Journal ArticleDOI
Salt-and-pepper noise removal by median-type noise detectors and detail-preserving regularization
TLDR
This scheme can remove salt-and-pepper-noise with a noise level as high as 90% and show a significant improvement compared to those restored by using just nonlinear filters or regularization methods only.Abstract:
This paper proposes a two-phase scheme for removing salt-and-pepper impulse noise. In the first phase, an adaptive median filter is used to identify pixels which are likely to be contaminated by noise (noise candidates). In the second phase, the image is restored using a specialized regularization method that applies only to those selected noise candidates. In terms of edge preservation and noise suppression, our restored images show a significant improvement compared to those restored by using just nonlinear filters or regularization methods only. Our scheme can remove salt-and-pepper-noise with a noise level as high as 90%.read more
Citations
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Journal ArticleDOI
LLNet: A deep autoencoder approach to natural low-light image enhancement
TL;DR: In this paper, a deep autoencoder-based approach is proposed to identify signal features from low-light images and adaptively brighten images without over-amplifying/saturating the lighter parts in images with high dynamic range.
Journal ArticleDOI
A New Fast and Efficient Decision-Based Algorithm for Removal of High-Density Impulse Noises
K.S. Srinivasan,D. Ebenezer +1 more
TL;DR: A new decision-based algorithm is proposed for restoration of images that are highly corrupted by impulse noise that removes the noise effectively even at noise level as high as 90% and preserves the edges without any loss up to 80% of noise level.
Posted Content
LLNet: A Deep Autoencoder Approach to Natural Low-light Image Enhancement
TL;DR: It is shown that a variant of the stacked-sparse denoising autoencoder can learn from synthetically darkened and noise-added training examples to adaptively enhance images taken from natural low-light environment and/or are hardware-degraded.
Journal ArticleDOI
A New Directional Weighted Median Filter for Removal of Random-Valued Impulse Noise
Yiqiu Dong,Shufang Xu +1 more
TL;DR: Extensive simulations show that the proposed filter not only can provide better performance of suppressing impulse with high noise level but can preserve more detail features, even thin lines.
Journal ArticleDOI
Analysis of new top-hat transformation and the application for infrared dim small target detection
Xiangzhi Bai,Fugen Zhou +1 more
TL;DR: Good performance of the application for infrared dim small target detection is obtained, which could be ascribed to the proper selection of structuring elements based on the properties and three types of multi-scale operations are discussed in detail.
References
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Journal ArticleDOI
Book Review: Digital image processing (second edition). By R. C. Gonzalez and P. Wintz, Addison-Wesley, 1987. 503 pp. Price: £29.95. (ISBN 0-201-11026-1)
Book
Handbook of Image and Video Processing
TL;DR: The Handbook of Image and Video Processing contains a comprehensive and highly accessible presentation of all essential mathematics, techniques, and algorithms for every type of image and video processing used by scientists and engineers.
Proceedings ArticleDOI
Random projection in dimensionality reduction: applications to image and text data
Ella Bingham,Heikki Mannila +1 more
TL;DR: It is shown that projecting the data onto a random lower-dimensional subspace yields results comparable to conventional dimensionality reduction methods such as principal component analysis: the similarity of data vectors is preserved well under random projection.
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