Results 61 to 70 of about 3,371 (176)

The GIMP Retinex Filter Applied to the Fabric Fault Detection [PDF]

, 2017
In this paper we are proposing the use of a Retinex filter, the GIMP Retinex, for improving the methods for fabric fault detection based on image processing.
Sparavigna, Amelia Carolina, Marazzato, Roberto, Amelia Carolina Sparavigna, Roberto Marazzato   +3 more
core   +1 more source

Properly Speaking, Sir Isaac Newton Was the First Perceptual Psychologist and, Therefore, the First Psychologist

Color Research &Application, Volume 51, Issue 1, January/February 2026.
Newton’s insight that “the rays are not colored” anticipated a constructivist view of perception in which physical stimuli provide input but perceptual qualities arise from neural processing. Framed by Newton’s view, early sensory psychology and modern neuroscience converged on the conclusion that color is an internally generated percept, shaped by ...
Billy R. Wooten, Billy R. Hammond
wiley   +1 more source

A Variational Model for Sea Image Enhancement

Remote Sensing, 2018
The purpose of sea image enhancement is to enhance the information of the waves, whose contrast is generally weak. Enhancement effect is often affected by impulse-type noise and non-uniform illumination.
Mingzhu Song, Hongsong Qu, Guixiang Zhang, Shuping Tao, Guang Jin   +4 more
doaj   +1 more source

Research on Tunnel Pedestrian Detection Algorithm Based on Image Enhancement and Threshold Segmentation

IET Image Processing, Volume 20, Issue 1, January/December 2026.
This paper proposes a low‐light image enhancement and denoising algorithm tailored for tunnel scenes based on computer vision and deep learning technologies. On this basis, a tunnel pedestrian detection method based on connected domain dynamic threshold segmentation is designed, which can reduce the computational resources for identifying pedestrian ...
Yudan Tian, Tong Zhou, Dongchun Li, YuZhao Huang, Hua Huang   +4 more
wiley   +1 more source

Research on image restoration algorithm of uneven illumination in coal mine based on HSV space

Meitan kexue jishu
To accommodate the needs of intelligent construction in coal mines, a large number of digital image acquisition devices have gradually been deployed underground, playing an important role in the safe and efficient production of coal mine.
Sheng LEI, Jinhu ZHANG, Yanpeng LI, Peiyuan LIU   +3 more
doaj   +1 more source

Analysis of retinal and cortical components of Retinex algorithms

, 2017
Following Land and McCann’s first proposal of the Retinex theory, numerous Retinex algorithms that differ considerably both algorithmically and functionally have been developed.
Jihyun Yeonan-Kim, Yeonan-Kim, Jihyun, Bertalmío, Marcelo, Marcelo Bertalmío   +3 more
core   +1 more source

Wavelet Quadtree Contrast Limited Adaptive Histogram Equalisation Tablet Enhancement Method for Defect Detection in Low‐Contrast Tablets

IET Image Processing, Volume 20, Issue 1, January/December 2026.
This paper proposes a novel image enhancement method, WCTE, which integrates Haar wavelet transform and adaptive CLAHE to improve the visibility of low‐contrast tablet images. Combined with the YOLOv11 model, this approach significantly boosts defect detection accuracy, especially for half‐grain and paste tabtal.
Zimei Tu, Qinna Wang, Zhicheng Jiang, Jinhua Jiang   +3 more
wiley   +1 more source

Termite retinex: A new implementation based on a colony of intelligent agents [PDF]

, 2014
The original presentation of Retinex, a spatial color correction and image enhancement algorithm modeling the human vision system, as proposed by Land and McCann in 1964, uses paths to explore the image in search of a local reference white point.
Farup, Ivar, Audino, Giuseppe, Simone, Gabriele, Rizzi, Alessandro, Albregtsen, Fritz, G. Audino, I. Farup, F. Albregtsen, A. Rizzi, G. Simone   +9 more
core   +2 more sources

A Proposed Algorithm for Retinex Computation in Image Enhancement Applications

Journal of Engineering and Sustainable Development, 2007
The Retinex is an image enhancement algorithm that improves the brightness, contrast and sharpness of an image. The core of Retinex computation is clearly specified in recent Matlab implementations.
Saad Mohammed Saleh, Malik Jasim Farhan, Musa Hadi Wali   +2 more
doaj  

Optimisation of Convolution-Based Image Lightness Processing

Journal of Imaging
In the convolutional retinex approach to image lightness processing, an image is filtered by a centre/surround operator that is designed to mitigate the effects of shading (illumination gradients), which in turn compresses the dynamic range.
D. Andrew Rowlands, Graham D. Finlayson
doaj   +1 more source