Results 91 to 100 of about 2,730 (217)

Low-Light Mine Image Enhancement Algorithm Based on Improved Retinex

open access: yesApplied Sciences
Aiming at solving the problems of local halo blurring, insufficient edge detail preservation, and serious noise in traditional image enhancement algorithms, an improved Retinex algorithm for low-light mine image enhancement is proposed.
Feng Tian, Mengjiao Wang, Xiaopei Liu
doaj   +1 more source

Retinex Jointed Multiscale CLAHE Model for HDR Image Tone Compression

open access: yesMathematics
Tone-mapping algorithms aim to compress a wide dynamic range image into a narrower dynamic range image suitable for display on imaging devices. A representative tone-mapping algorithm, Retinex theory, reflects color constancy based on the human visual ...
Yu-Joong Kim, Dong-Min Son, Sung-Hak Lee
doaj   +1 more source

Submicron structure random field on granular soil material with retinex algorithm optimization

open access: yesEPJ Web of Conferences, 2017
In this paper, a Retinex scale optimized image enhancement algorithm is proposed, which can enhance the micro vision image and eliminate the influence of the uneven illumination.
Liang Yu   +4 more
doaj   +1 more source

Control parameters for Retinex

open access: yes, 2001
The recently published Matlab implementation of the retinex algorithm 2 has free parameters for the user to specify. The parameters include the number of iterations to perform at each spatial scale, the viewing angle, image resolution, and the lookup ...
Florian Ciurea, Brian Funt
core  

Spatial color algorithms: Milano retinex and NASA retinex

open access: yes, 2014
The Retinex theory of Edwin Land proposed a model of human color vision based on color perception experiments. The original Retinex algorithm, by Land and McCann, is capable of performing color correction and contrast enhancement of images, with some ...
A. Rizzi
core  

DI-Retinex: Digital-Imaging Retinex Theory for Low-Light Image Enhancement

open access: yesCoRR
Many existing methods for low-light image enhancement (LLIE) based on Retinex theory ignore important factors that affect the validity of this theory in digital imaging, such as noise, quantization error, non-linearity, and dynamic range overflow. In this paper, we propose a new expression called Digital-Imaging Retinex theory (DI-Retinex) through ...
Shangquan Sun   +4 more
openaire   +2 more sources

Retinex-Diffusion: On Controlling Illumination Conditions in Diffusion Models via Retinex Theory

open access: yesCoRR
This paper introduces a novel approach to illumination manipulation in diffusion models, addressing the gap in conditional image generation with a focus on lighting conditions. We conceptualize the diffusion model as a black-box image render and strategically decompose its energy function in alignment with the image formation model.
Xiaoyan Xing   +5 more
openaire   +2 more sources

Relative importance of Retinex-based inhomogeneities correction.

open access: yes, 2015
(A) A randomly chosen image from the DRIVE dataset and expert’s annotation. (B) Vesselness map using local phase filter (top), and the segmentation result (bottom) when the Retinex is applied.
Yonghuai Liu (715701)   +4 more
core   +1 more source

Multi-Scale Retinex For Color Image Enhancement

open access: yes, 1996
The retinex is a human perception-based image processing algorithm which provides color constancy and dynamic range compression. We have previously reported on a singlescale retinex (SSR) and shown that it can either achieve color/lightness rendition or ...
Zia-Ur Rahman, Glenn A. Woodell
core  

LOW-COST NIGHT VISION CAMERA BASED ON A MODIFIED CONSUMER WEBCAM AND LIGHTWEIGHT REAL-TIME ENHANCEMENT

open access: yesJournal of Problems in Computer Science and Information Technologies
Low-light perception is a core requirement for robotics, inspection, and wearable situational awareness, yet reliable night- vision solutions often require expensive sensors or computation- ally heavy processing.
Zaki Al-Farabi   +6 more
doaj   +1 more source

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