Results 31 to 40 of about 681,778 (171)

Gray-Scale Image Brightness/Contrast Enhancement with Multi-Model Histogram linear Contrast Stretching (MMHLCS) method

open access: yesIraqi Journal of Physics, 2009
Gray-Scale Image Brightness/Contrast Enhancement with Multi-Model Histogram linear Contrast Stretching (MMHLCS ...
Faisel G.M. Al-Hamadi
doaj  

Contrast-Enhancing Spatial–Frequency Deconvolution-Aided Interferometric Scattering Microscopy (iSCAT)

open access: yesPhotonics
Interferometric scattering microscopy (iSCAT) is widely used for label-free tracking of nanoparticles and single molecules. However, its ability to identify small molecules is limited by low imaging contrast blurred with noise.
Xiang Zhang, Hao He
doaj   +1 more source

Non-topographical contrast enhancement in the olfactory bulb

open access: yesBMC Neuroscience, 2006
Background Contrast enhancement within primary stimulus representations is a common feature of sensory systems that regulates the discrimination of similar stimuli.
Sethupathy Praveen, Cleland Thomas A
doaj   +1 more source

Gradient-guided color image contrast and saturation enhancement

open access: yesInternational Journal of Advanced Robotic Systems, 2017
Digital color images are capable of presenting hue, saturation, and brightness perceptions. Therefore, quality improvement of color images should be taken into account to enhance all three stimuli.
Haiyan Shi   +6 more
doaj   +1 more source

Assessing Changes in Dielectric Properties Due to Nanomaterials Using a Two-Port Microwave System

open access: yesSensors, 2020
Detecting changes in the dielectric properties of tissues at microwave frequencies can offer simple and cost effective tools for cancer detection. These changes can be enhanced by the use of nanoparticles (NPs) that are characterised by both increased ...
Mohammed Rahman   +4 more
doaj   +1 more source

Screened Poisson Equation for Image Contrast Enhancement

open access: yesImage Processing On Line, 2014
In this work we propose a discussion and detailed implementation of a very simple gradient domain method that tries to eliminate the effect of nonuniform illumination and at the same time preserves the images details. This model, which to the best of our
Jean-Michel Morel   +2 more
doaj   +1 more source

Contrast-enhanced ultrasound in oncology [PDF]

open access: yesCancer Imaging, 2011
In patients with known malignant disease, 51% of liver lesions less than 1.5 cm turn out to be benign. Whether the probability of malignancy is high or low, further investigations are often necessary to definitely exclude malignancy. Contrast-enhanced ultrasonography has a prominent role in lesion characterization with a diagnostic accuracy comparable ...
Madsen, H.H.T., Rasmussen, F.
openaire   +2 more sources

Adaptive Contrast Enhancement for Infrared Images Based on the Neighborhood Conditional Histogram

open access: yesRemote Sensing, 2019
In this paper, an adaptive contrast enhancement method based on the neighborhood conditional histogram is proposed to improve the visual quality of thermal infrared images.
Chengwei Liu   +5 more
doaj   +1 more source

Dynamic contrast enhancement and flexible odor codes

open access: yesNature Communications, 2018
Sensory stimuli are encountered in multiple ways necessitating a flexible and adaptive neural population code for identification. Here, the authors show that the dynamics of odor coding in the locust antennal lobe varies with stimulus context so as to ...
Srinath Nizampatnam   +3 more
doaj   +1 more source

Contrast Limited Adaptive Local Histogram Equalization Method for Poor Contrast Image Enhancement

open access: yesIEEE Access
Contrast limited adaptive histogram equalization (CLAHE) is a widely utilised method for image enhancement due to its speed and simplicity. However, this method faces two major limitations, namely, the requirement of manual parameter setting (i.e.
Ibrahim Majid Mohammed   +1 more
doaj   +1 more source

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