Results 51 to 60 of about 681,778 (171)

A deep learning approach for virtual contrast enhancement in Contrast Enhanced Spectral Mammography

open access: yesComputerized Medical Imaging and Graphics
Contrast Enhanced Spectral Mammography (CESM) is a dual-energy mammographic imaging technique that first needs intravenously administration of an iodinated contrast medium; then, it collects both a low-energy image, comparable to standard mammography, and a high-energy image.
Aurora Rofena   +6 more
openaire   +4 more sources

Fast contrast enhancement by adaptive pixel value stretching

open access: yesInternational Journal of Distributed Sensor Networks, 2018
In this article, we propose a fast and effective method for digital image contrast enhancement. The gray-level dynamic range of contrast-distorted images is extended maximally via adaptive pixel value stretching.
Gang Cao   +3 more
doaj   +1 more source

FUZZY BASED CONTRAST STRETCHING FOR MEDICAL IMAGE ENHANCEMENT [PDF]

open access: yesICTACT Journal on Soft Computing, 2011
Contrast Stretching is an important part in medical image processing applications. Contrast is the difference between two adjacent pixels. Fuzzy statistical values are analyzed and better results are produced in the spatial domain of the input image. The
T.C. Raja Kumar   +2 more
doaj  

Diffeomorphic Registration of Images with Variable Contrast Enhancement

open access: yesInternational Journal of Biomedical Imaging, 2011
Nonrigid image registration is widely used to estimate tissue deformations in highly deformable anatomies. Among the existing methods, nonparametric registration algorithms such as optical flow, or Demons, usually have the advantage of being fast and ...
Guillaume Janssens   +4 more
doaj   +1 more source

Underwater Image Enhancement via RGB Color-Cast Correction and Lab Space Luminance-Chrominance Enhancement

open access: yesJournal of Marine Science and Engineering
Underwater images often suffer from color casts, insufficient contrast, and blurred details due to wavelength-dependent absorption and scattering, which limits their use in marine observation and underwater target recognition.
Fengxu Guan   +3 more
doaj   +1 more source

DCT Underwater Image Enhancement Based on Attenuation Analysis

open access: yesSensors
Underwater images often suffer from color distortion, reduced contrast, and blurred details due to the selective absorption and scattering of light by water, which limits the performance of underwater visual tasks.
Leyuan Wang   +3 more
doaj   +1 more source

A NON-LINEAR TECHNIQUE FOR THE ENHANCEMENT OF EXTREMELY NON-UNIFORM LIGHTING IMAGES

open access: yesHavacılık ve Uzay Teknolojileri Dergisi, 2007
At night scenes and under nonuniform lighting conditions, either the low intensity areas or the high intensity areas cannot be clearly seen. Various image processing techniques have been developed to recover the meaningful
Osman Nuri Uçan , Ender Öğüşlü
doaj  

MR Image Contrast Enhancement by Wavelet-based Contourlet Transform [PDF]

open access: yesInternational Journal Bioautomation, 2016
The contrast of magnetic resonance (MR) image local regions is low, edges blurred and image contains noise. To improve image contrast of local regions and solve the problem of noise enlarging, an MR image contrast enhancement algorithm by wavelet-based ...
Zhongliang Luo, Yingbiao Jia
doaj  

Nitrous oxide myelopathy: A pernicious contrast enhancement

open access: yeseNeurologicalSci, 2023
Yachar Dawudi   +4 more
doaj   +1 more source

تطویر طریقة تقلیدیة مستخدمة فی رفع الضوضاء لتحسین تباین الصور الملونة

open access: yesAl-Rafidain Journal of Computer Sciences and Mathematics, 2013
Hanan Ali   +3 more
doaj   +1 more source

Home - About - Disclaimer - Privacy