Results 21 to 30 of about 511,982 (176)

Studies of EGRET sources with a novel image restoration technique [PDF]

open access: yes, 2007
We have developed an image restoration technique based on the Richardson-Lucy algorithm optimized for GLAST-LAT image analysis. Our algorithm is original since it utilizes the PSF (point spread function) that is calculated for each event.
Chiang, James   +4 more
core   +3 more sources

Fast Image Restoration for Spatially Varying Defocus Blur of Imaging Sensor

open access: yesSensors, 2015
This paper presents a fast adaptive image restoration method for removing spatially varying out-of-focus blur of a general imaging sensor. After estimating the parameters of space-variant point-spread-function (PSF) using the derivative in each uniformly
Hejin Cheong   +4 more
doaj   +1 more source

Gray Extreme Weighted Sum Image Ringing Evaluation Algorithm

open access: yesJournal of Harbin University of Science and Technology, 2019
In the process of image blind restoration, the estimation of the fuzzy kernel usually produces errors which lead to image ringing The existing algorithm cannot effectively evaluate the severity of ringing To solve this problem, a method for evaluating ...
KE Ming   +4 more
doaj   +1 more source

Variational Image Segmentation Model Coupled with Image Restoration Achievements [PDF]

open access: yes, 2014
Image segmentation and image restoration are two important topics in image processing with great achievements. In this paper, we propose a new multiphase segmentation model by combining image restoration and image segmentation models.
Cai, Xiaohao
core   +3 more sources

An Objective Evaluation Method for Image Restoration

open access: yesJournal of Electrical and Computer Engineering, 2010
Accurate image restoration is of paramount importance for low-level vision, computer vision, and various other fields. Numerous complex restoration algorithms have been stated in the literature.
A. Lakshmi, Subrata Rakshit
doaj   +1 more source

3D digital technologies applied to the design and printing of auxiliary structures for fragment adhesion strategies on wax artifacts

open access: yesHeritage Science, 2022
Three-dimensional models of anatomy in wax preserved in university museums are rare artifacts of extraordinary technical complexity. In recent years, interest in them has increased among scholars who consider them primary sources of heritage value to ...
Emanuel Sterp Moga   +3 more
doaj   +1 more source

Discriminative Transfer Learning for General Image Restoration

open access: yes, 2017
Recently, several discriminative learning approaches have been proposed for effective image restoration, achieving convincing trade-off between image quality and computational efficiency.
Heide, Felix   +4 more
core   +1 more source

Non-blind Image Restoration Based on Convolutional Neural Network

open access: yes, 2018
Blind image restoration processors based on convolutional neural network (CNN) are intensively researched because of their high performance. However, they are too sensitive to the perturbation of the degradation model.
Okutomi, Masatoshi   +2 more
core   +1 more source

Variational Deep Image Restoration

open access: yesIEEE Transactions on Image Processing, 2022
This paper presents a new variational inference framework for image restoration and a convolutional neural network (CNN) structure that can solve the restoration problems described by the proposed framework. Earlier CNN-based image restoration methods primarily focused on network architecture design or training strategy with non-blind scenarios where ...
Jae Woong Soh, Nam Ik Cho
openaire   +3 more sources

A Novel Nonlinear Second Order Hyperbolic Partial Differential Equation-Based Image Restoration Algorithm With Directional Diffusion

open access: yesIEEE Access, 2020
Recently, variational and partial differential equation (PDE)-based algorithms have become very important for image restoration. In this study, we propose a new second order hyperbolic PDE model based on directional diffusion for image restoration.
Shuaijie Li, Zhanjiang Zhi
doaj   +1 more source

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