Results 21 to 30 of about 615,528 (247)

Synthesis of the rotational blur kernel in a digital image using measurements of a triaxial gyroscope

open access: yesКомпьютерная оптика, 2022
A method for calculating of a blur kernel arising from the rotation of a digital camera is proposed. The rotation is measured with a three-axis gyroscope attached to the camera.
N.N. Vasilyuk
doaj   +1 more source

Research on Blind Super-Resolution Technology for Infrared Images of Power Equipment Based on Compressed Sensing Theory

open access: yesSensors, 2021
Infrared images of power equipment play an important role in power equipment status monitoring and fault identification. Aiming to resolve the problems of low resolution and insufficient clarity in the application of infrared images, we propose a blind ...
Yan Wang   +3 more
doaj   +1 more source

Pixel-Level Kernel Estimation for Blind Super-Resolution

open access: yesIEEE Access, 2021
Throughout the past several years, deep learning-based models have achieved success in super-resolution (SR). The majority of these works assume that low-resolution (LR) images are ‘uniformly’ degraded from their corresponding high ...
Jaihyun Lew, Euiyeon Kim, Jae-Pil Heo
doaj   +1 more source

Effective Alternating Direction Optimization Methods for Sparsity-Constrained Blind Image Deblurring

open access: yesSensors, 2017
Single-image blind deblurring for imaging sensors in the Internet of Things (IoT) is a challenging ill-conditioned inverse problem, which requires regularization techniques to stabilize the image restoration process.
Naixue Xiong   +5 more
doaj   +1 more source

Robust Motion Blur Kernel Estimation by Kernel Continuity Prior

open access: yesIEEE Access, 2020
The accurate kernel estimation is key to the blind motion deblurring. Many previous methods depend on the image regularization to recover strong edges in the observed image for kernel estimation.
Xueling Chen   +3 more
doaj   +1 more source

Cascaded Degradation-Aware Blind Super-Resolution

open access: yesSensors, 2023
Image super-resolution (SR) usually synthesizes degraded low-resolution images with a predefined degradation model for training. Existing SR methods inevitably perform poorly when the true degradation does not follow the predefined degradation ...
Ding Zhang   +3 more
doaj   +1 more source

Natural Image Deblurring Based on Ringing Artifacts Removal via Knowledge-Driven Gradient Distribution Priors

open access: yesIEEE Access, 2020
Blind image deblurring, composed of estimating blur kernel and non-blind deconvolution, is an extremely ill-posed problem. However, previous deblurring methods still cannot solve delta kernel or noise problem well and avoid ringing artifacts in restored ...
Hongtian Zhao   +3 more
doaj   +1 more source

An Improved Feedback Network Superresolution on Camera Lens Images for Blind Superresolution

open access: yesJournal of Electrical and Computer Engineering, 2021
Most of the recent advances in image superresolution (SR) assume that the blur kernel during downsampling is predefined (e.g., Bicubic or Gaussian kernel), but it is a difficult task to make it suitable for all the realistic images.
Yuhao Liu
doaj   +1 more source

A New Full-Reference Image Quality Metric for Motion Blur Profile Characterization

open access: yesIEEE Access, 2021
Motion blur is common in images captured by handheld devices, arising from hand, device and/or object motion. To restore sharp images from the images degraded by the motion, it is extremely important to assess the quality of the captured image and its ...
Mohammad Abdullah-Al-Mamun   +2 more
doaj   +1 more source

Blind image deblurring method based on l1/l2-norm regularization

open access: yesJournal of Measurement Science and Instrumentation, 2023
Aiming at the problem of ringing artifacts existing in the edge of image in traditional blind image deblurring methods, l1/l2 regularization-based blind image deblurring method is proposed. The latent image is constrained by l1/l2 regularization, and the
CAO Shengfang, HU Hongping, WANG Wenke
doaj  

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