Results 21 to 30 of about 112,016 (186)

Exposure Based Multi-Histogram Equalization Contrast Enhancement for Non-Uniform Illumination Images

open access: yesIEEE Access, 2019
Non-uniform illuminated images pose challenges in contrast enhancement due to the existence of different exposure region caused by uneven illumination.
Siu Fong Tan, Nor Ashidi Mat Isa
doaj   +1 more source

Contrast Enhancement Algorithm of Remote Sensing Image Based on Histogram Optimization [PDF]

open access: yesJisuanji gongcheng, 2016
Remote sensing images usually have low contrast.In order to deal with this problem,a remote sensing image contrast enhancement algorithm based on optimizing histogram is proposed.The Histogram Equalization(HE) and Contrast Limited Adaptive Histogram ...
ZHUANG Yulin
doaj   +1 more source

Mine image enhancement method based on multi-scale local histogram equalization

open access: yesGong-kuang zidonghua, 2023
There are problems of under-enhancement and over-enhancement in commonly mine image enhancement methods such as histogram equalization, Retinex theory, homomorphic filtering, wavelet analysis, etc.
TU Yihan, WANG Puqing
doaj   +1 more source

Histogram equalization techniques for enhancement of low radiance retinal images for early detection of diabetic retinopathy

open access: yesEngineering Science and Technology, an International Journal, 2019
Images are sometimes affected by improper illumination and are dark. This happens usually in medical images or the images acquired in low light conditions.
Navdeep Singh   +2 more
doaj   +1 more source

Density-Based Histogram Partitioning and Local Equalization for Contrast Enhancement of Images [PDF]

open access: yesJournal of Artificial Intelligence and Data Mining, 2018
Histogram Equalization technique is one of the basic methods in image contrast enhancement. Using this method, in the case of images with uniform gray levels (with narrow histogram), causes loss of image detail and the natural look of the image.
M. Shakeri   +2 more
doaj   +1 more source

Histogram Equalization Of The Image

open access: yes, 2021
6 ...
Doken, Irem   +3 more
openaire   +2 more sources

HEBS: Histogram Equalization for Backlight Scaling [PDF]

open access: yesDesign, Automation and Test in Europe, 2005
In this paper, a method is proposed for finding a pixel transformation function that maximizes backlight dimming while maintaining a pre-specified image distortion level for a liquid crystal display. This is achieved by finding a pixel transformation function, which maps the original image histogram to a new histogram with lower dynamic range. Next the
Ali Iranli, Hanif Fatemi, Massoud Pedram
openaire   +4 more sources

Equal-bin-width histogram versus equal-bin-count histogram

open access: yesJournal of Applied Statistics, 2020
The histogram has all its bin widths equal to some non-random number arbitrary set by an analyst (EBWH). In the result, particular bin counts are random variables. This paper presents also a histogram that is constructed in a converse manner. Bin counts are all equal to some non-random number arbitrary set by an analyst (EBCH).
openaire   +2 more sources

SLAAHE: Selective Apex Adaptive Histogram Equalization

open access: yesFranklin Open, 2023
Medical imaging enables specialists to make diagnoses our internal body organs for detecting anomalies without being intrusive. Unfortunately, the images produced by various modalities are not only plagued by noises, but the images contrasts are also ...
Manas Sarkar, Ardhendu Mandal
doaj   +1 more source

Histogram Equalization-Based Thresholding

open access: yesIEICE Transactions on Information and Systems, 2008
The thresholding results for gray level images depend greatly on the thresholding method applied. However, this letter proposes a histogram equalization-based thresholding algorithm that makes the thresholding results insensitive to the thresholding method applied.
Soon Hak Kwon   +4 more
openaire   +2 more sources

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