Proceedings ArticleDOI
Internal noise-induced contrast enhancement of dark images
Rajib Kumar Jha,Rajlaxmi Chouhan,Prabir Kumar Biswas,Kiyoharu Aizawa +3 more
- pp 973-976
TLDR
The proposed contrast enhancement technique using scaling of internal noise of a dark image in discrete cosine transform (DCT) domain adopts a local adaptive processing and significantly enhances the image contrast and color information while ascertaining good perceptual quality.Abstract:
A contrast enhancement technique using scaling of internal noise of a dark image in discrete cosine transform (DCT) domain has been proposed in this paper. The mechanism of enhancement is attributed to noise-induced transition of DCT coefficients from a poor state to an enhanced state. This transition is effected by the internal noise present due to lack of sufficient illumination and can be modeled by a general bistable system exhibiting dynamic stochastic resonance. The proposed technique adopts a local adaptive processing and significantly enhances the image contrast and color information while ascertaining good perceptual quality. When compared with the existing enhancement techniques such as adaptive histogram equalization, gamma correction, single-scale retinex, multi-scale retinex, modified high-pass filtering, multi-contrast enhancement, multi-contrast enhancement with dynamic range compression, color enhancement by scaling, edge-preserving multi-scale decomposition and automatic controls of popular imaging tool, the proposed technique gives remarkable performance in terms of relative contrast enhancement, colorfulness and visual quality of enhanced image.read more
Citations
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Journal ArticleDOI
Performance Evaluation of HE, AHE and Fuzzy Image Enhancement
Sargun,Shashi B. Rana +1 more
TL;DR: From the comparison, it has been proved that the fuzzy enhancement performs much better as compared to histogram and adaptive histogram equalization.
Journal ArticleDOI
A Comparative Analysis on Histogram Equalization Techniques for Medical Image Enhancement
Himanshu Singh,Vivek Singh +1 more
TL;DR: In this paper review, the enhancement of medical images using efficient algorithms based on HE techniques are reviewed to compare the pre-processing of medical image on technique to histogram equalization (HE), adaptive histogramequalization (AHE), (BBHE) and contrast limited adaptive histograms equalization
Journal ArticleDOI
99m-Tc MDP Bone Scan Image Enhancement using Pipeline Application of Dynamic Stochastic Resonance Algorithm and Block-Matching 3D Filter
Anil Kumar Pandey,Gagandeep Kaur,Jagrati Chaudhary,Angel Hemrom,Jasim Jaleel,Param Dev Sharma,Chetan K. Patel,Rajesh Kumar +7 more
TL;DR: In this article , a pipelined application of the dynamic stochastic resonance (DSR) algorithm and block-matching 3D (BM3D) filter for the enhancement of nuclear medicine images was proposed and evaluated.
Proceedings ArticleDOI
Noise-enhanced contrast stretching of dark images in SVD-DWT domain
TL;DR: A noise-enhanced contrast stretching algorithm for enhancement of dark images in SVD-DWT domain has been presented and comparison with other SR-based and non-SR based algorithms shows noteworthy performance of the algorithm.
Proceedings ArticleDOI
An approach based on parametric sigmoid function for contrast enhancement with mean brightness preservation
TL;DR: A parametric sigmoid formula is proposed in which contrast and the position of steepest point of the curve of the function is adjusted by the parameters of sigmoids function to enhance the contrast of the input image.
References
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Journal ArticleDOI
A multiscale retinex for bridging the gap between color images and the human observation of scenes
TL;DR: This paper extends a previously designed single-scale center/surround retinex to a multiscale version that achieves simultaneous dynamic range compression/color consistency/lightness rendition and defines a method of color restoration that corrects for this deficiency at the cost of a modest dilution in color consistency.
Journal ArticleDOI
Properties and performance of a center/surround retinex
TL;DR: A practical implementation of the retinex is defined without particular concern for its validity as a model for human lightness and color perception, and the trade-off between rendition and dynamic range compression that is governed by the surround space constant is described.
Journal ArticleDOI
Online palmprint identification
TL;DR: The system consists of a novel device for online palmprint image acquisition and an efficient algorithm for fast palmprint recognition, and a robust image coordinate system is defined to facilitate image alignment for feature extraction.
Journal ArticleDOI
Edge-preserving decompositions for multi-scale tone and detail manipulation
TL;DR: This paper advocates the use of an alternative edge-preserving smoothing operator, based on the weighted least squares optimization framework, which is particularly well suited for progressive coarsening of images and for multi-scale detail extraction.
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