigan   +2 more
doaj   +1 more source

Structural and biochemical insights into the thermostable esterase Ta0887 from Thermoplasma acidophilum

FEBS Open Bio, EarlyView.
In this study, a novel esterase from the thermoacidophilic archaeon Thermoplasma acidophilum was biochemically and structurally characterized. Our results demonstrate that Ta0887 is a highly thermostable esterase that preferentially hydrolyzes p‐nitrophenyl hexanoate and possesses an α‐helical cap domain that likely contributes to its substrate ...
Alejandro Delgado‐Rey, Miriam Livier Llamas‐García, Gabriela M. Montero‐Morán, Leticia Santos, Samuel Lara‐González   +4 more
wiley   +1 more source

Image preprocessing method for underground variable lighting conditions

Gong-kuang zidonghua, 2014
The paper introduced two histogram-based preprocessing algorithms and Gamma correction algorithm, proved that overall effect of histogram specification was better than histogram equalization by example comparing.
SHANG Changchun, MA Hongwei, CHEN Yanbing   +2 more
doaj   +1 more source

Cell surface CD11c as a neutrophil aging marker molecule

FEBS Open Bio, EarlyView.
Cell surface CD11chi neutrophils were more aged and had better phagocytic function than CD11c−/lo neutrophils. Transcriptomic analysis of CD11chi neutrophils and CD11c−/lo neutrophils in pediatric population showed that the most difference was seen in infants.
Sophia Koutsogiannaki, Fahd Alhamdan, Erik Malm, Marie Bermudez, Samuel Y. Kim, Koichi Yuki   +5 more
wiley   +1 more source

Reducing Noise and Improving Image Contrast with a Hybrid Approach to Enhance the Quality of Medical Imaging

Journal of Medical Physics
Propose: Medical image enhancement is one of the most critical areas in modern medicine, as it helps in disease diagnosis and medical action on the basis of diagnostic accuracy.
Mohammed A. Ismael, Mohammed J. Alwazzan, Ruaa A. Mohammed   +2 more
doaj   +1 more source

IGF2 knockout reduces but does not abolish osteosarcoma growth in vitro and in vivo

FEBS Open Bio, EarlyView.
To test whether endogenous IGF2 promotes osteosarcoma growth, IGF2 was knocked out in Saos2 cells via CRISPR‐Cas9. KO cells showed reduced proliferation in vitro, and knockout xenografts in mice reached only ~25% of wild‐type tumor volume. Insulin‐like growth factor 2 (IGF2) is implicated in osteosarcoma, but direct functional evidence of its role is ...
Shun Yao, Marco Archetti
wiley   +1 more source

Parametric methods for gamma and inverse gamma correction, with extensions to halftoning [PDF]

Behavior Research Methods, Instruments, & Computers, 1990
Users of computer-controlled color video systems rely on procedures called gamma and inverse gamma correction to translate between system-specific descriptions of their stimuli and perceptually meaningful measures that are independent of the video system. These corrections are usually performed using a tabular approach.
Harold Stanislaw, Lynn A. Olzak
openaire   +1 more source