Results 31 to 40 of about 673,965 (277)

Voxel-Based Spatial Filtering Method for Canopy Height Retrieval from Airborne Single-Photon Lidar

open access: yesRemote Sensing, 2016
Airborne single-photon lidar (SPL) is a new technology that holds considerable potential for forest structure and carbon monitoring at large spatial scales because it acquires 3D measurements of vegetation faster and more efficiently than conventional ...
Hao Tang   +4 more
doaj   +1 more source

Impulsive noise removal from color images with morphological filtering

open access: yes, 2017
This paper deals with impulse noise removal from color images. The proposed noise removal algorithm employs a novel approach with morphological filtering for color image denoising; that is, detection of corrupted pixels and removal of the detected noise ...
A Jakhar   +12 more
core   +1 more source

Improved detection of small atom numbers through image processing [PDF]

open access: yes, 2010
We demonstrate improved detection of small trapped atomic ensembles through advanced post-processing and optimal analysis of absorption images. A fringe removal algorithm reduces imaging noise to the fundamental photon-shot-noise level and proves ...
A. F. Tauschinsky   +6 more
core   +2 more sources

A nonlinear variational method for signal segmentation and reconstruction using level set algorithm

open access: yes, 2006
A nonlinear functional is considered in this letter for segmentation and noise removal of piecewise continuous signals containing binary information contaminated with Gaussian noise.
Mahmoodi, Sasan, Sharif, Bayan
core   +1 more source

LinkNet-B7: Noise Removal and Lesion Segmentation in Images of Skin Cancer

open access: yesMathematics, 2022
Skin cancer is common nowadays. Early diagnosis of skin cancer is essential to increase patients’ survival rate. In addition to traditional methods, computer-aided diagnosis is used in diagnosis of skin cancer.
Cihan Akyel, Nursal Arıcı
doaj   +1 more source

An Approach to Improve the Quality of Infrared Images of Vein-Patterns

open access: yesSensors, 2011
This study develops an approach to improve the quality of infrared (IR) images of vein-patterns, which usually have noise, low contrast, low brightness and small objects of interest, thus requiring preprocessing to improve their quality.
Chih-Lung Lin
doaj   +1 more source

AWGN Removal Using Modified Steering Kernel and Image Matching

open access: yesApplied Sciences, 2022
Image noise occurs during acquisition and transmission and adversely affects processes, such as image segmentation and object recognition and classification.
Bong-Won Cheon, Nam-Ho Kim
doaj   +1 more source

Speech Enhancement using Kernel and Normalized Kernel Affine Projection Algorithm

open access: yes, 2013
The goal of this paper is to investigate the speech signal enhancement using Kernel Affine Projection Algorithm (KAPA) and Normalized KAPA. The removal of background noise is very important in many applications like speech recognition, telephone ...
Kumar, T. Kishore, Ravi, Bolimera
core   +1 more source

Multi-Class Diagnosis of Neurodegenerative Diseases Using Effective Deep Learning Models With Modified DenseNet-169 and Enhanced DeepLabV 3+

open access: yesIEEE Access
Early detection lowers the death rate and allows for prompt treatment of the exhausted individual with neurodegenerative diseases. Most existing classification studies can either not generate probabilistic predictions or consider uncertainty, or do not ...
Srinivas Katkam   +3 more
doaj   +1 more source

Experimental Demonstration of Time-Delay Interferometry for the Laser Interferometer Space Antenna

open access: yes, 2010
We report on the first demonstration of time-delay interferometry (TDI) for LISA, the Laser Interferometer Space Antenna. TDI was implemented in a laboratory experiment designed to mimic the noise couplings that will occur in LISA.
Brent Ware   +8 more
core   +1 more source

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